寄主与寄生虫的接触以及对寄生虫的敏感性可预测牛鸟寄主的弃窝现象

IF 2.3 2区 生物学 Q2 BEHAVIORAL SCIENCES
Christina Petalas , Antoine Turcotte-van de Rydt , Simon Ducatez , Mélanie F. Guigueno
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引用次数: 0

摘要

放弃育雏以最大限度地提高终生繁殖成功率,可能是由于当前的成本影响了未来的繁殖机会。在某些情况下,放弃育雏可能是一种进化的繁殖策略,而不是对恶劣天气和捕食等压力的普遍反应。义务性育雏寄生是一种繁殖策略,寄生物种完全依赖其他物种来抚养幼体,这对宿主造成了适应性成本,可能成为弃巢的触发因素。这种成本以及由此产生的放弃繁殖策略可能会因宿主与寄生虫的接触、对寄生的敏感性以及当前繁殖努力的价值(即育雏价值)而不同。我们进行了一项系统发育控制的荟萃分析,涵盖了三种食性牛鸟(Molothrus sp.在该分析中,我们研究了寄生与未寄生对弃巢(弃巢和埋卵)的影响:小范围内的栖息地(在开阔地与森林栖息地宿主与寄生虫相遇的频率更高)和大范围内的栖息地(在草原地区与非草原地区寄生虫与宿主之间的相互作用时间更长)、育雏价值(一窝的相对价值)和宿主物种对育雏寄生的敏感性(相对体重)。总体而言,寄生会增加弃巢率。这种增加在开阔的非森林栖息地最为明显,体型更小、更敏感的寄主更有可能放弃其窝。草原地区的育雏价值和发生率并不影响离群率,这表明近期寄主与寄生虫之间更精细的相互作用比共同进化史更重要。因此,放弃育雏可用于多种亲本照料策略,包括育雏寄生宿主的抗寄生性防御。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Host–parasite contact and sensitivity to parasitism predict clutch abandonment in cowbird hosts

Abandoning a brood to maximize lifetime reproductive success may result from the current costs affecting future reproductive opportunities. In certain contexts, clutch abandonment can be an evolved breeding strategy rather than a generalized response to stressors such as inclement weather and predation. Obligate brood parasitism, a reproductive strategy in which a parasitic species relies solely on other species to raise its young, imposes fitness costs to hosts and could serve as a trigger for clutch abandonment. This cost, and the resulting clutch abandonment strategy, may vary according to contact with the parasite, sensitivity to parasitism and the value of the current reproductive effort (i.e. brood value). We conducted a phylogenetically controlled meta-analysis covering 85 host species of the three generalist cowbird species (Molothrus sp.) in which we examined the following effects on the abandonment (nest desertion and egg burial) of parasitized versus unparasitized clutches: habitat at a small scale (higher host–parasite encounter frequency in open versus forested habitats) and at a large scale (longer interaction between parasites and hosts in prairie versus nonprairie regions), brood value (relative value of a clutch) and host species sensitivity to brood parasitism (relative body mass). Parasitism increased clutch abandonment overall. This increase was strongest in open nonforested habitats, with smaller, more sensitive hosts being more likely to abandon their clutch. Brood value and occurrence in prairie regions did not affect clutch abandonment, indicating that recent, more fine-scale host–parasite interactions were more important than coevolutionary history. Therefore, the abandonment of a brood can be used in diverse parental care strategies, including antiparasitic defences of brood-parasitic hosts.

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来源期刊
Animal Behaviour
Animal Behaviour 生物-动物学
CiteScore
4.60
自引率
8.00%
发文量
236
审稿时长
10.2 weeks
期刊介绍: Growing interest in behavioural biology and the international reputation of Animal Behaviour prompted an expansion to monthly publication in 1989. Animal Behaviour continues to be the journal of choice for biologists, ethologists, psychologists, physiologists, and veterinarians with an interest in the subject.
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