title: Dispersal of Amblyseius swirskii (Acari: Phytoseiidae) on High-Tunnel Bell Peppers in Presence or Absence of Polyphagotarsonemus latus (Acari: Tarsonemidae).
abstract: Amblyseius swirskiiAthias-Henriot (Acari: Phytoseiidae) is a predatory mite used to control thrips (Thysanoptera), whiteflies (Bemisia tabaci Genn., Hemiptera: Aleyrodidae), and broad mites (BMs) (Polyphagotarsonemus latus Banks, Acari: Tarsonemidae). Dispersal of A. swirskii, using the ornamental pepper "Explosive Ember" as a banker plant was evaluated for control of BMs in high-tunnel peppers. Open-canopy plants (5 weeks old) versus closed-canopy plants (10-weeks old) were used to evaluate the effect of plant connectedness in A. swirskii dispersal, in the presence (two females per plant) and absence of BMs. Plots consisted of a single central banker plant and four bell peppers extending linearly north and south. Sets of all treatments were destructively sampled 1, 4, and 7 days after releasing A. swirskii Within 24 h, A. swirskii dispersed four plants away from the banker plants (1 m), regardless of the state of the canopy. Canopy connectedness did increase the presence of A. swirskii on the crop plants. Predatory mite numbers on closed-canopy treatments doubled within the 7-day sampling period, whereas no significant increase was observed on open-canopy treatments. The presence of BMs had no significant effect on the movement of A. swirskii The results suggest further experiments with A. swirskii and banker plants for control of BMs is warranted.
authors.affiliation: 1881 Natural Area Drive, Entomology and Nematology Department, University of Florida, Gainesville, FL 32611, USA lorelopezq.257@ufl.edu.
authors.forename: L
authors.initials: L
authors.lastname: Lopez
authors.affiliation: 4625 Co Rd 672, Gulf Coast Research and Education Center (GCREC), University of Florida, Wimauma, FL 33598, USA.
authors.forename: H A
authors.initials: HA
authors.lastname: Smith
authors.affiliation: 1881 Natural Area Drive, Entomology and Nematology Department, University of Florida, Gainesville, FL 32611, USA.
authors.forename: M A
authors.initials: MA
authors.lastname: Hoy
authors.affiliation: 2199 South Rock Road, Indian River Research and Education Center (IRREC), University of Florida, Fort Pierce, FL, 34945, USA.
authors.forename: R D
authors.initials: RD
authors.lastname: Cave
mesh_terms: D063147:Animal Distribution; D000818:Animals; D002212:Capsicum / Q000254:growth & development; D005260:Female; D005431:Florida; D020387:Food Chain; D008297:Male; D008925:Mites / Q000254:growth & development / Q000502:physiology*; D009758:Nymph / Q000502:physiology; D010572:Pest Control, Biological
keywords: Acari; Phytoseiidae; biological control; dispersal capacity; predatory mite