Signatures of adaptive divergence among populations of an avian species of conservation concern
| Autor: | Cameron L. Aldridge, Kevin P. Oh, Sara J. Oyler-McCance, Shawna J. Zimmerman, Robert S. Cornman |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
0301 basic medicine Range (biology) lcsh:Evolution Biology 010603 evolutionary biology 01 natural sciences Gene flow 03 medical and health sciences Genetics lcsh:QH359-425 Gene family Gene Ecology Evolution Behavior and Systematics Local adaptation Genetic diversity adaptive divergence Obligate Original Articles sage‐grouse signature of selection 030104 developmental biology Habitat Evolutionary biology Original Article General Agricultural and Biological Sciences local adaptation |
| Zdroj: | Evolutionary Applications Evolutionary Applications, Vol 12, Iss 8, Pp 1661-1677 (2019) |
| ISSN: | 1752-4571 |
| Popis: | Understanding the genetic underpinning of adaptive divergence among populations is a key goal of evolutionary biology and conservation. Gunnison sage‐grouse (Centrocercus minimus) is a sagebrush obligate species with a constricted range consisting of seven discrete populations, each with distinctly different habitat and climatic conditions. Though geographically close, populations have low levels of natural gene flow resulting in relatively high levels of differentiation. Here, we use 15,033 SNP loci in genomic outlier analyses, genotype–environment association analyses, and gene ontology enrichment tests to examine patterns of putatively adaptive genetic differentiation in an avian species of conservation concern. We found 411 loci within 5 kbp of 289 putative genes associated with biological functions or pathways that were overrepresented in the assemblage of outlier SNPs. The identified gene set was enriched for cytochrome P450 gene family members (CYP4V2, CYP2R1, CYP2C23B, CYP4B1) and could impact metabolism of plant secondary metabolites, a critical challenge for sagebrush obligates. Additionally, the gene set was also enriched with members potentially involved in antiviral response (DEAD box helicase gene family and SETX). Our results provide a first look at local adaption for isolated populations of a single species and suggest adaptive divergence in multiple metabolic and biochemical pathways may be occurring. This information can be useful in managing this species of conservation concern, for example, to identify unique populations to conserve, avoid translocation or release of individuals that may swamp locally adapted genetic diversity, or guide habitat restoration efforts. |
| Databáze: | OpenAIRE |
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