Drosophila suzukii population response to environment and management strategies
| Autor: | Vaughn M. Walton, A. Grassi, Claudio Ioriatti, Peter W. Shearer, Kelly A. Hamby, Beverly S. Gerdeman, Jana C. Lee, M. Valerio Rossi Stacconi, Daniel T. Dalton, Gianfranco Anfora, Betsey Miller, Kent M. Daane, Antonio Biondi, Xin-Geng Wang, Lynell K. Tanigoshi, Angela Gottardello, Rufus Isaacs, Joanna C. Chiu, Nik G. Wiman |
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| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Population dynamics Survival Gompertz function Parasitism DD 010603 evolutionary biology 01 natural sciences Parasitoid Toxicology Fecundity Pesticide Spotted wing Drosophila Temperature Agronomy and Crop Science Drosophila suzukii Original Paper Larva biology fungi DD Temperature Fecundity Survival Population dynamics Pesticide Spotted wing Drosophila Forestry biology.organism_classification Pupa 010602 entomology Population model Settore AGR/11 - ENTOMOLOGIA GENERALE E APPLICATA Zoology Entomology |
| Zdroj: | Journal of pest science, vol 89, iss 3 Journal of Pest Science |
| Popis: | Drosophila suzukii causes economic damage to berry and stone fruit worldwide. Laboratory-generated datasets were standardized and combined on the basis of degree days (DD), using Gompertz and Cauchy curves for survival and reproduction. Eggs transitioned to larvae at 20.3DD; larvae to pupae at 118.1DD; and pupae to adults at 200DD. All adults are expected to have died at 610DD. Oviposition initiates at 210DD and gradually increases to a maximum of 15 eggs per DD at 410DD and subsequently decreases to zero at 610DD. These data were used as the basis for a DD cohort-level population model. Laboratory survival under extreme temperatures when DD did not accumulate was described by a Gompertz curve based on calendar days. We determined that the initiation of the reproductive period of late dormant field-collected female D. suzukii ranged from 50 to 800DD from January 1. This suggests that D. suzukii females can reproduce early in the season and are probably limited by availability of early host plants. Finally, we used the DD population model to examine hypothetical stage-specific mortality effects of IPM practices from insecticides and parasitoids at the field level. We found that adulticides applied during the early season will result in the largest comparative population decrease. It is clear from model outputs that parasitism levels comparable to those found in field studies may have a limited effect on population growth. Novel parasitoid guilds could therefore be improved and would be valuable for IPM of D. suzukii. |
| Databáze: | OpenAIRE |
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