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首页> 外文期刊>Biological invasions >Movement ecology of Indo-Pacific lionfish on Caribbean coral reefs and its implications for invasion dynamics
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Movement ecology of Indo-Pacific lionfish on Caribbean coral reefs and its implications for invasion dynamics

机译：印度太平洋Pacific鱼在加勒比珊瑚礁上的运动生态学及其对入侵动力学的影响

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摘要

The spread of marine invasive species at large geographic scales depends largely on current-driven larval dispersal. However, at smaller spatial scales, movements occurring after larval settlement can greatly influence the success of local control programs. We conducted the first dedicated tracking study of Indo-Pacific lionfish (Pterois volitans and P. miles) on Caribbean coral reefs. Using a mark-resighting approach, we estimated the scale and frequency of movements of 79 tagged lionfish on patchy and continuous reefs to study factors influencing movement. Many tagged lionfish moved relatively little, with similar to 60 % of fish resighted at least once and 10 % not moving from their initial tagging location. However, maximum movements (as far as 1.35 km in 15 days) far exceeded previous estimates. Lionfish movement was density dependent, declined at larger body sizes, and depended on seascape structure. Lionfish on continuous reefs moved faster and more often than those on patch reefs, and lionfish in patchy habitats moved farther when patches were closer together. Invasions taking place over heterogeneous seascapes such as coral reefs are difficult to manage effectively with spatially uniform regional management plans, but understanding an invader's movement ecology can help to optimize the distribution of limited resources for invasive management.
机译：海洋入侵物种在较大的地理范围内的扩散在很大程度上取决于当前驱动的幼虫扩散。但是，在较小的空间尺度上，幼虫沉降后发生的运动会极大地影响本地控制程序的成功。我们对加勒比海珊瑚礁上的印度太平洋Pacific鱼（Pterois volitans和P. miles）进行了首次专门跟踪研究。使用标记重新标记方法，我们估计了79个带标签的l鱼在斑驳的和连续的礁石上的运动规模和运动频率，以研究影响运动的因素。许多带标签的l鱼移动相对较少，大约有60％的鱼类被观察到至少一次，而有10％的鱼类没有离开其初始标签位置。但是，最大移动量（在15天内达到1.35公里）远远超出了先前的估计。鱼的运动与密度有关，在较大的体型下会下降，并取决于海景结构。连续礁上的鱼比斑块上的moved移动得更快，更频繁，斑块附近的together鱼在更靠近的地方移动得更远。利用空间上统一的区域管理计划很难有效地管理发生在珊瑚礁等异质海洋景观上的入侵，但是了解入侵者的移动生态可以帮助优化有限资源的分配，以进行入侵管理。

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