Notable abundance of two Critically Endangered elasmobranch fishes near an area of intensive coastal development in the Arabian Gulf

IF 2.6 2区环境科学与生态学 Q2 BIODIVERSITY CONSERVATION

Endangered Species Research Pub Date : 2024-02-01 DOI:10.3354/esr01290

Shamsa Al Hameli, Stephan Bruns, Aaron C. Henderson

引用次数: 0

Abstract

ABSTRACT: The Pakistan whipray Maculabatis arabica and the halavi guitarfish Glaucostegus halavi are Critically Endangered elasmobranch species that are endemic to areas of the northern Indian Ocean. An unexpectedly high abundance of both species in a shallow, nearshore area of Abu Dhabi, United Arab Emirates, is described here. Both species were found to utilise this area year-round, although seasonal fluctuations in abundance were evident. Male and female G. halavi were encountered at sizes that suggest a mix of immature and mature individuals; however, all except 1 M. arabica were female, indicating sexual segregation in this species. Further studies are required to learn more about the importance of the study area in the life history of these Critically Endangered species, but it is a matter of considerable concern that the wider Khor Faridah area is currently undergoing intensive coastal development.

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阿拉伯湾沿海密集发展区附近两种极度濒危鞘亚目鱼类的显著丰度

摘要：巴基斯坦鞭鱼（Maculabatis arabica）和哈拉维吉他鱼（Glaucostegus halavi）是印度洋北部地区特有的极度濒危鞘鳃类物种。本文描述了这两个物种在阿拉伯联合酋长国阿布扎比近岸浅海区域出人意料的高丰度。尽管丰度的季节性波动很明显，但发现这两个物种全年都在这一区域活动。雄性和雌性 G. halavi 的个体大小表明，未成熟个体和成熟个体混杂在一起；然而，除 1 条 M. arabica 外，其余均为雌性，这表明该物种存在性分离现象。要进一步了解研究区域在这些极度濒危物种生活史中的重要性，还需要进一步的研究，但令人相当担忧的是，更广泛的霍尔法里达地区目前正在进行密集的沿海开发。

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

Endangered Species Research BIODIVERSITY CONSERVATION-

CiteScore

5.50

自引率

6.50%

发文量

审稿时长

31 weeks

期刊介绍： ESR is international and interdisciplinary. It covers all endangered forms of life on Earth, the threats faced by species and their habitats and the necessary steps that must be undertaken to ensure their conservation. ESR publishes high quality contributions reporting research on all species (and habitats) of conservation concern, whether they be classified as Near Threatened or Threatened (Endangered or Vulnerable) by the International Union for the Conservation of Nature and Natural Resources (IUCN) or highlighted as part of national or regional conservation strategies. Submissions on all aspects of conservation science are welcome.