Redescription of<i>Atractus punctiventris</i>and Description of Two New<i>Atractus</i>(Serpentes: Dipsadidae) from Brazilian Amazonia

Passos, Paulo; Prudente, Ana Lúcia da Costa; Lynch, John D.

doi:10.1655/herpmonographs-d-14-00009

Cited by 23 publications

(19 citation statements)

References 44 publications

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“…Low sampling in Amazonia (Guedes et al 2018) might account for part of the low PE, but there are still a large number of species occurring across disjunct areas; thus resulting in large ranges when estimated by alpha hulls. Cryptic diversity might play a particular role in the weak endemism of Amazonia, and additional taxonomic reviews and phylogeographic studies may reveal additional species complexes in the region (Prudente and Passos 2010, Passos et al 2016 as well in as other parts of the Neotropics (Domingos et al 2017). Thus, our results set the ground for additional studies on hypotheses concerning the impact of cryptic diversity on PE patterns in the Neotropics.…”

Section: Variablesmentioning

confidence: 99%

Museums and cradles of diversity are geographically coincident for narrowly distributed Neotropical snakes

et al. 2019

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Factors driving the spatial configuration of centres of endemism have long been a topic of broad interest and debate. Due to different eco-evolutionary processes, these highly biodiverse areas may harbour different amounts of ancient and recently diverged organisms (paleo-and neo-endemism, respectively). Patterns of endemism still need to be measured at distinct phylogenetic levels for most clades and, consequently, little is known about the distribution, the age and the causes of such patterns. Here we tested for the presence of centres with high phylogenetic endemism (PE) in the highly diverse Neotropical snakes, testing the age of these patterns (paleo-or neoendemism), and the presence of PE centres with distinct phylogenetic composition. We then tested whether PE is predicted by topography, by climate (seasonality, stability, buffering and relictualness), or biome size. We found that most areas of high PE for Neotropical snakes present a combination of both ancient and recently diverged diversity, which is distributed mostly in the Caribbean region, Central America, the Andes, the Atlantic Forest and on scattered highlands in central Brazil. Turnover of lineages is higher across Central America, resulting in more phylogenetically distinct PE centres compared to South America, which presents a more phylogenetically uniform snake Research * equally contributed. 329fauna. Finally, we found that elevational range (topographic roughness) is the main predictor of PE, especially for paleoendemism, whereas low paleo-endemism levels coincide with areas of high climatic seasonality. Our study highlights the importance of mountain systems to both ancient and recent narrowly distributed diversity. Mountains are both museums and cradles of snake diversity in the Neotropics, which has important implications for conservation in this region.

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Section: Variablesmentioning

confidence: 99%

Museums and cradles of diversity are geographically coincident for narrowly distributed Neotropical snakes

et al. 2019

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“…Most of these new species have been described using a combination of meristic and morphometric characters (Passos et al 2009a, 2016, Passos and Lynch 2010, Schargel et al 2013, Salazar-Valenzuela et al 2014). However, with the exception of the preliminary phylogeny presented in De Oliveira and Hernández-Ruz (2016), no studies have involved a phylogenetic approach to test species arrangements and boundaries.…”

Section: Introductionmentioning

confidence: 99%

Molecular phylogeny of Atractus (Serpentes, Dipsadidae), with emphasis on Ecuadorian species and the description of three new taxa

Arteaga¹,

Mebert

Valencia

et al. 2017

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We present a molecular phylogeny of snake genus Atractus, with an improved taxon sampling that includes 30 of the 140 species currently recognized. The phylogenetic tree supports the existence of at least three new species in the Pacific lowlands and adjacent Andean slopes of the Ecuadorian Andes, which we describe here. A unique combination of molecular, meristic and color pattern characters support the validity of the new species. With the newly acquired data, we propose and define the Atractus iridescens species group, as well as redefine the Atractus roulei species group. The species Atractus iridescens is reported for the first time in Ecuador, whereas Atractus bocourti and Atractus medusa are removed from the herpetofauna of this country. We provide the first photographic vouchers of live specimens for Atractus multicinctus, Atractus paucidens and Atractus touzeti, along with photographs of 19 other Ecuadorian Atractus species. The current status of Atractus occidentalis and Atractus paucidens is maintained based on the discovery of new material referable to these species. With these changes, the species number reported in Ecuador increases to 27, a number that is likely to increase as material not examined in this work becomes available and included in systematic studies.

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“…Due to fossorial habit, becomes difficult to found with several specimens of the genus. [25] founding 16 specimens, but none had the variations recorded here. Works that link variations in morphological characters used to identify species of snakes, are important to better understand the phenotypic plasticity within a species.…”

Section: Methodsmentioning

confidence: 66%

“…The description of hemipenis was made using the terminology of [4] and [24]. Due we do not have access to specimen type da specie A. tartarus, we used the original descriptions of [25] to be compared with the specimensstudied here. Atractus tartarus is part of the group of species Atractus with 15 dorsal scales rows.…”

Section: Methodsmentioning

confidence: 99%

Morphological variation in Atractustartarus (Serpentes: Dipsadidae) from the Xingu River, east Amazon, Brazil and preliminary phylogenetic relationship in Atractus

Oliveira¹,

Ruz²

2016

International Journal of Research Studies in Biosciences

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Currently are recognized 138 species in the genus Atractus, distributed from the eastern region of the Isthmus of Panama to northern Argentina. In recent years, many species have been described based on external morphological differences and hemipenis. Here we described the variation in meristic character in the newly described specie Atractus tartarus from the eastern Brazilian Amazon from the Xingu region. Additionally we present a preliminary hypothesis of relationship with your relatives, based on marker 16SmtDNA.

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Redescription ofAtractus punctiventrisand Description of Two NewAtractus(Serpentes: Dipsadidae) from Brazilian Amazonia

Cited by 23 publications

References 44 publications

Museums and cradles of diversity are geographically coincident for narrowly distributed Neotropical snakes

Museums and cradles of diversity are geographically coincident for narrowly distributed Neotropical snakes

Molecular phylogeny of Atractus (Serpentes, Dipsadidae), with emphasis on Ecuadorian species and the description of three new taxa

Morphological variation in Atractustartarus (Serpentes: Dipsadidae) from the Xingu River, east Amazon, Brazil and preliminary phylogenetic relationship in Atractus

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