ABSTRACT: A worldwide increase in aquaculture has focussed attention on the interactions between aquaculture activities and the surrounding habitats and ecosystems. In Atlantic Canada, mussel aquaculture occurs alongside static-gear fisheries for American lobster Homarus americanus and rock crab Cancer irroratus. Current knowledge gaps surround how lobsters and crabs utilise aquaculture sites and the potential impacts of this use on wild fisheries. During 2015 and 2016, at 3 mussel farms within Malpeque Bay, Prince Edward Island, Canada, a combination of diver surveys and acoustic telemetry positional arrays were used to investigate differences in the abundance of lobsters between farms and adjacent reference sites, the number and duration of lobster visits to a mussel farm, and the fine-scale movements of lobsters and crabs inside and outside of mussel farms. Although lobster abundance at mussel farms varied from June-September, abundance only differed between the farms and their associated reference sites in June. Disturbance due to handling may have led some lobsters in the acoustic telemetry study to leave the mussel farm after tagging; however, those that remained crossed the farm boundary frequently, and there was little evidence that the farm was a refuge for lobsters. Both lobsters and crabs appeared to move at significantly slower speeds inside the mussel farm, suggesting that both species used the mussel farms for foraging and/or sheltering; this was particularly evident for the rock crab. The results of this multi-approach field study are informative for spatial planning and provide important insight into how commercially and ecologically important species use aquaculture facilities.

中文翻译：

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加拿大爱德华王子岛 Malpeque 湾贻贝养殖场附近美洲龙虾 Homarus americanus 和岩蟹 Cancer irroratus 的移动

摘要：世界范围内水产养殖业的增长将注意力集中在水产养殖活动与周围生境和生态系统之间的相互作用上。在加拿大大西洋地区，贻贝养殖与美国龙虾Homarus americanus和岩蟹Cancer irroratus的静态渔具渔业并存. 目前的知识差距围绕龙虾和螃蟹如何利用水产养殖场以及这种利用对野生渔业的潜在影响。2015 年和 2016 年期间，在加拿大爱德华王子岛 Malpeque 湾内的 3 个贻贝养殖场，结合潜水员调查和声学遥测定位阵列，调查了养殖场与邻近参考地点之间龙虾丰度、数量和持续时间的差异龙虾参观贻贝养殖场，以及龙虾和螃蟹在贻贝养殖场内外的精细移动。虽然贻贝养殖场的龙虾丰度在 6 月至 9 月期间有所不同，但丰度仅在 6 月的养殖场及其相关参考点之间有所不同。处理引起的干扰可能导致声学遥测研究中的一些龙虾在标记后离开贻贝养殖场；然而，那些留下来的经常越过农场边界，几乎没有证据表明农场是龙虾的避难所。龙虾和螃蟹在贻贝养殖场内的移动速度似乎要慢得多，这表明这两个物种都使用贻贝养殖场觅食和/或庇护；这对岩蟹来说尤为明显。这种多方法实地研究的结果为空间规划提供了信息，并为了解具有商业和生态重要性的物种如何使用水产养殖设施提供了重要见解。这对岩蟹来说尤为明显。这种多方法实地研究的结果为空间规划提供了信息，并为了解具有商业和生态重要性的物种如何使用水产养殖设施提供了重要见解。这对岩蟹来说尤为明显。这种多方法实地研究的结果为空间规划提供了信息，并为了解具有商业和生态重要性的物种如何使用水产养殖设施提供了重要见解。