日本东部埼玉市城市浣熊犬饮食的季节变化

IF 0.8 4区 生物学 Q3 ZOOLOGY Mammal Study Pub Date : 2023-06-23 DOI:10.3106/ms2023-0001
S. Takatsuki, Kunio Kobayashi
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引用次数: 2

摘要

摘要我们在日本埼玉的一所城市高中调查了貉的饮食习惯。书房周围是居民区,但毗邻一个池塘。粪便样本(n=126)于2022年1月至12月采集,并使用点框法进行分析。冬季粪便成分多样,包括树叶、果实、种子和人工材料。春季,日本蟾蜍(Bufo japonicus formosus)和昆虫的比例增加,而夏季,杨梅(Celtis sinensis)果实、昆虫和红沼泽小龙虾(Procambarus clarkii)的比例增加。秋季以杨梅和木豆树果实为主。蟾蜍和沼泽小龙虾的食用表明,貉是机会主义的进食者。我们只从十个物种中找到了种子,其中包括五种野生植物的果实;这些数字低于此前在同一地区农村地区报告的数字,在那里,树莓(Rubus spp.)、桑椹(Morus spp。回收了各种各样的人造材料,但数量很少。这些结果反映了研究区域的特征,该区域是一个城市化环境,树木有限,毗邻池塘。
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Seasonal Changes in the Diet of Urban Raccoon Dogs in Saitama, Eastern Japan
Abstract. We examined the food habits of raccoon dogs (Nyctereutes procyonoides) at an urban high school in Saitama, Japan. The study place is surrounded by residential areas but is adjacent to a pond. Fecal samples (n = 126) were collected from January to December 2022 and analyzed using the point frame method. Fecal composition was diverse in winter, including leaves, fruits, seeds, and artificial materials. In spring, the proportion of Japanese toads (Bufo japonicus formosus) and insects increased, whereas in summer, proportion of hackberry (Celtis sinensis) fruits, insects, and red swamp crayfish (Procambarus clarkii) increased. In autumn, fruits of hackberry and muku tree (Aphananthe aspera) were predominant. Consumption of toads and swamp crayfish suggests that the raccoon dogs are opportunistic feeders. We recovered seeds from only ten species, including fruits from five wild plants; these numbers were lower than those reported previously in rural areas of the same district, where raspberries (Rubus spp.), mulberries (Morus spp.), and Eurya japonica have often been recovered at great proportions. A wide range of artificial materials were recovered but in low quantities. These results reflect the characteristics of the study area, which is an urbanized environment with limited trees and adjacent to a pond.
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来源期刊
Mammal Study
Mammal Study ZOOLOGY-
CiteScore
1.70
自引率
20.00%
发文量
23
审稿时长
>12 weeks
期刊介绍: Mammal Study is the official journal of the Mammal Society of Japan. It publishes original articles, short communications, and reviews on all aspects of mammalogy quarterly, written in English.
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