Data from: Rapid buildup of sympatric species diversity in Alpine whitefish
| Main Authors: | Doenz, Carmela J., Bittner, David, Vonlanthen, Pascal, Wagner, Catherine E., Seehausen, Ole |
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| Format: | info dataset Journal |
| Terbitan: |
, 2019
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/4934220 |
Daftar Isi:
- Adaptive radiations in postglacial fish offer excellent settings to study the evolutionary mechanisms involved in the rapid buildup of sympatric species diversity from a single lineage. Here, we address this by exploring the genetic and ecological structure of the largest Alpine whitefish radiation known, that of Lakes Brienz and Thun, using microsatellite data of more than 2000 whitefish caught during extensive species‐targeted and habitat‐randomized fishing campaigns. We find six strongly genetically and ecologically differentiated species, four of which occur in both lakes, and one of which was previously unknown. These four exhibit clines of genetic differentiation that are paralleled in clines of eco‐morphological and reproductive niche differentiation, consistent with models of sympatric ecological speciation along environmental gradients. In Lake Thun, we find two additional species, a profundal specialist and a species introduced in the 1930s from another Alpine whitefish radiation. Strong genetic differentiation between this introduced species and all native species of Lake Thun suggests that reproductive isolation can evolve among allopatric whitefish species within 15,000 years and persist in secondary sympatry. Consistent with speciation theory, we find stronger correlations between genetic and ecological differentiation for sympatrically than for allopatrically evolved species.
- Doenz_etal_Alpinewhitefish_genetic_morphological_ecological_data2Individual genetic, morphological and ecological data for whitefish caught in Lake Thun and Brienz. Individuals were genotyped at 10 microsatellite loci (missing data=999). Sampling type is either species_targeted (species-targeted fishing on known spawning grounds) or habitat_randomized (quantitative and taxonomically unbiased sampling across the entire lake). Sampling location is not indicated for species targeted fishing to protect spawning grounds. Capture habitat is given for habitat randomized fishing; all fish caught >5 m above ground were considered pelagic. Structure assignment is based on the assignment analysis using reference populations as described in the paper; here, individuals were assigned to species by considering their maximum assignment proportion. The second sheet contains genotypic data for whitefish caught in Lake Constance before/during its eutrophication period.