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  3. Environmentally independent selection for hybrids between divergent freshwater stickleback lineages in semi-natural ponds.
 

Environmentally independent selection for hybrids between divergent freshwater stickleback lineages in semi-natural ponds.

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BORIS DOI
10.48350/184337
Date of Publication
August 2023
Publication Type
Article
Division/Institute

Institut für Ökologie...

Institut für Ökologie...

Author
Hudson, Cameron Marshall
Cuenca Cambronero, Maria
Moosmann, Marvin Alexander
Institut für Ökologie und Evolution (IEE)
Narwani, Anita
Spaak, Piet
Seehausen, Ole
Institut für Ökologie und Evolution (IEE) - Aquatische Ökologie
Institut für Ökologie und Evolution (IEE)
Matthews, Blake
Subject(s)

500 - Science::570 - ...

Series
Journal of evolutionary biology
ISSN or ISBN (if monograph)
1420-9101
Publisher
Wiley
Language
English
Publisher DOI
10.1111/jeb.14194
PubMed ID
37394735
Uncontrolled Keywords

adaptation hybridizat...

Description
Hybridization following secondary contact of genetically divergent populations can influence the range expansion of invasive species, though specific outcomes depend on the environmental dependence of hybrid fitness. Here, using two genetically and ecologically divergent threespine stickleback lineages that differ in their history of freshwater colonization, we estimate fitness variation of parental lineages and hybrids in semi-natural freshwater ponds with contrasting histories of nutrient loading. In our experiment, we found that fish from the older freshwater lineage (Lake Geneva) and hybrids outperformed fish from the younger freshwater lineage (Lake Constance) in terms of both growth and survival, regardless of the environmental context of our ponds. Across all ponds, hybrids exhibited the highest survival. Although wild-caught adult populations differed in their functional and defence morphology, it is unclear which of these traits underlie the fitness differences observed among juveniles in our experiment. Overall, our work suggests that when hybrid fitness is insensitive to environmental conditions, as observed here, introgression may promote population expansion into unoccupied habitats and accelerate invasion success.
Handle
https://boris-portal.unibe.ch/handle/20.500.12422/168338
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J_of_Evolutionary_Biology_-_2023_-_Hudson_-_Environmentally_independent_selection_for_hybrids_between_divergent_freshwater.pdftextAdobe PDF9.46 MBpublishedOpen
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