Overlap in reproductive phenology increases the likelihood of cavity nest usurpation by invasive species in a tropical city

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS
Joshua M. Diamond, M. Ross
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引用次数: 6

Abstract

ABSTRACT Multiple invasive cavity-nesting bird species can be present in a nest web, the network linking birds using cavities. We investigated the nest preferences and breeding phenologies of the cavity-nesting guild in the region surrounding Miami, Florida, USA, where invasive starlings, mynas, and parrots potentially usurp cavities from native woodpeckers and secondary cavity-nesters. We asked if the timing of reproduction determines which invasive species will usurp cavities from native birds with similar nest preferences. Nest usurpations between European Starlings (Sturnus vulgaris) and the woodpecker species present in Miami is well documented, but we predicted that a recently arrived sturnid species and introduced psittacids would also usurp nests. European Starlings had the largest breeding population of any species in our nest web, breeding during the peak of nesting season, and usurped the largest number of active nest cavities. We found that a small population of Common Mynas (Acridotheres tristis) usurped nests, sharing the peak-season nesting period with starlings and native woodpeckers. Parrots bred later than we expected, avoiding nest-site overlap with similarly large native birds that use cavities with similar characteristics. Parrots did not usurp any active nest cavities from native birds. Our results demonstrate how to use analysis of cavity characteristics and reproductive timing to evaluate threats to a cavity nest web posed by multiple invasive species. Common Myna currently usurp few nests; if they increase greatly in population, they could pose a problem for native cavity-nesters.
繁殖表型的重叠增加了热带城市入侵物种侵占巢穴的可能性
多个入侵腔巢鸟类物种可以存在于一个巢网中,这是一个利用腔将鸟类连接起来的网络。在美国佛罗里达州迈阿密周边地区,入侵椋鸟、八哥和鹦鹉可能篡夺本地啄木鸟和次级洞巢鸟的巢巢,我们调查了洞巢行会的巢偏好和繁殖物候。我们的问题是,繁殖的时间是否决定了哪些入侵物种会从具有相似筑巢偏好的本地鸟类那里篡夺空洞。欧洲椋鸟(Sturnus vulgaris)和啄木鸟之间的鸟巢侵占已经在迈阿密得到了很好的记录,但我们预测最近到来的一种鲟鱼和引入的鹦鹉也会侵占鸟巢。在我们的巢网中,欧洲椋鸟的繁殖数量是所有物种中最多的,它们在筑巢季节的高峰期繁殖,并且占据了最多的活跃巢腔。我们发现,一小群普通八哥(acridoses tristis)篡夺了鸟巢,与椋鸟和本地啄木鸟分享了筑巢的高峰期。鹦鹉的繁殖比我们预期的要晚,避免了与使用具有相似特征的洞穴的类似大型本土鸟类的巢穴重叠。鹦鹉没有从本地鸟类那里抢夺任何活跃的巢腔。我们的研究结果展示了如何利用腔体特征和繁殖时间分析来评估多种入侵物种对腔体巢网构成的威胁。常见的八哥目前篡夺了一些巢穴;如果它们的数量大幅增加,它们可能会给本地的洞巢鸟带来问题。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
ACS Applied Bio Materials
ACS Applied Bio Materials Chemistry-Chemistry (all)
CiteScore
9.40
自引率
2.10%
发文量
464
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