Reliable aggressive signalling in swamp sparrows
Reliable aggressive signalling in swamp sparrows
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DOI：
10.1016/j.anbehav.2007.07.025
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发表时间：
2008-02-01
期刊：
影响因子：
2.5
通讯作者：
Nowicki, Stephen
中科院分区：
文献类型：
--
作者：
Ballentine, Barbara;Searcy, William A.;Nowicki, Stephen
攻击性表现是否是攻击的可靠预测因子是动物交流研究中一个重要而尚未解决的问题。在这里，我们测试的程度，声音和视觉显示预测随后的攻击领域男性沼泽麻雀，Melospiza georgiana。沼泽麻雀歌曲的简短播放被用来挑起侵略性的信号从一个领土的男性，和主题的显示器被记录为5分钟。一个雄性沼泽麻雀的标本安装，然后显示，再加上额外的播放，和主题被给予14分钟的攻击，而我们继续记录其显示器。在40名受试者中，9人攻击了坐骑，31人没有。对于最初的记录期间和攻击前1分钟，攻击者产生了显着更多的低振幅的“软歌”和更多的回合的翅膀挥舞比nonattackers。攻击者和非攻击者在歌曲类型切换频率或广播歌曲数量、匹配歌曲、喘息或粗声方面没有显著差异。在判别函数分析中，柔和的歌声始终是预测随后攻击的最佳显示。不同的声学形式的软歌被发现，所有这些似乎都是同样的侵略性。显示器的组合预测攻击比单一显示器。沼泽麻雀显示侵略的预测的整体可靠性是令人印象深刻的高。(C)2007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。
Whether aggressive displays are reliable predictors of attack is an important, unresolved issue in animal communication research. Here we test the extent to which vocal and visual displays predict subsequent attack in territorial male swamp sparrows, Melospiza georgiana. A brief playback of swamp sparrow song was used to provoke aggressive signalling from a territorial male, and the subject's displays were recorded for 5 min. A taxidermic mount of a male swamp sparrow was then revealed, coupled with additional playback, and the subject was given 14 min to attack while we continued to record its displays. Of 40 subjects, nine attacked the mount and 31 did not. For both the initial recording period and the 1 min before attack, attackers produced significantly more low-amplitude 'soft songs' and more bouts of wing waving than did nonattackers. Attackers and nonattackers did not differ significantly in song type-switching frequency or in numbers of broadcast songs, matching songs, wheezes or rasps. In discriminant function analyses, soft song was consistently the display that best predicted subsequent attack. Different acoustic forms of soft song were found, all of which appeared to be equally aggressive. Combinations of displays predicted attack better than did single displays. The overall reliability of swamp sparrow displays as predictors of aggression was impressively high. (C) 2007 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.