Phenotypic variation of walleye, Sander vitreus, in Canadian Shield lakes: New insights on percid polymorphism

@article{Paradis2005PhenotypicVO,
  title={Phenotypic variation of walleye, Sander vitreus, in Canadian Shield lakes: New insights on percid polymorphism},
  author={Yves Paradis and Pierre Magnan},
  journal={Environmental Biology of Fishes},
  year={2005},
  volume={73},
  pages={357-366}
}
  • Y. Paradis, P. Magnan
  • Published 1 August 2005
  • Environmental Science
  • Environmental Biology of Fishes
SynopsisLiterature on colour dimorphism in walleye has concerned only the blue form, Sander vitreus glaucum (formerly Stizostedion vitreum glaucum), historically found in lakes Erie and Ontario and considered to be extinct from the fish fauna since the 1960s. In this paper, we report unusual observations of a blue form of walleye living in sympatry with the yellow form, Sander vitreus (formerly Stizostedion vitreum), in five lakes of the Canadian Shield, northern Québec. We compared head… 
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Walleye from Lake Winnipeg do not seem to exhibit a simple resource polymorphism where different ecotypes are associated with alternate habitats throughout their life history, nor do they exhibit characteris- tics of a simple mating polymorphism.
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TLDR
Contemporary walleye populations possess high levels of genetic diversity and divergence, despite habitat degradation and exploitation, and genetic and previously published tagging data indicate that natal homing and spawning site philopatry led to population structure.
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TLDR
The results suggest the colonization of each lake by a single group of walleye followed by the parallel origin of the blue phenotype, which could represent an excellent model for studying mechanisms underlying divergent selection and reproductive isolation.
Comparative Genetic Diversity, Population Structure, and Adaptations of Walleye and Yellow Perch Across North America
TLDR
Results reveal broad-scale correspondence to isolation by geographic distance, however, their fine-scale population structures show less relationship, often with pronounced genetic differences among some nearby reproductive groups.
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TLDR
Sandercyanin was found solely on dorsal surfaces of the fish and was localized to novel cells in the epidermis, similar in appearance to secretory sacciform cells, and concentrations were significantly higher in fish collected in summer versus other seasons.
Taxonomy, Distribution, and Evolution of the Percidae
TLDR
An up-to-date account relating the results of the latest DNA sequence and morphological analyses to resolve the relationships of the family Percidae, including its component genera and species, and newly assembled distribution maps for the taxa.
Purification and properties of Sandercyanin, a blue protein secreted in the mucus of blue forms of walleye, Sander vitreus
TLDR
A blue protein present in the mucus coating blue forms of walleye, Sander vitreus, was purified to homogeneity by a combination of ion exchange and hydrophobic interaction chromatography to suggest that the blue protein is a new biliprotein that is termed Sandercyanin.
Nested Levels of Adaptive Divergence: The Genetic Basis of Craniofacial Divergence and Ecological Sexual Dimorphism
TLDR
This study provides a holistic understanding of the genetic underpinnings of adaptive divergence in craniofacial shape using cichlids from the dramatic adaptive radiation of Lake Malawi and focuses on understanding the genetic basis of two aspects of relatively subtle phenotypic variation.
" Glaucus "
A population genetic window into the past and future of the walleye Sander vitreus: relation to historic walleye and the extinct " blue pike " S. v. Abstract Background: Conserving genetic diversity

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