RAN
URI permanente desta comunidadehttps://bdc.icmbio.gov.br/handle/cecav/1401
Centro Nacional de Pesquisa e Conservação de Répteis e Anfíbios
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3 resultados
Resultados da Pesquisa
Item New records of Mesoclemmys raniceps (Testudines, Chelidae) for the states of Amazonas, Pará and Rondônia, North Brazil, including the Tocantins basin.(Herpetology Notes, 2019-02-18) Brito, Elizângela Silva; Valadão, Rafael Martins; Cunha, Fábio Andrew Gomes; Araújo, Cristiane Gomes de; Viana, Patrik Ferreira; Fernandes, Izaias MédiceOf the 58 species of living Chelidae (Rhodin et al.,2017), 20 are known from Brazil (Costa and Bérnils,2018). Of these, nine occur in the Amazon basin,including species of the genera Chelus, Mesoclemmys,Platemys, Phrynops and Rhinemys (Ferrara et al., 2017).The genus Mesoclemmys is the most diverse in Brazil, and five of the eight species of Mesoclemmys in Brazil occur within the Amazon basin (Souza, 2005; Ferrara et al., 2017). Species of genus Mesoclemmys are rare and inconspicuous when compared to other freshwater turtles, and live in hard-to-reach places, to extent that populations are rarely studied. This genus represents the least studied among Amazonian turtles (Vogt, 2008; Ferrara et al., 2017).Item Extensive sampling and citizen science expand the distribution of the threatened freshwater turtle Ranacephala hogei (Mertens, 1967)(An Acad Bras Cienc, 2024) Assis, Clodoaldo L.; Valadão, Rafael M.; Mendonça, Sônia Helena S.T. De; Peçanha, Evódio Luis S.; Costa, Henrique C.; Novaes, Camila M.; Barros, Thiago F. De; Rodrigues, Laio S.; Gasparini, João Luiz; Feio, Renato N.Ranacephala hogei is a South American freshwater turtle considered one of the 25 most endangered chelonian species in the world. Endemic to the Atlantic Forest hotspot of southeastern Brazil, the conservation status of R. hogei is subject to continuous assessment at various levels. However, the scarcity of data regarding this species, particularly its geographic range, challenges these evaluations. In an effort to address these gaps, we conducted a comprehensive long-term inventory using different methods to study this species. Our efforts resulted in a 144% increase in documented occurrence points, including a new hydrographic basin and protected areas. By combining historical and current records, we have observed the persistence of R. hogei in rural areas, even in locations where its extinction was previously predicted. Consequently, our data significantly contribute to supporting future conservation assessments.Item Distribuition of Chelus fimbriata and Chelus orinocensis (Testudines: Chelidae)(Chelonian Conservation and Biology, 2021-06) CUNHA, FÁBIO A.G.; FAGUNDES, CAMILA K.; BRITO, ELIZÂNGELA S.; VOGT, RICHARD C.; MAFFEI, FÁBIO; PEZZUTI, JUAREZ; FELIX-SILVA6, DANIELY; ROJAS-RUNJAIC, FERNANDO J.M.; LASSO, CARLOS A.; MORALES-BETANCOURT, MONICA A.; CARVALHO, VINICIUS TADEU DE; AMARAL, JOÃO VALSECCHI DO; BALESTRA, RAFAEL A.M.; ACÁCIO, MARIEL; MALVASIO, ADRIANA; LUSTOSA, ANA PAULA G.The matamatas (Chelus fimbriata and the recently described Chelus orinocensis) are the largest species in the family Chelidae, easily identified by their distinct morphological characteristics. The matamatas have a wide distribution in South America, occurring in Bolivia, Brazil, Colombia, Ecuador, Guyana, French Guiana, Peru, and Venezuela, as well as Trinidad and Tobago. However, there are many gaps in the knowledge of its distribution. The objective of this study was to present new records of occurrence for the C. fimbriata species complex and describe the area of distribution. We compiled data from published papers, databases in museums and other scientific collections, and research institutes and conservation organizations. From these data we mapped the species distribution, considering 3 types of river drainages based on water color in the Amazon Basin. We added 182 new records in Brazil, Venezuela, Colombia, Bolivia, and Peru, demonstrating that the C. fimbriata species complex has a wide distribution, totaling 6,907,551 km2 across all 3 river types. Most records were concentrated in areas lower than 200 m above sea level.