ELECTROPHORETIC AND MORPHOMETRIC CHARACTERS IN POPULATION DIFFERENTIATION OF THE PEARL OYSTER, PINCTADA-RADIATA (LEACH), FROM AROUND BAHRAIN

被引:18
作者
BEAUMONT, AR
KHAMDAN, SAA
机构
[1] School of Ocean Sciences, University College of North Wales, Marine Science Laboratories, Gwynedd, LL59 5EY, Wales, Menai Bridge
关键词
D O I
10.1093/mollus/57.4.433
中图分类号
Q17 [水生生物学];
学科分类号
071004 ;
摘要
Variation at the leucine aminopeptidase (Lap), glucose phosphate isomerase (Gpi) and tetrazolium oxidase (To) loci was investigated in samples of three populations, Al-Mayana (MAY), Shigita (SH) and Mina Salman (MS), of Pinctada radiata from pearl oyster beds around Bahrain. The To locus was monomorphic. Significant Lap and Gpi heterozygote deficiencies were evident and it is suggested that these were generated by selection. The MS population, to the East of Bahrain, differed significantly in Gpi allele frequencies from both Northern populations (MAY, SH) and Nei's genetic identity indicates a close relationship between the Northern populations. Measurements of shell morphometrics were used both as ratios of one dimension to another, and as regressions of one dimension on another to examine relatedness between populations. Both these morphometric approaches gave different results from each other and also differed from the electrophoretic data. It is concluded that estimates of relatedness in pearl oysters based on electrophoretic data will be more reliable than those based on shell shape.
引用
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页码:433 / 441
页数:9
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