Parasitism and survival in a damselfly: does host sex matter?
Parasitism and survival in a damselfly: does host sex matter?
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DOI：
10.1098/rspb.2001.1641
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发表时间：
2001-06-07
影响因子：
4.7
通讯作者：
Rolff, J
中科院分区：
文献类型：
--
作者：
Braune, P;Rolff, J
我们提供了在野外笼中被寄生水螨感染的豆娘存活率的实验数据。此外，我们还展示了模拟恶劣天气条件下的相关实验室数据。在操纵试验中，被寄生雌虫的个体状况是田间条件下生存的重要决定因素，个体状况以羽化时的体重来衡量。相比之下，这种关系在雄性和未被寄生的雌性中没有发生。在室内实验中发现，水螨和羽化时的体重对雌雄豆娘成活率的降低都有显著的影响。综上所述，寄主寄生的影响与环境条件有关，寄主性别对寄生的反应存在差异。这是讨论在免疫能力的无脊椎动物的光。
We present experimental data on the survivorship of damselflies infested by parasitic water mites from a population in field cages. In addition, we show correlative laboratory data under simulated severe weather conditions. In the manipulative experiment, parasitized females' individual condition, which was measured as weight at emergence, was an important determinant of survival under field conditions. In contrast, such a relationship did not occur in males and unparasitized females. It was found in the laboratory experiment that water mites as well as weight at emergence both contributed significantly to the reduced survivorship of male and female damselflies. It was concluded that the impact of parasitism depends on environmental conditions and that host sexes differ in their responses to parasitism. This is discussed in the light of immunocompetence in invertebrates.