Demographic histories of two deep-sea eelpouts, Lycodes japonicus and Lycodes ocellatus: paleoenvironmental implications of the western North Pacific deep waters

We compared the population histories of two deep-sea eelpouts, Lycodes japonicus and Lycodes ocellatus , to elucidate the impacts of the last glacial period on deep-sea species in the western North Pacific area. The results of phylogenetic analyses based on the nucleotide sequences of the mitochondr...

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Bibliographic Details
Published in:Ichthyological research 2015-04, Vol.62 (3), p.363-367
Main Authors: Sakuma, Kay, Ueda, Yuji, Ito, Masaki, Kojima, Shigeaki
Format: Article
Language:English
Subjects:
Animal populations
Animal Systematics/Taxonomy/Biogeography
Biomedical and Life Sciences
Cytochrome
Deep sea
Demographics
Ecology
Environment
Fish
Freshwater & Marine Ecology
Life Sciences
Lycodes
Oceans
Paleoecology
Population growth
Population number
Short Report
Zoology
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Summary:We compared the population histories of two deep-sea eelpouts, Lycodes japonicus and Lycodes ocellatus , to elucidate the impacts of the last glacial period on deep-sea species in the western North Pacific area. The results of phylogenetic analyses based on the nucleotide sequences of the mitochondrial cytochrome c oxidase subunit I and cytochrome b genes revealed that the two species are closely related to each other. The results of mismatch distribution analyses, Bayesian skyline plots, and a Bayes factor test supported a constant population size of L. ocellatus in the western North Pacific during the last glacial period, but suggested a post-glacial population expansion of L. japonicus .
ISSN:1341-8998
1616-3915
DOI:10.1007/s10228-014-0441-8