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31.
Summary This study demonstrates polymorphisms in both the length and in the restriction enzyme cleavage sites of honeybee mitochondrial DNA (mtDNA). The levels of variation are typical of those found in other metazoan species. These polymorphisms are potentially useful for the identification of Africanized bees in the western hemisphere and for study of honeybee phylogenetics. 相似文献
32.
E. E. Southwick 《Cellular and molecular life sciences : CMLS》1985,41(11):1486-1487
Summary Wax comb was found to have a thermal conductivity of 0.36×10–3 cal/cm sec °C. At low air temperatures, honey bees,Apis mellifera L., form clusters inbetween the combs in their nests. The combs provide insulation and the bee behavior actually increases the insulating effectiveness of the combs. When they form a compact living layer over the wax comb, the conductivity can be reduced to 0.065×10–3 cal/cm see °C. Some aspects of the role of the wax comb in heat balance are examined in this paper. 相似文献