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首页> 外文期刊>Ethology >Short-Term Nutritional Limitation Affects Mating Behaviour and Reproductive Output in Dwarf Spiders
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Short-Term Nutritional Limitation Affects Mating Behaviour and Reproductive Output in Dwarf Spiders

机译：短期营养限制影响矮蜘蛛的交配行为和生殖产量

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Mating decisions can vary considerably depending on individual experience, mate availability and nutritional status. Here, we applied short-term dietary restrictions to adult female spiders that were well fed during the juvenile stage in an effort to understand whether and how brief periods of food shortage can influence male and female mating decisions and mating behaviour. To assess whether responses vary between closely related species, we conducted the same experiment on the dwarf spiders Oedothorax retusus and O.apicatus. During courtship and mating, males of both species offer secretion to females from glandular tissue in their prosoma. Females were subject to food shortage over a period of 3wks (low-diet' treatment, LD) or fed regularly (high-diet' treatment, HD). We compared courtship probability, mating probability/behaviour, and reproductive output between dietary groups and species. In both Oedothorax species, females in the LD treatment were less likely to mate and more aggressive towards males. Furthermore, LD females produced egg sacs that were significantly lighter than were those of the HD females. Effects of food deprivation on copulation duration, gustatory behaviour and oviposition latency differed between species. Our study shows that short periods of dietary restriction during the adult stage can strongly affect mating behaviour and reproductive output with differences between closely related species.
机译：交配决定可能会因个人经验，交配对象和营养状况而有很大差异。在这里，我们对成年雌性蜘蛛进行了短期饮食限制，这些成年雌性蜘蛛在幼年阶段就得到了良好的喂养，以期了解短期的食物短缺是否以及如何影响男性和女性的交配决定和交配行为。为了评估密切相关物种之间的反应是否有所不同，我们对矮蜘蛛Oedothorax retusus和O.apicatus进行了相同的实验。在求偶和交配期间，两种物种的雄性都会从雌性腺体的腺组织向雌性分泌。女性在3周内遭受食物短缺（低饮食治疗，LD）或定期进食（高饮食治疗，HD）。我们比较了饮食群体和物种之间的求偶概率，交配概率/行为以及生殖产出。在这两种食齿兽种类中，接受LD处理的雌性交配的可能性都较小，对雄性的攻击性更强。此外，LD雌性的卵囊比HD雌性的卵囊轻得多。不同物种之间食物缺乏对交配持续时间，味觉行为和产卵潜伏期的影响不同。我们的研究表明，成年期的短期饮食限制会强烈影响交配行为和生殖产量，并且密切相关的物种之间也存在差异。

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