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首页> 外文期刊>Zoologia (Curitiba) >Análise comparativa da dieta de quatro espécies de cucos (Aves: Cuculidae), no sul do Brasil
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Análise comparativa da dieta de quatro espécies de cucos (Aves: Cuculidae), no sul do Brasil

机译：巴西南部四种杜鹃（Birds：Cuculidae）饮食的比较分析

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摘要

We studied stomachs contents of 50 specimens of four common cuckoo species (Cuculidae) from southern Brazil: Guira guira (Gmelin, 1788) (n = 21), Coccyzus melacoryphus (Vieillot, 1817) (n = 8), Crotophaga ani (Linnaeus, 1758) (n = 11), and Piaya cayana (Linnaeus, 1766) (n = 10). We measured stomach volume and prey were identified and quantified based in their dimensions. The size of the prey was associated with bill width and body mass. Diet items were analyzed and identified to the lowest possible taxonomic level, based on literature, scientific collection data, and specialists. The diet of the four species was composed by 100% animal species, with invertebrate dominance. Only in G. guira stomachs the presence of vertebrates was observed more than once (amphibian, reptile, and bird). C. ani, which had similar diet, ingested a large number of Arachnida and Orthoptera. Piaya cayana ate mostly Hemiptera. The predominance of caterpillars (Lepidoptera), suggested in the literature was not observed in the diet of C. melacoryphus. There was a statistically significant difference in bill width and body mass among the bird species, and there was no correlation between bill width and the proportion of medium and large-sized prey.
机译：我们研究了来自巴西南部的四种常见杜鹃物种（Cuculidae）的50个标本的胃内容物：Guira guira（Gmelin，1788）（n = 21），Coccyzus melacoryphus（Vieillot，1817）（n = 8），Crotophaga ani（Linnaeus， 1758）（n = 11）和Piaya cayana（Linnaeus，1766）（n = 10）。我们测量了胃的体积，并根据它们的大小对猎物进行了识别和量化。猎物的大小与钞票的宽度和体重有关。根据文献，科学的采集数据和专家，对饮食项目进行了分析，并确定了最低分类标准。四种动物的饮食由100％动物组成，其中无脊椎动物占主导地位。仅在吉拉吉拉羚羊胃中观察到脊椎动物的存在不止一次（两栖动物，爬行动物和鸟类）。饮食相似的C. ani摄入了大量的蛛形纲和直翅目。 Piaya cayana主要吃半翅目。文献中提示，毛虫（鳞翅目）的优势在淡水梭菌的饮食中未观察到。在鸟类中，票据宽度和体重有统计学意义的差异，票据宽度与中型和大型猎物的比例之间没有相关性。

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