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

Morten Tønsberg Limborg; Wesley A. Larson; Kyle Shedd; Lisa W. Seeb; James E. Seeb

doi:10.1007/s12686-017-0791-4

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

Morten Tønsberg Limborg, Wesley A. Larson, Kyle Shedd, Lisa W. Seeb, James E. Seeb

3 Citations (Scopus)

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.

Original language	English
Journal	Conservation Genetics Resources
Volume	10
Issue number	2
Pages (from-to)	167-171
Number of pages	3
ISSN	1877-7252
DOIs	https://doi.org/10.1007/s12686-017-0791-4
Publication status	Published - 1 Jun 2018

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

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.",

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T1 - Novel RAD sequence data reveal a lack of genomic divergence between dietary ecotypes in a landlocked salmonid population

AU - Limborg, Morten Tønsberg

AU - Larson, Wesley A.

AU - Shedd, Kyle

AU - Seeb, Lisa W.

AU - Seeb, James E.

PY - 2018/6/1

Y1 - 2018/6/1

N2 - 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.

AB - 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.

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DO - 10.1007/s12686-017-0791-4

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

Abstract

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