Newsletter - Annals of the Brazilian Academy of Sciences

ISSUE 46

AABC - Volume 93.2 2021

I am pleased to present the third issue of the Annals of the Brazilian Academy of Sciences (AABC) published this year. Despite the several challenges imposed by the pandemic, we are working very hard to keep the journal on time. As pointed out several times before, the AABC has adopted the continuous publication system, but still closes issues for both, printed and online versions.

A total of 64 papers can be found in 93.2, involving the following fields: Ecosystems (31), Cellular and Molecular Biology (17), Microbiology (9), Animal Science (4), Mathematical Sciences (1), Engineering Sciences (1), and Social Sciences (1).

Regarding Ecosystems, there is an interesting discussion about the programs that focus on biodiversity in Brazil, signed by several researchers with comments and concerns. There are also studies on the perception of exotic species in a megadiverse country, mortalities of planktonic microcrustaceans, and the evaluation of gene flow in freshwater shrimps.

In Cellular and Molecular Biology there are some papers dealing with nanoparticles among which a study on antitumor properties of DEX-ATO nanoparticles and the application of taurine linked gold nanoparticles (Tau-AuNPs) on muscle recovery. There are also contributions on DNA damages in estuarine fish, growth patterns of toad species from Spain, and how decellularization of murine skeletal muscles might be affected by different methods.

In Microbiology, readers will find a study on how ants can be used to assess sanitary conditions in urban schools and the first record of Trypanosoma parasitizing a neotropical frog species.

Lastly, I would like to call your attention to a study on the issues surrounding the benefits of diversified agricultural systems (Social Sciences).

I wish to remind you that since 2000 all papers published by the AABC can be downloaded free of charge at the SciELO site and previous editions of the Newsletter are available at the ABC website.

Please scroll through the text and click on the title of the article that interests you -there is surely a contribution to your own studies!

Alexander W. A. Kellner
Editor-in-Chief

MATHEMATICAL SCIENCES

1- A new class of distributions as a finite functional mixture using functional weights

DALAL LALA BOUALI, CHRISTOPHE CHESNEAU, VIKAS KUMAR SHARMA & HASSAN S. BAKOUCH

We describe a novel family of distributions in which the probability density function is defined as a weighted sum of two probability density functions, one of which is a warped counterpart of the other. We concentrate on a special scenario based on a three-parameter exponential distribution, a dilation transformation, and a weight with polynomial decay, which results in a new life-time distribution. The explicit expressions of the suggested distribution's moments generating function, moments, and quantile function are presented. The method of maximum likelihood estimation is used to estimate the parameters. Two examples of practical data sets are shown.

 Read here

CELLULAR AND MOLECULAR BIOLOGY

2- Microsatellite Markers for Bearded Capuchins (Sapajus libidinosus): Transferability and Characterization

BÁRBARA L.C. DE MORAES, DANIELA B. BORGES, JOÃO PEDRO SOUZA-ALVES, JEAN PHILLIPE BOUBLI & BRUNA BEZERRA

Populations of bearded capuchins, Sapajus libidinosus, are declining due to fragmentation, habitat loss, and the illegal pet trade. Molecular markers are not available for them, making it challenging to develop population genetics studies to understand how their genetic diversity is affected by these disturbances. Here tested the transferability of 14 microsatellite markers to bearded capuchins. These markers were developed for Cebus capucinus (white-faced capuchins). Six of the tested microsatellite markers (tetra-nucleotide) cross-amplified in our target species. The microsatellite markers transferred to bearded capuchins and characterised in our study will help investigations on genetic variability of wild and captive populations. 

 Read here

3- An integrative study of the invasivejumping-snail Ovachlamys fulgens (Gastropoda, Helicarionidae) in Rio de Janeiro and its fast spreading in Southeastern and Southern Brazil

CAROLINA R. MARCHI, JESSICA CORRÊA-ANTÔNIO, PAULO SÉRGIO RODRIGUES, MONICA A. FERNANDEZ, SILVANA C. THIENGO, HELENE S. BARBOSA & SUZETE R. GOMES

The Japanese jumping snail Ovachlamys fulgens is a pest of ornamental plants and intermediate host of nematodes of medical importance. We expand its distribution to eight municipalities from Rio de Janeiro State, and one locality from the Paraná State, and generated DNA barcodes for Brazilian populations. The species is also morphologically identified. We highlight and discuss about the invader potential of this species that demonstrate be adapted to many habitats and to be rapidly expanding its distribution in Southeastern and Southern Brazil, and other South America countries.

 Read here

4- Stereological analysis of the New Zealand rabbits (Oryctolagus cuniculus) placenta

CARLA M.F. DE CARVALHO, LUCIANO C.P.C. LEONEL, LUCIANA S. SIMÕES, TAIS H.C. SASAHARA, DANIELE S. MARTINS, PHELIPE O. FAVARON & MARIA A. MIGLINO

We aim to evaluate the placental compartments in New Zealand rabbits by means of stereological methods. The fetal and maternal portion of placenta (12, 14, 18 and 20 gestational days) was randomly sampled for the stereological analysis. Histological sections were scanned to estimate fetal (labyrinth and junctional) and maternal (decidua) compartment volumes. We concluded that the rabbit´s placenta compartments varied according to the gestational period, increasing continuously over the 20 gestational days. However, on the onset of the development of the placenta the decidua presented faster growth, whereas after the 20 days of development, the labyrinth developed more quickly.

 Read here

5- Orthogonal test design for optimizing culture medium for in vitro pollen germination of interspecific oil tea hybrids

RUI ZHAO, XIAO HU, DEYI YUAN, JOSEPH MASABNI, HUAN XIONG & FENG ZOU

Oil Tea (Camellia oleifera) is an important woody edible oil plant in China, which suffers from low rate of fruit set during production. Pollen grain performance, including pollen germination and tube growth rate, is an important component of successful fertilization and fruiting for oil tea hybrids. In this paper, the optimum medium for pollen tube growth was 1% agar, 150 g·L^-1 sucrose, 0.15g·L^-1 H₃BO₃, 0.07 g·L^-1 MgSO₄, and 0.01 g·L^-1 IAA by the orthogonal test design method. These results may provide useful information for promoting pollen tube growth of oil teain practice.  

 Read here

6- An Efficient Synthesis of Novel Dextran-Arsenite Nanoparticles intended for Potential Antitumor Drug Material

WEIBING LAN, SHAN CHEN & GUANGZAI NONG

In this work, DEX-ATO nanomaterials from DEX and ATO were synthesized by sulfuric acid catalysis using a microwave heating method. The DEX-ATO nanoparticles were characterized, and the factors affecting their size were investigated. Besides, the antitumor properties of the product were evaluated. The results indicated the product was an arsenite-based nanomaterial retaining the basic configuration of DEX and that the product size was positively correlated with pH but negatively correlated with ATO concentration. Besides, the product could inhibit the proliferation of these three tumor cell lines (HCT-116, Huh-7 and SMMC-7721). The work can provide a new type of functional nanomaterial.

 Read here

7- Brain and plasma amino acid concentration in infant rats prenatally exposed to valproic acid

ÁNGEL ALBERTO PUIG-LAGUNES, LUISA ROCHA, CONSUELO MORGADO-VALLE, LUIS BELTRÁN-PARRAZAL & MARÍA-LEONOR LÓPEZ-MERAZ

Autism spectrum disorder is associated with alterations in GABAergic and glutamatergic neurotransmission. In this study, we aimed to determine the concentration of GABA, glutamate, glutamine, aspartate, taurine, and glycine in brain tissue and plasma of rats prenatally exposed to valproic acid (VPA), a well-characterized experimental model of autism. We found that, in VPA rats, glutamate and glutamine concentrations were increased in hippocampus and glycine concentration was increased in cortex. However, we did not find changes in plasma amino acid concentration. Our results suggest that VPA exposure in utero may impair inhibitory and excitatory amino acid transmission in the infant brain. 

 Read here

8- The essential oils of Grewia Lasiocarpa E. Mey. Ex Harv.: chemical composition, in vitro biological activity and cytotoxic effect on Hela cells

NNEKA AUGUSTINA AKWU, YOUGASPHREE NAIDOO, SADASHIVA THIMMEGOWDA CHANNANGIHALLI, MOGANAVELLI SINGH, NIRASHA NUNDKUMAR & JOHNSON LIN

Plants, like all living things, metabolise, with essential oils (EOs), being one of their metabolic products. These EOs are termed ‘secondary metabolites’ because they are not involved in the growth, reproduction and development of plants. Essential oils usually have a characteristic smell. Grewia lasiocarpa  E. Mey. ex Harv. is an indigenous medicinal Southern African plant rich in EOs such as phytol, α-farnesene,  n-hexadecanoic acid, farnesol, heptacosane, and heptadecane. These EOs have been reported to have medicinal properties such as antibacterial, anti-inflammatory, antioxidant activities etc. This study is the first report on the EOs of Grewia lasiocarpa E. Mey. ex Harv. 

 Read here

9- Effect of taurine associated gold nanoparticles on oxidative stress in muscle of mice exposed to overuse model

ANAND THIRUPATHI, HELEN R. SORATO, PAULO R.L. SILVA, ADRIANI P. DAMIANI, VANESSA M. ANDRADE, PAULO C.L. SILVEIRA, RENATA T. NESI, MARCOS M.S. PAULA & RICARDO A. PINHO

Overuse of exercise induced muscle damage is linked with increased concentration of oxidants and decreased activity of antioxidant defense system. Therefore, this study was assessed the role of taurine linked gold nanoparticles (Tau-AuNPs) on muscle recovery of muscle overuse model. As expected, the overuse of animals had increased oxidative damage and DNA damage when compared to animals that were administrated to Tau-AuNPs. Interestingly, Tau-AuNPs did not have any effect on decreasing DNA damage. Although, both Tau-AuNPs had no effect on decreasing DNA damage, it had effect on transcription factors like Myf-5 suggesting the role of Tau-AuNPs on muscle recovery.  

 Read here

10- Isolation of 27 polymorphic nuclear microsatellite markers for Roupala montana var. brasiliensis (Proteaceae)

FERNANDA B. PEREIRA, ALEXANDRE M. SEBBENN, BRUNO C. ROSSINI, GUILHERME F. MELCHERT, CELSO L. MARINO, PAULO E.M. RIBOLLA, DIEGO P. ALONSO, EDSON VIDAL & EVANDRO V. TAMBARUSSI

Molecular information can be used to assist the decision-making process for forest conservation and improvement programs, increasing the efficiency of the processes like seed collection and, exploration and/or enrichment of the genetic base, among others. In this sense, the development of molecular tools for species of interest is a key to the success of such processes. In this work, we develop 27 microsatellite primer pairs for the Neotropical tree Roupala montana var. brasiliensis suitable for use in studies on genetic diversity, mating system, and gene flow.

 Read here

11- DNA damage in an estuarine fish inhabiting the vicinity of a major Brazilian port

SOLANGE F. ALMEIDA, MARTA R.C. BELFORT, MARCO V.J. CUTRIM, LUIS F. CARVALHO-COSTA, SILMA R.F. PEREIRA & RICARDO LUVIZOTTO-SANTOS

The environmental liability of ports must be known in order to be mitigated. Therefore, we investigated the impacts of a large Brazilian port (Itaqui, Maranhão) on the local fauna. We revealed that fish collected near the port have more DNA damage than fish collected in a more distant area without ports. This might be due to certain chemical elements in the water in quantities above what is tolerated by the Brazilian environmental law. Continuous monitoring and mitigation of such impacts can make Brazilian ports more sustainable.

 Read here

12- Biological effects of chronic exposure of Blaptica dubia (Blattodea: Blaberidae) nymphs to static and extremely low frequency magnetic fields

LARISA ILIJIN, MARIJA MRDAKOVIĆ, DAJANA TODOROVIĆ, MILENA VLAHOVIĆ, ANJA GRČIĆ, ALEKSANDRA FILIPOVIĆ & VESNA PERIĆ-MATARUGA

In this paper, we analyzed the effects of chronic exposure (5 months) to static magnetic field (110 mT; SMF) and extremely low frequency magnetic field (ELF MF; 10 mT, 50 Hz) on Blaptica dubia Serville (Blattodea: Blaberidae) nymphs. We have examined. Nymphs relative growth weight was not significantly changed in both magnetic fields.  Both magnetic fields decreased the activity of acetylcholinesterase. Static magnetic field increased level and changed the expression of HSP70 isoforms. Results provide an insight into the biological effects of electromagnetic pollution.

 Read here

13- Can age and growth patterns explain the geographical variation in the body size of two toad species?

FEDERICO MARANGONI, MIGUEL TEJEDO & DAN COGĂLNICEANU

Amphibian populations in southern Spain show a high geographic variation in body size. We analysed the variation in age structure and growth pattern in two toad species across a transect 120 km long. Our study showed that the small-bodied populations achieve earlier sexual maturity, allowing for a longer potential reproductive lifespan. Thus, females from both large and small-bodied populations in both species tend towards depositing a similar number of eggs during their lifespan, by either growing a larger body size and producing a larger clutch size, or maturing earlier and increasing the reproductive lifespan.

 Read here

14- Morphological characterization of blue-and-yellow macaw (Ara ararauna) seasonal testicular variations in captivity

MARIANA G. MOREIRA, EDSON J. BENETTI, ANA C.S. REBELO, GESSICA C. SOUSA, MAX V.M. MEDEIROS, LUCÉLIA G. VIEIRA, RENATA C. MAZARO & KARINA SIMÕES

Birds are under the influence of environmental conditions to be successful in their reproduction. The research aimed to evaluate the reproductive potential of the blue-and-yellow macaw (Ara ararauna), in captivity conditions, under the natural influence of rainy and dry periods in the Cerrado Biome. For this, the testicles were evaluated for anatomical and histological aspects. We conclude that the blue-and-yellow macaw presented a reproductive potential during the rainy season in the Cerrado and, with an adequate management program, it will be possible to reproduce the species in captivity.

 Read here

15- Gametogenesis and reproductive dynamics of Scinax acuminatus (Anura: Hylidae): morphological, histological and immunohistochemical analysis

GABRIELA OLEA, ESTEBAN CHEIJ, ANA PAULA C. BOCCIONI, FLORENCIA RODRIGUEZ, JORGE CÉSPEDEZ & DANIEL LOMBARDO

In this work, the morphology of the reproductive system of Sinax acuminatus, a species from Corrientes Argentina, was analyzed at anatomical, histological and immunohistochemical levels. There were found females with ovaries with oocytes in different stages of maturity and post-ovulatory females. Males presented continuous spermatogenesis, which could be confirmed by the immunostaining of PCNA in spermatogonia during the whole cycle.  These results are the basis for the characterization of the reproductive cycle in S. acuminatus and an important fact to know the reproductive cycles of the genus.

 Read here

16- Impact of climate change on the current and future distribution of threatened species of the genus Lessingianthus (Vernonieae: Asteraceae) from the Brazilian Cerrado

MARÍA BETIANA ANGULO, GISELA VIA DO PICO & MASSIMILIANO DEMATTEIS

One of the challenges facing science today is the search for solutions to global environmental problems. Among them, preventing biodiversity loss and mitigating the effect of climate change on biodiversity conservation are the most urgent imperatives of the 21st century. The South American Lessingianthus genus (Asteraceae) includes numerous endangered species, some of which grow in the Brazilian Cerrado, a Neotropical savanna considered a world’s biodiversity hotspot. In this work, we evaluate the effect of climate change on the habitat of threatened Lessingianthus species and on their potential distribution, assessing the effectiveness of current protected areas (PAs) using ecological niche models.

 Read here

17- Effects of chemical and physical methods on decellularization of murine skeletal muscles

CARLA M.F.C. MIRANDA, LUCIANO C.P.C. LEONEL, RAFAEL R. CAÑADA, DURVANEI A. MARIA, MARIA ANGÉLICA MIGLINO, MARIANO DEL SOL & SONJA E. LOBO

Biological biomaterials composed of extracellular matrices from decellularized tissues or organs have been extensively investigated as therapeutic strategies to regenerate tissues, such as required in volumetric muscle loss. However, unwanted immune responses are the biggest disadvantage and concern in the use of such biomaterials. Decellularization should ideally remove cells, cells’ remnants and DNA content to decrease potential immunoreactions. Conversely, processing should not damage the extracellular matrix proteins and tridimensional structure. Decellularization can be performed using chemical, physical, enzymatic methods, or with a combination of them. For this reason, stablishing a protocol that is tissue specific is essential for further studies.  

 Read here

18- Development of an analytical method for determination of polyphenols and total tannins from leaves of Syzygium cumini L. Skeels

CAMILA L. GOMES, CAIO C.A.R. SILVA, CAMILA G. DE MELO, MAGDA R.A. FERREIRA, LUIZ A.L. SOARES, ROSALI M.F. DA SILVA, LARISSA A. ROLIM & PEDRO J. ROLIM NETO

Plants have several chemical substances in their composition that can be used to bring benefits to humanity, especially in the health area. Such substances need to be studied, in order to obtain the maximum knowledge about their positive and also negative activities, if any. Therefore, it is necessary to have an adequate and reliable methodology so that the quantification of these chemical components present in plant samples can be performed. Knowing this, this study presents the development of an analytical methodology capable of performing the quantification of polyphenols and total tannins, in leaves of S. cumini.

 Read here

MICROBIOLOGY

19- Novel insights in bacterial vaginosis etiology through genomic approaches

MARCELLE O. ALMEIDA, MARCUS VINICIUS C. VIANA, JANAÍNA C. CERQUEIRA, FLAVIA F. ABURJAILE, ANDREY A.Z. JUNIOR, VASCO AZEVEDO & RODRIGO D.O. CARVALHO

This review article describes the contributions and limitations of genomic analysis of vaginal lactobacilli strains for investigating the etiology of bacterial vaginosis. In this context, our work suggests that some genetic factors from Lactobacillus, specifically L. crispatus  are associated with phenotypes, such as increased colonization and persistence, which is generally considered important for the vaginal homeostasis.

 Read here

20- Reduction in concentration of chromium (VI) by Lysinibacillus macroides isolated from sediments of the Chapala Lake, Mexico

CLAUDIA C. HERNÁNDEZ-PEÑA, FERNANDO LARES-VILLA, SERGIO DE LOS SANTOS-VILLALOBOS, MARÍA ISABEL ESTRADA-ALVARADO, ALEJANDRO CRUZSOTO, EDITH FLORES-TAVIZÓN & MARISELA Y. SOTO-PADILLA

The manuscript is interesting because it addresses the topic of native bacteria of Lake Chapala in Mexico where there is not much research on the microbial flora present, besides the possible application of this bacteria for reducing hexavalent chromium which is a contaminate very important in various sites. This study contribute to better understand the utilization of the native microbial communities as a biotechnological tool for the bioremediation of contaminated water reservoirs.

 Read here

21- Yeast as growth promoter in two breeds of growing rabbits with special reference to its economic implications

AYMAN H. ABD EL-AZIZ, KHALID M. MAHROSE, NAGWA I. EL-KASRAWY & ABD ELWAHAB A. ALSENOSY

The present study investigated the effects of dietary supplementation of Saccharomyces cerevisiae (SC) on growth performance, carcass traits, blood biochemicals, histological changes in intestinal wall and economic indices in two breeds of weanling rabbits (V-Line and Rex). Dietary supplementation of SC accelerated weight gain, reduced feed conversion ratio, blood total glycerides and cholesterol, while increased blood total protein, albumin, Brunner`s gland, villi and economic profit. V-line fed diet supplemented with SC had the highest percentages of loin and dressing. Dietary supplementation of SC had beneficial effects on growth performance and profitability of rabbits and is highly recommended in growing rabbits.

 Read here

22- Rosmarinus officinalis L. (rosemary) extract has antibiofilm lm effect similar to the antifungal nystatin on Candida samples

VANESSA M. MECCATTI, JONATAS R. DE OLIVEIRA, LEANDRO W. FIGUEIRA, AMANDIO A. LAGAREIRO NETTO, LUCAS S. ZAMARIOLI, MARIA C. MARCUCCI, SAMIRA E.A. CAMARGO, CLÁUDIO A.T. CARVALHO & LUCIANE D. DE OLIVEIRA

In this study, the antifungal effect of Rosmarinus officinalis L. (rosemary) extract was found both on planktonic cultures (non-adherent cells) and biofilms (adherent cells) of Candida spp. (C. albicans, C. dubliniensis, C. glabrata, C. krusei, and C. tropicalis) after exposure to different concentrations of this natural product, for 5 min or 24 h. Thus, an integrative way to control these microorganisms was observed using this plant material. Candida spp. are naturally opportunistic and can promote infections. Besides, increased resistance to the available antifungals has also become a concern.  

 Read here

23- First record of Trypanosoma sp. (Kinetoplastea: Trypanosomatidae) parasiting Rhinella major in the Brazilian Amazon

TÁSSIO A. COÊLHO, DARLISON C. DE SOUZA, RICARDO A. KAWASHITA-RIBEIRO & LINCOLN L. CORRÊA

Rhinella major is a frog distributed in the Neotropical region of the South America. This frog species is characterized by small glands and rough skin. In this study, we reported the first record of Trypanosoma sp. in R. major. Only one morphological type of trypomastigotes was observed, infecting four amphibians out of a total of 44 individuals captured, this frog being a new host for this parasite. Herein, we detail the need for studies on the parasitic diversity of amphibians in the Brazilian Amazon region.

 Read here

24- Ants (Hymenoptera: Formicine) as Carriers of Microorganisms Indicating Hygienic and Sanitary Conditions in Urban Schools

CARIN GUARDA, JUNIR A. LUTINSKI, CARLA R.P.A. TEO & MARIA A. BUSATO

The presence of ants in school kitchens and canteens may pose a risk of food contamination. This study aimed to evaluate the potential of the ants as carriers of microorganisms indicating hygienic and sanitary conditions in school kitchens and canteens in the western region of Santa Catarina. The ants were evaluated using microbiological analyses regarding Staphylococcus aureus, aerobic mesophilic bacteria, total coliforms and thermotolerant coliforms/Escherichia coli. Twenty ant species were sampled. The results evidenced the potential of ants as indicators of contamination and the risk of ants to carrier microorganisms in school environments.

 Read here

25- Purple grape juice consumption during the gestation reduces acetylcholinesterase activity and oxidative stress levels provoked by high-fat diet in hippocampus from adult female rats descendants

ISABEL C.T. PROENÇA, LUCIANA K. GONÇALVES, FELIPE SCHMITZ, ALEXANDRE MELLO, CLAUDIA S. FUNCHAL, ANGELA WYSE & CAROLINE DANI

Recent studies, in experimental models, have reported the reduction of acetylcholinesterase (AChE) levels having a neuroprotective effect on AD. Grape juice is also associated to neuroprotective effect in different models. The main objective of this study was to show the deleterious effects of the hyperlipid diet and the beneficial effect of the consumption of grape juice during gestation to the offspring in an experimental model. We observed that high-fat diet consumption during the pregnancy increased the AChE activity and protein oxidation and the other hand the grape juice reduced these parameters in descendants.

 Read here

26- Optimized microwave-assisted extraction of polyphenols and tannins from Syzygium cumini (L.) Skeels leaves through an experimental design coupled to a desirability approach

CAIO C.A.R. SILVA, CAMILA L. GOMES, LUCAS J.A. DANDA, ANA EMÍLIA M. ROBERTO, ANA MARIA R. DE CARVALHO, EULÁLIA C.P.A. XIMENES, ROSALI M.F. DA SILVA, MATHEUS A. ANGELOS, LARISSA A. ROLIM & PEDRO J. ROLIM NETO

Over the years, several plant species have been used to treat infections, often difficult to solve. For it to be used safely, it is necessary to know which compounds are present in these vegetables and which are responsible for their pharmacological effects. With this information, the researchers seek to improve the means of extraction to enhance their activities. Given the above, this study aimed to optimize the extraction of polyphenols present in the leaves of Syzigium cumini (jambolan) and to evaluate the antimicrobial activity of the optimized extract against resistant fungi and bacteria.

 Read here

27- The effect of carbohydrates on the adherence of Pasteurella multocida to the nasal respiratory epithelium

CAROLINA GALLEGO, PILAR PATIÑO, NHORA MARTÍNEZ & CARLOS IREGUI

In domestic animals destined for human consumption, one of the main groups of pathologies that affect their sanitary and productive condition are bacterial diseases of the respiratory tract, with P. multocida being of great relevance. In this study, carried out in rabbits, it was possible to prevent the adherence of P. multocida to the nasal epithelium through the use of various carbohydrates administered intranasally and intratracheally, thus significantly reducing the presentation of lesions and symptoms induced by this bacterium.  

 Read here

ECOSYSTEMS

28- Gonadal development in pejerrey (Odontesthes bonariensis) during spawning season in relation with sex steroids and temperature variation in Gómez lake (Pampas region, Argentina)

PAMELA S. DEL FRESNO, DARÍO C. COLAUTTI, GUSTAVO E. BERASAIN & LEANDRO A. MIRANDA

Gómez is a typical shallow lake of Pampas region where inhabit he pejerrey fish valued due to its flesh and as a sport game. In this study it was confirmed the strong relation between gonadal maturation, sexual steroids and temperature in a wild pejerrey population. Females started to ovulate in early August (winter), with a peak in October and ending in Decembe. For males, it was possible to find spermiating animals during the whole spawning season and some arrested animals only in December. The results obtained can be useful for decision making in the management of this natural resource.

 Read here

29- Exotic species are perceived more than native ones in a megadiverse country as Brazil

ERIKA P.C. DE MELO, JULIANA SIMIÃO-FERREIRA, HERSON P.C. DE MELO, BRUNO S. GODOY, RODRIGO D. DAUD, ROGÉRIO P. BASTOS & DANIEL P. SILVA

How do high-school students perceive the exotic fauna in Brazil? Do the students perceive different species from several zoological groups? Do protected areas exert any effect upon their perception of exotic biodiversity? Those were the main questions we tried to answer in this manuscript. As our main results, the students perceive exotic fauna more prominently than the native species and that vertebrate species are more perceived than invertebrate ones. Finally, we did not detect any effect related to the existence of a protected area within a municipality in the students’ perception of native species.

 Read here

30- Non-predatory mortality of planktonic microcrustaceans (Cladocera and Copepoda) in neotropical semiarid reservoirs

LEIDIANE P. DINIZ, ELTON J. FRANÇA, CLAUDIA C. BONECKER, CATARINA R. MARCOLIN & MAURO DE MELO JÚNIOR

The accuracy of traditional methods to sample planktonic microcrustaceans depends on two assumptions: that organisms are alive during sampling and that all carcasses can be identified despite their degradation state, but fresh carcasses are not easy to distinguish by traditional methods. Previous studies have shown that neglecting dead organisms can provide biased information. Our objective was to determine the mortality rate and the proportion of dead microcrustacean in three reservoirs. Traditional preservation techniques with formalin do not significantly overestimate species abundance. However, other studies need to be conducted over larger temporal scales to better establish mortality patterns in freshwater ecosystems.

 Read here

31- Evaluation of different induced molting methods in Callinectes ornatus (Crustacea, Decapoda, Portunidae) as a tool for the commercial production of soft-shell crabs

CAMILA P.S. TAVARES, UBIRATÃ A.T. DA SILVA, LEANDRO ÂNGELO PEREIRA & ANTONIO OSTRENSKY

Soft-shell crabs are a high-value gastronomic delicacy, cultivated for more than 100 years in the US and several Asian countries. However, as the soft-shell crabs production depends directly on fishing, the main limiting factor is the absence of safe and stable sources of animals in premolt stage, requiring molt induction methods to be exploited. This study aimed to test three techniques of molt induction in Callinectes ornatus kept in the laboratory. Our results indicate bilateral eyestalk ablation and cheliped autotomy are potentially capable of inducing molt, but these techniques have limited efficiency for the commercial application of large-scale soft-shell crab.

 Read here

32- Phylogenomic analyses reveals gene flow between populations of the freshwater shrimp Potimirim brasiliana (Caridea, Atyidae) along its wide distribution

FERNANDO L. MANTELATTO, ANA LUIZA VERA-SILVA, BÁRBARA MATOS DO PRADO & LEONARDO G. PILEGGI

Potimirim brasiliana is a tiny shrimp which occurs in coastal pristine freshwater habitats of Brazil. We performed molecular analyses with specimens from all known limit of distribution of the species to check genetic variability. No pattern of genetic structuration was found and can be explained by its life cycle. Our findings provide a new perspective about the evolution of the genus and the results serve as theoretical basis for the development of management strategies for conservation proposes since P. brasiliana is endemic to Brazilian drainages and the genetic connectivity found within the geographical regions is important to maintain the genetic variability and prevent local extinction.

 Read here

33- Leafhopper food plants in a Neotropical forest in Panama (Hemiptera: Cicadellidae)

EDWIN DOMÍNGUEZ, VIELKA MURILLO & JACQUELINE ORWAT

The leafhoppers (Hemiptera: Cicadellidae) are insects that suck sap from vascular plants, the most of host plants are unknown for the Neotropical rainforest. The aim was to record the food and host plants for leafhoppers in a Neotropical rainforest. The study area was located in the lowland forests of Panama (Central Panama), in two National Parks. Sampling was done in the undergrowth, canopy and emergent strata to collect the insects feeding on the trees, shrubs, seedlings, and vines. We collected 118 leafhopper adults representing 24 species, 21 genera, and six subfamilies, which fed on 49 species of plants (31 families). 

 Read here

34- Morphological abnormalities in Acartia lilljeborgii Giesbrecht (1889) (Copepoda, Calanoida) in a tropical estuary under industrial development

PEDRO A.M. DE CASTRO MELO, SIGRID NEUMANN-LEITÃO, ELIETE ZANARDI-LAMARDO, MANUEL J. FLORES-MONTES & MAURO DE MELO JÚNIOR

Morphological abnormalities were recorded for the first time in the copepod Acartia lilljeborgii (crustacean) in an area with severe anthropic impacts. The specimens came from the Port of Suape estuary (NE, Brazil), in 2009/2010. Seven types of abnormalities were observed in one of the terminal spines of the body, with no temporal variation. Deformities occurred in 85.7% of the samples and in up to 10% of the individuals. The proportion of females with abnormalities was higher than those of males, contrary to most previous reports. With distribution and abundance in neotropical coastal areas of the Atlantic, this species has the potential to be used as a bioindicator of environmental conditions.

 Read here

35- The Program for Biodiversity Research in Brazil: The role of regional networks for biodiversity knowledge, dissemination, and conservation

CLARISSA ROSA, FABRICIO BACCARO, CECILIA CRONEMBERGER, JULIANA HIPÓLITO, CLAUDIA FRANCA BARROS, DOMINGOS DE JESUS RODRIGUES, SELVINO NECKEL-OLIVEIRA, GERHARD E. OVERBECK, ELISANDRO RICARDO DRECHSLER-SANTOS, MARCELO RODRIGUES DOS ANJOS, ÁTILLA C. FERREGUETTI, ALBERTO AKAMA, MARLÚCIA BONIFÁCIO MARTINS, WALFRIDO MORAES TOMAS, SANDRA APARECIDA SANTOS, VANDA LÚCIA FERREIRA, CATIA NUNES DA CUNHA, JERRY PENHA, JOÃO BATISTA DE PINHO, SUZANA MARIA SALIS, CAROLINA RODRIGUES DA COSTA DORIA, VALÉRIO D. PILLAR, LUCIANA R. PODGAISKI, MARCELO MENIN, NARCÍSIO COSTA BÍGIO, SUSAN ARAGÓN, ANGELO GILBERTO MANZATTO, EDUARDO VÉLEZ-MARTIN, ANA CAROLINA BORGES LINS E SILVA, THIAGO JUNQUEIRA IZZO, AMANDA FREDERICO MORTATI, LEANDRO LACERDA GIACOMIN, THAÍS ELIAS ALMEIDA, THIAGO ANDRÉ, MARIA AUREA PINHEIRO DE ALMEIDA SILVEIRA, ANTÔNIO LAFFAYETE PIRES DA SILVEIRA, MARILUCE REZENDE MESSIAS, MARCIA C.M. MARQUES, ANDRE ANDRIAN PADIAL, RENATO MARQUES, YOUSZEF O.C. BITAR, MARCOS SILVEIRA, ELDER FERREIRA MORATO, RUBIANI DE CÁSSIA PAGOTTO, CHRISTINE STRUSSMANN, RICARDO BOMFIM MACHADO, LUDMILLA MOURA DE SOUZA AGUIAR, GERALDO WILSON FERNANDES, YUMI OKI, SAMUEL NOVAIS, GUILHERME BRAGA FERREIRA, FLÁVIA RODRIGUES BARBOSA, ANA C. OCHOA, ANTONIO M. MANGIONE, AILIN GATICA, M. CELINA CARRIZO, LUCÍA MARTINEZ RETTA, LAURA E. JOFRÉ, LUCIANA L. CASTILLO, ANDREA M. NEME, CARLA RUEDA, JOSÉ JULIO DE TOLEDO, CARLOS EDUARDO VIVEIROS GRELLE, MARIANA M. VALE, MARCUS VINICIUS VIEIRA, RUI CERQUEIRA, EMÍLIO MANABU HIGASHIKAWA, FERNANDO PEREIRA DE MENDONÇA, QUÊZIA LEANDRO DE MOURA GUERREIRO, AUREO BANHOS, JEAN-MARC HERO, RODRIGO KOBLITZ, ROSANE GARCIA COLLEVATTI, LUÍS FÁBIO SILVEIRA, HERALDO L. VASCONCELOS, CECÍLIA RODRIGUES VIEIRA, GUARINO RINALDI COLLI, SONIA ZANINI CECHIN, TIAGO GOMES DOS SANTOS, CARLA S. FONTANA, JOÃO A. JARENKOW, LUIZ R. MALABARBA, MARTA P. RUEDA, PUBLIO A. ARAUJO, LUCAS PALOMO, MARTA C. ITURRE, HELENA GODOY BERGALLO & WILLIAM E. MAGNUSSON

The paper presents the evolution of the Program for Biodiversity Research (PPBio), a Brazilian program that act in sampling sites where standardized methodologies are used to allow the study and comparisons of biodiversity data across biomes and through time. The PPBio cover researchers ranging from natural history to genetics and species distribution. Most of the data are available through PPBio web sites or DataONE. The Program fostered local technical capacity building and supported the training of hundreds of students. The main challenge is maintaining the long-term funding necessary to understand biodiversity patterns and processes under pressure from global environmental changes.

 Read here

36- Impact of gamma radiation dose on sterility and quality parameters of Anastrepha fraterculus (Diptera: Tephritidae)

ALEXANDRA P. KRÜGER, MÁRCIO S. FERREIRA, LILIANE N. MARTINS, CRISTIANO M. TEIXEIRA, DANIELE C.H. SCHLESENER, MARÍNDIA DEPRÁ & FLÁVIO R.M. GARCIA

The sterile insect technique is a potential alternative to the management of the South American fruit fly, Anastrepha fraterculus. This technique is based on the rearing and sterilization of individuals, that will be released in the field so they can mate with wild insects. In order to use this technique, it is necessary to determine the ideal radiation dose to guarantee insect sterilization without affecting their quality, so they can compete for mating once released. In this species, complete female sterilization was achieved with 50 Gy, while for males a dose of 70 Gy was necessary.

 Read here

37- Additions to the bee Brazilian fauna: first record of Anthrenoides, Callonychium and Psaenythia (Hymenoptera, Apoidea) in the state of Piauí

KELLI S. RAMOS, HELENA C. ONODY & CARLOS R.F. BRANDÃO

Scientists from the Universidade de São Paulo and Universidade Estadual do Piauí present new distributional records for the bee genera Callonychium Brèthes, Psaenythia Gerstaecker and Anthrenoides Ducke in the Piauí State. The new occurrences reported expand the distribution range of the species to the Caatinga biome and improve the knowledge of this largely unexplored fauna in Piauí.

 Read here

38- Feeding Preference of Altica deserticola (Coleoptera: Chrysomelidae: Alticinae) for Leaves of Glycyrrhiza inflata and G. uralensis

PENG YOU CHEN, HONG LEI CHANG & MIAO MA

Our study tested the feeding preferences of adults and larvae of Altica deserticola, a disaster pest of liquorice, for leaves of two liquorice species. Results showed that the adults preferred Glycyrrhiza inflata, although they fed on the both plants, whereas the larvae fed only on Glycyrrhiza uralensis. The leaves of G. inflata are thicker and harder, with thicker cuticle, and higher nitrogen and tannin content compared to the leaves of G. uralensis. We believe that the differences in morphological and chemical properties between the two plants caused the different feeding resistance of the two plants to A. deserticola.

 Read here

39- First description of wild-collected ephyrae of Lychnorhiza lucerna (Cnidaria, Scyphozoa)

RENATO M. NAGATA, PRISCILA TEIXEIRA-AMARAL, VITÓRIA R. LEMOS, MAYARA A. JORDANO, ERIK MUXAGATA & ANDRÉ C. MORANDINI

Lychnorhiza lucerna is the most common large scyphozoan jellyfish from tropical and subtropical Southwest Atlantic. Although the species is easily cultivated and many aspects of its development, functional morphology, feeding, reproduction, and ecological associations have been studied, there is a large gap in knowledge about the young medusa stage, the "ephyra", in nature. We found ephyrae of this species in the Patos Lagoon Estuary, extreme south of Brazil.  Wild specimens were compared with laboratory-reared counterparts. This highlights the important role of estuaries in the early species life cycle and provides important evidence about the settlement site of its benthic polyps, which have never been found in nature.

 Read here

40- Basking and retreat site selection of Phymaturus palluma, a rock-dwelling lizard in the Highlands of Aconcagua

NADIA VICENZI, RUBÉN MASSARELLI, NORA IBARGÜENGOYTÍA & VALERIA CORBALÁN

Identifying the elements of the microhabitat that are used by the animals, and modelling their selection is crucial for assessing the impact of anthropogenic disturbances at the population level and, therefore, focusing on conservation efforts. Here, we studied using resource selection analyses (RSFs), how structural attributes of the microhabitat and biotic factors influence the probability of use of basking and retreat sites by Phymaturus palluma, a high Andean rock-dwelling and viviparous lizard. Our results showed how microhabitat selection of P. palluma is associated with behavioural improvements such as enhancing basking capacity, reducing both intraspecific competition with neighbours and predation risk.

 Read here

41- Diversity of non-marine gastropods of the Fiocruz Atlantic Forest Biological Station and adjacents urban areas, Rio de Janeiro, RJ, Brasil

FLAVIA C.S. RANGEL, SUZETE R. GOMES, THAMIRES CANUTO, PAULO S. RODRIGUES & SILVANA C. THIENGO

Our objective was to perform a preliminary survey of the non-marine gastropods at the Fiocruz Atlantic Forest Biological Station (EFMA), which is part of the Pedra Branca State Park (PEPB), and adjacent urban areas, in Rio de Janeiro, RJ, Brazil. Infections by helminths were investigated in freshwater species and the terrestrial snail Achatina fulica. 584 samples of molluscs from 31 collection sites were obtained and classified in 16 families and 31 species. Fifteen species were exclusive to EFMA. Urban area presented mainly exotic and/or synanthropic species. We found Xiphidiocercarie and Pleurolophocercus cercariae parasitizing Biomphalaria tenagophila and Melanoides tuberculata, respectively.

 Read here

42- Gall midges (Insecta, Diptera, Cecidomyiidae) associated with Clusiaceae in Brazil: richness and distribution

VALÉRIA CID MAIA

The Clusiaceae constitute a Pantropical plant family with medicinal and ornamental species, some restricted to the Atlantic forest. Cecidomyiidae galls have been recorded on some Clusiaceae in Brazil, but the number of gall-inducers and host plant species is still unknown. Data on literature and herbaria were gathered. They totaled thirteen gall morphotypes on three genera and eight plant species. Only three gallers are identified, highlighting the poor taxonomic knowledge. Identified gallers are restricted to the Atlantic Forest as well as their host plants, but their distribution can be wider along this biome since their host plants have wider distribution.

 Read here

43- Artisanal fisheries of native spiny lobster Panulirus meripurpuratus and smoothtail spiny lobster Panulirus laevicauda in the northeast region of Brazil

CARLOS E.R.D. ALENCAR, PAULO V. DO N. ARAÚJO, LARA C. AMORIM, MAURO S.P. LIMA, LIANA DE F. MENDES & FÚLVIO A. DE M. FREIRE

Fishing technology employed in the spiny-lobster captures in Rio Grande do Norte, Northeast Brazil was mainly based on small artisanal boats with compressor diving. An activity associated with various illegal practices in accordance with current laws in Brazil. We also detected a differentiated fishing pressure in the lobster species that occur in the fishing area. Each species populations are being affected in different age groups, which may generate different population dynamics biases over the next few years. Present data are key to establish measures that improve the management of this fishing resource on Northeast Brazil.

 Read here

44- Trophic relationships and use of area of two sympatric small cetaceans in the Southwestern Atlantic Ocean determined by carbon and nitrogen stable isotopes

LAURA B. CAMPOS & MARCOS CÉSAR DE O. SANTOS

As cetaceans are sentinels of the marine environment, studying their life history is of utmost importance in understanding their habits and their interaction with the environment. This study aimed to evaluate if there are differences in the habitat use patterns and the trophic ecology of franciscana (Pontoporia blainvillei) and Guiana dolphins (Sotalia guianensis) on the south coast of São Paulo, southeastern Brazil, based on stable isotopes analysis. The gathered results showed evidence of spatial segregation between Guiana dolphins and franciscanas. Such difference was expected as both species have distinct life histories as a result of different evolutionary pathways.

 Read here

45- Sex chromosomes in the Vizcacheras’ White-lipped frog, Leptodactylus bufonius (Anura, Leptodactylidae)

ROSIO G. SCHNEIDER, JUAN M. FERRO, IVANA N. REINKO, JUAN M. BOERIS, DARÍO E. CARDOZO & DIEGO BALDO

In the present article, we studied the cytogenetics of the Vizcacheras’ White-lipped frog Leptodactylus bufonius, from several localities of Argentina, using cytogenetics techniques. Interestingly, our results revealed heteromorphic XY sex chromosomes in pair 4, evidenced by the C-banding technique. The occurrence of sex chromosomes is poorly known in Anura; however, an impressive variation of sex determination systems was reported, making this group an excellent target of studying the sex chromosomes origin and evolution. The sex chromosomes of L. bufonius are the second known case in Leptodactylus, reinforcing the necessity of extensive karyotypic studies in this genus.

 Read here

46- Fitness and mating compatibility of Chrysodeixis includens (W.) (Lepidoptera: Noctuidae) populations collected in different provinces and crops in Argentina

LUCIANA C. DAMI, MARÍA INÉS HERRERO, AUGUSTO S. CASMUZ, RAÚL A. ALZOGARAY & GERARDO A. GASTAMINZA

Chrysodeixis includens, is an important Plusiinae pest that feeds on soybean, beans, and cotton. This study aimed to characterize the fitness parameters and mating compatibility of geographically distant C. includens populations and on different host plants in Argentina. Intra- and inter-population crosses revealed that C. includens populations from Tucumán and Santiago del Estero provinces did not present any evidence of prezygotic and postzygotic incompatibilities, suggesting that both populations collected from soybean plants belonged to a single wide-ranging species. Prezygotic and postzygotic incompatibilities were detected between populations collected from different crops (soybean and bean).  

 Read here

47- Presence of Ascogregarina culicis and Ascogregarina sp. in natural sympatric populations of Aedes aegypti and Ae. albopictus (Diptera: Culicidae) in Argentina

ANA C. ALONSO, MARINA STEIN & MARÍA V. MICIELI

The gregarines are intracellular parasites of several arthropods, between them, mosquitoes, and sometimes could affect the fitness of these insects. Studies on their biology are important for understanding the invasive behavior of arbovirus mosquito vectors. In the present study, we reported for the first time the finding of Ascogregarina culicis in Aedes aegypti and Ascogregarina sp. in Ae. albopictus populations in subtropical Argentina. Ascogregarina culicis was found during all seasons of the year, with higher prevalence values in spring and autumn. Ascogregarina sp. it was not recorded during the complete sampling period despite the presence of the host.

 Read here

48- Geographic patterns of skull variation in two species of cavies of the genus Microcavia (Rodentia, caviidae)

SOFÍA d’ HIRIART, PABLO TETA & GERARDO R. CUETO

In our paper, we analyzed the spatial variation in cranial morphology of two species of cavies, M. australis and M. maenas, and its relationship with environmental variables. Our results shown that both species presented a north-south clinal gradient in skull size, wihich is in accordance with the Bergmann’s rule, a classical ecogeographic principle. In addition, we found that M. australis, which is the most widely distributed of these two species, presented greater ecomorphological variability than M. maenas, which is more geographically restricted. The distributional range of both cavies coincided with unproductive environments, where temperature represents a limiting factor and, together with rainfall, determine the observed morphological patterns.

 Read here

49- Diet of arthropodophagous bats (Mammalia, Chiroptera) from Northwestern Argentina

SANTIAGO GAMBOA ALURRALDE & MÓNICA DÍAZ

The diet of arthropodophagous bats can be influenced by several factors and its study is critical for understanding their role in the ecosystem as regulators of arthropod abundance.  We analyzed the diet of 12 species from Northwestern Argentina and evaluated differences in diet between well-preserved and disturbed sites, sexes, and seasons. A total of 475 samples were analyzed and the diet of the studied species contained arthropods from eight orders and seven families. The diet of some species was significantly influenced by season and site characteristics, showing that bats could modify its diet according to the different habitats and seasons.

 Read here

50- Qualitative and quantitative study of parasites of Pimelodus maculatus and Rhamdia quelen from the Jacaré-Pepira River, state of São Paulo, Brazil

DÉBORA C. NEGRELLI, JOSÉ IANNACONE, VANESSA D. ABDALLAH & RODNEY K. DE AZEVEDO

The objective of this manuscript was to report on the biodiversity of the parasites found in two species of fish Pimelodus maculatus and Rhamdia quelen, whose hosts are of great commercial importance in the interior of the state of São Paulo, Brazil. Also, the basis of this manuscript was to verify the parasite-host relationships, analyzing the type of distribution, diversity, richness, and uniformity of the parasites and the influence of the length, weight, and sex of the hosts to the parasitism.

 Read here

51- Population structure and growth of two opulations of Aegla Schmitti Hobbs III, 1979 (Anomura, Aeglidae) in the eastern Paraná state, Brazil

ANDRÉ TREVISAN, MURILO Z. MAROCHI & SETUKO MASUNARI

Studies concerning the dynamics and population structure are important to increased knowledge of the ecological diversity of ecosystems. We described the structure of two populations of Aegla schmitti, including aspects of the size class distribution frequency, sex ratio and recruitment period. The parameters related to population growth were also determined and tested for sampling bias regarding the capture methods used. The results characterized the growth patterns of A. schmitti in two hydrographic basins providing information for the species’ preservation and demonstrated the selectivity of the different methods used for aeglids sampling.

 Read here

52- Composition and structure of the bryophyte community of Park Savanna in Marajó Island, Pará, Brazil

PAULO W.P. GOMES, PRISCILA S. DE MEDEIROS-SARMENTO, RITA DE CÁSSIA P. DOS SANTOS & ANA CLÁUDIA C. TAVARES-MARTINS

This paper revealed that the composition, richness, and density of bryophytes in savannas may vary according to the surrounding vegetation. This study showed that the Amazonian seasonality does not influence the composition of species in savannas, since there was no significant difference between dry and rainy seasons, moreover, all species found are perennial.

 Read here

53- Functional traits of three major invasive grasses in a threatened tropical mountain grassland

GERALDO W. FERNANDES, LUCAS B.S. TAMEIRÃO, ADRIANA R. COSTA, DANIELE G. RIBEIRO, MICHELE N. NEVES, BETÂNIA G. SOUZA E BRITO & DANIEL NEGREIROS

The present work evaluated the ecological strategies and functional traits of exotic and invasive grasses that occur in two distinct rupestrian grasslands habitats, with ferruginous and quartzitic substrate. The functional traits of the three studied exotic grasses are typical of invasive species and favor their performance and establishment in this ecosystem. This work contributes to the understanding of the functional ecology of invasive species in these two important ecosystems that arbor an extremely high biodiversity but are severely threatened.

 Read here

54- Short-term temporal dynamics of morphological and feeder functional groups and species richness in relation to seasonal changes

MARÍA CECILIA GAUNA, CAROLINA FERNÁNDEZ, JUAN FRANCISCO ESCOBAR & ELISA ROSALÍA PARODI

Seaweeds as primary-space holders are major components of intertidal and subtidal communities in rocky systems. Because their sessile condition they are constrained to the effects of long-term exposure to environmental stress, resulting in changes in the structure of the assemblages. In an intertidal zone of the Atlantic Patagonian coast, the dominating interactions at the lower intertidal level and small-scale spatial variation jointly with abiotic factors promoted a better environment, preventing other species from extreme physical stress, thus leading to community development.  

 Read here

55- New species records of Gasteruptiidae (Hymenoptera, Evanioidea) from Eastern Uruguay

NELSON W. PERIOTO, ROGÉRIA I.R. LARA, ANTONIO C.C. MACEDO, NATALIA ARBULO, JUAN P. BURLA & ENRIQUE CASTIGLIONI

In this study, which aimed to assess the diversity of the Hymenoptera fauna from eastern Uruguay, we report new records of Gasteruptiidae for that country. Gasteruptiidae are parasitoid wasps, rarely collected, whose larvae develop as predator-inquilines in nests of solitary bees. In the samples, individuals of four species of Gasteruptiidae were captured: Gasteruption brasiliense (Blanchard), Gasteruption brachychaetun Schrottky; Gasteruption helenae Macedo and Gasteruption brandaoi Macedo; the last three species were reported for the first time to Uruguay.

 Read here

56- Influence of the chlorophyll-a gradient on the community structure of plankton microcrustaceans (Cladocera and Copepoda) in a Neotropical reservoir

VANESSA G. TIBÚRCIO, TATIANE MANTOVANO, JOÃO V.F. DA SILVA & CLAUDIA C. BONECKER

Fish farming in net tanks is an alternative to supplying food to the world population and zooplankton is a resource involved in this process. When comparing the composition of microcrustaceans in eutrophic and oligotrophic habitats under the influence of this practice, we find a significant difference being the eutrophic environment. the driver of the largest number of Species. When looking for what concentrations of chlorophyll-have thresholds that change The structure of the community, we find that only in eutrophic habitats have the frequency of occurrence and the relative abundance of some species changed,as well as the distribution of species. These responses can affect ecosystem processes related to trophic dynamics, such as secondary productivity and nutrient cycling.

 Read here

57- Population biology of Astyanax lacustris (Pisces, Characiformes) in a Neotropical reservoir and its tributaries

ANA P. VIDOTTO-MAGNONI, GREGÓRIO KURCHEVSKI, FELIPE P. DE LIMA, ANDRÉ B. NOBILE, DIEGO A.Z. GARCIA, ARMANDO C.R. CASIMIRO, ALAN D. PEREIRA & MÁRIO L. ORSI

This study aimed to compare biological aspects of the biology of Astyanax lacustris Lütken, 1875 from lotic and lentic habitats of an aging reservoir. We found that specimens collected from lotic habitats had a wider range of size classes, were linked to a high frequency of juveniles and had greater feeding activity. In contrast, fishes collected from lentic environments exhibited high rates of capture, increased frequency of adults and higher values of mean standard length. Astyanax lacustris can be considered a persistent species in Chavantes Reservoir after aging, encountering conditions to complete its life span and adjusting to food resources.

 Read here

58- The isolated rocky outcrops of northeastern Argentina and their role on the herpetofauna conservation

JOSÉ M. PIÑEIRO, RODRIGO CAJADE, ALEJANDRA B. HERNANDO, AZUL COURTIS, MARÍA R. INGARAMO & FEDERICO MARANGONI

Isolated rocky outcrops represent biodiversity centers, refuges for endangered species, and favorable scenarios for endemism. To highlight the value of rocky outcrops as ecosystems for biodiversity conservation, we describe the diversity of herptiles of three isolated rocky outcrops of northeastern Argentina and compare it with that of other natural areas of the region. With a total of 56 species, representing 35% of the herptiles recorded for Corrientes province. Our results show that, despite its small size, it represents an ecosystem with great diversity. Our study contributes to the knowledge of rocky outcrops and highlights their importance in biodiversity conservation.

 Read here

ANIMAL SCIENCE

59- Growth performance, carcass traits and meat quality of lambs fed increasing level of Macadamia nut cake

MICHAEL N.S. MARCONATO, TAMIRES P. SANCHES, CAMILA M.S. CHAVES, MAURO S. BUENO, JULIANO ISSAKOWICZ, MARCIA M.H. HAGUIWARA, CLÁUDIA CRISTINA P. DE PAZ, LETÍCIA L. DOS REIS, ADIBE LUIS ABDALLA & RICARDO L.D. DA COSTA

The main challenge for the coming years will be how to increase food production sustainably to meet demand. Animal protein will increasingly be composed of ruminants fed on fodder and by-products of agricultural production, due to competition for grains with human food. The production of lamb meat is mainly limited by the cost of inputs, especially to feed. It is promising to use alternative feed materials, aiming to minimize costs and maximize Production.  The use of material from Macadamia processing in sheep feed can help boost the nutritional value of lamb meat and benefit production by using a highly energetic residue.

 Read here

60- Weight/carapace length relationship and condition factor of the roughneck shrimp, Rimapenaeus constrictus (Stimpson, 1874), on the southeastern Brazilian coast

ALEXANDRE R. DA SILVA, ANA ELISA B. LOPES, RAPHAEL C. GRABOWSKI & ANTONIO L. CASTILHO

Due the strong fishery pressure and the use of non-selective trawling gear, several species with are no commercially target end up being captured. The roughneck shrimp Rimapenaeus constrictus is one of those. This study had the aim to elucidate the questions regarding weight gain and its relationship with animals' size which can provide subsidy for better future fishery management plans. 

 Read here

60- Range extensions of three marine shrimps (Caridea: Alpheidae, Palaemonidae) on the Brazilian coast

LUCIANE A.A. FERREIRA, CECILI B. MENDES & PAULO P.G. PACHELLE

Three caridean shrimps have their distribution range extended on the Brazilian coast. Alpheus carlae Anker, 2012, previously reported from Ceará to São Paulo, and Typton fapespae Almeida, Anker & Mantelatto, 2014, previously known only from Rio de Janeiro and São Paulo, are both now reported from Santa Catarina. Athanas nitescens (Leach, 1813), first reported from São Paulo based on a single male, is now confirmed to have established populations in Brazil with the finding of ovigerous females on the coast of Rio de Janeiro.

 Read here

62- Performance of broiler breeders supplemented with organic and inorganic minerals

DOUGLAS PEDRO, ALEXANDRE P. ROSA, ANGÉLICA LONDERO, JULIANA FORGIARINI, TATIANE BRANCO, HELENO M. DE FREITAS, CAMILA B.S. GIACOMINI & MÁRCIO PILECCO

The study evaluated the use of organic and inorganic minerals in broiler breeder diet (51 to 65 weeks of age) and its effects on performance. Four treatments and five replicates with 22 hens and 2 roosters were used, where: PI=100% mineral inorganic premix (MIP); PO=100% mineral organic premix (MOP): PI+PO=70% MIP + 30% MOP and PI+Zn=100% MIP, except zinc mineral, that was 70% inorganic form and 30% organic form. The parameters evaluated were: laying rate, body weight, egg, albumen and yolk weight and specific gravity. Organic minerals had no significant effect on the performance and egg quality from broiler breeders.

 Read here

ENGINEERING SCIENCES

63- Qualitative and quantitative evaluation of epoxy systems by Fourier transform infrared spectroscopy and the flexibilizing effect of mercaptans

DANIEL ANDERSON JANZEN, MILTON F. DINIZ, JOYCE B. AZEVEDO, JULIANO R.A. PINTO, NATÁLIA B. SANCHES & RITA DE CÁSSIA L. DUTRA

This manuscript reports a comparative study about the reaction of the epoxide rings of an epoxy resin by infrared spectroscopy in the medium infrared region and in the near infrared region. It also shows the flexibilizing effect by the addition of mercaptans to the epoxy system. The results have been considered relevant and the paper has been kindly selected to be published. 

 Read here

SOCIAL SCIENCES

64- Production and profitability of diversified agricultural systems

BRUNO VOLSI, GABRIEL EIJI HIGASHI, IVAN BORDIN & TIAGO S. TELLES

Planting the same crop year after year exhibit relative fragility in relation to pests, diseases, weeds, and nematodes, and face conservation challenges related to inadequate soil management. As a result, diversified crop rotation is an option for expanding producer incomes, and its adoption has presented a series of agronomic advantages compared to less diversified crop systems. Thus in this study, we show that adding more crops to the corn-soybean rotation is beneficial to farmers. This because diversifying crop rotations improves production and grow the profits.

 Read here

All abstracts of the publications were provided by the respective authors.

Annals of the Brazilian Academy of Sciences
aabc@abc.org.br