Novel RAD sequence data reveal a lack of genomic divergence between dietary ecotypes in a landlocked salmonid population

Conservation Genetics Resources
By: , and 

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Abstract

Preservation of heritable ecological diversity within species and populations is a key challenge for managing natural resources and wild populations. Salmonid fish are iconic and socio-economically important species for commercial, aquaculture, and recreational fisheries across the globe. Many salmonids are known to exhibit ecological divergence within species, including distinct feeding ecotypes within the same lakes. Here we used 5559 SNPs, derived from RAD sequencing, to perform population genetic comparisons between two dietary ecotypes of sockeye salmon (Oncorhynchus nerka) in Jo-Jo Lake, Alaska (USA). We tested the standing hypothesis that these two ecotypes are currently diverging as a result of adaptation to distinct dietary niches; results support earlier conclusions of a single panmictic population. The RAD sequence data revealed 40 new SNPs not previously detected in the species, and our sequence data can be used in future studies of ecotypic diversity in salmonid species.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Novel RAD sequence data reveal a lack of genomic divergence between dietary ecotypes in a landlocked salmonid population
Series title Conservation Genetics Resources
DOI 10.1007/s12686-017-0791-4
Volume 10
Issue 2
Year Published 2017
Language English
Publisher Springer
Contributing office(s) Coop Res Unit Leetown
Description 3 p.
First page 169
Last page 171
Country United States
State Alaska
Other Geospatial Jo-Jo Lake