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Related Experiment Video

Updated: Mar 1, 2026

Methods for Comparing Nutrients in Beebread Made by Africanized and European Honey Bees and the Effects on Hemolymph Protein Titers

Methods for Comparing Nutrients in Beebread Made by Africanized and European Honey Bees and the Effects on Hemolymph Protein Titers

Published on: March 17, 2015

POPULATION DIFFERENTIATION AND RACIAL ADMIXTURE IN THE AFRICANIZED HONEYBEE (APIS MELLIFERA L.).

Jorge A Lobo¹, M A Del Lama², M A Mestriner¹

¹Faculdade de Medicina de Ribeirão Preto, Departamento de Genética, Av. Bandeirantes, 3900, 14049-Ribeirão Preto-SP, BRAZIL.

Evolution; International Journal of Organic Evolution

|June 1, 2017

Summary

Africanized honeybees show genetic differences and racial admixture across Brazil and Uruguay. African alleles are more common in the north, with European gene flow potentially influencing southern populations.

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Last Updated: Mar 1, 2026

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Area of Science:

* Entomology
* Population Genetics
* Apiculture

Background:

* Africanized honeybees are a hybrid of European and African subspecies.
* Understanding their genetic diversity and admixture is crucial for beekeeping and pest management.

Purpose of the Study:

* To assess interpopulational differentiation and racial admixture in Africanized honeybees.
* To analyze genetic variation using enzyme loci and morphometric data.
* To investigate the geographic patterns of genetic makeup.

Main Methods:

* Genotyping of worker bees from Brazil and Uruguay at 10 enzyme loci.
* Morphometric analysis of forewing measurements.
* Calculation of racial admixture based on Mdh locus data.

Main Results:

* Significant genetic differences observed among populations, particularly at the Mdh locus.
* Mdh allele frequency increased from north to south, with higher prevalence in Uruguay.
* Racial admixture varied significantly across Brazilian regions, with a higher proportion of African alleles (Apis mellifera adansonii).

Conclusions:

* Africanized honeybee populations exhibit incipient differentiation.
* Selection and preferential mating likely contributed to the observed genetic patterns.
* Increased gene flow from European honeybees may influence southern Brazilian populations.