Sensitivities of mosquitofish and black mudfish to a piscicide: Could rotenone be used to control mosquitofish in New Zealand wetlands?
Sensitivities of mosquitofish and black mudfish to a piscicide: Could rotenone be used to control mosquitofish in New Zealand wetlands?
复制标题
蚊鱼和黑泥鱼对杀鱼剂的敏感性：鱼藤酮可用于控制新西兰湿地的蚊鱼吗？
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
N. Ling
中科院分区：
文献类型：
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作者：
K. Willis;N. Ling
摘要为了探讨在有泥鳅栖息的湿地中使用鱼藤酮防治食蚊鱼的可行性，研究了食蚊鱼和黑泥鳅对杀鱼剂鱼藤酮的敏感性。将食蚊鱼暴露于四种标称鱼藤酮浓度（56、79、112、158 μg.L-1），并记录50%（ET 50）和90%（ET 90）个体在水面喘气所需的时间。在此阶段，将鱼从鱼藤酮中取出，并置于不含鱼藤酮的水中恢复。将泥鳅暴露于单一标称鱼藤酮浓度（100 μg.L-1），并在悬挂在水面并吞咽空气时取出。食蚊鱼的反应时间随浓度的增加而缩短。56和158 μg.L-1鱼藤酮的平均ET 50值分别为158和26 min。平均ET 90值分别为246和36 min。泥鳅对100 μg.L-1鱼藤酮的敏感性大约是食蚊鱼的两倍。所有泥鱼在接触鱼藤酮后都恢复了健康。管理的影响的研究结果进行了讨论。我们建议，如果鱼藤酮被用来控制在湿地食蚊鱼，它可以在夏季应用于残留的静水作为重复剂量100-200 μg.L-1。
Abstract The comparative sensitivities of mosquitofish (Gambusia affinis) and black mudfish (Neochanna diversus) to the piscicide rotenone were investigated to determine whether it is feasible to use rotenone to control mosquitofish in wetlands inhabited by mudfish. Mosquitofish were exposed to four nominal rotenone concentrations (56, 79, 112, 158 μg.L‐1) and the time taken for 50% (ET50) and 90% (ET90) of individuals to gasp at the water surface was recorded. Fish were removed from the rotenone at this stage and placed in rotenone‐free water to recover. Mudfish were exposed to a single nominal rotenone concentration (100 μg.L‐1), and removed when hanging at the surface and gulping air. The response time of mosquitofish decreased with concentration. Mean ET50 values were 158 and 26 min for 56 and 158 μg.L‐1 rotenone, respectively. Mean ET90 values were 246 and 36 min, respectively. Mudfish were approximately twice as sensitive as mosquitofish to 100 μg.L‐1 rotenone. All mudfish recovered following exposure to rotenone. The management implications of the findings are discussed. We suggest that if rotenone were to be used to control mosquitofish in wetlands, it could be applied in summer to remnant standing water as repeated doses of 100–200 μg.L‐1.