Data/hora: 11/06/2024 14:34:57

Provedor de dados: | Genetics and Molecular Biology
País: | Brazil
Título: | Genetic diversity of Morato's Digger Toad, Proceratophrys moratoi: spatial structure, gene flow, effective size and the need for differential management strategies of populations
Autores: | Arruda,Mauricio P.; Costa,William P.; Recco-Pimentel,Shirlei M.
Data: | 2017-06-01
Ano: | 2017
Palavras-chave: | Proceratophrys moratoi; Microsatellite; Population structure; Management unit; Conservation.
Resumo: | Abstract The Morato's Digger Toad, Proceratophrys moratoi, is a critically endangered toad species with a marked population decline in southern Brazilian Cerrado. Despite this, new populations are being discovered, primarily in the northern part of the distribution range, which raises a number of questions with regard to the conservation status of the species. The present study analyzed the genetic diversity of the species based on microsatellite markers. Our findings permitted the identification of two distinct management units. We found profound genetic structuring between the southern populations, on the left margin of the Tietê River, and all other populations. A marked reduction was observed in the contemporary gene flow among the central populations that are most affected by anthropogenic impacts, such as extensive sugar cane plantations, which presumably decreases habitat connectivity. The results indicated reduced diversity in the southern populations which, combined with a smaller effective population size, may make these populations more susceptible to extinction. We recommend the reclassification of P. moratoi as vulnerable and the establishment of a special protection program for the southern populations. Our results provide important insights about the local extinction of southern populations of this toad.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572017000300502
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/1678-4685-gmb-2016-0025
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.40 n.2 2017
Fonte: | info:eu-repo/semantics/openAccess