Mind the gut: genomic insights to population divergence and gut microbial composition of two marine keystone species ...

• Main Authors: Fietz, Katharina, Rye Hintze, Christian, Skovrind, Mikkel, Kjærgaard Nielsen, Tue, Limborg, Morten, Krag, Marcus, Palsbøll, Per, Hestbjerg Hansen, Lars, Rask Møller, Peter, Gilbert, M.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: figshare 2018
• Subjects: Microbiology; FOS Biological sciences; Genetics; Evolutionary Biology; Environmental Sciences not elsewhere classified; Ecology; Biological Sciences not elsewhere classified; Inorganic Chemistry; FOS Chemical sciences; Hyperoplus lanceolatus
• Online Access: https://dx.doi.org/10.6084/m9.figshare.c.4088189; https://springernature.figshare.com/collections/Mind_the_gut_genomic_insights_to_population_divergence_and_gut_microbial_composition_of_two_marine_keystone_species/4088189

Abstract Background Deciphering the mechanisms governing population genetic divergence and local adaptation across heterogeneous environments is a central theme in marine ecology and conservation. While population divergence and ecological adaptive potential are classically viewed at the genetic level, it has recently been argued that their microbiomes may also contribute to population genetic divergence. We explored whether this might be plausible along the well-described environmental gradient of the Baltic Sea in two species of sand lance (Ammodytes tobianus and Hyperoplus lanceolatus). Specifically, we assessed both their population genetic and gut microbial composition variation and investigated not only which environmental parameters correlate with the observed variation, but whether host genome also correlates with microbiome variation. Results We found a clear genetic structure separating the high-salinity North Sea from the low-salinity Baltic Sea sand lances. The observed genetic divergence was not ...