OVERDOMINANCE IN EARLY-LIFE STAGES OF AN AMERICAN OYSTER STRAIN

被引：21
作者：
HU, YP
LUTZ, RA
VRIJENHOEK, RC
机构：
[1] RUTGERS UNIV, CTR THEORET & APPL GENET, NEW BRUNSWICK, NJ 08903 USA
[2] RUTGERS UNIV, INST MARINE & COASTAL SCI, NEW BRUNSWICK, NJ 08903 USA
来源：
JOURNAL OF HEREDITY | 1993年 / 84卷 / 04期
关键词：
D O I：
10.1093/oxfordjournals.jhered.a111335
中图分类号：
Q [生物科学];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Development of microelectrophoretic techniques allows for the first time an examination of Mendelian processes and natural selection in the early life stages of marine bivalve mollusks. Using these techniques, we found heterozygosity at a glucose-6-phosphate isomerase locus (Gpi) to be strongly associated with the fitness of larval and juvenile oysters (Crassostrea virginia) from a selectively bred strain (Rutgers, CXF MSX resistant). Among progeny of two types of crosses (paired crosses and a mass spawning), Gpiheterozygotes exhibited greater survival and faster growth than the corresponding homozygotes. Linked recessive genes appear to be responsible for the advantage associated with Gpi heterozygotes.
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页码：254 / 258
页数：5
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