Low genetic differentiation among widely separated populations of the pearl oyster Pinctada fucata as revealed by AFLP

被引:32
作者
Yu, Da Hui [1 ]
Chu, Ka Hou
机构
[1] Chinese Acad Fishery Sci, S China Sea Fisheries Res Inst, Guangdong 510300, Peoples R China
[2] Chinese Univ Hong Kong, Dept Biol, Hong Kong, Hong Kong, Peoples R China
关键词
AFLP; biogeography; genetic diversity; Pinctada fucata; population genetics;
D O I
10.1016/j.jembe.2005.12.046
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Genetic variation within and among five populations of the pearl oyster Pinctada fucata, from China (Daya Bay, Sanya Bay and Beibu Bay), Japan (Mie Prefecture) and Australia (Port Stephens) was studied using AFLR Three primer pairs generated 184 loci among which 91.8-97.3% is polymorphic. An overall genetic diversity of 0.38 among populations and an average of 0.37 within populations (ranging from 0.35 in Japanese population to 0.39 in Beibu Bay population) were observed. Genetic differentiation among the five populations is low but significant as indicated by pairwise GST (0.0079-0.0404). AMOVA further shows that differentiation is significant among the five populations but is not significant at a broader geographical scale, among the three groups of Chinese, Japanese and Australian populations or among the two groups of Australian and north Pacific populations. The low level of genetic differentiation indicated that P. fucata populations in the west Pacific are genetically linked. Among the five populations, the Australian one is more differentiated from the others, based on both pairwise AMOVA and GST analyses, and is genetically isolated by distance as indicated by Mantel test. However, genetic differences among the three Chinese populations are not correlated with the geographic distances, suggesting that Hainan Island and Leizhou Peninsula may act as barriers blocking gene flow. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:140 / 146
页数:7
相关论文
共 46 条
[1]   Low genetic diversity among isolates of the nematode-trapping fungus Duddingtonia flagrans:: evidence for recent worldwide dispersion from a single common ancestor [J].
Ahren, D ;
Faedo, M ;
Rajastiekar, B ;
Tunlid, A .
MYCOLOGICAL RESEARCH, 2004, 108 :1205-1214
[2]   AFLP™ markers for DNA fingerprinting in cattle [J].
Ajmone-Marsan, P ;
Valentini, A ;
Cassandro, M ;
Vecchiotti-Antaldi, G ;
Bertoni, G ;
Kuiper, M .
ANIMAL GENETICS, 1997, 28 (06) :418-426
[3]   Assessing genetic diversity in Italian goat populations using AFLP® markers [J].
Ajmone-Marsan, P ;
Negrini, R ;
Crepaldi, P ;
Milanesi, E ;
Gorni, C ;
Valentini, A ;
Cicogna, M .
ANIMAL GENETICS, 2001, 32 (05) :281-288
[4]   Large discrepancies in differentiation of allozymes, nuclear and mitochondrial DNA loci in recently founded Pacific populations of the pearl oyster Pinctada margaritifera [J].
Arnaud-Haond, S ;
Bonhomme, F ;
Blanc, F .
JOURNAL OF EVOLUTIONARY BIOLOGY, 2003, 16 (03) :388-398
[5]  
ATSUMI T, 2004, AQUAT BREED, V33, P135
[6]   ELECTROPHORETIC AND MORPHOMETRIC CHARACTERS IN POPULATION DIFFERENTIATION OF THE PEARL OYSTER, PINCTADA-RADIATA (LEACH), FROM AROUND BAHRAIN [J].
BEAUMONT, AR ;
KHAMDAN, SAA .
JOURNAL OF MOLLUSCAN STUDIES, 1991, 57 :433-441
[7]   Ten years of AFLP in ecology and evolution:: why so few animals? [J].
Bensch, S ;
Åkesson, M .
MOLECULAR ECOLOGY, 2005, 14 (10) :2899-2914
[8]   Mitochondrial DNA variation in Indo-Pacific populations of the giant tiger prawn, Penaeus monodon [J].
Benzie, JAH ;
Ballment, E ;
Forbes, AT ;
Demetriades, NT ;
Sugama, K ;
Haryanti ;
Moria, S .
MOLECULAR ECOLOGY, 2002, 11 (12) :2553-2569
[9]   The detection of spatial variation in widespread marine species:: methods and bias in the analysis of population structure in the crown of thorns starfish (Echinodermata: Asteroidea) [J].
Benzie, JAH .
HYDROBIOLOGIA, 2000, 420 (1) :1-14
[10]   GENETIC-DIFFERENCES AMONG BLACK-LIPPED PEARL OYSTER (PINCTADA-MARGARITIFERA) POPULATIONS IN THE WESTERN PACIFIC [J].
BENZIE, JAH ;
BALLMENT, E .
AQUACULTURE, 1994, 127 (2-3) :145-156