Coastal topography drives genetic structure in marine mussels

Nicastro, Katy; Zardi, Gerardo; McQuaid, C. D.; Teske, P. R.; Barker, N. P.

http://hdl.handle.net/10400.1/12113

Use this identifier to reference this record.

Name:	Description:	Size:	Format:
Coastal topography drives genetic structure in marine mussels.pdf		263.54 KB	Adobe PDF	Download

Send Feedback

Authors

Abstract(s)

Understanding population connectivity is fundamental] to ecology, and, for sedentary organisms, connectivity is achieved through larval dispersal. We tested whether coastal topography influences genetic structure in Perna Perna mussels by comparing populations inside bays and on the open coast. Higher hydrodynamic stress on the open coast produces higher mortality and thus genetic turnover. Populations on the open coast had fewer private haplotypes and less genetic endemism than those inside bays. Gene flow analysis showed that bays act as Source populations, with greater migration rates Out. of bays than into them. Differences in genetic structure on scales of 10s of kilometres show that coastal configuration strongly affects selection, larval dispersal and haplotype diversity,

Keywords

California upwelling system Indigenous perna-perna Mytilus-galloprovincialis Mitochondrial-Dna South-Africa Enzymatic amplification Mesoscale variation Wave exposure Recruitment Populations