阿尔巴尼亚南部繁殖后栖息地的小红隼的饮食

A. Krištín, T. Bělka, D. Horal, T. Bino
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引用次数: 0

摘要

小红隼是一种食虫的迁徙隼,在繁殖后期经常在南欧的公共栖息地栖息。利用2017年8月收集的阿尔巴尼亚南部两个繁殖后栖息地的颗粒分析,我们在两个地点的110个颗粒中确定了1539种猎物,属于大约58种猎物,20科和7目。无脊椎动物是食性谱的主要组成部分(PNI = 99.8%, PFI = 100%)。无脊椎动物猎物的体型在8到62毫米之间(平均28.1毫米)。蟋蟀科和蝗科是最丰富和最频繁的猎物群(PNI = 33%)。48.6%, PFI = 97%。94%)。在灌木蟋蟀科中,我们可以鉴定出Tettigonia属、Decticus属、Platycleis属、Isophya属和Metrioptera属。在食物中鉴定出的蝗虫种类中,有飞蝗属、狭尾蝇属和蝗属。鸟类和哺乳动物只是偶尔在颗粒中被发现。两个研究点的猎物组成相当相似,但在同一时期,Jorgucat遗址的蝗虫(Acrididae)和Mollas遗址的灌木蟋蟀(Tettigonioidea)更为丰富。在Mollas区,甲虫科和其他甲虫(鞘翅目其他)的数量和频率高于Jorgucat区,蜘蛛的数量和频率高于Jorgucat区。这些结果表明,在某些地区食物供应中,高丰度的直翅鸟和甲虫是阿尔巴尼亚小红隼选择和稳定占据这些大规模公共栖息地的主要原因。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Diet of the lesser kestrel Falco naumanni at post-breeding roosts in southern Albania
Abstract The lesser kestrel is an insectivorous and migratory falcon species, frequently using communal roosts in the post-breeding period in southern Europe. Using pellet analysis from two post-breeding roosting sites in southern Albania collected in August 2017, we identified 1539 prey items belonging to approximately 58 prey species, 20 families and 7 orders in 110 pellets from two sites. Invertebrates made up the major part of the diet spectrum (PNI = 99.8 %, PFI = 100 %). Invertebrate prey body size varied between 8 and 62 mm (mean 28.1 mm). Bush-crickets (Tettigoniidae) and locusts (Acrididae) were the most abundant and frequent prey groups (PNI = 33 % resp. 48.6 % and PFI = 97 % resp. 94 %). Within the bush-cricket family we could identify the species of genera Tettigonia, Decticus, Platycleis, Isophya and Metrioptera. The species of genera Calliptamus, Stenobothrus and Locusta belonged among the locust species identified in the food. Birds and mammals were found in pellets only occasionally. The prey composition was rather similar at both studied sites, while locusts (Acrididae) were more abundant at the Jorgucat site and bush-crickets (Tettigonioidea) at the Mollas site in the same time. Prey groups Scarabeidae beetles and other beetles (Coleoptera other) were more abundant and frequent at Mollas than at Jorgucat, and spiders were more frequent at Jorgucat. These results suggest that the high abundance of orthopterans and beetles in the food supply in certain localities is the main reason for selection and stable occupancy of these massive communal roosting sites by lesser kestrels in Albania.
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来源期刊
CiteScore
0.80
自引率
0.00%
发文量
0
审稿时长
12 weeks
期刊介绍: Journal for science, research and conservation on birds of prey and owls. Slovak Raptor Journal is issued generally annually and publishes original papers, reviews, short notes and other articles focusing on birds of prey and owls. All articles are published in English.
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