Factors affecting body size and fat content in a digger wasp
Factors affecting body size and fat content in a digger wasp
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影响挖掘黄蜂体型和脂肪含量的因素
作者：
E. Strohm
摘要：体型是最重要的生活史特征之一。在大规模供应的单独膜翅目中，成虫所能达到的最大尺寸不受幼虫的控制，而是受到母亲提供的资源量的限制。我研究了不同母体资源的数量以及潜在干扰的非生物（温度）和生物（真菌侵染）因素对独居黄蜂、欧洲蜂狼 Philanthus triangulum F.（膜翅目，Sphecidae）后代体型和脂肪储备的影响。雌性为其后代提供不同的资源，这些资源可能会影响后代的大小（卵、巢细胞和作为食物的麻痹蜜蜂）。所提供的蜜蜂数量解释了茧长度变化的最大比例。随着蜜蜂数量的增加（一到四只），每只蜜蜂的后代体重增加较少。相对脂肪含量随体型增大而增加。在蜜蜂数量一定的情况下，雄性蜜蜂比雌性小。喂养期的持续时间与巢室中蜜蜂的数量无关，但随着环境温度（20、25、30°C）的升高而缩短。茧的大小受温度影响，但影响并不均匀。来自含有两只和三只蜜蜂的巢室的茧在 25°C 时比在 20°C 时更大； 30°C 下的结果与任一较低温度下的结果没有差异。然而，在含有一只蜜蜂的巢室中，茧的长度与温度无关。真菌感染的亚致死水平可能会对茧的大小产生较小的负面影响。冬眠期间的不同温度（8°C 与 13°C）不会影响新生成虫的体型或脂肪含量。将大量供应狩猎黄蜂的这些结果与经过充分研究的草食性昆虫进行了比较。
Abstract Body size is one of the most important life history traits. In mass-provisioning solitary Hymenoptera, the maximum attainable adult size is not under the control of the larva but is limited by the amount of resources provided by the mother. I investigated the effect of the amount of different maternal resources and potentially interfering abiotic (temperature) and biotic (fungus infestation) factors on offspring body size and fat reserves in a solitary digger wasp, the European beewolf, Philanthus triangulum F. (Hymenoptera, Sphecidae). Females provide different resources for their progeny that might influence progeny size (egg, brood cell, and paralysed honey-bees as food). The number of bees provisioned explained the largest proportion of variation in cocoon length. With an increasing number of bees (one to four), progeny gained less weight per bee. Relative fat content increased with size. With a given number of bees, males were smaller than females. The duration of the feeding period was independent of the number of bees in a brood cell but decreased with increasing ambient temperatures (20, 25, 30°C). Cocoon size was influenced by temperature but the effect was not uniform. Cocoons from brood cells containing two and three bees were larger at 25°C than at 20°C; those at 30°C did not differ from those at either lower temperature. However, in brood cells containing one bee, cocoon length was independent of temperature. Sublethal levels of fungus infestation may have a small negative effect on cocoon size. Different temperatures during hibernation (8 vs 13°C) did not affect the size or fat content of emerging adults. These results on a mass-provisioning hunting wasp are compared with the well-studied herbivorous insects.
昆虫交配系统的进化
DOI：
10.1093/acprof:oso/9780199678020.003.0004
发表时间：
2014
期刊：
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影响因子：
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作者：
Ritchie M
通讯作者：
Ritchie M