日本北部野生日本貂的摄食策略。

IF 0.9 4区 生物学 Q3 ZOOLOGY
Sota Abe, Yamato Tsuji
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引用次数: 0

摘要

Mustelids是杂食性果食性动物,表现出短暂的饮食转换和专门性;然而,潜在的机制尚不清楚。通过研究日本貂(Martes melampus)的饮食组成与主要食物(水果、哺乳动物和节肢动物)丰度之间的关系,研究了日本貂(Martes melampus)在日本北部的摄食策略。在研究期间(2020-2022年),粪便样本中水果的比例(按点框法面积百分比计算为65%)远高于节肢动物(13%,春季比例较高)和哺乳动物(11%,夏季比例较高)。当节肢动物和哺乳动物的丰度较低时,果实在貂的饮食中所占的比例增加,这表明日本貂在依赖果实的同时是机会性的捕食者。与北方地区其他依赖小型哺乳动物的貂不同,日本貂采用了一种饮食转换策略,更喜欢吃应季水果。貂类食物习惯的长期变化表明,貂类的生态作用,如控制猎物数量和种子传播媒介,可能会发生短暂的变化;因此,监测食物环境对于解决森林生态系统中种间相互作用是必要的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Feeding Strategy of Wild Japanese Martens (Martes melampus) in Northern Japan.

Mustelids are omnivorous-frugivorous and exhibit temporal dietary switching and specialism; however, the underlying mechanisms are unclear. We studied the feeding strategy of the Japanese marten (Martes melampus) in northern Japan by examining the relationship between dietary composition and abundance of main dietary items (fruits, mammals, and arthropods). The percentage of fruits in fecal samples over the study period (2020-2022) was much higher (65% in terms of the area percentage of the point-frame method) than that of arthropods (13%, with a higher proportion in spring) and mammals (11%, with a higher proportion in summer). The percentage of fruits in marten diets increased when abundance of arthropods and mammals was lower, which implies that Japanese martens are opportunistic feeders while being fruit-dependent. Different from other Martes species in boreal regions that depend more on small mammals, Japanese martens use a dietary switching strategy and prefer to eat fruits when they are seasonally available. The long-term variation in marten food habits implies that the ecological role of martens, such as controlling populations of prey animals and seed dispersal agents, can change transiently; therefore, monitoring the food environment is necessary to address inter-specific interactions in forest ecosystems.

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来源期刊
Zoological Science
Zoological Science 生物-动物学
CiteScore
1.70
自引率
11.10%
发文量
59
审稿时长
1 months
期刊介绍: Zoological Science is published by the Zoological Society of Japan and devoted to publication of original articles, reviews and editorials that cover the broad field of zoology. The journal was founded in 1984 as a result of the consolidation of Zoological Magazine (1888–1983) and Annotationes Zoologicae Japonenses (1897–1983), the former official journals of the Zoological Society of Japan. Each annual volume consists of six regular issues, one every two months.
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