Genomic data reveal similar genetic differentiation in aquifer species with different dispersal capabilities and life histories. (11th December 2019)

• Record Type: Journal Article
• Authors: Jordan, Steve; Hand, Brian K; Hotaling, Scott; Delvecchia, Amanda G; Malison, Rachel; Nissley, Clark; Luikart, Gordon; Stanford, Jack A
• Is Part Of: Biological journal of the Linnean Society. Volume 129:Number 2(2020)
• Page Start: 315
• Page End: 322
• Publication Date: 2019-12-11
• Subjects: Amphipoda -- aquifer ecosystem -- groundwater fauna -- Plecoptera -- RAD-seq; Biology -- Periodicals; Evolution (Biology) -- Periodicals; 570
• DOI: 10.1093/biolinnean/blz173
• Languages: English
• ISSNs: 0024-4066

Abstract

Abstract: Little is known about the life histories, genetic structure and population connectivity of shallow groundwater organisms. We used next-generation sequencing (RAD-seq) to analyse population genomic structure in two aquifer species: Paraperla frontalis (Banks, 1902 ), a stonefly with groundwater larvae and aerial (winged) adults; and Stygobromus sp., a groundwater-obligate amphipod. We found similar genetic differentiation in each species between floodplains separated by ~70 river km in the Flathead River basin of north-west Montana, USA. Given that Stygobromus lacks the above-ground life stage of P. frontalis, our findings suggest that connectivity and the magnitude of genetic structure cannot be definitively assumed from life history differences.