Herpetofauna of the Reserva Extrativista do Rio Gregório, Juruá Basin, southwest Amazonia, Brazil

Abstract

We present a checklist for reptiles and amphibians of the Reserva Extrativista do Rio Gregório, at the upper Juruá River basin, in the southwest Brazilian Amazonia. Using time-constrained searches, pitfall traps, vocalization, and accidental sightings, we recorded 84 species: 46 amphibians and 38 reptiles. Although analyses suggest still higher diversity, considering the short sampling time, relatively high species richness was documented, which reveals the relevance of this region for conservation. Species richness did not differ between upland and floodplain habitats. Species compositions were significant different between these habitat categories for amphibians and snakes, but not for lizards, suggesting some habitat preferences. Additionally, we found threatened and vulnerable species. We did not assess impacts of human activities on natural populations in RESEX do Rio Gregório, but since resident people have directly used natural resources (e.g. consuming turtles and modifying natural habitats), we recommend monitoring biodiversity to avoid negative impacts.

Scinax garbei (Miranda-Ribeiro, 1926) (Amphibia: Anura: Hylidae): Distribution extension for Brazilian Amazonia and first record in the state of Amapá

“…In Brazilian Amazonia, it has been recorded from Amazonas (Lima et al 2005;França and Venâncio 2010;Pantoja and Fraga 2012) and Pará states (Caldwell and Araujo 2005;Avila-Pires et al 2010;Barros et al 2010;Mendes-Pinto and Souza 2011;Pinheiro et al 2012). In this study, we present the first record of the species in the state of Amapá, extending the species distribution in the Brazilian Amazonia by ca.…”

Diversidade local e influência da sazonalidade sobre taxocenoses de anfíbios e répteis na Reserva Extrativista Chico Mendes, Acre, Brasil

“…Os répteis considerados abundantes neste estudo são representantes da subordem Sauria e mostraram-se associados a bordas de mata e clareiras na vegetação formadas por eventos naturais ou pelo corte seletivo da madeira. Todos possuem ampla distribuição e são frequentemente registrados em diversos ambientes primários e secundários da Amazônia (Vitt et al, 2008;Pantoja & Fraga, 2012;Bernarde et al, 2013;Prudente et al, 2013;Waldez et al, 2013;.…”

“…Para a porção sul-ocidental da Amazônia brasileira, estudos locais com a diversidade da herpetofauna (Bernarde & Abe, 2006;Bernarde, 2007;França & Venâncio, 2010;Bernarde et al, 2011;Pantoja & Fraga, 2012;Ramalho et al, 2016) têm revelado uma riqueza elevada em relação à porção oriental (Azevedo-Ramos & Galatti, 2002;AvilaPires et al, 2007;Avila-Pires et al, 2009). No entanto, assim como em demais localidades da Amazônia, poucos estudos avaliaram variações temporais na ocorrência e abundância das espécies (Bernarde & Abe, 2006;Menin et al, 2008;Bernarde & Kokubum, 2009).…”

Checklist of lizards of the Juruti, state of Pará, Brazil

“…The number of species recorded in the Juruti region (33 species) corresponds to 35% of all known lizards in the Brazilian Amazon, and 25% of lizards known throughout the Amazon region (Ávila-Pires et al 2007). This number is higher than the number of species recorded in other studies conducted in different herpetofaunistic regions of the Brazilian Amazon (Cunha et al 1985;Martins 1991;Ávila-Pires and Hoogmoed 1997;Bernardi et al 2002;Gardner et al 2007;Macedo et al 2008;Ávila-Pires et al 2009;Ilha and Dixo 2010;Silva et al 2011;Bernardo et al 2012;Pantoja and Fraga 2012) (Table 2). (Table 2).…”