Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 4 of 4
Full-Text Articles in Entire DC Network
Diet-Selection Ecology Of Tropically And Temperately Adapted Honey Bees, Robert G. Danka, Richard L. Hellmich, Thomas E. Rinderer, Anita M. Collins
Diet-Selection Ecology Of Tropically And Temperately Adapted Honey Bees, Robert G. Danka, Richard L. Hellmich, Thomas E. Rinderer, Anita M. Collins
Richard L Hellmich
Colonies of tropically adapted (Africanized) honey bees had greater numbers and higher percentages of pollen foragers than did temperately adapted (European) honey bees. European colonies had greater overall foraging activity. The number of pollen gatherers in Africanized nests was greater throughout the daily foraging cycle, and was especially high early in the morning when pollen was most abundant. Africanized colonies fielded more pollen collectors even when levels of stimuli which are known to regulate pollen foraging were altered experimentally. Collectively, the foraging patterns resulted in larger stores of pollen in Africanized honey bee nests, while European bee nests typically had …
Responses Of Africanized Honey Bees Hymenoptera Apidae To Pollination Management Stress, Robert G. Danka, Thomas E. Rinderer, Anita M. Collins, Richard L. Hellmich Ii
Responses Of Africanized Honey Bees Hymenoptera Apidae To Pollination Management Stress, Robert G. Danka, Thomas E. Rinderer, Anita M. Collins, Richard L. Hellmich Ii
Richard L Hellmich
Fifteen Africanized (AHB) and 15 European (EHB) honey bee, Apis mellifera L., colonies were moved to six different crop sites during a 2-mo test in Venezuela. Several problems with AHB suggested that these bees may be difficult to use commerically for pollination. Debilitating reductions of adult populations occurred more frequently among AHB colonies (n = 12) than among EHB colonies (n = 5). In 6 of 11 tests of defensive response, targets were stung more by AHB colonies than by EHB colonies; no differences were found in the five other stinging comparisons. Also during defense tests, AHB colonies typically had …
Differential Drone Production By Africanized And European Honey Bee Colonies, Thomas E. Rinderer, Anita M. Collins, Richard L. Hellmich Ii, Robert G. Danka
Differential Drone Production By Africanized And European Honey Bee Colonies, Thomas E. Rinderer, Anita M. Collins, Richard L. Hellmich Ii, Robert G. Danka
Richard L Hellmich
The numbers of mature drones leaving colonies of Africanized and European honey bees were counted after they had been trapped at colony entrances. Two apiaries, each with 10 European and 10 Africanized colonies, were trapped for drones exiting individual colonies on 3 separate days at two week intervals. Africanized colonies maintained far more drones and far more Africanized drones parasitized European colonies than vice versa. These two factors resulted in 91% of the drones leaving colonies in the apiaries being Africanized.
Improved Simple Techniques For Identifying Africanized And European Honey Bees, Thomas E. Rinderer, H. Allen Sylvester, Steven M. Buco, Vicki A. Lancaster, Elton W. Herbert, Anita M. Collins, Richard L. Hellmich Ii
Improved Simple Techniques For Identifying Africanized And European Honey Bees, Thomas E. Rinderer, H. Allen Sylvester, Steven M. Buco, Vicki A. Lancaster, Elton W. Herbert, Anita M. Collins, Richard L. Hellmich Ii
Richard L Hellmich
Eight simple techniques based on discriminant statistical procedures are presented to identify Africanized and European bees in the Americas. These techniques arc based on measurements of forewing lengths, the wet and dry weights of degastered bees, and femur lengths. Improved methodologies and statistical procedures result in many more correct identifications at high probabilities of class membership.