Este artículo contiene 10 páginas, 6 figuras, 1 tabla.
Dispersal is one of the main determining factors of population structure. In the marine habitat, well-connected populations with large numbers of reproducing individuals are common but even so population structure can exist on a small-scale. Variation in dispersal patterns between populations or over time is often associated to geographic distance or changing oceanographic barriers. Consequently, detecting structure and variation in dispersal on a fine-scale within marine populations still remains a challenge. Here we propose and use a novel approach of combining a clustering model, early-life history trait information from fish otoliths, spatial coordinates and genetic markers to detect very fine-scale dispersal patterns. We collected 1573 individuals (946 adults and 627 juveniles) of the blackfaced blenny across a small-scale (2 km) coastline as well as at a larger-scale area (
We are grateful to the Southwest Fisheries Science Center Molecular Ecology and Genetic Analysis Team for support in the lab and helpful comments and Jinliang Wang for his help in converting relatedness into a distance measurement. This work was partially funded by the Spanish Ministry of Science and Innovation through the CTM2017-88080 (AEI/FEDER, UE) project. The authors C.S., M.P. and E.M. are part of the research groups 2017SGR-1120 and 2017SGR-378 of the Generalitat de Catalunya.