| Signatura : | Biblioteca OET: S4278. NBINA-7444. |
| Autor : | Del Lama, M.A; Lobo-Segura, Jorge A; Soares, A.E.E; Del Lama, S.N. |
| Dirección : | Universidad Federal de Sao Carlos, Departamento de Ciencias da Saude, Rodovia Washington Luiz, Km 235, 13560 Sao Carlos, SP, BR E-mail: jlobo@biologia.ucr.ac.cr. |
| Título: |
Genetic differentiation estimated by isozymic analysis of Africanized honeybee populations from Brazil and from Central America. |
| P.imprenta: | v. 21, no. 4, p. 271-280. Año 1990. |
| Serie: | Apidologie. |
| Descriptores: | ANIMALS; INVERTEBRATES; ARTHROPODS; INSECTS.
HYMENOPTERA; ACULEATA; APOCRITA; APOIDEA; APIDAE; APIS MELLIFERA; APIS MELLIFERA ADANSONII; APIS MELLIFERA SCUTELLATA; AFRICANIZED HONEY BEES; GENETIC VARIATION; GENETIC DIFFERENTIATION; GENE FREQUENCY; ISOZYMES; ENZYMES; ENZYME MARKERS EVIDENCE FOR AFRICANIZATION LEVEL; BIOCHEMICAL VARIATION; GEOGRAPHICAL VARIATION; IZOZYME EVIDENCE FOR AFRICANIZATION LEVEL.
COSTA RICA; HONDURAS; CENTRAL AMERICA; BRAZIL; SOUTH AMERICA.
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| Resumen: | Adult Apis mellifera workers were electrophoretically examined in at least 7 enzyme loci. Five loci were found to exhibit polymorphism (Est-1, Est-3, PGM-1, HK-1 and MDH-1) in the Africanized bee populations from Brazil and from Central America (Costa Rica and Honduras). Genetic variation was not observed for Est-1 and HK-1 in the bee samples from Italy and Germany, and for PGM-1 in the Italian bee sample. Genotypic frequencies at the MDH-1 and HK-1 loci in the Honduras sample are in disagreement with that expected for Hardy-Weinberg equilibrium, suggesting an incipient process of mixture between pre-existing European bees in this country and the Africanized swarms that came from South America. Racial admixture estimates based on MDH-1 data indicate that the Africanization level of Central American honeybees is less than for bees from Southeast and Norther Brazil |