The Inside Story: Internal Colony Dynamics of Africanized Bees

Harlington, TX, July 19 (AP)—Federal agricultural officials say that the honey bees that killed an 82-year-old rancher last week were the Africanized variety known as "killer bees." "Our lab has confirmed that the bees are Africanized," said Kim Kaplan, a Spokeswoman for the Federal Department of Agriculture in Greenbelt, MD. Final autopsy results are not yet available, but the pathologist who did the autopsy listed the preliminary cause of death as acute fluid buildup in the lungs caused by insect stings. If the cause of death is confirmed, the rancher, Lino Lopex, would be the first person killed by Africanized bees in the United States since the aggressive variety migrated into Texas in 1990. Harlington, TX, in South Texas, is about 15 miles from the Mexican border. Mr. Lopez apparently tried to drive the bees out of a wall in an abandoned house by poking the hive with a stick wrapped with a burning burlap sack. He was dead on arrival at the hospital, with about 40 stingers still attached to his body, officials said.

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Longevity of cross-fostered honey bee workers (Apis mellifera) of European and Africanized races

Canadian Journal of Zoology ◽

10.1139/z81-214 ◽

1981 ◽

Vol 59 (8) ◽

pp. 1571-1575 ◽

Cited By ~ 27

Author(s):

Mark L. Winston ◽

Susan J. Katz

Keyword(s):

Apis Mellifera ◽

South America ◽

Honey Bee ◽

Race Differences ◽

The Other ◽

Partial Explanation ◽

Africanized Bees ◽

Honey Bee Workers

Longevities of two races of honey bee workers, European and Africanized, were compared both within colonies of their own races and within colonies of the other race. Differences in longevity were found which were likely due to inherited differences between workers of the two races. The age at which workers began foraging was one factor important in determining longevity. These results may provide a partial explanation for the success and impact of Africanized bees in South America, and also suggest that the northerly spread of these bees could be limited by worker life spans.

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Varroa jacobsoni infestation of adult Africanized and Italian honey bees (Apis mellifera) in mixed colonies in Brazil

Genetics and Molecular Biology ◽

10.1590/s1415-47571999000300006 ◽

1999 ◽

Vol 22 (3) ◽

pp. 321-323 ◽

Cited By ~ 12

Author(s):

Geraldo Moretto ◽

Leonidas João de Mello Jr.

Keyword(s):

Apis Mellifera ◽

Honey Bee ◽

Honey Bees ◽

Mite Infestation ◽

Varroa Jacobsoni ◽

Africanized Honey Bees ◽

African Honey Bees ◽

Africanized Bees ◽

Bee Colonies ◽

Different Levels

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.

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