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Invaders in hot water: a simple decontamination method to prevent the accidental spread of aquatic invasive non-native species.
Biological Invasions ( IF 2.9 ) Pub Date : 2015-09-01 , DOI: 10.1007/s10530-015-0875-6
Lucy G Anderson 1 , Alison M Dunn 1 , Paula J Rosewarne 1 , Paul D Stebbing 2
Affiliation  

Watersports equipment can act as a vector for the introduction and spread of invasive non native species (INNS) in freshwater environments. To support advice given to recreational water users under the UK Government's Check Clean Dry biosecurity campaign and ensure its effectiveness at killing a range of aquatic INNS, we conducted a survival experiment on seven INNS which pose a high risk to UK freshwaters. The efficacy of exposure to hot water (45 °C, 15 min) was tested as a method by which waters users could 'clean' their equipment and was compared to drying and a control group (no treatment). Hot water had caused 99 % mortality across all species 1 h after treatment and was more effective than drying at all time points (1 h: χ2 = 117.24, p < 0.001; 1 day χ2 = 95.68, p < 0.001; 8 days χ2 = 12.16, p < 0.001 and 16 days χ2 = 7.58, p < 0.001). Drying caused significantly higher mortality than the control (no action) from day 4 (χ2 = 8.49, p < 0.01) onwards. In the absence of hot water or drying, 6/7 of these species survived for 16 days, highlighting the importance of good biosecurity practice to reduce the risk of accidental spread. In an additional experiment the minimum lethal temperature and exposure time in hot water to cause 100 % mortality in American signal crayfish (Pacifastacus leniusculus), was determined to be 5 min at 40 °C. Hot water provides a simple, rapid and effective method to clean equipment. We recommend that it is advocated in future biosecurity awareness campaigns.

中文翻译:

热水中的入侵者:一种简单的净化方法,可以防止水生入侵性外来物种的意外传播。

水上运动设备可以作为媒介在淡水环境中引入和传播非本地入侵物种(INNS)。为了支持英国政府的“检查干净干燥”生物安全运动下向休闲用水用户提供的建议,并确保其杀死一系列水生非传染性非生物活性的有效性,我们对七个对英国淡水构成高风险的非传染性非传染性动物进行了生存实验。测试了暴露于热水(45°C,15分钟)的功效,该方法是水使用者可以“清洁”其设备的方法,并与干燥和对照组(不进行处理)进行了比较。热水在处理后1小时内导致所有物种的死亡率达到99%,并且比在所有时间点干燥都更有效(1小时:χ2= 117.24,p <0.001; 1天χ2= 95.68,p <0.001; 8天χ2= 12.16,p <0.001和16天χ2= 7。58,p <0.001)。从第4天开始,干燥引起的死亡率显着高于对照组(无作用)(χ2= 8.49,p <0.01)。在没有热水或没有干燥的情况下,这些物种中的6/7可以存活16天,这突出了良好的生物安全措施对降低意外传播风险的重要性。在另一个实验中,确定在40°C下5分钟内导致美国信号小龙虾(细小Pacifastacus leniusculus)100%死亡的热水中的最小致死温度和暴露时间。热水提供了一种简单,快速而有效的方法来清洁设备。我们建议在未来的生物安全意识运动中提倡该方法。这些物种中有6/7种存活了16天,突出了良好生物安全措施对降低意外传播风险的重要性。在另一个实验中,确定在40°C下5分钟内导致美国信号小龙虾(细小Pacifastacus leniusculus)100%死亡的热水中的最小致死温度和暴露时间。热水提供了一种简单,快速而有效的方法来清洁设备。我们建议在未来的生物安全意识运动中提倡该方法。这些物种中有6/7种存活了16天,突出了良好生物安全措施对降低意外传播风险的重要性。在另一个实验中,确定在40°C下5分钟内导致美国信号小龙虾(细小Pacifastacus leniusculus)100%死亡的热水中的最小致死温度和暴露时间。热水提供了一种简单,快速而有效的方法来清洁设备。我们建议在未来的生物安全意识运动中提倡该方法。热水提供了一种简单,快速而有效的方法来清洁设备。我们建议在未来的生物安全意识运动中提倡该方法。热水提供了一种简单,快速而有效的方法来清洁设备。我们建议在未来的生物安全意识运动中提倡该方法。
更新日期:2015-03-26
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