Intercolony movements and prospecting behaviour in the colonial lesser kestrel
Intercolony movements and prospecting behaviour in the colonial lesser kestrel
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DOI：
10.1016/j.anbehav.2009.12.007
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发表时间：
2010-04-01
期刊：
影响因子：
2.5
通讯作者：
Cordero, Pedro J.
中科院分区：
文献类型：
--
作者：
Calabuig, Gustau;Ortego, Joaquin;Cordero, Pedro J.
个体旨在收集关于未来潜在繁殖地的信息的探索活动被称为探矿。我们研究了殖民地小红隼，Falco naumanni勘探行为，使用的详细信息，从radiomarked个人，其繁殖尝试，我们终止在小鸡阶段，密集的录像带记录的巢。有一半的radiomarked个人积极勘探巢在自己和外国的殖民地，他们访问的殖民地高达7400米，远离自己的繁殖殖民地。探矿者到达一个给定的巢的存在和数量的影响参数在两个殖民地和巢规模。探矿者访问每巢增加与殖民地的生产力和殖民地的大小下降。后者并不一定意味着勘探者避免大的殖民地，而是可能是殖民地的稀释效应的结果，在那里可以勘探更多的潜在巢穴。每巢吸引的探矿者的数量与殖民地的连通性呈正相关，表明高空间殖民地隔离和少量的繁殖对在附近的殖民地减少了探矿者到达一个给定的巢。最后，探矿者访问每巢增加，然后减少与父母的喂养率，表明这种父母的活动可以吸引探矿者达到一定的阈值，在巢主访问他们的巢频繁，足以让探矿者远离。总体而言，这项研究表明，勘探是获取公共信息，最终可以确定繁殖扩散的决定和繁殖聚集的增长和动态的机制。(C)2009年，动物行为研究协会。由爱思唯尔有限公司出版。保留所有权利。
The exploratory activity of individuals aimed at collecting information about potential future breeding sites is known as prospecting. We studied prospecting behaviour in the colonial lesser kestrel, Falco naumanni, using detailed information from radiomarked individuals, whose breeding attempts we terminated at the chick stage, and intensive videotape recording of nests. Half of the radiomarked individuals actively prospected nests in both their own and foreign colonies and they visited colonies up to 7400 m away from their own breeding colony. The presence and number of prospectors arriving at a given nest were influenced by parameters at both the colony and the nest scale. Prospector visits per nest increased with colony productivity and decreased with colony size. The latter does not necessarily mean that prospectors avoid large colonies but rather may be consequence of a dilution effect in colonies where more potential nests can be prospected. The number of prospectors attracted per nest was positively associated with colony connectivity, indicating that both high spatial colony isolation and a small number of breeding pairs in nearby colonies reduced the arrival of prospectors at a given nest. Finally, prospector visits per nest increased and then decreased with parental feeding rates, indicating this parental activity can attract prospectors up to a certain threshold at which nest owners visit their nests frequently enough to keep prospectors away. Overall, this study suggests that prospecting is the mechanism of acquiring public information that could ultimately determine breeding dispersal decisions and the growth and dynamics observed in breeding aggregations. (C) 2009 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.