Quantification of sex-related diet composition by free-ranging mountain hares ( Lepus timidus )

IF 1.8 4区生物学 Q1 ZOOLOGY

Hystrix-Italian Journal of Mammalogy Pub Date : 2020-06-05 DOI:10.4404/HYSTRIX-00271-2019

M. Rehnus, K. Bollmann

引用次数: 1

Abstract

Variability in habitat use influences animal distribution and can lead to different life-histories across sexes and individuals. Such differences are frequently observed in species with sexual dimorphism, but less known in monomorphic species. In this study, we investigated sex-related differences in the diet of the mountain hare (Lepus timidus) — a monomorphic species — during the mating season (spring) and the post-reproductive period (autumn). We investigated the diet composition by the microhistological analysis of pellets of 18 individuals (8 males, 10 females) which were surveyed from 2015 to 2017 by a non-invasive genetic population monitoring in the Swiss National Park. We found significant differences in diet composition between seasons and sexes. Females consumed a higher proportion of graminoids in the mating season, probably due to higher energetic needs at that time of the year. Our study shows that further attention should be given to sex-specific diet composition of monomorphic species.

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散养山兔性别相关饲粮组成的定量分析

生境利用的变异性影响动物分布，并可能导致不同性别和个体的不同生活史。这种差异经常在两性二态的物种中观察到，但在单态物种中鲜为人知。在本研究中，我们研究了一种单态物种山兔(Lepus timidus)在交配季节(春季)和繁殖后时期(秋季)饮食的性别差异。我们通过对2015年至2017年在瑞士国家公园进行的非侵入性遗传种群监测中调查的18只个体(8只雄性，10只雌性)的颗粒进行显微组织学分析，研究了饮食组成。我们发现，不同季节和性别的饮食构成存在显著差异。雌性在交配季节消耗的谷粒素比例较高，可能是由于在一年中的这个时候能量需求较高。我们的研究表明，应进一步关注单态物种的性别特异性饮食组成。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Hystrix-Italian Journal of Mammalogy 生物-动物学

CiteScore

2.40

自引率

0.00%

发文量

审稿时长

21 weeks

期刊介绍： Hystrix the Italian Journal of Mammalogy accepts papers on original research in basic and applied mammalogy on fossil and living mammals. The Journal is published both in paper and electronic "online first" format. Manuscripts can be published as full papers or short notes, as well as reviews on methods or theoretical issues related to mammals. Commentaries can also be occasionally accepted, under the approval by the Editor in Chief. Investigations of local or regional interest, new data about species distribution and range extensions or confirmatory research can be considered only when they have significant implications. Such studies should preferably be submitted as short notes. Manuscripts bearing only a local interest will not be accepted. Full papers have no limits in length as well as in figure and table number and are abstracted in English. Authors are encouraged to add supplemental material in form of colour figures, original datasets and/or computer program source code. Supplemental material and colour figures will appear only on the electronic edition. Short notes must be about 16000 characters long (including title, author names and affiliations, abstract and references), and do not include supplemental material. They are abstracted in English. Proceedings of symposia, meetings and/or workshops, and technical reports can be published as special supplements to regular issues, under the approval by the Editor in Chief and the Associate Editors. There are no page charges.