High synchrony of egg laying in common cuckoos (Cuculus canorus) and their great reed warbler (Acrocephalus arundinaceus) hosts
High synchrony of egg laying in common cuckoos (Cuculus canorus) and their great reed warbler (Acrocephalus arundinaceus) hosts
复制标题
杜鹃 (Cuculus canorus) 及其寄主芦苇莺 (Acrocephalus arundinaceus) 产卵的高度同步性
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
M. Honza
中科院分区：
文献类型：
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作者：
C. Moskát;Z. Barta;M. Hauber;M. Honza
雌性普通杜鹃Cuculus canorus每隔一天产卵一次，通常在宿主完成它们的窝之前寄生在巢穴中。当杜鹃的产卵策略与宿主的产卵策略同步时，寄生虫的繁殖成功率可能会增加。相反，当寄生频率高时，杜鹃雌鸟可能不太能够找到所需阶段的合适巢穴，并且没有任何先前的杜鹃蛋。与此预测相反，我们发现杜鹃和他们的本地主要主机，伟大的苇莺Acrocephalus arundinaceus，异常沉重的育雏寄生（约64%的寄生频率）在匈牙利大飞机之间的铺设模式的高同步性。虽然连续2年寄主的产卵活动呈现不同的时间格局，但杜鹃每年的产卵活动都遵循着不同的时间格局。尽管布谷鸟比大苇莺早2-3周到达研究地点，但还是发生了这种情况。匹配的奠定模式与主机建议的适应性反应，以确保最佳孵化率的杜鹃蛋，以避免多重寄生同一巢，即使在沉重的压力下的育雏寄生。
Female common cuckoos Cuculus canorus lay eggs every other day and typically parasitise nests before the hosts complete their clutches. When laying strategy of the cuckoo is well-synchronised with that of the host, the reproductive success of the parasite may increase. In contrast, when parasitism frequencies are high, cuckoo females might be less able to find suitable nests of the desired stage and without any prior cuckoo eggs. Contrary to this prediction, we found high synchrony of laying patterns between cuckoos and their local primary host, the great reed warbler Acrocephalus arundinaceus, under unusually heavy brood parasitism (ca 64% parasitism frequency) on the Hungarian Great Plane. Although the laying activities of the hosts showed different temporal patterns in the 2 consecutive years studied, the cuckoos closely followed the patterns in each year. This occurred despite the arrival of the cuckoos at the study site 2–3 weeks earlier than the great reed warblers. The matching of laying patterns with those of the hosts suggests an adaptive response to both ensure optimal hatchability of the cuckoo eggs and to avoid multiple parasitism of the same nest even under heavy pressures of brood parasitism.