Dominance of African racial ancestry in honey bee colonies of Mexico 30 years after the migration of hybrids from South America
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View abstract on PubMed
Summary
This summary is machine-generated.Africanized honey bees are genetically diverse and established in Mexico, challenging eradication efforts. Their ancestry varies by management and region, necessitating their inclusion in sustainable breeding programs.
Area Of Science
- Genetics
- Zoology
- Ecology
Background
- Africanized honey bees, a hybrid of African and European subspecies, are an invasive species impacting beekeeping.
- Despite eradication programs in Mexico since 1986, Africanized honey bee populations persist.
- Precise data on genetic introgression and ancestry patterns in Mexican honey bees were lacking.
Purpose Of The Study
- To determine the maternal and paternal racial ancestry of managed and feral honey bees in Mexico.
- To assess the influence of beekeeping management, region, altitude, and latitude on ancestry distribution.
- To evaluate the effectiveness of current management and eradication strategies.
Main Methods
- Analysis of mitochondrial DNA (mtDNA, COI-COII intergenic region) and 94 nuclear ancestry-informative SNPs.
- Sampling across five distinct beekeeping regions in Mexico.
- Comparison of ancestry proportions between managed and feral honey bee populations.
Main Results
- Mexican honey bees exhibit predominantly African ancestry, with significant variation based on management, region, and latitude.
- Managed honey bees showed higher European ancestry proportions (mtDNA and nuclear) than feral populations.
- Lower latitude regions displayed higher African nuclear ancestry; managed bees (except Yucatan) had more nuclear than mtDNA African ancestry.
Conclusions
- Africanized honey bee populations in Mexico are genetically diverse and well-established.
- Current management and government programs have limitations in controlling Africanization.
- Incorporating Africanized honey bee lineages is crucial for sustainable beekeeping in Mexico.
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