How siblings adjust sib-sib communication and begging signals to each other
How siblings adjust sib-sib communication and begging signals to each other
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DOI：
10.1016/j.anbehav.2010.09.012
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发表时间：
2010-12-01
期刊：
影响因子：
2.5
通讯作者：
Roulin, Alexandre
中科院分区：
文献类型：
--
作者：
Dreiss, Amelie;Lahlah, Naouel;Roulin, Alexandre
父母根据乞讨行为的强度分配给子女食物资源。乞讨包括几种活动，包括应该诚实地发出需要信号的声音，以及在巢中争夺父母可以预见的提供食物的位置。虽然兄弟姐妹之间可以相互调整乞讨水平，但其潜在机制仍不清楚。我们研究了这个问题，在实验中的两个小鸡育雏仓猫头鹰，草鸮，一个物种，其中兄弟姐妹口头沟通，在长期没有父母。兄弟姐妹之间的声音交流，即所谓的兄弟姐妹协商，是为了解决谁将优先获得下一个交付的不可分割的食物的冲突。我们发现，当一个雏鸟产生更长的谈判电话，并站在更接近巢箱入口在父母的情况下，它的兄弟姐妹口头谈判的速度较低。此外，当一个人产生更多的谈判呼吁在父母的情况下，它的兄弟姐妹恳求父母的回报不那么激烈，乞讨是决定雏鸟获得食物的关键因素。我们的结论是，在巢中的位置和持续时间的谈判呼吁在父母的情况下产生的影响率生产谈判电话，这反过来又影响了兄弟姐妹从他们的父母乞求食物的速度。因此，调整乞讨行为可能取决于在父母长期缺席的情况下发生的复杂的兄弟姐妹互动。(C)2010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。
Parents allocate food resources to their offspring in proportion to the intensity of begging behaviour. Begging encompasses several activities including vocalizations that should honestly signal need and jostling for the position in the nest where parents predictably deliver food items. Although siblings are known to adjust begging level to each other, the underlying mechanism remains unknown. We examined this issue in experimental two-chick broods of the barn owl, Tyto alba, a species in which siblings communicate vocally with each other in the prolonged absence of parents. The function of sib-sib vocal communication, so-called sibling negotiation, is to resolve conflicts over which individual will have priority of access to the next delivered indivisible food item. We found that when a nestling produced longer negotiation calls and stood closer to the nestbox entrance in the absence of parents, its sibling vocally negotiated at a lower rate. Additionally, when an individual produced more negotiation calls in the absence of parents, its sibling begged less intensely at the parent's return, with begging being the key factor that determined which nestling obtained a food item. We conclude that position in the nest and the duration of negotiation calls produced in the absence of parents influence the rate of producing negotiation calls, which in turn influences the rate at which siblings beg for food from their parents. Adjusting begging behaviour could therefore depend on complex sib-sib interactions taking place in the prolonged absence of parents. (C) 2010 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.