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Limited Evidence for Parallel Evolution Among Desert-Adapted Peromyscus Deer Mice.
- Source :
- Journal of Heredity; May2021, Vol. 112 Issue 3, p286-302, 17p
- Publication Year :
- 2021
-
Abstract
- Warming climate and increasing desertification urge the identification of genes involved in heat and dehydration tolerance to better inform and target biodiversity conservation efforts. Comparisons among extant desert-adapted species can highlight parallel or convergent patterns of genome evolution through the identification of shared signatures of selection. We generate a chromosome-level genome assembly for the canyon mouse (Peromyscus crinitus) and test for a signature of parallel evolution by comparing signatures of selective sweeps across population-level genomic resequencing data from another congeneric desert specialist (Peromyscus eremicus) and a widely distributed habitat generalist (Peromyscus maniculatus), that may be locally adapted to arid conditions. We identify few shared candidate loci involved in desert adaptation and do not find support for a shared pattern of parallel evolution. Instead, we hypothesize divergent molecular mechanisms of desert adaptation among deer mice, potentially tied to species-specific historical demography, which may limit or enhance adaptation. We identify a number of candidate loci experiencing selective sweeps in the P. crinitus genome that are implicated in osmoregulation (Trypsin, Prostasin) and metabolic tuning (Kallikrein, eIF2-alpha kinase GCN2, APPL1/2), which may be important for accommodating hot and dry environmental conditions. [ABSTRACT FROM AUTHOR]
- Subjects :
- BIODIVERSITY conservation
PEROMYSCUS maniculatus
DEMOGRAPHY
MICE
TRYPSIN
Subjects
Details
- Language :
- English
- ISSN :
- 00221503
- Volume :
- 112
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Journal of Heredity
- Publication Type :
- Academic Journal
- Accession number :
- 150496988
- Full Text :
- https://doi.org/10.1093/jhered/esab009