Genetic Structure of Pelagic and Littoral Cichlid Fishes from Lake Victoria

Miyuki Takeda, Junko Kusumi, Shinji Mizoiri, Mitsuto Aibara, Semvua Isa Mzighani, Tetsu Sato, Yohey Terai, Norihiro Okada, Hidenori Tachida

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article numbere74088
JournalPloS one
Volume8
Issue number9
DOIs
Publication statusPublished - Sep 6 2013

Fingerprint

Cichlids
Lake Victoria
Victoria
Genetic Structures
Lakes
Fish
Mitochondrial DNA
Microsatellite Repeats
mitochondrial DNA
fish
microsatellite repeats
Radiation
Eastern Africa
genetic variation
loci
adaptive radiation
Haplotypes
Ecosystem
Cluster Analysis
Analysis of Variance

All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)
  • General

Cite this

Takeda, M., Kusumi, J., Mizoiri, S., Aibara, M., Mzighani, S. I., Sato, T., ... Tachida, H. (2013). Genetic Structure of Pelagic and Littoral Cichlid Fishes from Lake Victoria. PloS one, 8(9), [e74088]. https://doi.org/10.1371/journal.pone.0074088

Genetic Structure of Pelagic and Littoral Cichlid Fishes from Lake Victoria. / Takeda, Miyuki; Kusumi, Junko; Mizoiri, Shinji; Aibara, Mitsuto; Mzighani, Semvua Isa; Sato, Tetsu; Terai, Yohey; Okada, Norihiro; Tachida, Hidenori.

In: PloS one, Vol. 8, No. 9, e74088, 06.09.2013.

Research output: Contribution to journalArticle

Takeda, M, Kusumi, J, Mizoiri, S, Aibara, M, Mzighani, SI, Sato, T, Terai, Y, Okada, N & Tachida, H 2013, 'Genetic Structure of Pelagic and Littoral Cichlid Fishes from Lake Victoria', PloS one, vol. 8, no. 9, e74088. https://doi.org/10.1371/journal.pone.0074088
Takeda, Miyuki ; Kusumi, Junko ; Mizoiri, Shinji ; Aibara, Mitsuto ; Mzighani, Semvua Isa ; Sato, Tetsu ; Terai, Yohey ; Okada, Norihiro ; Tachida, Hidenori. / Genetic Structure of Pelagic and Littoral Cichlid Fishes from Lake Victoria. In: PloS one. 2013 ; Vol. 8, No. 9.
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