Assessment of three mitochondrial loci variability for the crown-of-thorns starfish: A first insight into Acanthaster phylogeography | Zendy

Karin Gérard | Zendy; Charlotte Roby | Zendy; Nicolas Chevalier | Zendy; B. A. Thomassin | Zendy; Anne Chenuil | Zendy; JeanPierre Féral | Zendy

Open Access

Assessment of three mitochondrial loci variability for the crown-of-thorns starfish: A first insight into Acanthaster phylogeography

Author(s) -

Karin Gérard,

Charlotte Roby,

Nicolas Chevalier,

B. A. Thomassin,

Anne Chenuil,

JeanPierre Féral

Publication year - 2007

Publication title -

comptes rendus biologies

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.529

H-Index - 84

eISSN - 1768-3238

pISSN - 1631-0691

DOI - 10.1016/j.crvi.2007.11.005

Subject(s) - acanthaster , biology , zoology , clade , phylogeography , genetic diversity , monophyly , genetic divergence , systematics , evolutionary biology , population , reef , ecology , phylogenetics , genetics , taxonomy (biology) , gene , great barrier reef , demography , sociology

Acanthaster planci (L.) is one of the major threats to coral reefs, whose genetic diversity has been mainly studied with allozymes. Allozymes revealed the low genetic differentiation between A. planci populations in the Indo-Pacific area. We obtained sequences of A. planci from Kenya, Mayotte and Madagascar at the three loci cytochrome oxydase subunit I (COI), 16S rDNA (16S) and five tRNAs, analysed together with available sequences of Acanthaster from the Pacific Ocean. The level of genetic diversity varied among the three loci, tRNAs being on average three times less divergent than COI and 16S genes. The genus Acanthaster appeared monophyletic, the two species A. brevispinus (Fisher) and A. planci forming distinct clades in agreement with data from morphology and systematics. The A. planci clade split into a West Indian Ocean group and a Pacific group, in agreement with allozyme data on population differentiation.

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