Genetic differentiation of Macrognathus siamensis within the Mekong River between Laos and Cambodia

被引：4

作者：

Takagi, A. P. ^{[1
]}

Ishikawa, S. ^{[2
]}

Nao, T. ^{[3
]}

Song, S. L. ^{[3
]}

Hort, S. ^{[3
]}

Thammavong, K. ^{[4
]}

Saphakdy, B. ^{[4
]}

Phomsouvanhm, A. ^{[4
]}

Nishida, M.

Kurokura, H.

机构：

[1] Univ Tokyo, Grad Sch Agr & Life Sci, Bunkyo Ku, Tokyo 1138657, Japan

[2] Tokai Univ, Sch Marine Sci & Technol, Shizuoka, Japan

[3] Minist Agr Forestry & Fisheries, Dept Fisheries, Phnom Penh, Cambodia

[4] Minist Agr & Forestry, Dept Livestock & Fisheries, Viangchan, Laos

来源：

JOURNAL OF APPLIED ICHTHYOLOGY | 2011年 / 27卷 / 05期

基金：

日本学术振兴会;

关键词：

CATFISH PANGASIANODON-GIGAS; MITOCHONDRIAL-DNA; POPULATION; DIVERSITY;

D O I：

10.1111/j.1439-0426.2011.01774.x

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

This study investigated the genetic variation in the Mastacem-belidae fish Macrognathus siamensis by sequencing 1047 bp of the mitochondrial ND2 gene of 48 fish samples collected in the Mekong River. They were divided into 15 mtDNA haplotypes. The haplotype network and Bayesian tree revealed striking genetic differences between the Laos and Cambodian samples. The high pairwise F statistic values (0.93-0.97) also confirmed this genetic differentiation. Analysis of the molecular clock indicated that these two samples separated approximately four million years ago. Most likely, the genetic variation was influenced by immigration and isolation events as well as by environmental factors. Furthermore, the present study results could be valuable in identifying the conservation and resource management units of this species.

引用

页码：1150 / 1154

页数：5

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