Parasitism of Tuta absoluta in tomato plants by Trichogramma pretiosum Riley in response to host density and plant structures
- Faria, Cristina Arantes University of Neuchâtel, Switzerland
- Torres, Jorge Braz Universidade Federal Rural de Pernambuco, Brasil
- Fernandes, Adriana Maria Vieira Universidade Federal Rural de Pernambuco, Brasil
- Farias, Angela Maria Isidro Universidade Federal Rural de Pernambuco, Brasil
Published in:
- Ciência Rural. - FapUNIFESP (SciELO). - 2008, vol. 38, no. 6, p. 1504-1509
English
One important factor determining the efficacy of parasitoids is the way they exploit different host patch. This study evaluated the response of females of Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) to the oviposition sites of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) on processing tomato plants. In fully developed caged tomato plants T. absoluta moths were released, followed by the release of T. pretiosum females 12h later. After 24h of parasitoid release, the moth oviposition sites were mapped according to the plant canopy, and levels of parasitism assessed. The parasitism rate varied from 1.5 to 28%. There was not influence of plant structures on parasitism, except for the absence of parasitism on the plant apex. Levels of both T. absoluta oviposition and parasitism by T. pretiosum were higher on the upper third of the plant, decreasing downward along the plant canopy.
- Language
-
- English
- Open access status
- gold
- Identifiers
-
- DOI 10.1590/s0103-84782008000600002
- ISSN 0103-8478
- Persistent URL
- https://sonar.ch/global/documents/139997
Statistics
Document views: 39
File downloads:
- Full-text: 0