Tolerance of the planarian Dugesia tigrina (Tricladida: Turbellaria) to pesticides and insect growth regulators in a small-scale field study.
Two insect growth regulators, methoprene and a benzyl-1,3,benzodioxole (J-2931), had no detrimental effects on Dugesia tigrina under field conditions. Three other compounds, resmethrin, temephos, and cyromazine, had only minimal effects. Asexual multiplication among these planarian predators exceeded 68% when combined with Culex quinquefasciatus larvae and methoprene at different concentration levels. Also, this combined treatment with D. tigrina and methoprene resulted in high level (98.9%) reduction of Cx. quinquefasciatus populations through the 7-wk field study.
Nelson
F R
FR
Department of Biology, Jackson State University, MS 39217.
Gray
J
J
Aikhionbare
F
F
D000818:Animals; D003465:Culex; D007305:Insecticide Resistance; D007306:Insecticides; D007605:Juvenile Hormones; D007814:Larva; D008726:Methoprene; D010647:Phenyl Ethers; D010932:Planarians; D011722:Pyrethrins; D000002:Temefos; D014227:Triazines
D007306:Insecticides; D007605:Juvenile Hormones; D010647:Phenyl Ethers; D011722:Pyrethrins; D014227:Triazines; C042063:J 2931; D008726:Methoprene; C028704:cyromazine; D000002:Temefos; C100036:resmethrin