caa a22 4500 388093293 CHVBK 20180307125257.0 cr unu---uuuuu 161130e199906 xx s 000 0 eng 10.4039/Ent131363-3 doi S0008347X00009974 pii (NATIONALLICENCE)cambridge-10.4039/Ent131363-3 CHEMICAL ACARICIDES IN APIS MELLIFERA (HYMENOPTERA: APIDAE) COLONIES; DO THEY CAUSE NONLETHAL EFFECTS? [Elektronische Daten] Colonies of the honey bee, Apis mellifera Linnaeus, infested with the parasitic mites Acarapis woodi (Rennie) (Acari: Tarsonemidae) or Varroa jacobsoni Oudemans (Acari: Varroidae) require acaricidal treatment to control infestations that could affect colony growth and honey production. We investigated the effects of three acaricides, fluvalinate (formulated as Apistan®), formic acid, and menthol, on honey bee colony population growth, foraging activity, adult worker longevity, and honey production. Effects of in-hive treatments of Apistan® and formic acid were measured by examining colony weight gain, brood survival, sealed-brood area, emerged-bee weight, number of returning foragers, pollen-load weight, and worker longevity. These characteristics were not different between fluvalinate-treated colonies, formic-acid-treated colonies, and control colonies. Adult bee population, brood survival, number of returning foragers, and honey production did not vary among menthol-treated colonies, formic-acid-treated colonies, and control colonies. Sealed-brood area was lower in formic-acid-treated colonies than control colonies, but not different from menthol-treated colonies. Although not statistically significant, formic-acid-treated colonies experienced lower honey production than both menthol-treated and control colonies. Numbers of workers attending the queen in the retinue and queen behaviour patterns were not different after colonies were treated with formic acid. Copyright © Entomological Society of Canada 1999 Westcott Lynn C. Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6 Winston Mark L. Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6 The Canadian Entomologist Cambridge University Press 131/3(1999-06), 363-371 0008-347X 131:3<363 1999 131 TCE https://doi.org/10.4039/Ent131363-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.4039/Ent131363-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Westcott Lynn C. Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6 NATIONALLICENCE 700 1- Winston Mark L. Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6 NATIONALLICENCE 773 0- The Canadian Entomologist Cambridge University Press 131/3(1999-06), 363-371 0008-347X 131:3<363 1999 131 TCE CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge