Are Hypomesus chishimaensis and H. nipponensis (Osmeridae) Distinct Species? A Molecular Assessment Using Comparative Sequence Data from Five Genes

Katriina L. Ilves; Eric B. Taylor

doi:10.1643/0045-8511(2007)7[180:AHCAHN]2.0.CO;2

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28 February 2007 Are Hypomesus chishimaensis and H. nipponensis (Osmeridae) Distinct Species? A Molecular Assessment Using Comparative Sequence Data from Five Genes

Katriina L. Ilves, Eric B. Taylor

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Copeia, 2007(1):180-185 (2007). https://doi.org/10.1643/0045-8511(2007)7[180:AHCAHN]2.0.CO;2

Abstract

We used mitochondrial (cytb, 16S) and nuclear (ITS2, S71, RAG1) sequence data to assess the degree of genetic differentiation between the recently described lacustrine Hypomesus chishimaensis from the Kuril Islands and its anadromous congener H. nipponensis from Hokkaido, Japan. The results showed that the two species are not genetically distinct at these loci. Phylogenetic trees depicted an unstructured clade consisting of individuals of both species and sequence data showed haplotypes that are shared between putative species for all markers. We conclude that H. chishimaensis is an alternative life-history type of H. nipponensis that should not be recognized at either the species or the sub-species level.

2007 by the American Society of Ichthyologists and Herpetologists

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Katriina L. Ilves and Eric B. Taylor "Are Hypomesus chishimaensis and H. nipponensis (Osmeridae) Distinct Species? A Molecular Assessment Using Comparative Sequence Data from Five Genes," Copeia 2007(1), 180-185, (28 February 2007). https://doi.org/10.1643/0045-8511(2007)7[180:AHCAHN]2.0.CO;2

Received: 6 April 2005; Accepted: 11 October 2006; Published: 28 February 2007

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