Strong Climate Associations but No Temporal Trends in Nesting Phenology of Blanding's Turtles (Emydoidea blandingii)

Byer, Nathan W.; Reid, Brendan N.; Thiel, Richard P.; Peery, M. Zachariah

doi:10.1655/herpetologica-d-20-00013

Cited by 4 publications

(1 citation statement)

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“…1) had greater representation of this cluster as well. For the E. blandingii SNP dataset, site SHone of the largest and beststudied Blanding's turtle populations in Wisconsin [40][41][42][43] was assigned a unique cluster, highlighting the importance of protecting this site in the state. In contrast, the target gene panel was classified into a larger number of clusters that: (a) did not appear to correspond to clusters observed in the SNP datasets, and (b) overlapped spatially.…”

Section: Spatial Patterns In Neutral and Adaptive Genetic Variationmentioning

confidence: 99%

Land use and life history constrain adaptive genetic variation and reduce the capacity for climate change adaptation in turtles

et al. 2021

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Background Rapid anthropogenic climate change will require species to adapt to shifting environmental conditions, with successful adaptation dependent upon current patterns of genetic variation. While landscape genomic approaches allow for exploration of local adaptation in non-model systems, most landscape genomics studies of adaptive capacity are limited to exploratory identification of potentially important functional genes, often without a priori expectations as to the gene functions that may be most important for climate change responses. In this study, we integrated targeted sequencing of genes of known function and genotyping of single-nucleotide polymorphisms to examine spatial, environmental, and species-specific patterns of potential local adaptation in two co-occuring turtle species: the Blanding’s turtle (Emydoidea blandingii) and the snapping turtle (Chelydra serpentina). Results We documented divergent patterns of spatial clustering between neutral and putatively adaptive genetic variation in both species. Environmental associations varied among gene regions and between species, with stronger environmental associations detected for genes involved in stress response and for the more specialized Blanding’s turtle. Land cover appeared to be more important than climate in shaping spatial variation in functional genes, indicating that human landscape alterations may affect adaptive capacity important for climate change responses. Conclusions Our study provides evidence that responses to climate change will be contingent on species-specific adaptive capacity and past history of exposure to human land cover change.

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Section: Spatial Patterns In Neutral and Adaptive Genetic Variationmentioning

confidence: 99%