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Full-Text Articles in Biology
Weak Coupling Among Barrier Loci And Waves Of Neutral And Adaptive Introgression Across An Expanding Hybrid Zone, Mitchell Cruzan, Pamela G. Thompson, Nicolas Alexander Diaz, Elizabeth C. Hendrickson, Katie R. Gerloff, Katie A. Kline, Hannah M. Machiorlete, Jessica Persinger
Weak Coupling Among Barrier Loci And Waves Of Neutral And Adaptive Introgression Across An Expanding Hybrid Zone, Mitchell Cruzan, Pamela G. Thompson, Nicolas Alexander Diaz, Elizabeth C. Hendrickson, Katie R. Gerloff, Katie A. Kline, Hannah M. Machiorlete, Jessica Persinger
Biology Faculty Publications and Presentations
Hybridization can serve as an evolutionary stimulus, but we have little understanding of introgression at early stages of hybrid zone formation. We analyze reproductive isolation and introgression between a range-limited and a widespread species. Reproductive barriers are estimated based on differences in flowering time, ecogeographic distributions, and seed set from crosses. We find an asymmetrical mating barrier due to cytonuclear incompatibility that is consistent with observed clusters of coincident and concordant tension zone clines (barrier loci) for mtDNA haplotypes and nuclear SNPs. These groups of concordant clines are spread across the hybrid zone, resulting in weak coupling among barrier loci …
Microarthropod Contributions To Fitness Variation In The Common Moss ., Erin E. Shortlidge, Sarah B. Carey, Adam C. Payton, Stuart F. Mcdaniel, Todd N. Rosenstiel, Sarah M. Eppley
Microarthropod Contributions To Fitness Variation In The Common Moss ., Erin E. Shortlidge, Sarah B. Carey, Adam C. Payton, Stuart F. Mcdaniel, Todd N. Rosenstiel, Sarah M. Eppley
Biology Faculty Publications and Presentations
The evolution of sustained plant-animal interactions depends critically upon genetic variation in the fitness benefits from the interaction. Genetic analyses of such interactions are limited to a few model systems, in part because genetic variation may be absent or the interacting species may be experimentally intractable. Here, we examine the role of sperm-dispersing microarthropods in shaping reproduction and genetic variation in mosses. We established experimental mesocosms with known moss genotypes and inferred the parents of progeny from mesocosms with and without microarthropods, using a pooled sequencing approach. Moss reproductive rates increased fivefold in the presence of microarthropods, relative to control …