Development and pilot test of Baited Remote Underwater Video Systems (BRUVS) for informing on the status of piscivorous fish species.

Trawl surveys routinely conducted by Cefas under-sample some of the larger
piscivorous fish species, which are often either of commercial and/or
conservation interest. Additionally, some habitats cannot be sampled
effectively with trawls (e.g. reef habitats, deep-water areas etc), and other
gears (e.g. longline) cannot be deployed safely from Cefas Endeavour. Baited
Remote Underwater Video Systems (BRUVS) provide an alternative, non-lethal
method for sampling such fish, and have been widely used in the Southern
hemisphere to monitor fish assemblages in certain habitats. Over the course of
this project (Jan 2012 - Jan 2014), 18 deployments with BRUVS were made, with
a total of 37 hours, 23 mins recording time.

Cefas定期执行的拖网调查在部分大型肉食性鱼类物种上存在抽样不足的情况，这些物种通常具有商业价值及/或保护意义。此外，某些生境（例如珊瑚礁生境、深水区域等）无法通过拖网有效采样，而其他渔具（例如延绳钓）则无法从Cefas Endeavour安全投放。诱饵式远程水下摄像系统（BRUVS）为这类鱼类的采样提供了一种替代的、非致命的方法，并在南半球广泛用于监测特定生境中的鱼类群落。在本项目期间（2012年1月至2014年1月），共进行了18次BRUVS部署，累计记录时间达到37小时23分钟。