Artigo

Genetic structure and historical diversification of catfish Brachyplatystoma platynemum (Siluriformes: Pimelodidae) in the Amazon basin with implications for its conservation

Brachyplatystoma platynemum is a catfish species widely distributed in the Amazon basin. Despite being considered of little commercial interest, the decline in other fish populations has contributed to the increase in the catches of this species. The structure, population genetic variability, and ev...

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Autor principal: Ochoa, Luz Eneida
Outros Autores: Pereira, L. H.G., Costa-Silva, Guilherme José da, Roxo, Fábio Fernandes, Batista, Jacqueline da Silva, Formiga, Kyara M., Foresti, Fausto, Oliveira, Claudio
Grau: Artigo
Idioma: English
Publicado em: Ecology and Evolution 2020
Assuntos:
Brachyplatystoma
Mya
Pimelodidae
Pisces
Siluriformes
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/15426
id oai:repositorio:1-15426
recordtype dspace
spelling oai:repositorio:1-15426 Genetic structure and historical diversification of catfish Brachyplatystoma platynemum (Siluriformes: Pimelodidae) in the Amazon basin with implications for its conservation Ochoa, Luz Eneida Pereira, L. H.G. Costa-Silva, Guilherme José da Roxo, Fábio Fernandes Batista, Jacqueline da Silva Formiga, Kyara M. Foresti, Fausto Oliveira, Claudio Brachyplatystoma Mya Pimelodidae Pisces Siluriformes Brachyplatystoma platynemum is a catfish species widely distributed in the Amazon basin. Despite being considered of little commercial interest, the decline in other fish populations has contributed to the increase in the catches of this species. The structure, population genetic variability, and evolutionary process that have driven the diversification of this species are presently unknown. Considering that, in order to better understand the genetic structure of this species, we analyzed individuals from seven locations of the Amazon basin using eight molecular markers: control region and cytochrome b mtDNA sequences, and a set of six nuclear microsatellite loci. The results show high levels of haplotype diversity and point to the occurrence of two structured populations (Amazon River and the Madeira River) with high values for F<inf>ST</inf>. Divergence time estimates based on mtDNA indicated that these populations diverged about 1.0 Mya (0.2-2.5 Mya 95% HPD) using cytochrome b and 1.4 Mya (0.2-2.7 Mya 95% HPD) using control region. During that time, the influence of climate changes and hydrological events such as sea level oscillations and drainage isolation as a result of geological processes in the Pleistocene may have contributed to the current structure of B. platynemum populations, as well as of differences in water chemistry in Madeira River. The strong genetic structure and the time of genetic divergence estimated for the groups may indicate the existence of strong structure populations of B. platynemum in the Amazon basin. © 2015 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. 2020-05-08T20:43:50Z 2020-05-08T20:43:50Z 2015 Artigo https://repositorio.inpa.gov.br/handle/1/15426 10.1002/ece3.1486 en Volume 5, Número 10, Pags. 2005-2020 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Ecology and Evolution
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language English
topic Brachyplatystoma
Mya
Pimelodidae
Pisces
Siluriformes
spellingShingle Brachyplatystoma
Mya
Pimelodidae
Pisces
Siluriformes
Ochoa, Luz Eneida
Genetic structure and historical diversification of catfish Brachyplatystoma platynemum (Siluriformes: Pimelodidae) in the Amazon basin with implications for its conservation
topic_facet Brachyplatystoma
Mya
Pimelodidae
Pisces
Siluriformes
description Brachyplatystoma platynemum is a catfish species widely distributed in the Amazon basin. Despite being considered of little commercial interest, the decline in other fish populations has contributed to the increase in the catches of this species. The structure, population genetic variability, and evolutionary process that have driven the diversification of this species are presently unknown. Considering that, in order to better understand the genetic structure of this species, we analyzed individuals from seven locations of the Amazon basin using eight molecular markers: control region and cytochrome b mtDNA sequences, and a set of six nuclear microsatellite loci. The results show high levels of haplotype diversity and point to the occurrence of two structured populations (Amazon River and the Madeira River) with high values for F<inf>ST</inf>. Divergence time estimates based on mtDNA indicated that these populations diverged about 1.0 Mya (0.2-2.5 Mya 95% HPD) using cytochrome b and 1.4 Mya (0.2-2.7 Mya 95% HPD) using control region. During that time, the influence of climate changes and hydrological events such as sea level oscillations and drainage isolation as a result of geological processes in the Pleistocene may have contributed to the current structure of B. platynemum populations, as well as of differences in water chemistry in Madeira River. The strong genetic structure and the time of genetic divergence estimated for the groups may indicate the existence of strong structure populations of B. platynemum in the Amazon basin. © 2015 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.
format Artigo
author Ochoa, Luz Eneida
author2 Pereira, L. H.G.
Costa-Silva, Guilherme José da
Roxo, Fábio Fernandes
Batista, Jacqueline da Silva
Formiga, Kyara M.
Foresti, Fausto
Oliveira, Claudio
author2Str Pereira, L. H.G.
Costa-Silva, Guilherme José da
Roxo, Fábio Fernandes
Batista, Jacqueline da Silva
Formiga, Kyara M.
Foresti, Fausto
Oliveira, Claudio
title Genetic structure and historical diversification of catfish Brachyplatystoma platynemum (Siluriformes: Pimelodidae) in the Amazon basin with implications for its conservation
title_short Genetic structure and historical diversification of catfish Brachyplatystoma platynemum (Siluriformes: Pimelodidae) in the Amazon basin with implications for its conservation
title_full Genetic structure and historical diversification of catfish Brachyplatystoma platynemum (Siluriformes: Pimelodidae) in the Amazon basin with implications for its conservation
title_fullStr Genetic structure and historical diversification of catfish Brachyplatystoma platynemum (Siluriformes: Pimelodidae) in the Amazon basin with implications for its conservation
title_full_unstemmed Genetic structure and historical diversification of catfish Brachyplatystoma platynemum (Siluriformes: Pimelodidae) in the Amazon basin with implications for its conservation
title_sort genetic structure and historical diversification of catfish brachyplatystoma platynemum (siluriformes: pimelodidae) in the amazon basin with implications for its conservation
publisher Ecology and Evolution
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/15426
_version_ 1787144884565573632
score 11.674684

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