Faecal Pellets of the Endangered Amami Rabbit (Pentalagus furnessi) as an Allochthonous Resource for Benthic Macroinvertebrates in a Forest Stream in Amami-Oshima Island, Japan

IF 2.5 3区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Aquatic Conservation-Marine and Freshwater Ecosystems Pub Date : 2025-02-26 DOI:10.1002/aqc.70098

Shinji Takahashi, Shin-ichiro Abe, Yasuhiro Takemon, Kei'ichiro Iguchi

引用次数: 0

Abstract

The endangered Amami rabbit (Pentalagus furnessi), endemic to two Japanese subtropical islands, has a habit of egesting faeces on streambanks in their habitats. We hypothesized that rabbit faeces transported into streams are consumed by aquatic animals. Underwater behavioural observations using time-lapse photography showed that decapod crustaceans foraged on rabbit faeces introduced experimentally into a forest stream on Amami-Oshima Island. From in situ samples, stable isotopic analysis showed mean contributions of rabbit faeces to diets of benthic macroinvertebrates ranged from 12% to 66%. This study suggests that rabbit faeces form an allochthonous resource unique to this insular stream ecosystem.

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濒危奄美兔（Pentalagus furnessi）的粪便是日本奄美大岛森林溪流底栖大型无脊椎动物的同源资源

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来源期刊

Aquatic Conservation-Marine and Freshwater Ecosystems 环境科学-海洋与淡水生物学

CiteScore

5.50

自引率

4.20%

发文量

143

审稿时长

18-36 weeks

期刊介绍： Aquatic Conservation: Marine and Freshwater Ecosystems is an international journal dedicated to publishing original papers that relate specifically to freshwater, brackish or marine habitats and encouraging work that spans these ecosystems. This journal provides a forum in which all aspects of the conservation of aquatic biological resources can be presented and discussed, enabling greater cooperation and efficiency in solving problems in aquatic resource conservation.