Biota Neotropicahttps://www.scielo.br/feed/bn/2016.v16n3/2024-02-16T20:16:10.545000ZVol. 16 No. 3 - 2016WerkzeugPeriphytic algae in a floodplain lake and river under low water conditions10.1590/1676-0611-BN-2016-01592024-02-16T20:16:10.545000Z2020-08-09T06:48:14.233000ZBichoff, AndressaOsório, Nicolli CristinaDunck, BárbaraRodrigues, Liliana
<em>Bichoff, Andressa</em>;
<em>Osório, Nicolli Cristina</em>;
<em>Dunck, Bárbara</em>;
<em>Rodrigues, Liliana</em>;
<br/><br/>
Abstract Drought events will become more frequent due the climate change. In floodplains, periphytic algae are responsible for part of the primary production, are the principal source of organic carbon deposition, play an important role in mineralization and nutrient cycling, and are the base of the food web for many organisms. As algae distribution in aquatic environments is a strong indicator of physical and chemical conditions of the sites, we aimed to determine the structure of periphytic algae in lentic and lotic environments during drought conditions and to uncover the main local abiotic factors in community structuring. We hypothesized diatoms would be more frequent than green algae and desmids at both sites, due to their resistance characteristics, and that higher periphyton algal richness, density and diversity would occur in the lake due to the greater availability of nutrients and the absence of flow. The study was carried out in the Finado Raimundo lake and the Ivinhema river in the Upper Paraná river floodplain during the low water period of 2011. Petioles of the aquatic macrophyte Eichhornia azurea (Sw.) Kunth were used as a substrate for periphytic algae. We found a total of 171 species, 104 species in the lake and 80 in the river. Diatoms were predominant at both sites due to their strategic traits, and between sites, there were different patterns in the periphytic algal community structure, owing to the distinctive physical and chemical characteristics of the lake and the river. Achnanthidium minutissimum (Kützing) Czarnecki and Nitzschia palea (Kützing) W. Smith were the most abundant species in both environments. Our results showed patterns of periphytic algae in a floodplain during drought conditions, which will assist in understanding their structuring during future drought scenarios.The South-American rattlesnake <i>Crotalus durissus</i>: feeding ecology in the central region of Brazil10.1590/1676-0611-BN-2014-00272024-02-16T20:16:10.545000Z2020-08-09T06:48:14.233000ZHoyos, María AdelaidaAlmeida-Santos, Selma Maria
<em>Hoyos, María Adelaida</em>;
<em>Almeida-Santos, Selma Maria</em>;
<br/><br/>
Abstract We investigated food patterns in the diet composition of 452 specimens of Crotalus durissus from Central Brazil. Thirty-three items were recorded corresponding to four categories: rodents (75.76%), marsupials (6.06%), unidentified mammals (9.09%) and reptiles (9.09%). Adults of both sexes and some juveniles feed mostly on mammals, specifically rodents, it is the most active and abundant prey throughout the year mainly in areas from Cerrado. In addition, we observed that in C. durissus there is a trend in the diet of females could be more diverse, maybe this can be associated to sexual differences involving different strategies of the feeding biology of this rattlesnake.Ichthyofauna of streams from the lower Iguaçu River basin, Paraná State, Brazil10.1590/1676-0611-BN-2015-01172024-02-16T20:16:10.545000Z2020-08-09T06:48:14.233000ZLarentis, CrisleiDelariva, Rosilene LucianaGomes, Louise CristinaBaumgartner, DirceuRamos, Igor PaivaSereia, Diesse Aparecida de Oliveira
<em>Larentis, Crislei</em>;
<em>Delariva, Rosilene Luciana</em>;
<em>Gomes, Louise Cristina</em>;
<em>Baumgartner, Dirceu</em>;
<em>Ramos, Igor Paiva</em>;
<em>Sereia, Diesse Aparecida De Oliveira</em>;
<br/><br/>
Abstract The drainages of the Iguaçu River basin, as well as the main channel of the river, have peculiar characteristics resulting from geomorphological processes in this area, including the formation of the Iguaçu River Falls. This slope in the lower portion of the basin is a biogeographical barrier to many organisms. In this study was inventoried the fish fauna of streams of the lower Iguaçu River basin, evaluating possible differences in the species composition upstream and downstream of this biogeographical barrier. Sampling were conducted between 2004 and 2013, in five streams, three upstream and two downstream of the Iguaçu River Falls, using electrofishing. The nMDS analysis was run to investigate possible groupings of similar fauna between the streams sampled. The scores of this test were tested as to the significance of groupings with the Hotelling T2 test. The indicator value method (IndVal) was used to detect the distribution of species among the groups of the streams upstream and downstream of the Iguaçu River Falls. We collected 18,908 individuals of six orders, 11 families, and 40 species. Siluriformes and Characiformes had the highest species richness; Cyprinodontiformes presented the highest abundance. Considering the species recorded, 21 are considered natives to the Iguaçu River basin, including 15 endemic, wich were found only in streams upstream of the falls. Additional 18 species were verified only in the streams downstream of such barrier. Four species were common to both stretches. The axis 1 of the nMDS separated two groups: streams upstream (S1, S2 and S3) and streams downstream of the Iguaçu River Falls (S4 and S5). The indicator species analysis also indicated a distinction between the groups of streams, that were significantly different (Hotelling's T2 = 234.36, p ˂ 0.0001). The number of endemic species in the streams upstream of the Falls (15 spp.) evidences a significant effect of isolation promoted by the Iguaçu River Falls, and confirms the role of this barrier in the vicariant processes and endemism typical of this basin. These results emphasize the importance of conserving these ecosystems, once the extinction of species in this region means the irreversible loss of them.Structure and composition of fish assemblages from São Sebastião Channel tide pools, southwestern Atlantic10.1590/1676-0611-BN-2015-01282024-02-16T20:16:10.545000Z2020-08-09T06:48:14.233000ZPastro, GabrielaDias, Gustavo MunizGibran, Fernando Zaniolo
<em>Pastro, Gabriela</em>;
<em>Dias, Gustavo Muniz</em>;
<em>Gibran, Fernando Zaniolo</em>;
<br/><br/>
Abstract Organisms living in tide pools in the intertidal zone are exposed to daily and abrupt changes in temperature, dissolved oxygen, pH and salinity, during tidal cycles. Fish assemblages in tide pools are usually very different from those in surrounding areas; resident species exhibit morphological and ecological adaptations to deal with such a variable environment. In this study, we described the environmental conditions and the fish diversity and composition from four tide pools at the continental margin of the São Sebastião Channel, São Sebastião (23º41'-23º54'S; 45º19'-45º30'W), in southeastern Brazil. Monthly, from January to December 2011, we sampled four tide pools (12 samples per pool), applying a standard protocol to record environmental variables, and visual censuses to record abundance, richness and composition of fish assemblages. Environmental and fish data were compared among tide pools and periods throughout the year (warm and cold) using both univariate and multivariate analyses of variance. Tide pools showed significant environmental differences, mainly in area, volume and complexity of substrata. We observed 13 species of fishes (10 families), which belong to five trophic guilds (roving herbivores, territorial herbivores, mobile invertebrate feeders, omnivores and carnivores). Density and richness of fish were almost constant during the studied period, except for a reduction in fish density in São Francisco's Beach during a cold period. However, assemblages from the sampled tide pools differed from each other in composition and relative abundance of species, resulting in four distinct assemblage structures. Bathygobius soporator was the dominant species in most of the tide pools, corresponding to 66% of all recorded fish. The tide pool from Baleeiro's Point was intermediate in size, but was covered by a complex algae community and supported the most diverse fish assemblage, suggesting that habitat complexity may contribute to the diversity of fish.Biology and description of immature stages of <i>Gymnetis rufilateris</i> (Illiger, 1800) (Coleoptera: Cetoniidae: Cetoniinae)10.1590/1676-0611-BN-2014-01762024-02-16T20:16:10.545000Z2020-08-09T06:48:14.233000ZRodrigues, Sérgio RobertoGarcia, Felix PlacenciaFalco, Josani SilvaMorón, Miguel Angel
<em>Rodrigues, Sérgio Roberto</em>;
<em>Garcia, Felix Placencia</em>;
<em>Falco, Josani Silva</em>;
<em>Morón, Miguel Angel</em>;
<br/><br/>
Abstract Larvae, pupae and adults of Gymnetis rufilateris (Illiger, 1800) (Coleoptera: Cetoniidae: Cetoniinae) were collected in the municipality of Rochedo, Mato Grosso do Sul State. Studies on biology and morphology were conducted at the Laboratory of Entomology of the Universidade Estadual de Mato Grosso do Sul in Aquidauana, Mato Grosso do Sul, Brazil. Females of couples formed in the laboratory oviposited and allowed the biology studies. The eggs lasted for 15.5 days. Larvae of the 1st, 2nd and 3rd instars lasted 13.5, 30.6 and 113.1 days, respectively. The pupal period lasted 12.8 days. The egg-to-adult period lasts 186.8 days. The larvae fed on decomposing feces of poultry. In the laboratory, adults fed on ripe banana (Musa sp.) (Musaceae). Descriptions of the 3rd larval instar and pupa of G. rufilateris are presented. A key to known larvae of Gymnetis is also included.The composition and new records of micro- and mesophytoplankton near the Vitória-Trindade Seamount Chain10.1590/1676-0611-BN-2016-01642024-02-16T20:16:10.545000Z2020-08-09T06:48:14.233000ZLubiana, Karoline Magalhães FerreiraDias Júnior, Camilo
<em>Lubiana, Karoline Magalhães Ferreira</em>;
<em>Dias Júnior, Camilo</em>;
<br/><br/>
Abstract In spite of the length of the Brazilian coastline, studies of marine phytoplankton species in offshore areas have been largely neglected. Regarding phytoplankton species composition, the aim was to assess biodiversity status, species frequency, and the similarities at different sites along the Vitoria-Trindade Seamount Chain. Phytoplankton net samples were analyzed. One hundred and seventy five infrageneric taxa were identified. They represented four phyla, viz., Cyanobacteria, Bacillariophyta, Dinophyta, and Ochrophyta. Dinophyta was the most diverse, and its genus Tripos the largest contributor. This genus also represented more than half of the most common taxa in the sampled area. Thirty-five new infrageneric taxa were recorded, 12 of which are new reports for Brazil. Neritic stations assemblages were markedly different from those of seamounts and deep offshore. The high species diversity, especially among dinoflagellates can be considered typical of tropical oligotrophic waters. The new records demonstrate the gap in knowledge of phytoplankton biodiversity in Brazil.Influence of abiotic variables on the bat fauna of a granitic cave and its surroundings in the state of São Paulo, Brazil10.1590/1676-0611-BN-2015-00322024-02-16T20:16:10.545000Z2020-08-09T06:48:14.233000ZRocha, Alana DrielleBichuette, Maria Elina
<em>Rocha, Alana Drielle</em>;
<em>Bichuette, Maria Elina</em>;
<br/><br/>
Abstract In the present study we analyzed the bat assemblage of the granitic cave Gruta do Riacho Subterrâneo and its surroundings (Itu, São Paulo state, Brazil) aiming to verify the influence of seasonality on its species composition and population abundances. Five samplings were carried out with three days of duration each, along the period from October 2013 to September 2014. Captures of bats were performed by setting mist nets in cave entrances, its interior and surroundings, making a total capture effort of 6,090 m2.h. Our results indicate that this cave is shelter for a rich bat assemblage with fifteen species captured. Carollia perspicillata, Desmodus rotundus and Myotis sp. were the most abundant species. A comparison of the assemblage composition with that of other caves of São Paulo state revealed that its composition is very similar and typical of the Atlantic Forest Atlantic cave chiropterofauna independently of cave lithology. A multiple regression analysis performed to check for the existence of correlation between the seasonal fluctuation of the climatic variables temperature, pluviosity and air humidity did not reveal significant relationships among these and the changes in the abundance of bats. However, the analysis of canonical correspondence including these variables and also moonlight luminosity indicated a significant relationship of the changes in bat abundance with the air relative humidity. Changes in bat abundances are probably related to the seasonality in food availability. The accumulation curve obtained from the relationship between the accumulated richness of species and the number of samples showed that more samplings are required to reach the asymptote of species richness. Considering that Gruta do Riacho Subterrâneo is the largest granitic cave in Brazil and that it shelters a high number of bat species, including common and rare species, we suggests the preservation of this cave for maintenance of bat diversity in São Paulo state.Bat fauna of the Cerrado savanna of eastern Maranhão, Brazil, with new species occurrences10.1590/1676-0611-BN-2015-00892024-02-16T20:16:10.545000Z2020-08-09T06:48:14.233000ZOlímpio, Ana Priscila MedeirosVentura, Marcelo Cardoso da SilvaMascarenhas, Márcia de Jesus OliveiraNascimento, Daiane Chaves doAndrade, Fernanda Atanaena Gonçalves deFraga, Elmary da CostaBarros, Maria Claudene
<em>Olímpio, Ana Priscila Medeiros</em>;
<em>Ventura, Marcelo Cardoso Da Silva</em>;
<em>Mascarenhas, Márcia De Jesus Oliveira</em>;
<em>Nascimento, Daiane Chaves Do</em>;
<em>Andrade, Fernanda Atanaena Gonçalves De</em>;
<em>Fraga, Elmary Da Costa</em>;
<em>Barros, Maria Claudene</em>;
<br/><br/>
Abstract In Brazil, 179 bat species have been recorded to date, representing 68 genera and nine families. Few data are available on the bat fauna of the state of Maranhão, so the present study was based on a survey of the bat fauna of the Inhamum Municipal Environmental Protection Area (APA Inhamum) in the Cerrado savanna of the eastern extreme of the state. This inventory provides new records of bat species for the state of Maranhão and the Cerrado biome. A total of 31 species (four families) were collected, representing 39% of the bat species known to occur in Maranhão and 28.71% of the species described for the Cerrado. The family Phyllostomidae was the most diverse, with 23 species (74.20% of the total), and also the most abundant, with 86.09% of the specimens collected. The Molossidae (four species) was the second most diverse, followed by the Vespertilionidae (three species) and the Emballonuridae (one species). Carollia perspicillata was the most abundant species (28%).The records of Artibeus fimbriatus and Platyrrhinus fusciventris are the first for the Cerrado and were also recorded in Maranhão for the first time. The cumulative species curve did not reach an asymptote. The species Dermanura gnoma, Lasiurus blossevillii, Lasiurus ega, Micronycteris schmidtorum, Molossops temminckii, Platyrrhinus cf. recifinus, Phylloderma stenops and Trachops cirrhosus, were also recorded in Maranhão for the first time demonstrating the value of for mammal inventories and emphasizing the need for further surveys in this poorly-known region.New isolates of <i>Trichoderma</i> antagonistic to <i>Sclerotinia sclerotiorum</i>10.1590/1676-0611-BN-2016-02182024-02-16T20:16:10.545000Z2020-08-09T06:48:14.233000ZMarques, EderMartins, IreneCunha, Mariana de Oliveira CardosoLima, Marcello ArraisSilva, João Batista Tavares daSilva, Joseane Padilha daInglis, Peter WardMello, Sueli Correa Marques
<em>Marques, Eder</em>;
<em>Martins, Irene</em>;
<em>Cunha, Mariana De Oliveira Cardoso</em>;
<em>Lima, Marcello Arrais</em>;
<em>Silva, João Batista Tavares Da</em>;
<em>Silva, Joseane Padilha Da</em>;
<em>Inglis, Peter Ward</em>;
<em>Mello, Sueli Correa Marques</em>;
<br/><br/>
Abstract Forty-nine isolates of Trichoderma from the Brazilian Midwest were evaluated for their antagonistic activity in vitro against Sclerotinia sclerotiorum (causal agent of white mold), which were then identified based on their nuclear ribosomal ITS sequences. Paired culture tests showed that all isolates exhibited some antagonism, with a maximum of 77% mycelial inhibition and complete inhibition of sclerotia production. Two isolates were found to be the most promising biocontrol agents, considering both antagonistic parameters (CEN1253 - T. koningiopsis and CEN1265 - T. brevicompactum). Five different species were identified: T. harzianum (23), T. spirale (9), T. koningiopsis (8), T. brevicompactum (7) and T. asperellum (2). These isolates are stored in the Embrapa Fungi Collection for Biological Control and the information obtained in the experiments will be incorporated into the database of biological assets within the genetic resources information system (Allele) and be made available for further studies.The herpetofauna of Parque Nacional da Serra das Confusões, state of Piauí, Brazil, with a regional species list from an ecotonal area of Cerrado and Caatinga10.1590/1676-0611-BN-2015-01052024-02-16T20:16:10.545000Z2020-08-09T06:48:14.233000ZDal Vechio, FranciscoTeixeira Jr., MauroRecoder, Renato SousaRodrigues, Miguel TrefaultZaher, Hussam
<em>Dal Vechio, Francisco</em>;
<em>Teixeira Jr., Mauro</em>;
<em>Recoder, Renato Sousa</em>;
<em>Rodrigues, Miguel Trefault</em>;
<em>Zaher, Hussam</em>;
<br/><br/>
Abstract Different physiognomies at Parque Nacional da Serra das Confusões (PNSCo) were intensively sampled aiming to access the distribution pattern of its herpetofauna. Sixty six species were found in the park (47 reptiles and 19 amphibians); the rarefaction curve for lizards, although not fully stabilized in an asymptote, indicates that the sampling effort was enough to reveal most lizard species occurring in the area; and richness estimators recovered values close to observed. For amphibians, the curve shows a weak tendency to stabilization with richness estimators indicating that additional records could be done. Field work carried out at PNSCo has highlighted an unique herpetofauna: five new species were described and there are three candidates as new species. The regional list including Cerrados's units - Estação Ecológica Serra Geral do Tocantins (EESGT) and Estação Ecológica de Uruçuí-Una (EEUU) with Caatinga's ones - PNSCo and Parque Nacional da Serra da Capivara (PNSCa), shows a high herpetofaunal diversity (191 species) to the region. The cluster analysis recovered the Cerrados's units and Caatinga's ones, in separate clusters evidencing a species turnover between domains, despite its geographical proximity. Thus, although there is widespread fauna throughout region shared by the units, each reserve holds its own faunal identity, harboring a singular assemblage of species.Inventory of the fish fauna from Ivaí River basin, Paraná State, Brazil10.1590/1676-0611-BN-2015-01512024-02-16T20:16:10.545000Z2020-08-09T06:48:14.233000ZFrota, AugustoDeprá, Gabriel de CarvalhoPetenucci, Letícia MachadoGraça, Weferson Júnio da
<em>Frota, Augusto</em>;
<em>Deprá, Gabriel De Carvalho</em>;
<em>Petenucci, Letícia Machado</em>;
<em>Graça, Weferson Júnio Da</em>;
<br/><br/>
Abstract We compiled data on fish fauna of the Ivaí River basin from recent specialised literature, standardised sampling and records of species deposited in fish collections. There were 118 fish species of eight orders and 29 families. Of these, 100 species are autochthonous (84.8%), 13, allochthonous (11.0%) and five, exotic (4.2%). The main causes for the occurrence of non-native species are escapes from aquaculture, introduction for fishing purposes and the construction of the Itaipu hydroelectric plant. The predominance of small and medium-sized Characiformes and Siluriformes, including 13 species new to science, accounts for approximately 11.0% of all species and 13.0% of all native species. About 10.2% of all species and 12.0% of all native species are endemic to the upper stretch of the Ivaí River, isolated by numerous waterfalls in tributary rivers and streams. The Ivaí River basin is subjected to various anthropogenic interferences such as pollution, eutrophication, siltation, construction of dams, flood control, fisheries, species introduction and release of fingerlings. These activities raise concerns about biodiversity of Brazilian inland waters especially regarding the fish fauna; the basin of the Ivaí River already has species classified in categories of extinction risk: Brycon nattereri and Apareiodon vladii (Vulnerable) and Characidium heirmostigmata and Steindachneridion scriptum (Endangered). The high species richness of native fish, endemism of some, high environmental heterogeneity, high risk of extinction and lack of knowledge of several other species along with the eminent human activities raise the need to enrich the scientific knowledge for future conservation efforts for the studied basin.List of Odonates from the Floresta Nacional de São Francisco de Paula (FLONA - SFP), with two new distribution records for Rio Grande do Sul, Brazil10.1590/1676-0611-BN-2015-01322024-02-16T20:16:10.545000Z2020-08-09T06:48:14.233000ZRenner, SamuelPérico, EduardoSahlén, Göran
<em>Renner, Samuel</em>;
<em>Périco, Eduardo</em>;
<em>Sahlén, Göran</em>;
<br/><br/>
Abstract A survey of Odonata was carried out in the National Forest FLONA - SFP, Northeastern region of the Rio Grande do Sul state, Brazil. This conservation unit is mainly covered by Mixed Ombrophilous Forest (MOF), a subtype of Atlantic Forest biome, being also areas covered in planted Pinus, planted Araucaria and open fields. Our sampling efforts were conducted in thirty aquatic environments inside this reserve during the period between January 2014 and November 2014. The sampling sites were selected randomly, comprehending lakes, bogs, small streams and river sections, all inserted in the four vegetation types occurring in the reserve. Fortysix species of Odonata were collected and grouped into 23 genera and seven families. The dominant families were Coenagrionidae (32%), Libellulidae (32%), Aeshnidae (12%), and, Calopterygidae and Lestidae (9%). As expected, the findings revealed the presence of a highly diverse Odonate assemblage, mainly represented by generalist species in the most human disturbed sectors (Pinus and Open fields) and some specialist species in the pristine forest. Two species were registered for the first time in the state of Rio Grande do Sul, Brazil: Libellula herculea Karsch, 1889 (Libellulidae) and Heteragrion luizfelipei Machado, 2006 (Heteragrionidae).Headwater stream fish fauna from the Upper Paranapanema River basin10.1590/1676-0611-BN-2015-01452024-02-16T20:16:10.545000Z2020-08-09T06:48:14.233000ZCetra, MauricioMattox, George Mendes TaliaferroFerreira, Fabio CopGuinato, Rayssa BernardiSilva, Fernando VieiraPedrosa, Marina
<em>Cetra, Mauricio</em>;
<em>Mattox, George Mendes Taliaferro</em>;
<em>Ferreira, Fabio Cop</em>;
<em>Guinato, Rayssa Bernardi</em>;
<em>Silva, Fernando Vieira</em>;
<em>Pedrosa, Marina</em>;
<br/><br/>
Abstract The Paraná River basin has about 600 fish species. In the Upper Paraná, 310 fish species were recorded, with 52 species were registered in the streams and headwaters of the Paranapanema River. The aim of this study was to characterize the stream fish communities in the Upper Paranapanema River basin. Samplings were conducted with electrofishing during the dry season in the year of 2014. The collection effort consisted of 30 streams stretches. As a result, 41 species of stream fish were recorded in the Upper Paranapanema River basin, distributed in 26 genera, 11 families and 7 orders. Thirty-nine percent of the species can be considered rare, 41% intermediate and 20% common. We captured approximately eight species by stream stretch and the estimated richness (Schao2) was 40 ± 6 species. Around 40% of the individuals had less than 50 mm in length.Composition and diversity of anurans in the Restinga of the Conde municipality, northern coast of the state of Bahia, northeastern Brazil10.1590/1676-0611-BN-2016-01572024-02-16T20:16:10.545000Z2020-08-09T06:48:14.233000ZGondim-Silva, Felipe Augusto TrindadeAndrade, Alessandra Rodrigues SantosAbreu, Rafael OliveiraNascimento, Jamile SantosCorrêa, Geovane PaixãoMenezes, LucasTrevisan, Camila CostaCamargo, Soraia SilvaNapoli, Marcelo Felgueiras
<em>Gondim-Silva, Felipe Augusto Trindade</em>;
<em>Andrade, Alessandra Rodrigues Santos</em>;
<em>Abreu, Rafael Oliveira</em>;
<em>Nascimento, Jamile Santos</em>;
<em>Corrêa, Geovane Paixão</em>;
<em>Menezes, Lucas</em>;
<em>Trevisan, Camila Costa</em>;
<em>Camargo, Soraia Silva</em>;
<em>Napoli, Marcelo Felgueiras</em>;
<br/><br/>
Abstract The Conde municipality is located in the northern coast of the state of Bahia (NC), northeastern Brazil, and is part of the Atlantic Tropical domain. The anuran fauna of the northern portion of the NC is still poorly known if compared to the southern portion. The Restinga is one of the predominant environments of the coastal plains of the NC and it is characterized essentially by presenting sandy soil covered by herbaceous and shrubby vegetation. The objective of this study was to determine the anuran species composition and diversity for the Restinga of the Conde municipality. Sampling was carried out at night by active search over four periods of five consecutive days each, two over the 'main rainy season' and two in a 'lesser rainy season', using 14 sample units (SUs) and five extra sample plots (EPs). We calculated dominance and species diversity using the Berger-Parker and Shannon-Wiener H' indices, respectively. We used accumulation curves and the Jackknife 1 estimator to estimate anuran species richness, considering only the data obtained from the SUs. We recorded 713 anuran specimens distributed within 33 species, 13 genera and five families (Bufonidae, Craugastoridae, Hylidae, Leptodactylidae and Microhylidae). The Hylidae and Leptodactylidae families had the highest species richness. Considering only the SUs (Jackknife 1 estimator in brackets), we recorded 28 species in the study area (33.9 ± 2.3), 13 in Shrubby Vegetation Zones - SVZ (20.8 ± 2.9) and 25 in Freshwater Wetland Zones - FWZ (28.9 ± 1.9). The abundance and species diversity of the FWZ (n = 638 specimens; H'= 2.4) were higher than those recorded for the SVZ (n = 52 specimens; H' = 1.9). The SVZ and FWZ showed distinct dominant species, wherein Pristimantis paulodutrai was the dominant species in SVZ and Scinax fuscomarginatus in FWZ. The Restinga of the Conde municipality stands out as the one with the highest anuran species richness already recorded considering only SVZ and FWZ. Moreover, its anuran species composition represented 55% of the anuran species known for the NC and included taxa common to three different morphoclimatic domains (Tropical Atlantic, Cerrado and Caatinga).<i>Addisonia enodis</i> (Vetigastropoda: Lepetelloidea) associated with an elasmobranch egg capsule from the South Atlantic Ocean and the discovery of the species from deep waters off northeastern Brazil10.1590/1676-0611-BN-2016-02022024-02-16T20:16:10.545000Z2020-08-09T06:48:14.233000ZLima, Silvio Felipe BarbosaSimone, Luiz Ricardo LopesGuimarães, Carmen Regina Parisotto
<em>Lima, Silvio Felipe Barbosa</em>;
<em>Simone, Luiz Ricardo Lopes</em>;
<em>Guimarães, Carmen Regina Parisotto</em>;
<br/><br/>
Abstract A gastropod specimen of the subfamily Addisoniinae Dall, 1882 is reported here for the first time associated with an elasmobranch egg capsule from the South Atlantic Ocean. A specimen of Addisonia enodis Simone, 1996 was found living inside an egg capsule of Atlantoraja castelnaui (Miranda Ribeiro, 1907) (Arhynchobatidae Fowler, 1934) from shallow waters off southeastern Brazil. Previous studies have reported the association of members of the genus Addisonia Dall, 1882 only with the egg capsules of sharks from the family Scyliorhinidae Gill, 1862 and skates from the family Rajidae de Blainville, 1816. Other specimens of A. enodis are also here reported to occur off northeastern Brazil based on shells found in deep waters off the state of Sergipe, which fills a gap in its distribution in the Southwestern Atlantic to the north of this region. Addisonia enodis was recognized as a synonym of A. excentrica (Tiberi, 1855). However, we consider A. enodis as a valid species until further data clarify this issue based on a large sample of Addisonia from Brazilian waters.Length-weight relationships of the ichthyofauna from a coastal subtropical system: a tool for biomass estimates and ecosystem modelling10.1590/1676-0611-BN-2016-01922024-02-16T20:16:10.545000Z2020-08-09T06:48:14.233000ZVaz-dos-Santos, André MartinsGris, Bárbara
<em>Vaz-Dos-Santos, André Martins</em>;
<em>Gris, Bárbara</em>;
<br/><br/>
Abstract Aiming to analyse the growth pattern, to allow biomass estimates and consequently to subsidize the ecosystem modelling, the length-weight relationships (LWR) of 39 fish species from the Araçá Bay, a subtropical coastal area chosen as model for a holistic study comprising environmental, social and economic aspects have been estimated. The objective of this study was to provide LWR for the fishes from the area itself, accurately based on the life stages of fish populations present there. Particularly for Albula vulpes, Trachinotus carolinus, T. falcatus, Archosargus rhomboidalis and Kyphosus sectatrix these are the first records of LWR in Brazil.