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Captive house sparrows (Passer domesticus) show little evidence of seasonality of neophobia responses.
Journal of Experimental Zoology Part A ( IF 1.9 ) Pub Date : 2020-04-29 , DOI: 10.1002/jez.2365
Clare P Fischer 1 , Brenna M G Gormally 1 , L Michael Romero 1
Affiliation  

Neophobia is a behavior characterized by a reluctance to approach novel objects. We measured neophobia in captive wild house sparrows (Passer domesticus) by comparing the time it took for hungry birds to approach their normal food dish compared to one that had been modified with a novel object. We tested the behavior of animals captured at different times of year to test for seasonal variation in neophobia. One group of birds tested in July approached their food dishes much more quickly than all other birds (a matter of seconds rather than minutes whether or not there was a novel object), a response that was not repeated in a subsequent July. When this possible outlier group was removed from the analysis, approach times to novel objects were not affected by season. However, animals captured and tested in October had a stronger motivation to feed (i.e., they approached unmodified food dishes faster) than birds captured at other times of the year. If we define “neophobia” as an increase in latency to approach a novel versus an unmodified food dish, then there is little evidence for underlying seasonal variation in risk assessment, although a general motivation to feed does show a seasonal pattern.

中文翻译:

圈养麻雀(Passer domesticus)几乎没有新恐惧症反应的季节性证据。

新恐惧症是一种以不愿接近新颖物体为特征的行为。我们测量了圈养的野生麻雀(Passer domesticus),通过比较饥饿的鸟类接近正常食物所用的时间与用新物体修改过的时间所花费的时间。我们测试了一年中不同时间捕获的动物的行为,以测试新恐惧症的季节性变化。七月份测试的一组鸟类比其他所有鸟类更快地接近食物(无论是否有新物体,几秒钟而不是几分钟),这种反应在随后的7月没有重复。当从分析中删除该可能的异常组时,到达新对象的时间不会受到季节的影响。但是,与一年中其他时间捕获的鸟类相比,十月份捕获和测试的动物具有更强的觅食动机(即,他们更快地接触了未经修饰的食物)。
更新日期:2020-04-29
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