Molecular and morphological data reveal three new cryptic species of<i>Chiasmocleis</i>(Mehely 1904) (Anura, Microhylidae) endemic to the Atlantic Forest, Brazil

Forlani, Maurício C.; Tonini, João Filipe Riva; Cruz, Carlos Alberto Gonçalves; Zaher, Hussam; Sá, Rafael O. de

doi:10.7717/peerj.3005

Cited by 12 publications

(13 citation statements)

References 48 publications

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“…In summary, evidence of DNA sequence data and morphological variation in Atelognathus populations studied here are contrary to the consideration of a multispecies system under the phylogenetic species concept (Mayden, ; McKitrick & Zink, ; Nixon & Wheeler, ). Until now, the Patagonian frogs seem to exhibit high phenotypic variability and low genetic diversity (Correa et al., ; Díaz‐Páez et al., ; Martinazzo et al., ; this study), unlike the cryptic species diversity of anurans in tropical regions (e.g., Castroviejo‐Fisher, Köhler, De La Riva, & Padial, ; Forlani, Tonini, Cruz, Zaher, & de Sá, ). The topographic complexity and/or forest habitat heterogeneity are factors that may promote higher genetic divergences or deeper phylogeographic structure for anurans in tropical regions (Guarnizo & Cannatella, ; Rodríguez et al., ).…”

Section: Discussionmentioning

confidence: 64%

Low genetic divergence but many names in the endemic Patagonian frogs of the genusAtelognathus(Anura, Batrachylidae): A molecular genetic and morphological perspective

Barrasso

Basso

2018

J Zool Syst Evol Res

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The seven species of southern South American frogs belonging to the genus Atelognathus occur in a variety of environments, such as the extra‐Andean Patagonian steppe, temperate Nothofagus forests, and ecotonal zones between them in Argentina and Chile. Most species are known only from their type localities and sometimes also nearby surrounding areas. The temperate forests and the ecotones are inhabited by A. nitoi, A. ceii, and A. salai. The taxonomic status of these species is evaluated herein using morphological characters and DNA sequences of cytochrome b, control region, and recombination‐activating protein 1 gene. In addition, we reevaluate the diagnostic characters proposed in the original description of each species. Contrary to what expected, we found very low genetic divergence among taxa. Both DNA sequence data and morphological characters did not support the current taxonomy arrangement within Atelognathus. We suggest the recognition of only A. nitoi inhabiting the temperate forests, with A. ceii and A. salai being junior synonyms. This species putatively expanded in a northwards direction across Patagonia, undergoing a recent demographic expansion from southern populations.

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Section: Discussionmentioning

confidence: 64%

Low genetic divergence but many names in the endemic Patagonian frogs of the genusAtelognathus(Anura, Batrachylidae): A molecular genetic and morphological perspective

Barrasso

Basso

2018

J Zool Syst Evol Res

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“…Bacias Hidrográficas Sub-bacia Litoral SE Distribuição Endêmica do Brasil: Sim Chiasmocleis migueli é endêmica do Brasil, conhecido somente da localidade-tipo, no município de Santa Luzia do Itanhy, no estado de Sergipe (Forlani et al, 2017). Fragmentos da região ainda precisam ser amostrados para verificar a possível ocorrência da espécie em outras localidades.…”

Section: Biomas Mata Atlânticaunclassified

“…Espécie migratória? Não Chiasmocleis migueli ocorre em ambiente florestal da Mata Atlântica (Forlani et al, 2017). A espécie é semifossorial e provavelmente apresenta comportamento críptico, assim como as demais espécies do gênero (Haddad et al, 2013;Lourenço-de-Moraes, 2016).…”

Section: História Naturalunclassified

“…Embora a maioria das espécies de Chiasmocleis na Mata Atlântica sejam dependentes de remanescentes florestais bem preservados (Rossa-Feres et al, 2017), espécies nordestinas também podem ser encontradas em baixas densidades em remanescentes alterados (Caramaschi & Pimenta, 2003;Canedo et al, 2004;Mira-Mendes et al, 2018). A espécie foi descrita a partir de quatro espécimes coletados em 2001 (Forlani et al, 2017). Dados sobre abundância e tendência populacional são desconhecidos.…”

Section: História Naturalunclassified

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Ficha de Chiasmocleis migueli

Martins¹,

Guidorizzi²,

Andrade³

et al. 2023

Datasets - Sistema SALVE - ICMBio

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Chiasmocleis migueli é endêmica Brasil, da Mata Atlântica do estado de Sergipe, conhecida apenas da localidade-tipo, no município de Santa Luzia do Itanhy. A espécie ocorre em florestas, ambiente que encontra-se bastante reduzido e fragmentado na região, principalmente em decorrência de conversão de áreas naturais em áreas agrícolas. No entanto, a espécie foi descrita há pouco tempo (2017) e fragmentos da região ainda precisam ser amostrados para verificar sua possível em outras localidades. Não há informações suficientes sobre distribuição, população e impacto das ameaças que possibilitem uma avaliação adequada do seu risco de extinção. Por essas razões, Chiasmocleis migueli foi avaliada com Dados Insuficientes (DD).

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“…Historically, this forest has undergone several periods of connection and separation from these other major forest regions, leading to the isolation of some species over both short (e.g., 10,000-20,000 years ago) and long (e.g., >3 million years ago) time scales [41,42]. This dynamic evolutionary history has created a region rich with endemism and cryptic species complexes [43][44][45][46][47] that is threatened today by high levels of habitat loss and fragmentation [48]. For this reason, the Atlantic Forest is an area of upmost concern for biodiversity conservation [48,49].…”

Section: Introductionmentioning

confidence: 99%

Genetic, but Not Behavioral, Evidence Supports the Distinctiveness of the Mealy Amazon Parrot in the Brazilian Atlantic Forest

2021

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The presence of unidentified cryptic species within a species complex can obscure demographic trends of vulnerable species, impacting potential species conservation and management decisions. Previous work identified a taxonomic split between Central and South American populations of the mealy amazon (Amazona farinosa) that subsequently resulted in the elevation of these two populations to full species status (Amazona guatemalae and A. farinosa, respectively). In that study, however, a third, geographically disjunct population from the Brazilian Atlantic Forest was insufficiently sampled, limiting the ability of researchers to fully evaluate its genetic distinctiveness. Given that significant levels of biodiversity and endemism are found in this region, we aimed to use genetic and behavioral data to determine if the Atlantic Forest population of A. f. farinosa represents a third cryptic species within the complex. We sequenced 6 genes (4 mitochondrial and 2 nuclear introns) from the Atlantic Forest population of A. f. farinosa to measure the genetic relationships between this population and all other recognized species and subspecies of the mealy amazon. In addition, we use spectrographic cross-correlation and an analysis of 29 acoustic parameters to determine whether the taxa diverge in their learned contact call structure and if the degree of vocal differentiation correlates to genetic structure. We found that the Atlantic Forest population of A. f. farinosa was genetically distinct from that of the greater Amazon basin, but the degree of differentiation was less than that separating the Central and South American taxa. Acoustic analysis revealed substantial variation in contact call structure within each clade. This variation created substantial overlap in acoustic space between the clades. In all, the degree of call divergence between clades did not correspond to the degree of genetic divergence between the same clades. The results suggest that in taxa with substantial geographic variation in learned calls, such as the mealy amazon, vocalizations may not be a useful tool in the identification of cryptic species that are lifelong vocal learners. While these results do not support the elevation of the Brazilian Atlantic Forest population of the mealy amazon to full species status, given current trends of habitat loss in the Atlantic Forest as well as the imperiled status of large parrot species globally, we argue that this population nonetheless warrants special conservation and management consideration as a pool of unique genetic diversity within the southern mealy amazon species.

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Molecular and morphological data reveal three new cryptic species ofChiasmocleis(Mehely 1904) (Anura, Microhylidae) endemic to the Atlantic Forest, Brazil

Cited by 12 publications

References 48 publications

Low genetic divergence but many names in the endemic Patagonian frogs of the genusAtelognathus(Anura, Batrachylidae): A molecular genetic and morphological perspective

Low genetic divergence but many names in the endemic Patagonian frogs of the genusAtelognathus(Anura, Batrachylidae): A molecular genetic and morphological perspective

Ficha de Chiasmocleis migueli

Genetic, but Not Behavioral, Evidence Supports the Distinctiveness of the Mealy Amazon Parrot in the Brazilian Atlantic Forest

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