Brown Trout Embryo Viability Linked to Male Color Traits
Author Information
Author(s): Wedekind Claus, Jacob Alain, Evanno Guillaume, Nusslé Sébastien, Müller Rudolf
Primary Institution: University of Lausanne
Hypothesis
Can the color traits of male brown trout predict the viability of their offspring?
Conclusion
Darker male brown trout sired more viable offspring, while red coloration was negatively correlated with embryo survival.
Supporting Evidence
- Darker males sired more viable offspring.
- Red coloration correlated negatively with embryo survival.
- Embryo viability was assessed through controlled rearing and later recapture of juveniles.
Takeaway
If a brown trout dad is darker, his babies are more likely to survive, but if he's bright red, they might not do so well.
Methodology
Brown trout were collected, fertilized in vitro, and embryos were reared under controlled conditions to assess viability based on male color traits.
Limitations
The low recapture rate of juveniles remains unexplained and may affect the interpretation of results.
Participant Demographics
Mature male brown trout from a natural spawning population in River Enziwigger, Switzerland.
Statistical Information
P-Value
0.002
Statistical Significance
p=0.002
Digital Object Identifier (DOI)
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