Enhanced cost of mating in female sterile mutants of Drosophila melanogaster

被引:0
作者
Ueyama, M [1 ]
Fuyama, Y [1 ]
机构
[1] Tokyo Metropolitan Univ, Dept Biol, Hachioji, Tokyo 1920397, Japan
关键词
Drosophila; female sterile mutant; cost of mating; life span;
D O I
暂无
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
In Drosophila females, mating is known to cause a reduction in life span, which is referred to as 'the cost of mating'. Since mating enhances oogenesis and oviposition, the cost of mating may be regarded as a trade-off between reproduction and longevity. We examined whether the cost of mating exists in mutant females that are unable to produce eggs. Three different mutant alleles of ovarian tumors (otu) and an allele of dunce (dnc(M11)) of Drosophila melanogaster were used to sterilize females. For all the female sterile mutants tested, mating dramatically decreased the life span of homozygous sterile females. Even more extreme shortening of life spans were observed when the sex peptide gene (Acp70A) was expressed in homozygous otu females, though they were virgin, indicating that the shortening in life span is due to seminal factors. These results indicate that the cost of mating is greater in females defective in oogenesis than that in normally fertile females.
引用
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页码:29 / 36
页数:8
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