Marchessaux Guillaume, Chevalier Cristèle, Mangano Maria Cristina, Sarà Gianluca
Laboratory of Ecology, Department of Earth and Marine Science (DiSTeM), University of Palermo, Palermo, Italy; NBFC, National Biodiversity Future Center, Piazza Marina 61, 90133 Palermo, Italy.
Aix Marseille Univ, Univ Toulon, CNRS, IRD, MIO, Marseille, France.
Mar Pollut Bull. 2023 Sep;194(Pt A):115272. doi: 10.1016/j.marpolbul.2023.115272. Epub 2023 Jul 11.
The two invasive blue crabs, Callinectes sapidus and Portunus segnis have spread rapidly in the Mediterranean and no data exists on the connectivity of populations. Determining the source and recruitment areas is crucial to prioritize where population control measures should be put into immediate action. We simulated the dispersal of blue crab larvae using a Lagrangian model coupled at high resolution to estimate the potential connectivity of blue crab populations over a 3-year period. Our results reveal that the main areas at risk are the Spanish, French, Italian Tyrrhenian and Sardinian coasts for Callinectes sapidus with high populations connectivity. Tunisia and Egypt represent high auto recruitment zones for Portunus segnis restricted to the central and western basins. This study provides an overview of the connectivity between populations and will help define priority areas that require the urgent implementation of management measures.
两种入侵性蓝蟹，即美味优游蟹（Callinectes sapidus）和迟钝梭子蟹（Portunus segnis）在地中海迅速扩散，目前尚无关于种群连通性的数据。确定来源地和补充区域对于确定应立即实施种群控制措施的优先地点至关重要。我们使用高分辨率耦合的拉格朗日模型模拟了蓝蟹幼体的扩散，以估计蓝蟹种群在3年期间的潜在连通性。我们的结果表明，对于美味优游蟹而言，主要风险区域是西班牙、法国、意大利第勒尼安海和撒丁岛海岸，其种群连通性较高。突尼斯和埃及是迟钝梭子蟹的高自我补充区域，仅限于中西部海域。本研究概述了种群之间的连通性，并将有助于确定需要紧急实施管理措施的优先区域。
