Successful Biological Invasion Despite Genetic Load
Author Information
Author(s): Zayed Amro, Constantin Şerban, A. Packer Laurence
Primary Institution: Department of Biology, York University, Toronto, Ontario, Canada
Hypothesis
How can founder populations with reduced genetic diversity colonize and dominate new habitats?
Conclusion
The solitary bee Lasioglossum leucozonium successfully invaded North America despite experiencing a severe genetic bottleneck.
Supporting Evidence
- L. leucozonium experienced a severe bottleneck during its introduction to North America.
- Introduced populations had very low levels of genetic diversity compared to the French population.
- Modeling analyses suggest that the founder population consisted of a very small number of propagules.
Takeaway
A tiny number of bees can start a new population, even if they have genetic problems that usually make it hard to survive.
Methodology
Population genetic analysis using microsatellite markers and mitochondrial gene sequencing.
Potential Biases
Potential biases in sampling locations and sizes could affect the results.
Limitations
The study may underestimate genetic diversity in the immigrants' region of origin due to sampling methods.
Participant Demographics
The study focused on 254 female Lasioglossum leucozonium from 12 North American populations and one French population.
Statistical Information
P-Value
0.0039
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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