Multiple paternity in two natural populations (orchard and vineyard) of Drosophila.
Multiple paternity in two natural populations (orchard and vineyard) of Drosophila.
复制标题
果蝇两个自然种群（果园和葡萄园）的多重父子关系。
DOI：
10.1073/pnas.93.21.11769
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发表时间：
1996
影响因子：
11.1
通讯作者：
Ayala,FJ
中科院分区：
文献类型：
--
作者：
Ochando,MD;Reyes,A;Ayala,FJ
雄性交配成功是果蝇健康的重要组成部分。精子携带的精液会抑制雌性重新交配的倾向并降低其健康水平。然而，雌性可能会在耗尽第一个雄性的精子之前再次交配，从而使用两个雄性的精子。我们研究了两个果蝇种群的并发多重亲子鉴定（CMP），这两个果蝇种群分别来自苹果园和刚收获后的葡萄园。 CMP 在两个人群中都很高，略高于 50%；但葡萄园中的人口密度并不比果园高得多。人口密度被认为是 CMP 发病率的重要决定因素。我们使用编码酶的四个基因位点作为检测 CMP 的独立标记。
Male mating success is an important fitness component in Drosophila. The seminal fluid conveyed with the sperm inhibits the proclivity of the female to remate and reduces her fitness. Nevertheless, females may remate before they have exhausted the sperm from the first male and consequently use sperm from both males. We have studied concurrent multiple paternity (CMP) in two Drosophila melanogaster populations, from an apple orchard and a vineyard just after harvest. CMP is high in both populations, somewhat greater than 50%; but it is not significantly higher in the vineyard, where the population density is much greater than in the orchard. Population density had been thought to be an important determinant of CMP incidence. We have used four gene loci coding for enzymes as independent markers for detecting CMP.