Two deep evolutionary lineages in the circumtropical glasseye Heteropriacanthus cruentatus (Teleostei, Priacanthidae) with admixture in the south-western Indian Ocean.
A phylogeographic study of the circumtropical glasseye Heteropriacanthus cruentatus was conducted. Molecular analyses indicate two mitochondrial cytochrome c oxidase subunit I (coI) lineages that are 10·4% divergent: one in the western Atlantic (Caribbean) and another that was detected across the Indo-Pacific. A fixed single nucleotide polymorphism (SNP) was detected at a nuclear locus (S7 ribosomal protein) and is consistent with this finding. There is evidence of recent dispersal from the Atlantic to the Indian Ocean with individuals of mixed lineages detected in South Africa and the Mozambique Channel. Using coalescent analyses of the mitochondrial dataset, time of divergence between lineages was estimated to be c. 15·3 million years. The deep divergence between these two lineages indicates distinct evolutionary units, however, due to the lack of morphological differences and evidence of hybridization between lineages, taxonomic revision is not suggested at this time.
California Academy of Sciences, 55 Music Concourse Drive, San Francisco, CA, 94118, U.S.A.|School of Biological and Biomedical Sciences, Durham University, South Road, Durham, DH1 3LE, U.K.
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Gaither
California Academy of Sciences, 55 Music Concourse Drive, San Francisco, CA, 94118, U.S.A.|University of Texas Marine Science Institute, 750 Channel View Drive, Port Aransas, TX, 78373, U.S.A.
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Bernal
California Academy of Sciences, 55 Music Concourse Drive, San Francisco, CA, 94118, U.S.A.|Molecular Invertebrate Systematics and Ecology Laboratory, Graduate School of Engineering and Science, University of the Ryukyus, Okinawa, 903-0213, Japan.
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Fernandez-Silva
South African Institute for Aquatic Biodiversity, Private Bag 1015, Grahamstown, 6140, South Africa.|National Zoological Gardens of South Africa, P. O. Box 754, Pretoria, 001, South Africa.
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Mwale
California Academy of Sciences, 55 Music Concourse Drive, San Francisco, CA, 94118, U.S.A.
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Jones
California Academy of Sciences, 55 Music Concourse Drive, San Francisco, CA, 94118, U.S.A.
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Rocha
California Academy of Sciences, 55 Music Concourse Drive, San Francisco, CA, 94118, U.S.A.
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Rocha
D063147:Animal Distribution; D000818:Animals; D001499:Bayes Theorem; D005075:Biological Evolution; D017691:Caribbean Region; D004272:DNA, Mitochondrial / Q000235:genetics; D019143:Evolution, Molecular; D005399:Fishes / Q000145:classification* / Q000235:genetics; D006239:Haplotypes; D019156:Indian Ocean; D016013:Likelihood Functions; D008957:Models, Genetic; D010140:Pacific Ocean; D010802:Phylogeny; D058974:Phylogeography; D020641:Polymorphism, Single Nucleotide; D017422:Sequence Analysis, DNA; D013019:South Africa
D004272:DNA, Mitochondrial
Caribbean; barcode; bigeyes; circumglobal; divergent lineages; reef fish