Dataset Information

Integrative species delimitation helps to find the hidden diversity of the leaf-litter frog Ischnocnema manezinho (Garcia, 1996) (Anura, Brachycephalidae), endemic to the southern Atlantic Forest.

ABSTRACT:

Background

The delimitation of cryptic species is a challenge for biodiversity conservation. Anurans show high cryptic diversity levels, and molecular species delimitation methods could help identify putative new species. Additionally, species delimitation approaches can provide important results for cryptic species conservation, with integrative methods adding robustness to results. Ischnocnema manezinho was described from Santa Catarina Island (SCI), southern Brazil. More recently, some inventories indicated continental populations supposedly similar in morphology to it. If these records are confirmed as I. manezinho, it would likely change its endangered status on National Red List, removing the species from conservation agendas. We investigated the threatened frog Ischnocnema manezinho, to evaluate if the continental populations belong to this species or if they form an undescribed species complex.

Methods

We used coalescent, distance, and allele-sharing-based species delimitation methods and integrative analyses of morphometric and bioacoustics traits to test evolutionary independence between I. manezinho from SCI, Arvoredo Island, and continental populations.

Results

Ischnocnema manezinho is restricted to Santa Catarina Island, while the five remaining lineages should be further investigated through a taxonomic review. Our results point to a small geographic range of Ischnocnema manezinho. Additionally, the species occurs in isolated fragments of forest in SCI surrounded by expanding urban areas, confirming its status as Endangered. Thus, the protection and monitoring of I. manezinho and the taxonomic description of the continental and Arvoredo Island candidate species should be priorities.

SUBMITTER: Oswald CB

PROVIDER: S-EPMC10225124 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature

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Publications

Integrative species delimitation helps to find the hidden diversity of the leaf-litter frog <i>Ischnocnema manezinho</i> (Garcia, 1996) (Anura, Brachycephalidae), endemic to the southern Atlantic Forest.

Oswald Caroline Batistim CB de Magalhães Rafael Félix RF Garcia Paulo C A PCA Santos Fabrício R FR Neckel-Oliveira Selvino S

PeerJ 20230525

<h4>Background</h4>The delimitation of cryptic species is a challenge for biodiversity conservation. Anurans show high cryptic diversity levels, and molecular species delimitation methods could help identify putative new species. Additionally, species delimitation approaches can provide important results for cryptic species conservation, with integrative methods adding robustness to results. <i>Ischnocnema manezinho</i> was described from Santa Catarina Island (SCI), southern Brazil. More recent ...[more]

PMID: 37250715

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