Mating Success in Ash Hybrid Zones
Author Information
Author(s): Gérard Pierre R, Klein Etienne K, Austerlitz Frédéric, Fernández-Manjarrés Juan F, Frascaria-Lacoste Nathalie
Primary Institution: Université Paris-Sud
Hypothesis
How do dispersal, temporal isolation, and assortative mating affect male mating success in a hybrid zone of ash species?
Conclusion
Long-distance gene flow is insufficient to overcome the effects of assortative mating and selfing, which help maintain the hybrid population.
Supporting Evidence
- High pollen immigration rates were detected in the hybrid zone.
- Early flowering hybrids had the highest male mating success.
- Phenological assortative mating was observed, affecting mating patterns.
- Selfing rates were estimated to be around 10% in the population.
- Dispersal kernel analysis indicated fat-tailed dispersal patterns.
Takeaway
This study shows that in a group of ash trees, those that flower early have more success in mating, which helps them survive better, especially as the climate changes.
Methodology
Real-time pollen flow analysis was used to study the influence of various factors on male mating success in a hybrid zone of two ash species.
Potential Biases
Potential biases from genotyping errors could affect the estimation of mating success.
Limitations
The study may not account for all environmental factors affecting mating success and relies on specific sampling methods.
Participant Demographics
The study involved a population of 269 flowering adult trees from two ash species and their hybrids.
Statistical Information
P-Value
<0.01
Confidence Interval
[0.78–0.85]
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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