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- Movement patterns and connectivity of argyrosomus regius along the southwest coast of Portugal using network analysisPublication . Fanna, Samuele; Gandra, Miguel; Kraft, Sebastian; Martínez Ramírez, Lucas; Vilas, Cesar; Winkler, Alexander; Abecasis, DavidThe meagre (Argyrosomus regius) is a large teleost inhabiting the coastal waters of the East Atlantic Ocean and the Mediterranean Sea. Along the Iberian Peninsula, it is frequently targeted by both commercial and recreational fisheries. Despite its relevance, information on its population structure and movement ecology has been scarce until recently. While these studies have provided a foundation, information on the main migratory corridors along the coast is still missing. The current study aimed to identify primary migratory routes, aggregations, and residency sites along the Southwest coast of Portugal. Forty-nine adult meagres were captured and tagged with acoustic transmitters between 2018 and 2023. Their movement was monitored from 122 acoustic receivers, grouped into 25 arrays, which were deployed throughout the Gulf of C´adiz and along the Southwest coast of Portugal. A spatial network approach was applied to analyse these data. The locations near the tagging site and along the Southwest coast displayed high values of eigenvector and betweenness centralities, indicating their crucial role in facilitating the connectivity of adult meagre between the two regions. Furthermore, co-occurrences outside the spawning season highlight their role as potential feeding grounds. The number of detections and co-occurrences near the Guadiana Estuary provides further evidence that the location may serve as a spawning ground, although additional data are needed to confirm this. Our findings expand previous research, identifying key passages and aggregation sites for meagre along the coast. These results can inform management and conservation efforts, particularly in the context of marine spatial planning.