A COST OF MATING WITH MALES THAT DO NOT TRANSFER SPERM IN FEMALE DROSOPHILA-MELANOGASTER
A COST OF MATING WITH MALES THAT DO NOT TRANSFER SPERM IN FEMALE DROSOPHILA-MELANOGASTER
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DOI：
10.1016/0022-1910(92)90070-t
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发表时间：
1992-03-01
影响因子：
2.2
通讯作者：
CHAPMAN, T
中科院分区：
文献类型：
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作者：
CHAPMAN, T
目的是通过比较接受两者(持续暴露于野生型雄性)、降低精子(间歇性暴露于XO雄性，交配时不转移精子)或降低精子及附属液(间歇性暴露于野生型或XO雄性，其外生殖器被显微烧灼，因此既不转移精子，也不转移附液)的雌性，来测试附属液和精子对雌性存活率的影响。在接触XO雄性的雌性中，雄性显微切割提高了雌性的存活率，这表明与XO雄性交配的成本。这一成本不能归因于精子转移的影响。对于微灼和完整的雄性，暴露于XO雄性的雌性比暴露于野生型雄性的雌性存活更长时间。因此，与XY和XO雄性接触的非交配成本肯定有所不同，XO雄性求偶水平较低，与雌性活动水平较低有关，这可能是原因所在。由于非交配成本的差异，不可能测试接受精子或附属液的成本。
The aim was to test for effects of accessory fluid and sperm on female survival, by comparing females that received both (exposed continuously to wild-type males), lowered sperm (exposed intermittently to XO males, which transfer no sperm at mating) or lowered sperm and accessory fluid (exposed intermittently to wild-type or XO males with their external genitalia microcauterized and which therefore transfer neither sperm nor accessory fluid). Within females exposed to XO males, male microcautery improved female survival, indicating a cost of mating with XO males. This cost cannot be attributed to an effect of sperm-transfer. For both microcauterized and intact males, females exposed to XO males survived longer than females exposed to wild-type males. There must therefore have been a difference in the non-mating costs of exposure to XY and XO males, and the lower levels of courtship by XO males, associated with lower levels of female movement, may have been responsible. Because of this difference in non-mating costs, it was not possible to test for costs of receiving sperm or accessory fluid.