scholarly journals Evolution of Dispersal Can Rescue Populations from Expansion Load

2020 ◽  
Vol 195 (2) ◽  
pp. 349-360 ◽  
Author(s):  
Stephan Peischl ◽  
Kimberly J. Gilbert
Keyword(s):  
Evolution Of Dispersal ◽  
Expansion Load

Demography, genetic diversity and expansion load in the colonizing species Leontodon longirostris (Asteraceae) throughout its native range

2021 ◽  
Vol 30 (5) ◽  
pp. 1190-1205
Author(s):  
Manuel Pedro ◽  
Miquel Riba ◽  
Santiago C. González‐Martínez ◽  
Pedro Seoane ◽  
Rocío Bautista ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Native Range ◽  
Colonizing Species ◽  
Expansion Load

Parent‐Offspring Conflict and the Evolution of Dispersal Distance

2010 ◽  
Vol 175 (1) ◽  
pp. 38-49 ◽  
Author(s):  
Jostein Starrfelt ◽  
Hanna Kokko
Keyword(s):  
Dispersal Distance ◽  
Evolution Of Dispersal

scholarly journals The best of both worlds: Shortcutting evolution through adaptive hybridization in hares

2021 ◽  
Author(s):  
Jaakko L.O. Pohjoismäki ◽  
Craig Michell ◽  
Riikka Levänen ◽  
Steve Smith
Keyword(s):  
Gene Flow ◽  
Balancing Selection ◽  
Uncoupling Protein ◽  
Lepus Europaeus ◽  
Genetic Introgression ◽  
The Novel ◽  
Mountain Hare ◽  
Uncoupling Protein 1 ◽  
Expansion Load ◽  
Candidate Loci

Abstract Brown hares (Lepus europaeus Pallas) are able to hybridize with mountain hares (L. timidus Linnaeus) and produce fertile offspring, which results in cross-species gene flow. However, not much is known about the functional significance of this genetic introgression. Using targeted sequencing of candidate loci combined with mtDNA genotyping, we found the ancestral genetic diversity in the brown hare to be small, likely due to founder effect and range expansion, while gene flow from mountain hares constitutes an important source of functional genetic variability. Some of this variability, such as the alleles of the mountain hare thermogenin (uncoupling protein 1, UCP1), is likely of adaptive advantage for brown hares, whereas immunity-related MHC alleles are reciprocally exchanged and maintained via balancing selection. Our study offers a rare example where an expanding species can ease its expansion load through hybridization and obtain beneficial alleles to shortcut evolutionary adaptation to the novel environmental conditions.

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