Parasitism of Tuta absoluta in tomato plants by Trichogramma pretiosum Riley in response to host density and plant structures

Cristina Arantes Faria; Jorge Braz Torres; Adriana Maria Vieira Fernandes; Angela Maria Isidro Farias

doi:10.1590/s0103-84782008000600002

journal article Open Access Sep 01, 2008

Parasitism of Tuta absoluta in tomato plants by Trichogramma pretiosum Riley in response to host density and plant structures

Cristina Arantes Faria Jorge Braz Torres Adriana Maria Vieira Fernandes Angela Maria Isidro Farias

Ciência Rural Vol. 38 No. 6 pp. 1504-1509 · FapUNIFESP (SciELO)

View at Publisher Save 10.1590/s0103-84782008000600002

Abstract

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.

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Details

Published: Sep 01, 2008
Vol/Issue: 38(6)
Pages: 1504-1509

Authors

C

Cristina Arantes Faria

University of Neuchâtel, Switzerland

J

Jorge Braz Torres

Universidade Federal Rural de Pernambuco, Brasil

A

Adriana Maria Vieira Fernandes

Universidade Federal Rural de Pernambuco, Brasil

A

Angela Maria Isidro Farias

Universidade Federal Rural de Pernambuco, Brasil

Cite This Article

Cristina Arantes Faria, Jorge Braz Torres, Adriana Maria Vieira Fernandes, et al. (2008). Parasitism of Tuta absoluta in tomato plants by Trichogramma pretiosum Riley in response to host density and plant structures. Ciência Rural, 38(6), 1504-1509. https://doi.org/10.1590/s0103-84782008000600002

Parasitism of Tuta absoluta in tomato plants by Trichogramma pretiosum Riley in response to host density and plant structures

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