水生生物学报2011，Vol.35Issue(3)：449-459,11.DOI:10.3724/SP.J.1035.2011.00449
基于四个线粒体基因片段的银鱼科鱼类系统发育
PHYLOGENETTC RELATIONSHIPS OF NOODLE-FISHES(OSMERIFORMES:SALANGIDAE)BASED ON FOUR MITOCHONDRIAL GENES
摘要
Abstract
Noodle-fishes (Osmeriformes: Salangidae) are important commercial fishery species in China and other Asian countries.Although these species are common in fresh water, estuarine and coastal habitats in East Asia, the phylogenetic relationships of noodle-fishes are still unresolved and the taxonomy at the genus or species level has been disputed.To elucidate the genus-level phylogenetic relationships of salangid fishes, partial sequences of mitochondrial 12S/16S ribosome RNA and cytochrome c oxidase subunit Ⅰ (CO Ⅰ ) genes and complete sequences of NADH dehydrogenase subunit 1 gene were used in this present study.Phylogenetic relationships were constructed based on the combined data set of these 4 genes with 2464 bp after alignment, among which 788 sites were variable, and 723 sites were informative.Maximum Likelyhood and Bayesian methods were employed for phylogenetics analysis.Maximum Likelyhood and Bayesian analyses yielded same topology of trees.Results showed that the salangids was a monophyletic group.The genus Leucosoma occupied a basal position of the reconstructed Salangidae phylogeny.Two monophyletic subgroups, ‘Protosalanx + Neosalanx' and ‘Hemisalanx + Salanx' were also revealed.Within ‘Protosalanx+Neosalanx' subgroup, three primitive lineage were found: (1) Protosalanx chinensis and Neosalanx anderssoni; (2) ‘N.brevirostris-tangkahkeii-taihuensis-pseudotaihuensis complex'; (3) ‘N.jordani-oligodontis complex'.The inter-specific phylogenetic relationships within ‘N.brevirostris-tangkahkeii-taihuensis-pseudotaihuensis complex' and ‘N.jordani-oligodontis complex' couldn't be clarified on the phylogeny tree.Moreover, inter-specific genetic distances were 0-0.19％ for ‘N.brevirostris-tangkahkeii-taihuensis-pseudotaihuensis complex' and 0％ for ‘N.jordani-oligodontis complex' based on partial sequences of mitochondrial CO Ⅰ gene.Within ‘Hemisalanx + Salanx' subgroup, Hemisalanx brachyrostralis and Salanx cuvieri were sister groups, and these two species together formed the sister group of S.ariakensis.However, the systematic position of Salangichthys was still unresolved.Integrating findings in this study with morphological and molecular evidences from previously published studies, taxonomic status of noodle-fishes at the genus and species level were discussed detailedly.We concluded that Neosalanx anderssoni should be reclassified as Protosalanx anderssoni, belonging to the genus Protosalanx; Neosalanx tangkahkeii, N.taihuensis and N.pseuditaihuensis might be the synonyms ofN.brevirostris; Neosalanx oligodontis and N.reganius are probably the synonyms of N.jordani; Hemisalanx prognathus would be the synonyms of H.brachyrostralis; Hemisalanx is invalid, so Hemisalanx brachyrostralis should be put in the genus Salanx; Leucosoma is a valid genus located at the basal position of Salangidae.Further researches on the phylogenetic position of Salangichthys are still needed.关键词
银鱼/银鱼科/大银鱼/新银鱼/系统发育分类
生物科学引用本文复制引用
郭立,李隽,王忠锁,傅萃长..基于四个线粒体基因片段的银鱼科鱼类系统发育[J].水生生物学报,2011,35(3):449-459,11.基金项目
国家重点基础研究发展计划项目(2009CB421103) （2009CB421103）
国家自然科学基金(30970338) （30970338）
上海市教育委员会科研创新项目(09ZZ02)资助 （09ZZ02）
