Author(s):
Paes, João Paulo Pereira ; Lima, Victor Luiz Souza ; Pratissoli, Dirceu ; de Carvalho, José Romário ; Bueno, Regiane Cristina Oliveira de Freitas [UNESP]
Date: 2022
Persistent ID: http://hdl.handle.net/11449/228617
Origin: Oasisbr
Subject(s): Biological control; Egg parasitoid; European pepper moth; Host age; Parasitism percentage; Biological control; Biological control; Egg parasitoid; Egg parasitoid; European pepper moth; European pepper moth; Host age; Host age; Parasitism percentage; Parasitism percentage
Description
Made available in DSpace on 2022-04-29T08:27:47Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-01-01
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Fundação Estadual de Amparo à Pesquisa do Estado do Espírito Santo
The European pepper moth Duponchelia fovealis (Zeller, 1847) (Lepidoptera: Crambidae), despite being among the principal pests of strawberries in Brazil. However, biological control methods are rarely documented for this pest. In the current study, the goal was to select promising Trichogramma strains to enable the control of D. fovealis and to determine the acceptance of different ages of host eggs by the parasitoid. In the first bioassay, evaluations were done on the biological parameters of five strains of Trichogramma pretiosum Riley and one of Trichogramma galloi Zucchi (Hymenoptera: Trichogrammatidae). The best performance came from the strains, Tp18 (T. pretiosum) and Tg (T. galloi), showing parasitism and viability higher than 50 and 90%, respectively. Another bioassay revealed the acceptance of both these species (Tp18 and Tg) for different ages of D. fovealis eggs. All host ages were accepted by T. pretiosum (Tp18) and T. galloi, with a preference for younger eggs (65% parasitism). Adult emergence, number of individuals per egg and sex ratio revealed no significant differences with respect to the host age. The current study provides pertinent data on the selection and performance of Trichogramma species on D. fovealis eggs of different ages.
Instituto Federal de Santa Catarina
Laboratorio de Entomologia Departamento de Agronomia Centro de Ciências Agrárias e Engenharias Universidade Federal do Espírito Santo, Alto Universitário, s/n, Cx. Postal 16
Departamento de Proteção Vegetal Faculdade de Ciências Agronômicas Universidade Estadual de São Paulo “Julio de Mesquita Filho”
Departamento de Proteção Vegetal Faculdade de Ciências Agronômicas Universidade Estadual de São Paulo “Julio de Mesquita Filho”
