Amphibians and squamates in Amazonian flooded habitats, with a study on the variation of amphibian assemblages along the Solimões River

Moraes, Leandro João Carneiro de Lima; Gordo, Marcelo; Pirani, Renata M.; Rainha, Raíssa N.; Almeida, Alexandre Pinheiro de; Oliveira, Alan F.S.; Oliveira, Maria Ermelinda; Silva, Ariane A.A.; Werneck, Fernanda P.

doi:10.1016/b978-0-12-822362-8.00032-3

Cited by 4 publications

(2 citation statements)

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“…2). As is common in Amazonia, such environmental heterogeneity created by the flooding gradient largely influences the faunistic spatial occupation and diversity patterns (Moraes et al, 2016(Moraes et al, , 2022aRamalho et al, 2018).…”

Section: Study Areamentioning

confidence: 99%

“…However, these localities of occurrence are in some cases patchily distributed, and the full range of this species is overall irresolute (Cisneros-Heredia, 2005). This is partially explained by the fact that the species mostly exploit seasonally flooded habitats, which are historically neglected in standardized inventories (Moraes et al, 2022a), and by misidentification with other Dendropsophus Fitzinger, 1843. In the light of available evidence, D. miyatai is widely distributed in the margins of the main western Amazonian rivers, extending through the east following the course of the Amazon River.…”

Section: Dendropsophus Miyatai (Vigle and Goberdhan-vigle 1990)mentioning

confidence: 99%

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Amphibians and reptiles from a protected area in western Brazilian Amazonia (Reserva Extrativista do Baixo Juruá)

et al. 2022

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Sampling gaps across the logistically challenging and extremely biodiverse Amazonia largely hamper our understanding of broad-scale amphibian and reptile diversity patterns in this ecosystem. The Juruá River basin, a southwestern tributary of the Amazon River, is one of these undersampled areas, with only punctual information documented for these vertebrates that are spatially or temporally biased. This is especially the case for the lower-middle courses of the Juruá River, which also has comparatively less protected areas than its upper course. In order to fill some biodiversity knowledge gaps associated with amphibians and reptiles in this river basin, we combined results of our field expeditions carried out in 1992, 2005-2007, and 2018 to the Reserva Extrativista (Extractive Reserve) do Baixo Juruá, a Brazilian protected area in the right bank of the lower Juruá River. Amphibians and reptiles were sampled using four complementary methods: active surveys, pitfall traps, funnel traps, and trammel nets. We identified species or updated their taxonomic status with a reanalysis of the external morphology of the preserved material in the light of novel taxonomic literature (more than 1,500 specimens) and employment of DNA barcoding analyses for some newly collected specimens with contentious taxonomic status. Our combined sampling evidenced 149 species of amphibians and reptiles occurring in this protected area (72 amphibians, 68 squamates, six chelonians, and three crocodilians). Recorded species highlight the value of the lower Juruá River region as harboring quite diverse assemblages for these vertebrates, with species typical of the western and southwestern Amazonia sub-regions. Remarkable species records are presented, as well as accounts on species with lower taxonomic resolution. Furthermore, we discuss the biogeographic affinities of recorded assemblages based on the species geographic range and preferred habitats, and the value of this protected area to preserve the regional biological diversity.

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Section: Study Areamentioning

confidence: 99%

Section: Dendropsophus Miyatai (Vigle and Goberdhan-vigle 1990)mentioning

confidence: 99%

Amphibians and reptiles from a protected area in western Brazilian Amazonia (Reserva Extrativista do Baixo Juruá)

et al. 2022

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Ecology and Conservation of Wetland Amphibians and Reptiles

Villamarı́n¹,

Moraes²,

Ferrara³

et al. 2022

Encyclopedia of Inland Waters

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A new snouted treefrog (Anura, Hylidae, Scinax) from fluvial islands of the Juruena River, southern Brazilian Amazonia

Ferrão,

Hanken,

Oda

et al. 2024

PLoS ONE

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Southern Amazonia is one of the less-explored regions by anuran taxonomists. We describe a small new species of snouted treefrog, genus Scinax, from this region, from a fluvial archipelago in the Juruena River, state of Mato Grosso, Brazil. The description is based on external morphology of adults and tadpoles, advertisement call and molecular data. The species is phylogenetically related to other snouted treefrogs of the Scinax cruentomma species group and shows the most southeastern distribution in Amazonia among its close relatives. It is distinguished from congeners mainly by its larger adult body size and bilobate vocal sac that reaches the level of the pectoral fold, a reddish-brown horizontal stripe on the iris, dark melanophores or blotches on the vocal sac and the throat of females, and the uniformly brown posterior portion of the thigh. The advertisement call comprises one pulsed note emitted at regular intervals, with a duration of 189–227 ms, 30–35 pulses/note and a dominant frequency of 2,250–2,344 Hz. The type locality is suffering several environmental impacts, including illegal mining, overfishing, unsustainable agriculture, uncontrolled logging and degradation associated with the construction of new hydroelectric dams. Further study of the biology and regional distribution of the new species is required to propose mitigation measures needed for its conservation.

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Amphibians and squamates in Amazonian flooded habitats, with a study on the variation of amphibian assemblages along the Solimões River

Cited by 4 publications

References 54 publications

Amphibians and reptiles from a protected area in western Brazilian Amazonia (Reserva Extrativista do Baixo Juruá)

Amphibians and reptiles from a protected area in western Brazilian Amazonia (Reserva Extrativista do Baixo Juruá)

Ecology and Conservation of Wetland Amphibians and Reptiles

A new snouted treefrog (Anura, Hylidae, Scinax) from fluvial islands of the Juruena River, southern Brazilian Amazonia

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