PARASITISM AND HOST REPRODUCTIVE EFFORT
PARASITISM AND HOST REPRODUCTIVE EFFORT
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DOI：
10.2307/3545356
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发表时间：
1993-09-01
期刊：
影响因子：
3.4
通讯作者：
FORBES, MRL
中科院分区：
文献类型：
--
作者：
FORBES, MRL
寄主生殖努力的适应性变化可能是寄主生殖输出与寄生率或寄生程度之间的正相关或负相关关系的原因。这一假说可以做得更普遍（生殖功能分配模式的适应性变化），但在行为和进化生态学领域基本上被忽视了。事实上，缺乏这种适应性反应的明确例子。然而，关于生活史权衡的理论预测，宿主可以通过改变自己的RE来最小化寄生虫的影响。这种改变可以在诱导或不诱导对寄生虫的防御的情况下发生。存在几种经验的方法来研究适应性变化的主机RE，所有这些方法都需要一个坚实的理解下研究的寄生虫-宿主协会的自然历史。测试主机RE（和模式的分配）的适应性变化，应提供更好地了解寄生虫-宿主的相互作用和共同进化，以及深入了解适应性表型可塑性的演变。
Adaptive changes in reproductive effort (RE) of parasitized hosts may account for both inverse and positive relationships between host reproductive output and incidence or degree of parasitism. This hypothesis can be made more general (adaptive changes in patterns of allocation to reproductive functions), but has been largely ignored in the fields of behavioral and evolutionary ecology. In fact, definitive examples of such adaptive responses are lacking. Yet theory on life-history trade-offs predicts that hosts may minimize the impact of parasites by altering their own RE. Such alterations may occur with or without induction of defenses against parasites. Several empirical approaches exist for studying adaptive changes in host RE; all of these approaches require a firm understanding of the natural history of the parasite-host association under study. Tests of adaptive changes in host RE (and patterns of allocation) should provide a better understanding of parasite-host interactions and coevolution as well as insights into the evolution of adaptive phenotypic plasticity.