DEVELOPMENT OF AN ETHANOL MODEL USING SOCIAL INSECTS: IV. INFLUENCE OF ETHANOL ON THE AGGRESSION OF AFRICANIZED HONEY BEES (APIS MELLIFERA L.)

2004 ◽  
Vol 94 (3) ◽  
pp. 1107
Author(s):  
CHARLES I. ABRAMSON
2004 ◽  
Vol 94 (3_suppl) ◽  
pp. 1107-1115 ◽  
Author(s):  
Charles I. Abramson ◽  
Aaron J. Place ◽  
Italo S. Aquino ◽  
Andrea Fernandez

Experiments were designed to determine whether ethanol influenced aggression in honey bees. Two experiments are reported. In Exp. 1, harnessed honey bees were fed a 1%, 5%, 10%, or 20% ethanol solution. Two control groups received either a sucrose solution only or no pretreatment, respectively. The dependent variable was the number of sting extensions over 10 min. Analysis showed that aggression in harnessed bees was not influenced by prior ethanol consumption. Because there was some suspicion that the extension of the sting apparatus may be hindered by harnessing, and the authors wanted to use a design that increased ecological validity, Exp. 2 was conducted with free-flying bees. Sucrose or 20% ethanol solutions were placed in front of beehives, and the number of stings on a leather patch dangled in front of the hive served as the dependent variable. The experiment was terminated after 5 hr. because bees exposed to ethanol became dangerously aggressive. A unique aspect of the study was that Africanized honey bees were used.


Author(s):  
Vagner de Alencar Arnaut de Toledo ◽  
Regina Helena Nogueira-Couto

This experiment was carried out to study the internal temperature regulation of a colony of Africanized honey bees (AFR), compared with hybrid Caucasian (CAU), Italian (ITA), and Carniolan (CAR) bees, during the period of one year and different size hives located in a sub-tropical region. The instant internal temperature, 33.7 ± 1.5° C for the AFR, 33.5 ± 1.4° C for the CAU, 33.7 ± 1.5° C for the ITA and 33.8 ± 1.4° C for the CAR, did not show any significant difference (P>0.05). The maximum temperature (36.1 ± 2.3° C) was statistically different (P<0.05) from the minimum (27.6 ± 5.3° C). There was no difference (P>0.05) in the mean internal temperature, between the nucleus (31.7 ± 6.3° C) and the brood nest (32.1 ± 5.3° C) measured between two and four o'clock in the afternoon.


1999 ◽  
Vol 22 (3) ◽  
pp. 321-323 ◽  
Author(s):  
Geraldo Moretto ◽  
Leonidas João de Mello Jr.

Different levels of infestation with the mite Varroa jacobsoni have been observed in the various Apis mellifera races. In general, bees of European races are more susceptible to the mite than African honey bees and their hybrids. In Brazil honey bee colonies are not treated against the mite, though apparently both climate and bee race influence the mite infestation. Six mixed colonies were made with Italian and Africanized honey bees. The percentage infestation by this parasite was found to be significantly lower in adult Africanized (1.69 ± 0.44) than Italian bees (2.79 ± 0.65). This ratio was similar to that found in Mexico, even though the Africanized bees tested there had not been in contact with varroa, compared to more than 20 years of the coexistence in Brazil. However, mean mite infestation in Brazil on both kinds of bees was only about a third of that found in Mexico.


Apidologie ◽  
2008 ◽  
Vol 39 (5) ◽  
pp. 523-530 ◽  
Author(s):  
Oscar Zárate ◽  
Chavier De Araujo-Freitas ◽  
Luis A. Medina ◽  
Alfonso Velásquez ◽  
J. Javier G. Quezada-Euán

2020 ◽  
Vol 5 (1) ◽  
pp. 174-186
Author(s):  
Rafael Salim Nassar ◽  
Anderson Cornationi Lopez ◽  
Lilian dos Santos Babolin ◽  
Regina Célia Gentil ◽  
Antonio Carlos Pedroso de Lima

PEDIATRICS ◽  
1994 ◽  
Vol 94 (1) ◽  
pp. 115-117
Author(s):  
Barbara K. Ariue

African honey bees, Apis mellifera scutellata (formerly adsonii) were imported to Brazil in 1956 to introduce a strain of bees with increased honey production which were more suited for the tropical climate.1,2 A year later, 26 African queen bees and their accompanying colonies accidentally escaped.1,2 The African queen bees soon began mating with established European bee races resulting in the hybrid Africanized honey bees.2 Like the pure African bees, the Africanized bees are more defensive with a greater tendency to sting than European bees.3 They respond quickly to the slightest disturbance of their nest and can send out many thousands of bees.


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