Morphometric isozymic and mitochondrial variability of Africanized honeybees in Costa Rica

Wing morphometry, isozymic variation and mitochondrial RFLPs were studied in samples of feral Africanized bees collected at three different locations in Costa Rica, two of them in the lowlands (Guanacaste and Golfito regions) and the other in the Central Valley. These data revealed a predominantly A...

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Bibliographic Details
Published in:Heredity 1995-08, Vol.75 (2), p.133-141
Main Author: Lobo, Jorge A
Format: Article
Language:English
Subjects:
Animals
Apidae
Apis mellifera scutellata
Biological and medical sciences
Biomedical and Life Sciences
Biomedicine
Cytogenetics
Ecology
Evolutionary Biology
Fundamental and applied biological sciences. Psychology
Genetics of eukaryotes. Biological and molecular evolution
Human Genetics
Hymenoptera
Invertebrata
original-article
Plant Genetics and Genomics
Population genetics, reproduction patterns
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Summary:Wing morphometry, isozymic variation and mitochondrial RFLPs were studied in samples of feral Africanized bees collected at three different locations in Costa Rica, two of them in the lowlands (Guanacaste and Golfito regions) and the other in the Central Valley. These data revealed a predominantly African origin at all locations. However, significant heterogeneity was found between the two lowland sites and the Central Valley for some isozyme markers as well as for the RFLPs considered in this study. Both isozymic and mitochondrial DNA European markers were more frequent in the Central Valley. This could be the result of different opportunities for European gene introgression at the beginning of the migration of Africanized honeybees. It is shown that different gene frequencies of mitochondrial and nuclear European genetic markers may exist in Africanized bee populations, and that this may result from different selection pressures among colonies with African and European queens.
ISSN:0018-067X
1365-2540
DOI:10.1038/hdy.1995.116