RELATIONSHIPS BETWEEN ALLOZYMIC HETEROZYGOSITY, BODY SIZE, AND SURVIVAL TO NATURAL ANOXIC STRESS IN THE PALOURDE RUDITAPES-DECUSSATUS L (BIVALVIA, VENERIDAE)

被引：40

作者：

BORSA, P ^{[1
]}

JOUSSELIN, Y ^{[1
]}

DELAY, B ^{[1
]}

机构：

[1] UNIV MONTPELLIER 2, GENET LAB, CNRS, URA 327, F-34060 MONTPELLIER, FRANCE

来源：

JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY | 1992年 / 155卷 / 02期

关键词：

ANOXIC STRESS; BIVALVE; HETEROZYGOSITY; MALAIGUE; RUDITAPES-DECUSSATUS; SURVIVAL;

D O I：

10.1016/0022-0981(92)90061-E

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Samples of the bivalve Ruditapes decussatus collected in the lagoon of Thau (France, Mediterranean) after a period of natural anoxia ("malaigue") that caused significant mortality were compared to other samples that had not experienced anoxia. Survival to malaigue was positively related to both shell length and heterozygosity at seven putative enzyme loci. Heterozygosity at locus Pgm-l was significantly higher in the sample of survivors than in the control; this was also observed in a sample of individuals monitored over a malaigue induced in artificial conditions. These results suggest that heterozygosity at locus Pgm-l could be directly involved in determining the physiological mechanism of resistance to anoxic stress, but a genetic explanation involving the role of gametic disequilibrium is also discussed.

引用

页码：169 / 181

页数：13

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