Data/hora: 06/06/2024 01:08:36

Provedor de dados: 	83	
País: 	Brazil	
Título: 	Genetic differentiation through dispersal and isolation in two freshwater fish species from coastal basins of Northeastern Brazil	
Autores: 	Abreu,João Marcelo S.; Waltz,Brandon T.; Albert,James S.; Piorski,Nivaldo M.	
Data: 	2020-01-01	
Ano: 	2020	
Palavras-chave: 	Characiformes; Headwater capture; Paleodrainages; Phylogeography; Sea-level change.	
Resumo: 	Abstract The coastal basins in Northeastern Brazil used in this study make up two different ecoregions for freshwater fishes (Amazonas estuary and coastal drainages, and Parnaiba) and two areas of endemism for Characiformes (Maranhão and Parnaíba), and exhibits a diversified yet poorly explored freshwater fish fauna. The population structure and biogeography of two migratory freshwater fish species that are commercially exploited from Maranhão and Parnaíba regions were herein analyzed. Molecular sequence data and statistical analyses were used to estimate haplotypes networks and lineage divergence times and correlated with hydrographic history of drainage and paleodrainages of the region. A total of 171 sequences was produced for both species, Schizodon dissimilis (coI, n = 70) and Prochilodus lacustris (D-loop, n = 101). All analyses identified the presence of three genetically delimited groups of S. dissimilis and six groups of P. lacustris. The lineage time analyses indicate diversification among these species within the past 1 million year. The results indicate the influence of geodispersal in the formation of the ichthyofauna in the studied area through headwater stream capture events and reticulated connections between the mouths of rivers along the coastal plain due to eustatic sea level fluctuations.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000300206	
Editor: 	Sociedade Brasileira de Ictiologia	
Relação: 	10.1590/1982-0224-2019-0114	
Formato: 	text/html	
Fonte: 	Neotropical Ichthyology  v.18 n.3 2020	
Fonte: 	info:eu-repo/semantics/openAccess