Bisazir as a chemosterilant to control invasive vertebrates: ecotoxicity and efficacy to induce male sterility in Lithobates catesbeianus

IF 1.5 4区环境科学与生态学 Q3 BIODIVERSITY CONSERVATION

Management of Biological Invasions Pub Date : 2022-01-01 DOI:10.3391/mbi.2022.13.4.12

S. Descamps, A. De Vocht

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引用次数: 1

Abstract

Chemical sterilisation is a way to control populations of invasive exotic species. To investigate the potential to control populations of invasive American bullfrog ( Lithobates catesbeianus ), 26 adult male individuals were caught and injected with a dose of 0, 12.5, 25, 50, 100 mg/kg bisazir in order to induce DNA fragmentation in sperm cells and subsequent induce sterility. The results indicate that injecting 50 mg/kg bisazir causes significant fragmentation in the sperm of Lithobates catesbeianus . Before using chemicals in situ their potential risk for the environment should be documented. As a first step the inherent ecotoxic properties of bisazir were evaluated in both acute and chronic aquatic tests: microtox ( Aliivibrio fischeri ), microalga ( Raphidocelis subcapitata ), duckweed ( Lemna minor ), waterflea ( Daphnia magna ). The no effect concentration (NOEC) was 1 mg/l for Daphnia reproduction. Based on these results the predicted no effect concentration (PNEC) value was 20 µg/l. These results show the inherent ecotoxic properties of the compound and raise questions on the safe applicability in aquatic habitats.

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Bisazir作为化学灭绝剂控制入侵脊椎动物:生态毒性和诱导雄性不育的效果

化学绝育是控制外来入侵物种数量的一种方法。为了研究入侵美洲牛蛙(Lithobates catesbeianus)种群的控制潜力，捕获26只成年雄蛙，分别注射0、12.5、25、50、100 mg/kg剂量的比沙齐尔，诱导精子细胞DNA断裂并导致不育。结果表明，注射50 mg/kg的比沙齐尔后，黄颡鱼精子明显破碎。在就地使用化学品之前，应记录其对环境的潜在风险。作为第一步，在急性和慢性水生试验中评估了bisazir固有的生态毒性:微毒素(alivibrio fischeri)、微藻(Raphidocelis subcapitata)、浮萍(Lemna minor)、水蚤(Daphnia magna)。对水蚤繁殖无影响浓度为1 mg/l。基于这些结果，预测无影响浓度(PNEC)值为20µg/l。这些结果显示了该化合物固有的生态毒性，并对其在水生生境中的安全适用性提出了质疑。

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来源期刊

Management of Biological Invasions Agricultural and Biological Sciences-Ecology, Evolution, Behavior and Systematics

CiteScore

3.40

自引率

6.70%

发文量

审稿时长

16 weeks

期刊介绍： Management of Biological Invasions, established in 2010 by Dr. Elias Dana, is an open access, peer-reviewed international journal focusing on applied research in biological invasions in aquatic and terrestrial ecosystems from around the world. This journal is devoted to bridging the gap between scientific research and the use of science in decision-making, regulation and management in the area of invasive species introduction and biodiversity conservation. Managing biological invasions is a crisis science, with Management of Biological Invasions aiming to provide insights to the issues, to document new forms of detection, measurements and analysis, and to document tangible solutions to this problem. In addition to original research on applied issues, Management of Biological Invasions publishes technical reports on new management technologies of invasive species and also the proceedings of relevant international meetings. As a platform to encourage informed discussion on matters of national and international importance, we publish viewpoint papers that highlight emerging issues, showcase initiatives, and present opinions of leading researchers.