EVIDENCE FROM A NEW-ZEALAND SNAIL FOR THE MAINTENANCE OF SEX BY PARASITISM
EVIDENCE FROM A NEW-ZEALAND SNAIL FOR THE MAINTENANCE OF SEX BY PARASITISM
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DOI：
10.1038/328519a0
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发表时间：
1987-08-06
期刊：
影响因子：
64.8
通讯作者：
LIVELY, CM
中科院分区：
文献类型：
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作者：
LIVELY, CM
有性生殖的广泛发生是进化理论中的一个重要问题，因为在雌雄异株的生物中产生雄性的成本和有限资源在cosexes 1 -4中的分配。在这里，我比较的主要生态假说的预测，通过检查男性频率inPotamopyrgus antipodarum，雌雄异株的淡水蜗牛有性和孤雌生殖populations 5的维护性。这些结果并不支持性别是由可变的物理环境维持的观点6 -9，但它们与性别是由宿主-寄生虫相互作用产生的选择所支持的观点一致10 -14。
The widespread occurrence of sexual reproduction is an important problem in evolutionary theory, because of the cost of producing males in dioecious organisms and the allocation of limited resources in cosexes1–4. Here I compare the predictions of the major ecological hypotheses on the maintenance of sex by examining male frequency inPotamopyrgus antipodarum, a dioecious freshwater snail with both sexual and parthenogenetic populations5. The results do not-support the view that sex is maintained by a variable physical environment6–9, but they are consistent with the idea that sex is favoured by selection resulting from host–parasite interactions10–14.