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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/53582

Title: 馬丁紅蝦種群之分子遺傳分類研究
Molecular taxonomy on the deep-sea shrimp species of the “Plesionika martia” species group (Crustacea: Decapoda: Caridea)
Authors: Chia-Yu Hsu
Contributors: NTOU:Institute of Marine Biology
Keywords: 紅蝦屬;";Plesionika martia";group;STACEY;分子遺傳分類
Plesionika;";Plesionika martia";group;STACEY;Molecular taxonomy
Date: 2019
Issue Date: 2020-07-03T08:34:10Z
Abstract: Plesionika martia
Members of the “Plesionika martia” species group are deep-sea shrimps and can be found world-wide. In some areas they are rather abundant and of commercial importance. Four species are currently recognized in this species groups, namely P. martia (A. Milne-Edwards, 1881), P. semilaevis Bate, 1888, P. orientalis Chace, 1985 and P. parvimartia Chace, 1985. However, there are still many controversies in the taxonomy of this species group. This works successfully sequenced the mitochondrial cytochrome oxidase (COI) and 16S rDNA genes of 48 specimens from eight localities in the western Atlantic, Western Pacific and Indian Ocean. Together with the sequences of two specimens from the type locality eastern Atlantic of P. martia in the GenBank, the present analysis includes topotypic material of all the four species in this group. The highest COI sequence divergence in this group is revealed to be 23.0%. Moreover, intraspecific COI sequence divergence can be as high as 18.6% in P. martia, 11.7% in P. orientalis and 16.8% in P. semilaevis. Analysis using the species delimitation model Species Tree and Classification Estimation, Yarely (STACEY) reveals that the P. martia group actually consists of 11 species. Except for P. parvimartia, there are cryptic species in the other three species. There should be five species within the material currently identified as P. martia, two species in P. orientalis and three species in P. semilaevis. Nevertheless, distinguishing morphologically differences have so far only been found amongst the cryptic species in P. orentalis and P. semilaevis. Keywords: Plesionika、"Plesionika martia" group、STACEY、Molecular taxonomy
URI: http://ethesys.lib.ntou.edu.tw/cgi-bin/gs32/gsweb.cgi?o=dstdcdr&s=G0010634014.id
Appears in Collections:[海洋生物研究所] 博碩士論文

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