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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/25548

Title: Genetic variation in Trichiurus lepturus (Perciformes: Trichiuridae) in waters off Taiwan: several species or cohort contribution
Authors: Hsu Kui-Ching;Nien-Tsu Shih;I-H. Ni;Kwang-Tsao Shao
Contributors: NTOU:Department of Environmental Biology and Fisheries Science
國立臺灣海洋大學:環境生物與漁業科學學系
Keywords: cytochrome b;cutlassfish;population genetics;molecular evolution
Date: 2007
Issue Date: 2011-10-20T08:24:31Z
Publisher: The Raffles Bulletin of Zoology.
Abstract: abstract:The cutlassfish, Trichiurus lepturus, has a worldwide distribution and shows morphotypic variation among regions. We investigated genetic variation within and among populations of T. lepturus from Taiwanese waters. We surveyed 636 bp (base pairs) of mitochondrial DNA (mtDNA) cytochrome (cyt) b from 99 individuals collected at eight locations. Two different phylogenetic analysis software packages were utilized (MEGA version 2 and PHYLIP version 3.6a2), using neighbour-joining (NJ) and maximum likelihood (ML) methods. The resulting topologies were identical. Both methods suggest the same conclusion, revealing four deep lineages. The genetic divergences among these four lineages compared with Trichiurus species-level divergences were low. Hence, this study supports that the high genetic variations of T. lepturus, collected from different cohorts in waters off Taiwan, originated from distinct spawning events.
Relation: 14, pp.215-220
URI: http://ntour.ntou.edu.tw/handle/987654321/25548
Appears in Collections:[環境生物與漁業科學學系] 期刊論文

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