Hybridization and Functional Novelty in Cichlids
Author Information
Author(s): Parnell Nicholas F, Hulsey C Darrin, Streelman J Todd
Primary Institution: Georgia Institute of Technology
Hypothesis
Does many-to-one mapping of form to function contribute to functional transgression in hybrid cichlids?
Conclusion
Hybridization among Lake Malawi cichlids can lead to functional novelty without changes in morphology.
Supporting Evidence
- Simulations showed that 80% of hybrid crosses produced transgressive function.
- Functional transgression occurred without changes in the lengths of jaw components.
- Transgressive individuals exhibited kinematic transmission values significantly different from their parents.
Takeaway
When different types of fish mix, their babies can sometimes be better at certain tasks than either parent, even if they look the same.
Methodology
The study used a genetic model to simulate hybrid offspring and analyzed kinematic transmission in cichlid jaw mechanics.
Potential Biases
The choice of species for simulation may not represent all possible hybrid combinations.
Limitations
The study's estimates of transgression are based on a limited number of simulated crosses.
Participant Demographics
The study focused on 86 species of Lake Malawi cichlids.
Statistical Information
P-Value
p<0.0005
Statistical Significance
p<0.0005
Digital Object Identifier (DOI)
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