OFI SF7 Use of mussel gaping behaviour as a toxin early warning system

拟议研究摘要(250字)位于海岸的水产养殖场有时会暴露在海水中的毒素中。对于贝类生产，有害的藻华(HAB)导致停产和经济损失。早期预警系统可以在双壳类收割关闭之前预测毒素的发生，从而将这些损害降至最低，这可以促进管理做法，如转移到湿储存设施以保持商业化。在合成物质接触污染物期间，贻贝关闭阀门以与环境隔离(Durier等人，2021)。然而，在暴露于由Alexandrium catanella产生的麻痹性贝类中毒(PSP)期间，发现贻贝瘫痪，阀门开度高于正常行为(Durier等人，2022年提交)。开发有害藻华早期预警系统的目的是在达到关闭捕捞的法定门槛之前发现行为变化。2019年，对贻贝裂口的监测允许在达到这一法律门槛之前10天检测到链状亚历山大藻(Durier等人，2022年提交)。这一结果非常令人鼓舞，具有有趣的预期，允许为制片人制定管理战略。然而，在提出这一解决方案之前，需要对系统进行优化，以保证预期的检测和预警系统避免误报或漏报的能力。特别是，必须验证与其他扰动的相互作用，如海上交通声音，以确保系统的有效性。

Summary of proposed research (250 words)Aquaculture farms situated on the coast are sometimes exposed to toxins present in sea water. For shellfish production, harmful algal blooms (HAB) result in harvest closure and economic loss. An early warning system could minimize these damages by anticipating the onset of toxins before bivalve harvest closure, which could facilitate management practices, like transfer to wet storage facilities to maintain commercialization. During contaminants exposure by synthetic substance, mussels closed their valves to isolate from the environment (Durier et al., 2021). However, during the exposure to Paralytic Shellfish poisoning (PSP) produced by Alexandrium catanella, mussels paralysis was detected, with a valve opening higher than the normal behaviour (Durier et al, 2022 submitted). The objective of the development of an early warning system for harmful algal bloom is to detect the behavioural change before reaching the legal threshold for harvesting closure. In 2019, the monitoring of mussel gaping allowed the detection of Alexandrium catenella 10 days before reaching this legal threshold (Durier et al, 2022 submitted). This result is very encouraging, with an interesting anticipation, permitting development of management strategies for the producers. However, before proposing this solution, the system needs to be optimized to guarantee the anticipated detection and the ability of the early warning system to avoid false positives or false negatives. In particular, the interactions with other perturbations like maritime traffic sound must be verified to guarantee the efficacy of the system.