Quantification of the Life Time Flight Capabilities of the South American Palm Weevil, (L.) (Coleoptera: Curculionidae).

Mark S Hoddle, Christina D Hoddle, Ivan Milosavljević
Author Information
  1. Mark S Hoddle: Department of Entomology, University of California, Riverside, CA 92521, USA.
  2. Christina D Hoddle: Department of Entomology, University of California, Riverside, CA 92521, USA.
  3. Ivan Milosavljević: Department of Entomology, University of California, Riverside, CA 92521, USA. ORCID

Abstract

The life time flight capabilities of an invasive palm pest, , were assessed using flight mill assays under controlled conditions in the laboratory. A total of 101 weevils were used for experiments and subjected to repeat flight assays. A total of 17 flight trials were run, of which the first 14 provided useful data prior to weevil death. Male and female weevils exhibited a strong capacity for repeat long distance flights. Flight metrics of interest were not affected by weevil sex or mating status. Cumulative lifetime flight distances for male and female averaged ~268 km and ~220 km, respectively. A maximum lifetime cumulative flight distance of ~758 km and ~806 km was recorded for one male of unknown mating status and one unmated female weevil, respectively. Dispersal data for individual flights (i.e., trials 1 through 9, 10-14 combined) and all flight trial data (i.e., flights 1-14 combined) exhibited platykurtic distributions. The results presented here may have important implications for modeling the spread of this invasive pest and for the development of monitoring and management plans.

Keywords

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Grants

  1. 17-0275-044-SC/U.S. Department of Agriculture's (USDA) Agricultural Marketing Service

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