Conspecific-only experience during development reduces the strength of heterospecific song discrimination in Zebra Finches (Taeniopygia guttata): a test of the optimal acceptance threshold hypothesis
Conspecific-only experience during development reduces the strength of heterospecific song discrimination in Zebra Finches (Taeniopygia guttata): a test of the optimal acceptance threshold hypothesis
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DOI：
10.1007/s10336-009-0466-3
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发表时间：
2010-04-01
影响因子：
1.3
通讯作者：
Hauber, Mark E.
中科院分区：
文献类型：
--
作者：
Campbell, Dana L. M.;Hauber, Mark E.
同种异体在发育过程中为亲本鸟类物种识别提供了最可靠的感官线索。斑胸草雀（Taeniopygia guttata）是一种两性二态模式物种，用于研究物种识别的行为线索和神经生物学基础。关于声学同种线索，理论预测，暴露于同种和异种发声以及其他环境声音会导致更准确的听觉物种歧视，因为在发育过程中，不同的声音线索会使最佳同种接受阈值更具限制性，从而产生更少的接受错误。我们测试了在室外环境中饲养的雌斑胸草雀和雄斑胸草雀（对照组）以及在室内环境中饲养的雌斑胸草雀和雄斑胸草雀（受限制）的行为偏好，并播放了斑胸草雀、与孟加拉斑胸草雀（Lonchura striata vara domestica）和孟加拉斑胸草雀交叉饲养的斑胸草雀的歌曲。几项行为测量显示，性别差异最小，但对照组受试者更喜欢同种雀的叫声，而不是交叉培育的斑胸草雀或孟加拉雀的叫声。相比之下，受限斑胸草雀在行为上对三种鸣声类型没有区别。这些结果支持了在限制处理中物种接受阈值的变化导致更多接受错误的概念。我们讨论了未来的工作，以测试在这个重要的实验室模型物种的社会识别研究中，暴露于同种和异种的不同声音线索在歌曲感知的个体发生中的作用。
Conspecifics during development provide the most reliable sensory cues for species recognition in parental bird species. The Zebra Finch (Taeniopygia guttata) is a sexually dimorphic model species used for investigations of the behavioural cues and neurobiological substrates of species recognition. Regarding acoustic conspecific cues, theory predicts that exposure to both con- and heterospecific vocalisations and other environmental sounds results in more accurate auditory species discrimination, because diverse vocal cues during development shift optimal conspecific acceptance thresholds to be more restrictive to yield fewer acceptance errors. We tested the behavioural preferences of female and male Zebra Finches raised in an outdoor environment (Control) and female and male Zebra Finches reared in an indoor colony with exposure to Zebra Finches only (Restricted), to playbacks of songs of Zebra Finches, Zebra Finches cross-fostered by Bengalese Finches (Lonchura striata var. domestica), and Bengalese Finches. Several behavioural measures revealed minimal sexual dimorphism in discrimination but showed that Control subjects preferred conspecifics' songs over either the songs of cross-fostered Zebra Finches or Bengalese Finches. Restricted Zebra Finches in contrast did not discriminate behaviourally between the three song types. These results support the concept of a shift in the species acceptance threshold in the restricted treatment resulting in more acceptance errors. We discuss future work to test the role of exposure to diverse vocal cues of both con- and heterospecifics in the ontogeny of song perception in this important laboratory model species for social recognition research.