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首页> 外文期刊>Ethology >Interactions Between Multiple Forms of Nuptial Feeding in the Wood Cricket Nemobius sylvestris (Bosc): Dual Spermatophores and Male Forewings
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Interactions Between Multiple Forms of Nuptial Feeding in the Wood Cricket Nemobius sylvestris (Bosc): Dual Spermatophores and Male Forewings

机译：木CriNemobius sylvestris（Bosc）的多种形式的婚育之间的相互作用：双精子和雄性前翅。

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摘要

Nuptial feeding is widespread in insects, with many species showing one form of feeding. In the wood cricket Nemobius sylvestris, the male may provide multiple forms of feeding during an encounter: two kinds of edible spermatophores (microspermatophore and macrospermatophore) and forewing secretions. We examined the roles and interactions of the spermatophores and forewing exposure in the mating sequence of this species. The small microspermatophore was not found to contain sperm, whereas the larger macrospermatophore contained sperm. In mating trials, the microspermatophore may be transferred to the female early in the trial. Transfer of the microspermatophore was not a necessary prerequisite to the subsequent transfer of one or more sperm-filled macrospermatophores. Forewing exposure increased male mating success, as males with exposed forewings were more successful in transferring the macrospermatophore than males with experimentally covered forewings, both in terms of occurrence of successful transfer and the number of macrospermatophores transferred. Male mating success was very low when the male's forewings were covered and when the male did not transfer a microspermatophore. The sperm-filled macrospermatophore may have nutritional value, as females eventually consumed all transferred macrospermatophores, and males consumed all rejected macrospermatophores. Somewhat unexpectedly, this study casts doubt on the role of the forewings in nuptial feeding. Although males with exposed forewings were more successful in macrospermatophore transfer, females actually palpated these males' forewings less. We posit the alternative hypothesis that the forewing secretions play a role in chemical communication to the female (e.g., signaling male quality), possibly instead of female nourishment.
机译：婚后取食在昆虫中很普遍，许多物种显示出一种取食形式。在木Nemobius sylvestris中，雄性可能会在相遇时提供多种喂养方式：两种可食用的精原细胞（微精和大精）和前分泌物。我们检查了该物种的交配序列中精原细胞和前翅暴露的作用和相互作用。未发现小的精子细胞包含精子，而较大的大精细胞细胞包含精子。在交配试验中，可能在试验的早期将精子细胞转移给雌性。显微精子细胞的转移不是随后转移一个或多个充满精子的巨精细胞的必要先决条件。前翅暴露提高了雄性交配的成功率，因为​​在成功转移的发生和转移的宏精原细胞数量方面，具有裸露前翅的雄性比具有实验性覆盖前翅的雄性更能成功转移巨精。当雄性的前爪被覆盖并且雄性不转移微精细胞团时，雄性交配成功率非常低。充满精子的巨精细胞可能具有营养价值，因为雌性最终消耗了所有转移的巨精细胞，而雄性则消耗了所有被拒绝的巨精细胞。出乎意料的是，这项研究对前爪在婚育中的作用产生了怀疑。虽然雄性裸露的雄性在巨精细胞转移方面更为成功，但雌性实际上却较少触碰这些雄性的前躯。我们提出了另一种假设，即前代分泌物在与女性的化学交流中起着一定的作用（例如，向男性发出信号），可能代替了女性的营养。

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