Genetic structure of pelagic and littoral cichlid fishes from Lake Victoria.

The approximately 700 species of cichlids found in Lake Victoria in East Africa are thought to have evolved over a short period of time, and they represent one of the largest known examples of adaptive radiation. To understand the processes that are driving this spectacular radiation, we must determ...

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Autores principales:	Miyuki Takeda, Junko Kusumi, Shinji Mizoiri, Mitsuto Aibara, Semvua Isa Mzighani, Tetsu Sato, Yohey Terai, Norihiro Okada, Hidenori Tachida
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1d95a66f79c842a8b8b86c5bf5546f88
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spelling	oai:doaj.org-article:1d95a66f79c842a8b8b86c5bf5546f882021-11-18T08:56:28ZGenetic structure of pelagic and littoral cichlid fishes from Lake Victoria.1932-620310.1371/journal.pone.0074088https://doaj.org/article/1d95a66f79c842a8b8b86c5bf5546f882013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24040175/?tool=EBIhttps://doaj.org/toc/1932-6203The approximately 700 species of cichlids found in Lake Victoria in East Africa are thought to have evolved over a short period of time, and they represent one of the largest known examples of adaptive radiation. To understand the processes that are driving this spectacular radiation, we must determine the present genetic structure of these species and elucidate how this structure relates to the ecological conditions that caused their adaptation. We analyzed the genetic structure of two pelagic and seven littoral species sampled from the southeast area of Lake Victoria using sequences from the mtDNA control region and 12 microsatellite loci as markers. Using a Bayesian model-based clustering method to analyze the microsatellite data, we separated these nine species into four groups: one group composed of pelagic species and another three groups composed mainly of rocky-shore species. Furthermore, we found significant levels of genetic variation between species within each group at both marker loci using analysis of molecular variance (AMOVA), although the nine species often shared mtDNA haplotypes. We also found significant levels of genetic variation between populations within species. These results suggest that initial groupings, some of which appear to have been related to habitat differences, as well as divergence between species within groups took place among the cichlid species of Lake Victoria.Miyuki TakedaJunko KusumiShinji MizoiriMitsuto AibaraSemvua Isa MzighaniTetsu SatoYohey TeraiNorihiro OkadaHidenori TachidaPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 9, p e74088 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Miyuki Takeda Junko Kusumi Shinji Mizoiri Mitsuto Aibara Semvua Isa Mzighani Tetsu Sato Yohey Terai Norihiro Okada Hidenori Tachida Genetic structure of pelagic and littoral cichlid fishes from Lake Victoria.
description	The approximately 700 species of cichlids found in Lake Victoria in East Africa are thought to have evolved over a short period of time, and they represent one of the largest known examples of adaptive radiation. To understand the processes that are driving this spectacular radiation, we must determine the present genetic structure of these species and elucidate how this structure relates to the ecological conditions that caused their adaptation. We analyzed the genetic structure of two pelagic and seven littoral species sampled from the southeast area of Lake Victoria using sequences from the mtDNA control region and 12 microsatellite loci as markers. Using a Bayesian model-based clustering method to analyze the microsatellite data, we separated these nine species into four groups: one group composed of pelagic species and another three groups composed mainly of rocky-shore species. Furthermore, we found significant levels of genetic variation between species within each group at both marker loci using analysis of molecular variance (AMOVA), although the nine species often shared mtDNA haplotypes. We also found significant levels of genetic variation between populations within species. These results suggest that initial groupings, some of which appear to have been related to habitat differences, as well as divergence between species within groups took place among the cichlid species of Lake Victoria.
format	article
author	Miyuki Takeda Junko Kusumi Shinji Mizoiri Mitsuto Aibara Semvua Isa Mzighani Tetsu Sato Yohey Terai Norihiro Okada Hidenori Tachida
author_facet	Miyuki Takeda Junko Kusumi Shinji Mizoiri Mitsuto Aibara Semvua Isa Mzighani Tetsu Sato Yohey Terai Norihiro Okada Hidenori Tachida
author_sort	Miyuki Takeda
title	Genetic structure of pelagic and littoral cichlid fishes from Lake Victoria.
title_short	Genetic structure of pelagic and littoral cichlid fishes from Lake Victoria.
title_full	Genetic structure of pelagic and littoral cichlid fishes from Lake Victoria.
title_fullStr	Genetic structure of pelagic and littoral cichlid fishes from Lake Victoria.
title_full_unstemmed	Genetic structure of pelagic and littoral cichlid fishes from Lake Victoria.
title_sort	genetic structure of pelagic and littoral cichlid fishes from lake victoria.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/1d95a66f79c842a8b8b86c5bf5546f88
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Genetic structure of pelagic and littoral cichlid fishes from Lake Victoria.

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