title: New Miticides for Integrated Pest Management of Varroa destructor (Acari: Varroidae) in Honey Bee Colonies on the Canadian Prairies.
abstract: Varroa destructor Anderson and Trueman 2000 (Acari: Varroidae) is an ectoparasitic mite of the honey bee, Apis mellifera L. (Hymenoptera: Apidae). Honey bee colonies require extensive management to prevent mortality caused by varroa mites and the viruses they vector. New miticides (Thymovar and HopGuard) to manage varroa mites were evaluated during the spring and fall treatment windows of the Canadian prairies to determine their effectiveness as part of an integrated management strategy. Thymovar and HopGuard were evaluated alongside the currently used industry standards: Apivar and formic acid. Results demonstrated that Apivar and formic acid remain effective V. destructor management options under spring and fall conditions. Applications of Thymovar during spring were associated with a reduction in brood area, and therefore should be limited to the fall season. The miticide HopGuard was not effective in managing V. destructor, and alteration of the current delivery system is necessary. This study demonstrates the potential for new effective treatment options to supplement currently used V. destructor integrated pest management systems.
authors.affiliation: Alberta Agriculture and Rural Development, Lethbridge Agriculture Centre, 5401 - 1st Ave., South, Lethbridge, AB, Canada T1J 4V6. lynae@ualberta.ca.
authors.forename: L P
authors.initials: LP
authors.lastname: Vandervalk
authors.affiliation: Alberta Agriculture and Rural Development, Crop Diversification Centre North, 17507 - Fort Rd.,NW,Edmonton, AB, Canada T5Y6H3.
authors.forename: M E
authors.initials: ME
authors.lastname: Nasr
authors.affiliation: Deceased.
authors.forename: L M
authors.initials: LM
authors.lastname: Dosdall
mesh_terms: D056810:Acaricides / Q000627:therapeutic use; D000818:Animals; D001516:Bees / Q000469:parasitology*; D027582:Humulus; D008924:Mite Infestations / Q000188:drug therapy / Q000662:veterinary*; D010571:Pest Control; D010936:Plant Extracts / Q000627:therapeutic use; D013943:Thymol / Q000627:therapeutic use; D057077:Varroidae
chemical_list: D056810:Acaricides; D010936:Plant Extracts; D013943:Thymol
keywords: Apis mellifera; Apivar; Varroa destructor; formic acid; integrated pest management