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首页> 外文期刊>ICES Journal of Marine Science >Are juvenile Caribbean spiny lobsters (Panulirus argus) becoming less social?
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Are juvenile Caribbean spiny lobsters (Panulirus argus) becoming less social?

机译：加勒比海多刺龙虾（Panulirus argus）的社交活动是否正在减少？

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Caribbean spiny lobsters are one of the most commercially important fisheries due in large part to their highly gregarious nature that facilitates their harvest by the use of traps or aggregation devices containing conspecifics. Aggregation in this species has been shown to be due to strong attraction to conspecific chemical cues that influence movement rates, discovery of crevice shelters, and den sharing behaviours. Although aggregation has been shown to have many potential benefits (reduction in exposure time and predation risk), it may also have significant costs as well (increase in predator encounters, disease transmission, and fishing mortality). We compared the results of three published and three unpublished Y-maze chemical cue choice experiments from 1996 to 2012 to determine if there has been a decrease in conspecific attraction by early benthic juvenile Caribbean spiny lobsters (15-55 mm carapace length, CL). We found that attraction to conspecific chemical cues decreased since 2010 and was significantly lower in 2012. Lobsters showed individual variation in conspecific attraction but this variation was unrelated to size, sex, or dominance status. We also found localized regional variation in conspecific attraction with lobsters from high shelter/high disease areas showing significantly lower conspecific attraction than those from low shelter/low disease areas. Given that conspecific attraction varies among individuals and potentially increases mortality through either natural (increased disease transmission) or fishery-induced (attraction to traps) mechanisms, we should play close attention to this loss of conspecific attraction in juvenile lobsters. Future studies should investigate both the causation and the ecological significance of changes in conspecific attraction in regions that vary in intensity of disease (PaV1) and fishing pressure.
机译：加勒比带刺龙虾是最重要的商业渔业之一，在很大程度上是由于它们具有很高的群居性，可通过使用诱捕器或含有同种异体的聚集装置促进捕捞。该物种的聚集已被证明是由于对影响运动速率，发现缝隙庇护所和书房共享行为的特定化学线索的强烈吸引。尽管已经显示出聚集具有许多潜在的好处（减少接触时间和减少捕食风险），但它也可能具有巨大的成本（增加与捕食者的接触，疾病传播和捕捞死亡率）。我们比较了1996年至2012年的三个已发表和未发表的Y迷宫化学线索选择实验的结果，以确定早期底栖加勒比幼体多刺龙虾（15-55 mm甲壳长度，CL）的同种吸引是否有所减少。我们发现自2010年以来对特定化学线索的吸引力下降了，2012年显着降低。龙虾在特定吸引力上表现出个体差异，但这种差异与大小，性别或优势地位无关。我们还发现，高避难所/高病害地区的龙虾在特定物种吸引方面的局部区域差异显示，低避难所/低病害地区的龙虾的具体物种吸引显着降低。鉴于个体间的特异性吸引力不同，并且可能通过自然的（增加的疾病传播）机制或渔业诱导的（诱捕诱捕物）机制增加死亡率，因此，我们应密切注意幼龙虾的特异性吸引力的丧失。未来的研究应调查疾病强度（PaV1）和捕捞压力变化的区域中，种具吸引力的变化的因果关系和生态意义。

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