NDLI: Genetic diversity and population structure of largehead hairtail, Trichiurus japonicus, based on mtDNA control region.

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Genetic diversity and population structure of largehead hairtail, Trichiurus japonicus, based on mtDNA control region.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Xiao, Yongshuang Ren, Guijing Song, Na Li, Jun Gao, Tianxiang
Spatial Coverage	China
Description	Country affiliation: China Author Affiliation: Xiao Y ( Institute of Evolution & Marine Biodiversity, Ocean University of China , Qingdao , China .)
Abstract	Largehead hairtail, Trichiurus japonicus, is a valuable commercially exploited demersal species. We gathered mtDNA control region sequences (3' mtDNA CR) of T. japonicus to investigate its genetic diversity and population genetic structure. Fifty-four specimens were collected from the nearshore localities along the coastline of China. A total of 42 polymorphic sites were found, which defined 40 haplotypes. A pattern with high level of haplotype diversity (h = 0.98 ± 0.01) and very low level of nucleotide diversity (π = 0.008 ± 0.005) were detected in the examined range. Comparing π with other fish species shows that T. japonicus has remarkable low genetic diversity values compared with other Pacific Ocean marine fishes. AMOVA and conventional Fst values revealed no significant genetic structure throughout the examined range, which is inconsistent with the previous findings based on the morphological and ecological studies. Using a variety of phylogenetic methods, coalescent reasoning, and molecular dating interpreted in conjunction with paleoclimateic and physiographic evidence, we infer that the genetic make-up of extant populations of T. japonicus was shaped by Pleistocene environmental impacts on the historical demography of this species. Coalescent analyses (Neutrality tests, Mismatch distribution analysis, Bayesian skyline analyses) showed that the species along the coastline of China has experienced population expansions originated in its most recent history at about 153-216 kyr.
File Format	HTM / HTML
ISSN	19401736
Issue Number	6
Volume Number	25
e-ISSN	19401744
Journal	Mitochondrial DNA
Language	English
Publisher	Taylor & Francis
Publisher Date	2014-12-01
Publisher Place	Great Britain (UK)
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Haplotypes Dna, Mitochondrial Genetics, Population Research Support, Non-u.s. Gov't Species Specificity Molecular Sequence Data Phylogeny Locus Control Region Sequence Analysis, Dna Journal Article Genetic Variation Discipline Cell Biology Animals Base Sequence China Bayes Theorem Perciformes Genetics Analysis Of Variance Models, Genetic Evolution, Molecular Cluster Analysis
Content Type	Text
Resource Type	Article
Subject	Genetics Molecular Biology

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