Abstract
Uses of a multinomial logit model for investigations of chemical interactions were investigated. The probabilities of four types of effects when mixtures of benzoylphenylureas (BPUs; diflubenzuron or trillumuron) or a juvenile hormone analogue (JHA; methoprene) with selected pyrethroids (fenvalerate or permethrin) were compared. Bioassays were done on fourth- or sixth-instar western spruce budworm, Choristoneura occidentalis Freeman). When sprayed on fourth instars, mixtures of methoprene + fenvalerate, trillumuron + fenvalerate, and dillubenzuron + permethrin produced effects significantly different from those predicted by the hypothesis of additive effectiveness. When sprayed on sixth instars, only mixtures of the BPUs with fenvalerate produced effects significantly different from this hypothesis. We conclude that the multinomiallogit model may be useful to identify interactions between chemicals that merit biochemical investigation.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
