caa a22 4500 469061308 CHVBK 20180323132858.0 cr unu---uuuuu 170328e19920801xx s 000 0 eng 10.1007/BF01275520 doi (NATIONALLICENCE)springer-10.1007/BF01275520 Nocturnal dispersal by female Acarapis woodi in honey bee ( Apis mellifera ) colonies [Elektronische Daten] [J. Pettis, W. Wilson, F. Eischen] Comparisons were made between the infestation levels of the honey bee tracheal miteAcarapis woodi (Rennie) in newly emerged honey bees (Apis mellifera L.) exposed for 12 h during the daytime or nighttime in mite-infested bee colonies. Bees exposed during the night harbored a significantly higher number of mites (718) when compared with the daytime bees (88 mites) (n=14 day/night cycles utilizing 33 colonies). On 4 days of an 8-day study, three test colonies were closed during the daytime to eliminate foraging flights. Thus equal numbers of bees were present in the colonies during the day and night sample periods. These 4 flightless days were compared to 4 free-flight days and mite dispersal rates were not significantly different. Additionally, the movement of bees on the combs of four glass-walled observation hives was quantified on 10 days at 08∶00, 12∶00, 16∶00, 20∶00, 24∶00 and 04∶00 h. Bee movement at 24∶00 and 04∶00 h was significantly lower than the other observation times. Movement of host bees may be one factor involved in the increased nighttime mite dispersals. These findings do not support the hypothesis that the absence of foraging bees during the day reduces the bee to bee contact time, thus reducing mite dispersals between host bees. Differential diurnal activity levels between host bees and mite parasites was demonstrated. The exact role of host-bee behavior and/or mite behavior in the nighttime dispersal patterns observed, remains for further investigation. Elsevier Science Publishers B.V, 1992 Pettis J. USDA-ARS Honey Bee Research Unit, Weslaco, TX, USA aut Wilson W. USDA-ARS Honey Bee Research Unit, Weslaco, TX, USA aut Eischen F. Texas A&M Experiment Station, Weslaco, TX, USA aut Experimental & Applied Acarology Kluwer Academic Publishers 15/2(1992-08-01), 99-108 0168-8162 15:2<99 1992 15 10493 https://doi.org/10.1007/BF01275520 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01275520 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pettis J. USDA-ARS Honey Bee Research Unit, Weslaco, TX, USA aut NATIONALLICENCE 700 1- Wilson W. USDA-ARS Honey Bee Research Unit, Weslaco, TX, USA aut NATIONALLICENCE 700 1- Eischen F. Texas A&M Experiment Station, Weslaco, TX, USA aut NATIONALLICENCE 773 0- Experimental & Applied Acarology Kluwer Academic Publishers 15/2(1992-08-01), 99-108 0168-8162 15:2<99 1992 15 10493 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer