Anita Marguerite Collins

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Since the development of instrumental insemination of honey bee (Apis mellifera) queens in the 1930s, there has been interest in the evaluation and in vitro storage of semen. Several fluorescent stains, when used in combination, have been effectively used to assess sperm viability in mammalian and avian species. Our objectives were to test two combinations(More)
Honey bee (Apis mellifera L.) queens mate early in life and store sperm for years. Male bees likely contribute significantly to sperm survival. Proteins were extracted from seminal vesicles and semen of mature drones, separated by electrophoresis, and analysed by peptide mass fingerprinting. Computer searches against three databases, general species, honey(More)
Honey bee (Apis mellifera) sperm remains viable in the spermatheca of mated female honey bees for several years. During this time, the sperm retains respiratory activity, placing it at risk of the damaging effects of reactive oxygen species common to many biological processes. Antioxidative enzymes might help reduce this damage. Here we use quantitative(More)
The development of practical techniques for the storage of honey bee, Apis mellifera L., semen would significantly improve our ability to breed for desirable genotypes and maintain genetic diversity in populations. Artificial insemination of queens has been possible for some time, but the semen used is usually freshly collected, or held for < 1 wk at room(More)
Nine compounds identified from honeybee,Apis mettifera L., sting extracts and one compound identified from the honeybee mandibular gland were evaluated in a standardized laboratory test for their effectiveness in eliciting an alarm response from caged honeybees. Two,n-decyl acetate and benzyl alcohol, were judged ineffective as alarm pheromones. The(More)
Social insects are frequent targets for pathogens and have consequently evolved diverse ways to minimize disease impacts, one of which is the innate immune response. Here, a 4-generation mating scheme was carried out to assess heritability and variation in a honeybee (Apis mellifera) immune trait, the production of the key antimicrobial peptide abaecin.(More)
Quantitative trait loci (QTL) mapping procedures were used to identify loci that influence the levels of alarm pheromones found in the stinging apparatus of worker honeybees. An F1 queen was produced from a cross between a queen of European origin and a drone descended from an African subspecies. Haploid drones from the hybrid queen were individually(More)
Twelve compounds identified from honeybee,Apis mellifera L., sting extracts were evaluated in a standardized laboratory test for their effectiveness in eliciting an alarm response from caged worker honeybees. Two-1-decanol and phenol-were judged ineffective as alarm pheromones. The other ten-1-butanol, isopentyl acetate, isopentyl alcohol, 1-hexanol,(More)
Mitochondrial DNA (mtDNA) haplotypes have been commonly used to determine honeybee subspecies relationships. To see if these markers would also be useful for comparisons of other Hymenoptera, we collected workers of six local species: Vespa crabro, the European hornet; Bombus impatiens, a bumblebee; Vespula germanica, the German yellow jacket; Polistes(More)
Normal mating of honey bee (Apis mellifera L.) queens and drones results in extreme polyandry. Larger queens are reported to produce more brood, but do they also store more semen? Measurements of queen weight, spermatheca weight and volume, and numbers of sperm in the spermatheca were made on normally reared queens and queens exposed to miticide from early(More)