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Title:   Author  item
                                            DUNFORD, JAMES - Navy And Marine Corps Public Health Center (NMCPHC)item
                                            STOOPS, CRAIG - Navy And Marine Corps Public Health Center (NMCPHC)item
                                            ESTEP, ALDEN - Department Of Defenseitem
                                            Gibson, Sethitem
                                            RICHARDSON, ALEC - Department Of Defenseitem
                                            WALKER, TODD - Department Of Defenseitem
                                            FAROOQ, MUHAMMAD - Department Of Defenseitem
                                            HOEL, DAVID - Navy And Marine Corps Public Health Center (NMCPHC)item
                                            PLATT, RAYMOND - Department Of Defenseitem
                                            SMITH, VINCENT - Department Of Defenseitem
                                            WIRTZ, ROBERT - Centers For Disease Control And Prevention (CDC) - United Statesitem
                                            KERCE, JERRY - Department Of Defense
  Submitted to: Journal of the American Mosquito Control Association
                                    Publication Type: Peer Reviewed Journal
                                    Publication Acceptance Date: 6/19/2014
                                    Publication  Date: N/A
                                    Citation: N/AInterpretive Summary: This study was conducted to compare the effects of applying mosquito larvicide with a hand-carried thermal fog sprayer versus a traditional backpack cold-mist engine powered sprayer. There is a need to gather evidence that these kinds of sprayers could be useful for dispersing larvicide into and through vegetation and hard-to-reach places and therefore improve upon larvicides dispersed by hand. The study determined that both devices performed equally well and could be an effective part of a program to reduce mosquito larvae in rough terrain.
                                Technical Abstract: Sprayer comparisons and larval morality assays were conducted following SR450 backpack mist blower and Superhawk XP thermal fogger applications of Vectobac® WDG Bacillus thuringiensis israelensis (Bti) de Barjac against Culex quinquefasciatus Say.  Bacillus thuringiensis israelensis was applied at maximum label rate in a 2500 ft2 (232.26 m2) field plot located in north central Florida with containers placed at two heights (ground level and 60 in [1.52 m] above ground) on stakes positioned 10, 20, 30, 40, and 50 ft (3.04, 6.09, 9.14, 12.19, and 15.24 m) from the spray line.  Results indicate that there was no significant (P > 0.05) difference in 24 h and 48 h larval mortality between the two sprayers or between the two heights. There was significant difference (P < 0.05) among the five rows, with mortality continuously decreasing with increasing distance from sprayer.  Both sprayers provided on average >70% larval mortality 10-30 ft (3.04-9.14 m) from the spray line and <60% mortality at 40 and 50 ft (12.19 and 15.24 m).  The data suggest that the SR450 and Superhawk XP may be comparable sprayers for use with Bti to control mosquito larvae.


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