Experimental and eigenvalue-sensitivity analyzes on the evolution of life-history parameters in a migratory-resident insect

迁徙昆虫生活史参数演化的实验和特征值敏感性分析

基本信息

批准号：
05640706
负责人：
YAHARA Tetsukazu
金额：
$ 1.34万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1993
资助国家：
日本
起止时间：
1993 至 1994
项目状态：
已结题

项目摘要

We studied the evolution of reproduction and survival schedules in the azuki bean weevil, Callosobruchus chinensis, whose life history repeats migration and residence phases between host plants and storages. We used wild strains of C.chinensis as well as a laboratory strains which has been kept at high densities for more than 50 years. The wild strains were considered that they has rarely density-dependent mortality because of the long migratory phase.The laboratory strain has a larger body size at emergence, more daily fecundity, and longer longevity in comparison with wild strains under non-feeding condition. With feeding, however, those wild strains has more daily fecundity and longer longevity. We progress the eigenvalue-sensitivity analysis based on the experimental results.In addition, we estimated the most effective parameter (s) on the fitness under density-dependent condition, based on sensitivity of the equilibrium population size to population parameters. Population processes were formulated as the logistic-defference equation separately outside (oviposition) and inside (larval development) beans. The sensitivity analysis showed that maximal production of hatched eggs were most effective on the equilibrium population size. We elucidated the less mobility of the laboratory strain as the most contributed characteristics to higher the maximal production of hatches eggs.

我们研究了Azuki Bean Weevil，Callosobruchus Chinensis的繁殖和生存时间表的演变，其人生历史重复迁移和宿主植物之间的居住阶段。我们使用了C. chinensis的野生菌株和实验室菌株，该菌株已保持高密度超过50年。野生菌株被认为由于迁移阶段很长，因此很少有密度依赖性死亡率。实验室应变在出现时的体型较大，每日繁殖力越多，并且与在非进食条件下的野生菌株相比，寿命更高，并且寿命更长。然而，随着喂养，这些野生菌株每天都有更多的繁殖力和更长的寿命。我们根据实验结果进行特征值 - 敏感性分析。此外，我们估计了在密度依赖性条件下适应性的最有效参数，基于平衡种群对种群参数的敏感性。人口过程被表达为外部（产卵）和内部（幼虫发育）豆的逻辑效果方程。灵敏度分析表明，孵化卵的最大产生在平衡种群大小上是最有效的。我们阐明了实验室应变的迁移率较小，因为最大程度地产生了孵化卵的最大产量。