Effects of pair bond and presence of conspecifics on singing in captive zebra finches
Effects of pair bond and presence of conspecifics on singing in captive zebra finches
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DOI：
10.1163/156853997x00313
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发表时间：
1997-02-01
期刊：
影响因子：
1.3
通讯作者：
Zann, RA
中科院分区：
文献类型：
--
作者：
Dunn, AM;Zann, RA
野生和圈养斑胸草雀通常会进行无向鸣叫，通常由与群体或群体中其他成员部分隔离的雄性斑胸草雀发出。它没有领地功能，也不在性交前求爱期间使用；其频率因人而异。然而，它的表现速度受到同种动物近距离的严重限制，这项研究调查了哪些社会因素导致了野生捕获斑胸草雀第一代后代的这种限制。与雄性相比，雌性的近距离出现导致歌声的减少更大。同伴与歌手的熟悉程度也是降低唱歌率的一个因素。歌手与女性越熟悉，他就越常在她面前唱歌，而男性则相反——陌生人唱歌比熟悉的同伴更常见。配对的形成降低了歌手对与同种动物近距离相关的抑制因素的敏感性。与同种人的简单视觉和听觉接触不足以限制无向歌唱，但激烈、近距离的互动似乎是必要的。据推测，无向歌唱是用来吸引雌性进行配对或配对外交配，但雄性同伴和/或配偶的近距离阻碍了这一点。然而，在竞争性择偶实验中，雄性发出无向鸣叫的频率与配对形成的顺序之间没有显着相关性。这表明，无向歌唱对于最终选择配偶来说可能并不重要，但它仍然可能是配对开始时的有用提示。
Undirected Song is commonly performed in wild and captive zebra finches and is typically given by males partly isolated from other members of the flock or colony. It has no territorial function nor it is used during precoital courtship; its frequency varies strongly among individuals. However, its rate of performance is severely limited by the close proximity of conspecifics, and this study investigated what social factors are responsible for this constraint in first-generation offspring of wild-caught zebra finches. The close presence of females caused a greater reduction in singing than did that of males. Familiarity between companions and the singer was also a factor that reduced the rate of singing. The more familiar the singer became with a female the more often he would sing in her presence, whereas the opposite occurred with males - singing was more prevalent with strangers than with familiar companions. Pair formation reduced a singer's sensitivity to inhibitory factors associated with the close proximity of conspecifics. Simple visual and auditory contact with a conspecific was not sufficient to constrain Undirected Singing, but intense, close range interactions appear to be necessary. It is hypothesised that Undirected Singing is used to attract females for pair formation or extra-pair mating, but the close proximity of male companions and/or the mate hampers this. However, in a competitive mate choice experiment there was no significant correlation between the rate at which a male gave Undirected Song and order of the pair formation. This suggests that Undirected Singing may nor be crucial in the ultimate choice of a mate, but it may still be a useful cue at the outset of pair formation.