A genetically explicit model of speciation by sensory drive within a continuous population in aquatic environments
2007
Speciation by Sensory Drive in Aquatic Environments
publication
Evidence: moderate
Author Information
Author(s): Kawata Masakado, Shoji Ayako, Kawamura Shoji, Seehausen Ole
Hypothesis
Can speciation occur through sensory drive as a byproduct of divergent visual adaptation within a single unstructured population?
Conclusion
Speciation can occur where environmental gradients create divergent selection on sensory modalities used in mate choice.
Supporting Evidence
- Speciation occurred most frequently with intermediate environmental light gradients and small dispersal distances.
- Mutations causing large shifts in peak absorption promote speciation.
- Female preferences for male coloration are influenced by the spectral sensitivity of their visual systems.
Takeaway
Fish can develop into different species if they adapt to different light conditions in their environment, which affects how they see and choose mates.
Methodology
The study used individual-based simulations to model the evolution of visual pigments and color perception in a continuous habitat.
Limitations
The model may oversimplify the genetic control of visual perception and female preference.
Digital Object Identifier (DOI)
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