Natural mega disturbances drive spatial and temporal changes in diversity and genetic structure on the toadfish Aphos porosus.

ABSTRACT: Natural disturbances can modify extinction-colonization dynamics, driving changes in the genetic diversity and structure of marine populations. Along Chilean coast (36°S, 73°W), a strong hypoxic-upwelling event in 2008, and a mega earthquake-tsunami in 2010 caused mass mortality within the Aphos porosus population, which is a vulnerable species with low dispersal potential. We evaluated the effects of these two major disturbances on the diversity and spatial-temporal genetic structure of Aphos porosus in two neighboring areas that were impacted on different levels (High level: Coliumo Bay; Low level: Itata Shelf). Thirteen microsatellites (from 2008 to 2015) amplified in individuals collected from both locations were used to evaluate the effects of the two disturbances. Results showed that

SUBMITTER: Vasquez C 

PROVIDER: S-EPMC10457337 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature