扩大濒危澳大利亚溪灯鱼(Mordacia praecox)的已知分布范围和实际保护问题

IF 2.6 2区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION Endangered Species Research Pub Date : 2024-04-25 DOI:10.3354/esr01319
Luke Carpenter-Bundhoo, David B. Moffatt
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引用次数: 0

摘要

摘要:寄生和非寄生灯鱼 "物种对 "是全球范围内分类不确定性的持续来源。南半球唯一的非寄生性灯鱼--濒危澳大利亚溪灯鱼(Mordacia praecox),自 1968 年被描述以来,其地理范围一直模糊不清。该物种的保护工作十分复杂,因为它目前在遗传学上,而且在其生命周期的大部分时间里,在形态上都无法与其寄生配对物种短头灯鱼(Mordax)区分开来,后者的保护状况为最不关注。由于难以识别,加上其行为隐秘,人们对该物种的生态学和分布情况知之甚少。这对物种的同域分布使情况更加复杂。我们利用偶然捕获、有针对性的调查和公开访问的野生动物信息数据库记录,描述了在澳大利亚热带和亚热带地区发现和确认的溪鳗种群,以及澳大利亚溪鳗已知地理范围向北延伸的1400公里(5倍)。在澳大利亚东部 6 个热带和亚热带沿海流域的调查中,我们发现了所有生活史阶段的非寄生性灯鱼。我们还强调了与保护这种隐蔽且鲜为人知的物种相关的主要问题,并讨论了可能采取的保护措施,这些措施至少可以部分改善这些问题。
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Expanding the known range and practical conservation issues of the Endangered Australian brook lamprey Mordacia praecox
ABSTRACT: Parasitic and non-parasitic lamprey ‘species pairs’ are an ongoing source of taxonomic uncertainty globally. The geographic range of the only non-parasitic lamprey in the Southern Hemisphere, the Endangered Australian brook lamprey Mordacia praecox, has remained ambiguous since its description in 1968. The conservation of this species is complex as it is presently genetically and, for most of its lifecycle, morphologically indistinguishable from its parasitic paired species, short-headed lamprey M. mordax, the conservation status of which is Least Concern. Difficulty in their identification, coupled with their cryptic behaviour, has resulted in limited knowledge of the species’ ecology and distribution. This is further complicated by the sympatric geographic ranges of the paired species. Using incidental captures, targeted surveys, and open-access wildlife information database records, we describe the discovery and confirmation of lamprey populations from tropical and sub-tropical Australia and the associated ∼1400 km (5-fold) northward extension of the known geographic range of Australian brook lamprey. Surveys yielded non-parasitic lampreys of all life-history stages across 6 tropical and sub-tropical coastal watersheds of eastern Australia. We also highlight major issues associated with the conservation of a cryptic and poorly understood species and discuss potential conservation actions that may, at least in part, ameliorate such issues.
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来源期刊
Endangered Species Research
Endangered Species Research BIODIVERSITY CONSERVATION-
CiteScore
5.50
自引率
6.50%
发文量
38
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.
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