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7 results for “Lynx canadensis”
Data from: Spatial and environmental influences on selection in a clock gene coding trinucleotide repeat in Canada lynx (Lynx canadensis)
Clock genes exhibit substantial control over gene expression and ultimately life-histories using external cues such as photoperiod, and are thus likely to be critical for adaptation to shifting seasonal conditions and novel environments as species redistribute their ranges under climate change. Coding trinucleotide repeats (cTNRs) are found within several clock genes, and may be interesting targets of selection due to their containment within exonic regions and elevated mutation rates. Here, we conduct inter-specific characterization of the NR1D1 cTNR between Canada lynx and bobcat, and intra-specific spatial and environmental association analyses of neutral microsatellites and our functional cTNR marker, to investigate the role of selection on this locus in Canada lynx. We report signatures of divergent selection between lynx and bobcat, with the potential for hybrid-mediated gene flow in the area of range overlap. We also provide evidence that this locus is under selection across Canada lynx in eastern Canada, with both spatial and environmental variables significantly contributing to the explained variation, after controlling for neutral population structure. These results suggest that cTNRs may play an important role in the generation of functional diversity within some mammal species, and allow for contemporary rates of adaptation in wild populations in response to environmental change. We encourage continued investment into the study of cTNR markers to better understand their broader relevance to the evolution and adaptation of mammals.
Data from: Spatial and environmental influences on selection in a clock gene coding trinucleotide repeat in Canada lynx (Lynx canadensis)
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Data from: A test of somatic mosaicism in the androgen receptor gene of Canada lynx (Lynx canadensis)
Background: The androgen receptor, an X-linked gene, has been widely studied in human populations because it contains highly polymorphic trinucleotide repeat motifs that have been associated with a number of adverse human health and behavioral effects. A previous study on the androgen receptor gene in carnivores reported somatic mosaicism in the tissues of a number of species including Eurasian lynx (Lynx lynx). We investigated this claim in a closely related species, Canada lynx (Lynx canadensis). The presence of somatic mosaicism in lynx tissues could have implications for the future study of exonic trinucleotide repeats in landscape genomic studies, in which the accurate reporting of genotypes would be highly problematic. Methods: To determine whether mosaicism occurs in Canada lynx, two lynx individuals were sampled for a variety of tissue types (lynx 1) and tissue locations (lynx 1 and 2), and 1,672 individuals of known sex were genotyped to further rule out mosaicism. Results: We found no evidence of mosaicism in tissues from the two necropsied individuals, or any of our genotyped samples. Conclusions: Our results indicate that mosaicism does not manifest in Canada lynx. Therefore, the use of hide samples for further work involving trinucleotide repeat polymorphisms in Canada lynx is warranted.
On following pages: 22. Canadian Lynx (Lynx canadensis); 23. Eurasian Lynx (Lynx lynx); 24. Iberian Lynx (Lynx pardinus). in Felidae
On following pages: 22. Canadian Lynx (Lynx canadensis); 23. Eurasian Lynx (Lynx lynx); 24. Iberian Lynx (Lynx pardinus).
Figure 1 in Paint it black: first record of melanism in Canada lynx (Lynx canadensis)
Figure 1: Low resolution still images of a melanistic Canada lynx (Lynx canadensis) taken from a 30-s video from Yukon, Canada. Source video courtesy of J. Stuckey.
Data from: Selection and drift influence genetic differentiation of insular Canada lynx (Lynx canadensis) on Newfoundland and Cape Breton Island
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Data from: A test of somatic mosaicism in the androgen receptor gene of Canada lynx (Lynx canadensis)
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