Hybridization between European and Africanized honeybees (Apis mellifera L.) in tropical Yucatan, Mexico. I. Morphometric changes in feral and managed colonies

Quezada‐Euán, José Javier G.; Medina-Medina, Luis A.

doi:10.1051/apido:19980608

Cited by 27 publications

(20 citation statements)

References 21 publications

(18 reference statements)

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“…Other studies have also reported rapid changes in bee morphology at the beginning of the Africanization process at other sites (Boreham and Roubik, 1987;Quezada-Euán and Medina, 1998). Aside from ecological reasons for such dominance, through competitive advantages of Africanized bees (Gonçalves et al, 1991;De Jong, 1996), there appears to be genetic dominance, since based on our morphometric findings the F 1 generation is clearly closer to the African parental (Table 1, Figure 3).…”

Section: Discussionsupporting

confidence: 72%

Rapid morphological changes in populations of hybrids between Africanized and European honey bees

Francoy¹,

Gonçalves²,

Jong³

2012

Genet. Mol. Res.

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Section: Discussionsupporting

confidence: 72%

Rapid morphological changes in populations of hybrids between Africanized and European honey bees

Francoy¹,

Gonçalves²,

Jong³

2012

Genet. Mol. Res.

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“…1996). After Africanization, feral bees are now present in the area probably in similar densities to managed colonies (Quezada‐Euán & Medina 1998), and these have higher frequencies of African mitotypes than domestic bees (Fig. 2, P = 0.01).…”

Section: Resultsmentioning

confidence: 93%

“…Other studies in this region have revealed a consistent increase in the level of Africanization of managed colonies over time (Quezada‐Euán et al . 1996; Quezada‐Euán & Medina 1998). African‐ and European‐derived mitotypes are now associated with a diverse array of morphotypes.…”

Section: Introductionmentioning

confidence: 99%

Origin of honeybees (Apis mellifera L.) from the Yucatan peninsula inferred from mitochondrial DNA analysis

et al. 2001

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Honeybees (Apis mellifera L.) sampled at sites in Europe, Africa and South America were analysed using a mitochondrial DNA restriction fragment length polymorphism (RFLP) marker. These samples were used to provide baseline information for a detailed analysis of the process of Africanization of bees from the neotropical Yucatan peninsula of Mexico. Radical changes in mitochondrial haplotype (mitotype) frequencies were found to have occurred in the 13-year period studied. Prior to the arrival of Africanized bees (1986) the original inhabitants of the Yucatan peninsula appear to have been essentially of southeastern European origin with a smaller proportion having northwestern European ancestry. Three years after the migration of Africanized bees into the area (1989), only very low levels of maternal gene flow from Africanized populations into the resident European populations had occurred. By 1998, however, there was a sizeable increase in the proportion of African mitotypes in domestic populations (61%) with feral populations having 87% of mitotypes classified as African derived. The results suggest that the early stages of Africanization did not involve a rapid replacement of European with African mitotypes and that earlier studies probably overestimated the prevalence of African mitotypes.

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“…Studies on the population structure of honeybees in areas undergoing Africanization at elevations above 2 500 have not been conducted and Peru gives a unique opportunity to document such a situation. Moreover, the presence of diverse densities of resident European colonies prior to the invasion of African-derived honeybees may also influence the degree of admixture between both bee types depending on numerical competition (Quezada-Euán and Hinsull, 1995;Quezada-Euán and Medina, 1998).…”

Section: Introductionmentioning

confidence: 99%

Hybridization between European and African-derived honeybee populations (Apis mellifera) at different altitudes in Per�

2003

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-The current status of admixture between Apis mellifera of African and European origin was studied in populations from different altitudinal regions of Perú. Worker bees from 7 altitudinal regions were analysed by morphometrics and mtDNA RFLPs. Our results showed that the rates of admixture between African-derived and resident European populations have depended on the altitude of the region. Our finding of hybrid colonies at elevations above 2 500 m supports the hypothesis that climate alone may not restrain the northern limit of the distribution of African-derived honeybees in the Americas. We conclude that introgressive hybridization between African and European derived honeybees best explains the current patterns of distribution of morphotypes and mitotypes across the different regions of Peru.Africanization / hybridization / Apis mellifera / mtDNA / morphometrics / Peru

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Hybridization between European and Africanized honeybees (Apis mellifera L.) in tropical Yucatan, Mexico. I. Morphometric changes in feral and managed colonies

Abstract: -Morphometrics of feral and managed honeybee colonies collected from tropical Yucatan, Mexico between 1986 and 1996, were

Cited by 27 publications

References 21 publications

Rapid morphological changes in populations of hybrids between Africanized and European honey bees

Rapid morphological changes in populations of hybrids between Africanized and European honey bees

Origin of honeybees (Apis mellifera L.) from the Yucatan peninsula inferred from mitochondrial DNA analysis

Hybridization between European and African-derived honeybee populations (Apis mellifera) at different altitudes in Per�

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