Response to a Synthetic Pheromone Source by OX4319L, a Self-Limiting Diamondback Moth (Lepidoptera: Plutellidae) Strain, and Field Dispersal Characteristics of its Progenitor Strain
| Autor: | Tracey Chapman, Stefan J. Long, Michael Bolton, Hilda L. Collins, Anthony M. Shelton, Charles E. Linn, Neil I. Morrison |
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| Rok vydání: | 2019 |
| Předmět: |
Male
0106 biological sciences Zoology Brassica Moths 01 natural sciences Pheromones Animals Genetically Modified Lepidoptera genitalia 03 medical and health sciences Animals Sex Attractants 030304 developmental biology 0303 health sciences Diamondback moth Ecology biology Plutella General Medicine biology.organism_classification 010602 entomology Plutellidae Insect Science Sex pheromone Biological dispersal Pheromone Female PEST analysis |
| Zdroj: | Journal of Economic Entomology. 112:1546-1551 |
| ISSN: | 1938-291X 0022-0493 |
| Popis: | The diamondback moth, Plutella xylostella L. (Lepidoptera: Plutellidae), is a global pest that infests vegetable and field crops within the Brassica family. A genetically engineered strain of P. xylostella, OX4319L, carrying a ‘self-limiting’ gene, has shown potential for managing P. xylostella populations, using sustained releases of OX4319L male moths. In order for such a strain to provide control, the transgenic individuals must exhibit attraction to female P. xylostella sex pheromone and adequate dispersal in the field. In this study, we tested these key traits. First, we compared the responses of the OX4319L male moths to a synthetic female sex pheromone source in wind tunnel trials to those of males from three other strains. We found that OX4319L males responded comparably to strains of non-engineered males, with all males flying upwind towards the pheromone source. Second, we used mark-release-recapture studies of a wildtype P. xylostella strain, from which the OX4319L strain was originally developed, to assess dispersal under field conditions. Released males were recaptured using both pheromone-baited and passive traps within a 2.83 ha circular cabbage field, with a recapture rate of 7.93%. Males were recaptured up to the boundary of the field at 95 m from the central release point. The median dispersal of males was 14 m. These results showed the progenitor strain of OX4319L retained its ability to disperse within a host field. The results of these experiments are discussed in relation to the potential for the effective use of engineered male-selecting P. xylostella strains under field conditions. |
| Databáze: | OpenAIRE |
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