Influence of resistant honey bee hosts on the life history of the parasite Acarapis woodi |
| |
Authors: | Robert G. Danka José D. Villa |
| |
Affiliation: | (1) Agricultural Research Service, Honey Bee Breeding, Genetics and Physiology Laboratory, US Department of Agriculture, 1157 Ben Hur Road, 70820 Baton Rouge, LA, USA |
| |
Abstract: | Non-infested, young adult honey bees (Apis mellifera L.) of two stocks were exposed to tracheal mites (Acarapis woodi (Rennie)) in infested colonies to determine how divergent levels of susceptibility in host bees differentially affect components of the mite life history. Test bees were retrieved after exposure and dissected to determine whether resistance is founded on the reduced success of gravid female (foundress) mites to enter the host tracheae, on the suppressed reproduction by foundress mites once established in host tracheae or on both. Cohorts of 30–60 bees from each of ten resistant colonies and eight susceptible colonies were tested in eight trials (three to five colonies per stock per trial) having exposure durations of 4, 9 or 21 days. The principal results were that lower percentages of resistant bees than of susceptible bees routinely became infested by foundress mites, individual infested susceptible bees often had more foundress mites than individual infested resistant bees did and mite fecundity was similar in both host types. The infestation percentage results corresponded well with similar results from a prior field test of these stocks and, thus, suggest that the bioassay is useful for assessing honey bee resistance to A. woodi. |
| |
Keywords: | Apis mellifera Acarapis woodi resistance honey bee tracheal mite bioassay |
本文献已被 SpringerLink 等数据库收录! |
|