城市地区僧鹦鹉Myiopsitta monachus雏鸟的饮食:一项使用稳定同位素的研究

IF 0.7 4区生物学 Q3 ORNITHOLOGY

Bird Study Pub Date : 2021-10-02 DOI:10.1080/00063657.2022.2113856

D. Mazzoni, J. Pascual, L. Arroyo, T. Montalvo, J. González‐Solís, J. C. Senar

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引用次数: 0

摘要

摘要:先前在巴塞罗那和其他城市的观察表明，成年僧侣长尾小鹦鹉(Myiopsitta monachus)摄入的食物中约有40%来自人类。在这里，我们展示了这种食物来源也用于喂养雏鸟。目的:量化巴塞罗那非本地物种和尚长尾小鹦鹉雏鸟饮食中人为食物的比例。方法:对在巴塞罗那市区采集的僧袍长尾小鹦鹉雏鸟羽毛中13C和15N的稳定同位素进行了分析。我们还对僧侣长尾小鹦鹉摄取的潜在食物来源进行了采样，利用贝叶斯混合模型和MixSIAR重建了雏鸟的饮食。结果:人为食物占雏鸟日粮的近30%。结论:由于食物供应是调节种群增长的主要因素，我们建议教育公众减少对该物种的食物供应，最终限制其种群增长。

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The diet of Monk Parakeet Myiopsitta monachus nestlings in an urban area: a study using stable isotopes

ABSTRACT Capsule: Previous observations in Barcelona and other cities showed that approximately 40% of the food ingested by adult Monk Parakeets Myiopsitta monachus is of anthropogenic origin. Here we show that this type of food source is also used for feeding nestlings. Aims: To quantify the proportion of anthropogenic food within the diet of nestling Monk Parakeets, a non-native species in Barcelona. Methods: We analysed stable isotopes of 13C and 15N in feathers of Monk Parakeet nestlings collected in the Barcelona city area. We also sampled potential food sources ingested by Monk Parakeets to reconstruct the nestling diet using Bayesian mixing models with MixSIAR. Results: Almost 30% of the nestlings’ diet was composed of anthropogenic food. Conclusions: Since food availability is a major factor regulating population growth, we propose educating the general public to reduce the food supply for the species and ultimately limit its population growth.

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来源期刊

Bird Study 生物-鸟类学

CiteScore

1.60

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Bird Study publishes high quality papers relevant to the sphere of interest of the British Trust for Ornithology: broadly defined as field ornithology; especially when related to evidence-based bird conservation. Papers are especially welcome on: patterns of distribution and abundance, movements, habitat preferences, developing field census methods, ringing and other techniques for marking and tracking birds. Bird Study concentrates on birds that occur in the Western Palearctic. This includes research on their biology outside of the Western Palearctic, for example on wintering grounds in Africa. Bird Study also welcomes papers from any part of the world if they are of general interest to the broad areas of investigation outlined above. Bird Study publishes the following types of articles: -Original research papers of any length -Short original research papers (less than 2500 words in length) -Scientific reviews -Forum articles covering general ornithological issues, including non-scientific ones -Short feedback articles that make scientific criticisms of papers published recently in the Journal.