Lessons learned from the use of rotenone to eradicate feral fish in two irrigation lakes in Western Australia

IF 1.9 4区环境科学与生态学 Q3 ECOLOGY

Ecological Management & Restoration Pub Date : 2022-09-18 DOI:10.1111/emr.12561

Graham G. Thompson, Scott A. Thompson

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Abstract

An eradication program using rotenone was implemented primarily targeting a localised population of the feral Pearl Cichlid (Geophagus brasiliensis), and as a secondary objective to also remove the widespread Eastern Gambusia (Gambusia holbrooki) in two artificial lakes used for irrigation purposes in Byford, Western Australia (WA). Rotenone, applied at the approved rate (i.e. 0.25 ppm), failed to eradicate all Eastern Gambusia, and possibly all of the Pearl Cichlids in the first attempt, but at a higher dose rate (i.e. 1 ppm) it eradicated both species on the second attempt. We attributed the initial failure partially to the low dose rate of rotenone approved by the Australian Pesticides and Veterinary Medicines Authority (APVMA). Pearl Cichlids are present in multiple public ponds and lakes, and waterways in the greater Perth metropolitan area (www.abc.net.au/news/2012-06-27/feral-fish-overtake-wa-native-species/4096580), and needs to be more aggressively managed by the Department of Primary Industries and Regional Development (DPIRD).

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在西澳大利亚州的两个灌溉湖中使用鱼藤酮消灭野生鱼类的经验教训

一项使用鱼藤酮的根除计划主要针对当地的野生珍珠鲷(巴西石鲷)种群，并作为次要目标，在西澳大利亚(WA) Byford的两个用于灌溉目的的人工湖中消灭广泛存在的东部赤鲷(Gambusia holbrooki)。鱼藤酮，以批准的剂量(即0.25 ppm)施用，未能在第一次尝试中根除所有的东部冈滨鱼，可能还有所有的珍珠慈鲷，但在第二次尝试中，以更高的剂量率(即1 ppm)，它根除了这两个物种。我们将最初的失败部分归因于澳大利亚农药和兽药管理局(APVMA)批准的鱼藤酮低剂量率。珍珠慈鲷存在于珀斯大都市区的多个公共池塘、湖泊和水道中(www.abc.net.au/news/2012-06-27/feral-fish-overtake-wa-native-species/4096580)，需要第一产业和区域发展部(DPIRD)更积极地管理。

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来源期刊

Ecological Management & Restoration Environmental Science-Management, Monitoring, Policy and Law

CiteScore

4.20

自引率

0.00%

发文量

期刊介绍： Ecological Management & Restoration is a peer-reviewed journal with the dual aims of (i) reporting the latest science to assist ecologically appropriate management and restoration actions and (ii) providing a forum for reporting on these actions. Guided by an editorial board made up of researchers and practitioners, EMR seeks features, topical opinion pieces, research reports, short notes and project summaries applicable to Australasian ecosystems to encourage more regionally-appropriate management. Where relevant, contributions should draw on international science and practice and highlight any relevance to the global challenge of integrating biodiversity conservation in a rapidly changing world. Topic areas: Improved management and restoration of plant communities, fauna and habitat; coastal, marine and riparian zones; restoration ethics and philosophy; planning; monitoring and assessment; policy and legislation; landscape pattern and design; integrated ecosystems management; socio-economic issues and solutions; techniques and methodology; threatened species; genetic issues; indigenous land management; weeds and feral animal control; landscape arts and aesthetics; education and communication; community involvement.