Navegando por Assunto "Anura"

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Artigo
Diversidade de Anuros (Amphibia) na Reserva Extrativista Lago do Cedro e seu entorno, Aruanã, Goiás.
(Biota Neotropica, 2013) Melo, Muryllo; Fava, Fernanda; Pinto, Hugo Bonfim Arruda; Bastos, Rogério Pereira; Nomura, Fausto
O Cerrado é uma savana tropical que abriga uma anurofauna muito diversa, sendo estimado de 209 espécies à 271 espécies conhecidas, das quais a metade (51%) são endêmicas. Neste trabalho, apresentamos o inventário da anurofauna da Reserva Extrativista Lago do Cedro (RELC), noroeste do estado de Goiás. Ao todo, registramos 36 espécies de anuros, distribuídas em cinco famílias, das quais cinco espécies são endêmicas do Cerrado. A alta riqueza de espécies encontrada pode ser explicada pela heterogeneidade de habitats, promovida pelas diferentes fitofisionomias dentro da unidade de conservação. A riqueza de espécies e a representatividade por família apresentam valores semelhantes aos encontrados em outras taxocenoses no Cerrado, com a anurofauna local formada por espécies generalistas e de ampla distribuição. As famílias com maior diversidade de espécies foram Hylidae e Leptodactylidae, padrão frequentemente encontrado nas assembleias neotropicais. A RELC é uma importante unidade de conservação do Cerrado, servindo de abrigo para populações de anuros, sendo representativa da diversidade de anfíbios no bioma, e apresentando localização estratégica devido a posição central com relação a áreas de preservação na bacia do Araguaia.
Artigo
Herpetofauna from a protected area situated in a biogeographic transition zone in Central South America
(Biota Neotropica, 2025) Tainá Figueras Dorado-Rodrigues; Rafael Martins Valadão; Luciana Mendes Valério; Carolina Potter de Castro; Christine Strüssmann
Several herpetofaunal inventories have been conducted in the Neotropical region. However, many areas remain to be investigated, and this is particularly true of transition zones between distinct ecoregions. Herein we describe the richness, species composition, and abundance of herpetofauna from a scarcely known portion of the Brazilian Cerrado and assess the taxonomic similarities of the assemblages among the sampled habitats and between neighbouring ecoregions. A mid-term herpetological inventory was conducted from May 2009 to January 2011 at Serra das Araras Ecological Station (SAES) using pitfall traps with drift fences in five distinct forested and open habitats. In these and in additional habitats, visual and acoustic searches and occasional encounters were also used to access the local composition of the herpetofauna, together with literature data and examination of specimens deposited in collections. We also compared the species composition at SAES on a regional scale with those of other 29 localities previously studied in nine South American ecoregions. We documented 123 species at the SAES (39 amphibians and 84 reptiles), 112 of which were recorded during the field inventory. Richness was highest in riparian forests and lowest in semi-deciduous dry forest and cerrado woodland. Riparian forests also presented the highest number of exclusive species, while only one exclusive species was found in cerrado woodland. Cerrado sensu stricto and cerrado parkland contained 53 and 40 species, including seven and 10 exclusive species, respectively, and showed greater similarity than the sampled forested habitats. In comparison to other localities in the Cerrado (including transition zones), SAES is home to one of the most diverse assemblages of herpetofauna. This may be attributed to continued sampling efforts and to the marked environmental heterogeneity resulting from the topographic profile and confluence of several ecoregions. Amphibian species composition at SAES is more similar to a nearby locality also studied in the Cerrado and to Chiquitano Dry Forest assemblages, while the reptile species composition is nested among the assemblages studied in the Cerrado. Our findings indicate that the herpetofauna of SAES is rich and representative of the regional biodiversity, with species composition evidencing its transitional character.
Artigo
New records and geographic distribution map of Elachistocleis magnus Toledo, 2010 (Anura: Microhylidae)
(Check List, 2012-05-01) Strüssmann, Christine; Campos, Vitor Azarias; Rodrigues, Tainá Figueras Dorado; Almeida, Carlos Henrique L. N.; Toledo, Luís Felipe; Hoogmoed, Marinus Steven; Valadão, Rafael Martins
New locality records and distribution map for the recently described Elachistocleis magnus are here presented. Originally described from Rondônia state, western Brazil (Amazonia), E. magnus was until now recorded for only two additional localities in the same state. The new records presented herein, which considerably enlarge the known range of the species, include three additional Brazilian states – Amazonas, Pará, and Mato Grosso (including records in the Brazilian Cerrado). We provide color description of the species in life, and discuss variation in habitats used by this species.
Artigo
The tadpole of Ameerega berohoka Vaz-Silva and Maciel, 2011 (Anura, Dendrobatidae)
(Zootaxa, 2024) SANTOS, DANUSY LOPES; VAZ-SILVA, WILIAN; MACIEL, NATAN MEDEIROS; DE OLIVEIRA, SEIXAS RESENDE; DE ANDRADE, SHEILA PEREIRA; BITTAR, BRUNO BARROS; NOMURA, FAUSTO
The genus Ameerega currently comprises 29 species that present exclusively a cis-Andean diversification (Grant et al. 2017; Frost 2024). Currently, nine species of the genus are distributed in Brazil in areas of Cerrado and Amazonia: Ameerega berohoka Vaz-Silva & Maciel, A. braccata (Steindachner), A. flavopicta (A. Lutz), A. hahneli (Boulenger), A. macero (Rodriguez & Myers), A. petersi (Silverstone), A. picta (Bibron), A. pulchripecta (Silverstone), and A. trivittata (Spix). Tadpoles of Ameerega species are poorly studied and until now only 13 from the 29 species in the genus have their tadpoles described: A. altamazonica (Twomey & Brown 2008), A. bilinguis (Duellman 1978, as Dendrobates parvulus; Poelman et al. 2010), A. braccata (Haddad & Martins 1994), A. flavopicta (Haddad & Martins 1994; Costa et al. 2006; Dias et al. 2018; Pezzuti et al. 2021; Santos et al. 2023), A. hahneli (Haddad & Martins 1994; Rodríguez & Duellman 1994; Duellman 2005; Menin et al. 2017), A. macero (Rodríguez & Myers 1993), A. parvula (Poelman et al. 2010), A. petersi (Silverstone 1976), A. picta (Lescure 1976; Silverstone 1976; Haddad & Martins 1994; Duellman 2005; Schulze et al. 2015), A. pulchripecta (Pezzuti et al. 2022), A. rubriventris (Lötters et al. 1997), A. silverstonei (Silverstone 1976; Myers & Daly 1979), and A. trivittata (Wyman 1859; Silverstone 1976; Rodríguez & Duellman 1994). Ameerega berohoka Vaz-Silva & Maciel was described based on specimens from central Brazil (type-locality: Arenópolis, Goiás State), is known to occur in western and southwestern regions in the State of Goiás, Mato Grosso and Mato Grosso do Sul (Frost 2024), and its tadpole remains unknown. Here, we describe the external morphology of the tadpole of A. berohoka and provide a comparison with other species in the genus