Cawthron Institute, 98 Halifax St East, Nelson 7010, New Zealand.
National Institute of Water and Atmospheric Research, 10 Kyle Street, Riccarton, Christchurch 8011, New Zealand.
Mar Pollut Bull. 2019 Feb;139:65-73. doi: 10.1016/j.marpolbul.2018.12.032. Epub 2018 Dec 19.
Biofouled commercial and recreational vessels are primary vectors for the introduction and spread of marine non-indigenous species (NIS). This study designed and assessed a portable system to reactively treat biofouling in the internal pipework of recreational vessels - a high-risk 'niche area' for NIS that is difficult to access and manage. A novel thermal treatment apparatus was optimised in a series of laboratory experiments performed using scale models of vessel pipework configurations. Treatment effectiveness was validated using the Pacific oyster Magallana gigas, a marine NIS with known resilience to heat. In subsequent field validations on actual recreational vessels, treatment was successfully delivered to high-risk portions of pipework when an effective seal between delivery unit and targeted pipework was achieved and ambient heat loss was minimised. In addition to demonstrating the feasibility of in-water treatment of vessel pipework, the study highlights the importance of robust optimisation and validation of any treatment system intended for biosecurity purposes.
生物污染的商用和休闲船只，是海洋外来物种（NIS）引入和传播的主要载体。本研究设计并评估了一种便携式系统，以对休闲船只内部管道中的生物污染进行反应性处理——这是 NIS 的一个高风险“利基区域”，难以进入和管理。一种新型的热处理设备在一系列使用船只管道配置比例模型进行的实验室实验中得到了优化。使用具有已知耐热能力的海洋外来物种太平洋牡蛎 Magallana gigas 对处理效果进行了验证。在对实际休闲船只的后续现场验证中，当输送单元与目标管道之间实现有效密封并最大程度减少环境热损失时，成功地对管道的高危部分进行了处理。除了展示对船只管道进行水内处理的可行性外，该研究还强调了针对生物安全目的而设计的任何处理系统进行稳健优化和验证的重要性。
