TY - JOUR T1 - Spatial graphs highlight how multi‐generational dispersal shapes landscape genetic patterns A1 - Boulanger,Emilie A1 - Dalongeville,Alicia A1 - Andrello,Marco A1 - Mouillot,David A1 - Manel,Stéphanie AD - CEFE, Univ. Montpellier, CNRS, EPHE‐PSL, IRD, Univ. Paul Valéry Montpellier Montpellier, France AD - People and The Sea, Logon Daanbantayan Cebu, Philippines AD - EB, MARBEC, Univ. Montpellier, CNRS, Ifremer, IRD Montpellier ,France UR - https://archimer.ifremer.fr/doc/00630/74166/ DO - 10.1111/ecog.05024 KW - genetic connectivity KW - Mediterranean Sea KW - Mullus surmuletus KW - seascape genetics KW - spatial graphs KW - stepping-stone dispersal N2 - Current approaches that compare spatial genetic structure of a given species and the dispersal of its mobile phase can detect a mismatch between both patterns mainly due to processes acting at different temporal scales. Genetic structure result from gene flow and other evolutionary and demographic processes over many generations, while dispersal predicted from the mobile phase often represents solely one generation on a single time‐step. In this study, we present a spatial graph approach to landscape genetics that extends connectivity networks with a stepping‐stone model to represent dispersal between suitable habitat patches over multiple generations. We illustrate the approach with the case of the striped red mullet Mullus surmuletus in the Mediterranean Sea. The genetic connectivity of M. surmuletus was not correlate with the estimated dispersal probability over one generation, but with the stepping‐stone estimate of larval dispersal, revealing the temporal scale of connectivity across the Mediterranean Sea. Our results highlight the importance of considering multiple generations and different time scales when relating demographic and genetic connectivity. The spatial graph of genetic distances further untangles intra‐population genetic structure revealing the Siculo‐Tunisian Strait as an important corridor rather than a barrier for gene flow between the Western‐ and Eastern Mediterranean basins, and identifying Mediterranean islands as important stepping‐stones for gene flow between continental populations. Our approach can be easily extended to other systems and environments. Y1 - 2020/08 PB - Wiley JF - Ecography SN - 0906-7590 VL - 43 IS - 8 SP - 1167 EP - 1179 ID - 74166 ER -