Population status, distribution and seasonal range of Grevy’s zebra (Equus grevyi) in a protected savannah area

IF 0.6 4区 生物学 Q4 ZOOLOGY African Zoology Pub Date : 2023-11-07 DOI:10.1080/15627020.2023.2257246
Tolera Abirham, Afework Bekele, Mesele Yihune
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Abstract

AbstractThe genus Equus comprises six species and 22 subspecies. Ethiopia is the only country in the world that has all three surviving species of zebra. The population status, structure, and seasonal range of Grevy’s zebra (Equus grevyi) were studied in the Hallaydeghe Asebot Protected Area (HAPA), southeast Ethiopia, using line transects and silent detection methods. Data were collected from 2021 to 2022 covering both the wet and dry seasons. The seasonal range of Grevy’s zebra was studied using the minimum convex polygon method. We counted 89 and 61 Grevy’s zebra during the wet and dry seasons, respectively. The total population size was estimated to be 75 individuals with a 95% confidence interval of 60–90 individuals. The adult to sub-adult ratio was 3.1:1.0 during the wet season and 4:1 during the dry season. The sex ratio of adult female to adult male was 5:1 during the wet season and 4:1 during the dry season. The seasonal range of the species in the HAPA was 477 km2 (n = 89) during the wet season and 711 km2 (n = 61) during the dry season. During the dry season Grevy’s zebra move out of the protected area to the Blen hot spring and its associated wetlands for green grazing and water. Hence, further study is needed on the possibility of incorporating the Blen hot spring and its associated wetlands into the protected area to promote the sustainable conservation of the species in the HAPA.Keywords: age structureanimal movementconservationzebra populationsprotected areaseasonssex structure
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草原保护区灰斑斑马种群现状、分布及季节分布
摘要马属有6种22亚种。埃塞俄比亚是世界上唯一一个拥有所有三种斑马的国家。采用样线法和无声检测法对埃塞俄比亚东南部Hallaydeghe Asebot保护区(HAPA)的灰斑斑马(Equus grevyi)种群状况、种群结构和季节分布进行了研究。数据收集于2021年至2022年,涵盖旱季和雨季。采用最小凸多边形法研究了灰斑斑马的季节变化范围。在旱季和雨季,我们分别统计了89头和61头灰斑斑马。总种群规模估计为75只,95%置信区间为60-90只。湿季成虫与亚成虫的比值为3.1:1.0,旱季为4:1。雨季成虫雌雄性别比为5:1,旱季为4:1。HAPA物种的季节分布范围在雨季为477 km2 (n = 89),在旱季为711 km2 (n = 61)。在旱季,灰斑斑马从保护区迁移到Blen温泉及其相关的湿地,以获得绿色放牧和水。因此,需要进一步研究将勃伦温泉及其伴生湿地纳入保护区的可能性,以促进HAPA中物种的可持续保护。关键词:年龄结构动物运动保护斑马种群保护区季节性别结构
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来源期刊
African Zoology
African Zoology 生物-动物学
CiteScore
2.60
自引率
9.10%
发文量
18
审稿时长
>12 weeks
期刊介绍: African Zoology , a peer-reviewed research journal, publishes original scientific contributions and critical reviews that focus principally on African fauna in terrestrial, freshwater, and marine ecosystems. Research from other regions that advances practical and theoretical aspects of zoology will be considered. Rigorous question-driven research in all aspects of zoology will take precedence over descriptive research. The Journal publishes full-length papers, critical reviews, short communications, letters to the editors as well as book reviews. Contributions based on purely observational, descriptive or anecdotal data will not be considered. The Journal is produced by NISC in association with the Zoological Society of South Africa (ZSSA). Acceptance of papers is the responsibility of the Editors-in-Chief in consultation with the Editors and members of the Editorial Advisory Board. All views expressed are those of the author and not necessarily those of the Editors or the Department.
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