SUPERIOR DEVELOPMENTAL STABILITY OF HETEROZYGOTES AT ENZYME LOCI IN SALMO-SALAR L

被引：25

作者：

BLANCO, G

SANCHEZ, JA

VAZQUEZ, E

GARCIA, E

RUBIO, J

机构：

[1] Departmento de Biologia Funcional, Area de Genética, Universidad de Oviedo, 33071 Oviedo, Asturias

来源：

AQUACULTURE | 1990年 / 84卷 / 3-4期

关键词：

D O I：

10.1016/0044-8486(90)90086-3

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

The degree of heterozygosity of five enzymatic loci is related to the degree of fluctuating asymmetry of three bilateral traits in two farm stocks and in two natural populations of Salmo salar. In all cases we verified the existence of an inverse correlation of the degree of heterozygosity with the number of asymmetrical traits per individual as well as with the total magnitude of asymmetry that the individuals present. We also detected the association at the populational levels: a higher average populational heterozygosity implies a lower total magnitude of asymmetry. The phenomenon is general and the possibility that the correlation is due to the direct effect of a particular locus is excluded. The use of fluctuating asymmetry is proposed as an indicator of the loss of heterozygosity in salmon populations. © 1990.

引用

页码：199 / 209

页数：11