Thirty years after: a survey on the distribution and expansion of Africanized honey bees<i>(Apis mellifera)</i>in Peru

Pérez-Castro, Eleazar E.; May-Itzá, William de Jesús; Quezada‐Euán, José Javier G.

doi:10.1080/00218839.2002.11101071

Cited by 9 publications

(5 citation statements)

References 6 publications

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“…Hybridization between AHB and EHB has been previously reported in Argentina, Brazil, Perú, and Mexico [5,6,19,20]. The current thinking is that when AHB arrives at a location with a resident European population, there is a large amount of hybridization, followed by elimination of European genes over time, perhaps due to selective advantage of African genes under tropical conditions [3].…”

Section: Introductionmentioning

confidence: 99%

Genetic structure of the gentle Africanized honey bee population (gAHB) in Puerto Rico

et al. 2013

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BackgroundThe Africanized honey bee is one of the most spectacular invasions in the Americas. African bees escaped from apiaries in Brazil in 1956, spread over Americas and by 1994 they were reported in Puerto Rico. In contrast to other places, the oceanic island conditions in Puerto Rico may mean a single introduction and different dynamics of the resident European and new-coming Africanized bees.To examine the genetic variation of honey bee feral populations and colonies from different locations in Puerto Rico, we used eight known polymorphic microsatellite loci.ResultsIn Puerto Rico, gAHB population does not show any genetic structure (Fst = 0.0783), and is best described as one honey bee population, product of hybridization of AHB and EHB. The genetic variability in this Africanized population was similar to that reported in studies from Texas. We observed that European private allele frequencies are high in all but one locus. This contrasts with mainland Africanized populations, where European allele frequencies are diminished. Two loci with European private alleles, one on Linkage Group 7, known to carry two known defensiveness Quantitative Trait Loci (QTLs), and the other on Linkage Group 1, known to carry three functionally studied genes and 11 candidate genes associated with Varroa resistance mechanisms were respectively, significantly greater or lower in European allele frequency than the other loci with European private alleles.ConclusionsGenetic structure of Puerto Rico gAHB differs from mainland AHB populations, probably representing evolutionary processes on the island.

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Section: Introductionmentioning

confidence: 99%

Genetic structure of the gentle Africanized honey bee population (gAHB) in Puerto Rico

et al. 2013

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“…Currently, much is known about the genetic status of Africanized honey bee populations in the Americas and the degree of Africanization in most of the countries where these bees are found (Kerr et al, 1982;Lobo et al, 1989;Sheppard et al, 1991aSheppard et al, , 1999Pérez-Castro et al, 2002;Clarke et al, 2002;Diniz et al, 2003;Quezada-Euán et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Morphometric and genetic changes in a population of Apis mellifera after 34 years of Africanization

Francoy¹,

Wittmann²,

Steinhage³

et al. 2009

Genet. Mol. Res.

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AbSTRACT. Though the replacement of European bees by Africanized honey bees in tropical America has attracted considerable attention, little is known about the temporal changes in morphological and genetic characteristics in these bee populations. We examined the changes in the morphometric and genetic profiles of an Africanized honey bee population collected near where the original African swarms escaped, after 34 years of Africanization. Workers from colonies sampled in 1968 and in 2002 were morphometrically analyzed using relative warps analysis and an Automatic Bee Identification System (ABIS). All the colonies had their mitochondrial DNA identified. The subspecies that mixed to form the Africanized honey bees were used as a comparison for the morphometric analysis. The two morphometric approaches showed great similarity of Africanized bees with the African subspecies, Apis mellifera scutellata, corroborating with other markers. We also found the population of 1968 to have the pattern of wing venation to be more similar to A. m. scutellata than the current population. The mitochondrial DNA of European origin, which was very common in the 1968 population, was not found in the current population, indicating selective pressure replacing the European with the African genome in this tropical region. Both morphometric methodologies were very effective in discriminating the A. mellifera groups; the non-linear analysis of ABIS was the most successful in identifying the bees, with more than 94% correct classifications.

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“…Respecto al número de hámulus, en un análisis comparativo entre abejas africanizadas y europeas, se reportó que entre las abejas obreras africanizadas y europeas, estadísticamente no existen diferencias (26) ; los resultados de este trabajo también confirman esa condición al no encontrar el número de hámulus como una característica discriminante entre ambas razas. En relación a que el patrón morfométrico de las abejas africanas es más pequeño, y que las europeas son más grandes (3,27,28), bajo las condiciones de este trabajo se encontró que si bien, la características morfométricas son diferentes estadísticamente, la diferencia en promedio es muy estrecha, lo cual concuerda con diversos investigadores que afirman que las abejas africanizadas son muy difíciles de diferenciar morfométricamente, y que en la actualidad se tienen abejas africanizadas con características más europeas o viceversa (29,30) . Esta similitud morfométrica podría llevar a conclusiones erróneas al emplear métodos morfométricos para la determinación A-E.…”

Section: Discussionunclassified

Análisis morfométrico y molecular (ADNmt) de abejas melíferas (Apis mellifera L.) en el estado de Tabasco, México

Leyva

Nájera

Encino

et al. 2022

Rev. Mex. Cienc. Pecu.

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La apicultura en México se sostiene con subespecies de abejas (Apis mellifera L) europeas y africanizadas. Debido a la dificultad en la diferenciación morfológica de las poblaciones Europeas (E) y Africanizadas (A) de A. mellifera, el objetivo de este trabajo fue realizar un análisis comparativo entre la técnica morfométrica FABIS, contra el diagnóstico empleando el polimorfismo en la longitud de los fragmentos de restricción (RFLP) del ADN mitocondrial (ADNmt). Se emplearon muestras de abejas procedentes de 135 colonias comerciales (CC), 15 colonias pie de cría (CPC) y 3 colonias silvestres (CS) localizados en diferentes municipios del estado de Tabasco (N=153). Ambos métodos de diagnóstico, identificaron a las CPC como europeas y las CS como africanizadas, pero en las CC el método FABIS no pudo definir 9 colonias, dándolas como sospechosas (S) y otras 50 no coincidieron con el resultado del método molecular, por lo que, en total ambos métodos coincidieron en 94 identificaciones (61.44 %). El agrupamiento bayesiano basado en el análisis de las doce variables morfométricas mostró que las categorías A-CC y E-CC, forman un grupo cercano a la categoría E-CPC; mientras que la categoría A-CS presentó la mayor distancia formando un grupo aislado. Por lo tanto, abejas de CC tienen características morfométricas tendientes a abejas E-CPC. Este trabajo también pretende ser una contribución a la falta de registros sobre la africanización en el estado de Tabasco. Se recomienda emplear el método molecular para discriminar entre abejas E/A, por no estar afectado por los factores ambientales.

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Thirty years after: a survey on the distribution and expansion of Africanized honey bees(Apis mellifera)in Peru

Cited by 9 publications

References 6 publications

Genetic structure of the gentle Africanized honey bee population (gAHB) in Puerto Rico

Genetic structure of the gentle Africanized honey bee population (gAHB) in Puerto Rico

Morphometric and genetic changes in a population of Apis mellifera after 34 years of Africanization

Análisis morfométrico y molecular (ADNmt) de abejas melíferas (Apis mellifera L.) en el estado de Tabasco, México

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