Male size does not affect territorial behaviour and life history traits in a sphecid wasp
Male size does not affect territorial behaviour and life history traits in a sphecid wasp
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雄性体型不影响黄蜂的领地行为和生活史特征
作者：
E. Strohm;K. Lechner
每个后代的最佳母体投资由每个后代的投资与后代适应度之间的关系决定。欧洲蜂狼（Philanthus triangulum）是一种独居、大量供给食物的黄蜂，其后代的大小与供给量相关。我们调查了成年男性的繁殖成功是否取决于体型，从而影响父母投资的分配。由于 P. triangulum 雄性的交配成功率无法通过现场观察来确定，因此我们评估了雄性体型对其领地特征、领地行为和生活史特征的影响。领地大小与雄性体型的相关性较弱，但领地质量的衡量标准（附近雌性巢穴的数量）与雄性体型无关。拥有的时间和气味标记的强度都与雄性体型无关。领地拥有者的体型略小于无领地的男性。脂肪的绝对量与体型呈正相关，但由于异速生长关系，脂肪储存的能量当量似乎与体型无关。在四种不同条件下（实验室中、室外飞行笼中和野外有或没有食物），寿命并不受体型的显着影响。我们讨论了这些结果与其他研究之间的差异，这些研究大多报告了大型雄性的优势。我们认为，在非接触式的雄性与雄性互动中，如欧洲狼狼中所见，体型可能不是比赛成功的关键决定因素。我们的结论是，没有证据表明雄性生殖成功与否存在强烈的体型依赖性。因此，雄性后代的繁殖成功可能并不依赖于父母的投资，而父母的投资会影响雌性的投资分配。版权所有 2000 动物行为研究协会。
The optimum maternal investment per offspring is determined by the relationship between the investment per offspring and offspring fitness. In the European beewolf, Philanthus triangulum, a solitary mass-provisioning sphecid wasp, offspring size correlates with the amount of provisions. We investigated whether the reproductive success of adult males depends on body size in a way that would influence the allocation of parental investment. Since the mating success of P. triangulum males cannot be determined by observation in the field, we assessed the influence of male size on characteristics of their territories, territorial behaviour and life history traits. Territory size was weakly correlated with male size, but a measure of territory quality (number of female nests in the vicinity) was independent of male size. Neither the duration of ownership nor the intensity of scent marking was correlated with male size. Territory owners were slightly smaller than nonterritorial males. The absolute amount of fat was positively correlated with size but, owing to allometric relationships, the energetic equivalent of the fat store appeared to be independent of size. Life span was not significantly influenced by body size under four different conditions (with and without food in the laboratory, in an outdoor flight cage and in the field). We discuss the discrepancy between these results and other studies that have mostly reported advantages to large males. We suggest that in noncontact male-male interactions, as seen in the European beewolf, body size might not be the key determinant for success in contests. We conclude that there is no evidence for a strong size dependence of male reproductive success. Thus the reproductive success of male progeny probably does not depend on parental investment in a way that would influence the investment allocation of females. Copyright 2000 The Association for the Study of Animal Behaviour.
父母照顾的演变
DOI：
10.1093/acprof:oso/9780199692576.003.0016
发表时间：
2012
期刊：
--
影响因子：
--
作者：
Kölliker M
通讯作者：
Kölliker M
昆虫交配系统的进化
DOI：
10.1093/acprof:oso/9780199678020.003.0004
发表时间：
2014
期刊：
--
影响因子：
--
作者：
Ritchie M
通讯作者：
Ritchie M