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Favoreto AL, Pavani RF, Ribeiro MF, Zanuncio AJV, Soares MA, Zanuncio JC, Wilcken CF. Tetrastichus howardi (Hymenoptera: Eulophidae): first report of parasitism in Oxydia vesulia (Lepidoptera: Geometridae). BRAZ J BIOL 2020; 81:406-410. [PMID: 32428093 DOI: 10.1590/1519-6984.228541] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 01/21/2020] [Indexed: 11/22/2022] Open
Abstract
The adaptation of native lepidopteran species to eucalyptus plantations reduces the productivity of this crop in Brazil. Oxydia vesulia Cramer (Lepidoptera: Geometridae) is a secondary pest, frequently reported in eucalyptus plantations with population outbreaks and economic damages. Methods of biological control of this pest may include the use of the exotic pupae endoparasitoid Tetrastichus howardi Olliff (Hymenoptera: Eulophidae), reported as efficient to controlling lepidopteran pests. The parasitism of O. vesulia caterpillars and pupae by T. howardi was evaluated under controlled conditions (25 ± 1 ºC, 60 ± 20% humidity and 12:12 h L:D). Each O. vesulia caterpillar or pupae was individually placed in a flat-bottom tube with 10 and 15 females of T. howardi for 48h, respectively. The parasitoids were removed after that period, the caterpillars were fed and the pupae were maintained until emergence of the parasitoid or formation of pupae and emergence of adults of this pest. The fourth-instar caterpillars of O. vesulia, after the parasitism period, were kept in pots with Eucalyptus urophylla leaves, changed daily until the end of the experiment. A total of 40% of the caterpillars died before the pre-pupae stage, 40% reached the pupae stage and died due to inadequate adult formation and 20% generated moths, but none adult parasitoid emerged from the caterpillars. All pupae of O. vesulia were parasitized and showed emergence of parasitoids. The parasitism of O. vesulia caterpillars and pupae by T. howardi shows the potential of this natural enemy for the integrated management of this defoliator pest in eucalyptus plantations.
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Affiliation(s)
- Ana Laura Favoreto
- Departamento de Proteção Vegetal, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista - UNESP, Av. Universitária, 3780, CEP 18610-034, Botucatu, SP, Brasil
| | - Rafaela Freitas Pavani
- Departamento de Proteção Vegetal, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista - UNESP, Av. Universitária, 3780, CEP 18610-034, Botucatu, SP, Brasil
| | - Murilo Fonseca Ribeiro
- Departamento de Proteção Vegetal, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista - UNESP, Av. Universitária, 3780, CEP 18610-034, Botucatu, SP, Brasil
| | - Antonio José Vinha Zanuncio
- Departamento de Engenharia Florestal, Universidade Federal de Viçosa - UFV, CEP 36570-900, Viçosa, MG, Brasil
| | - Marcus Alvarenga Soares
- Programa de Pós-graduação em Produção Vegetal, Universidade Federal dos Vales Jequitinhonha e Mucuri - UFVJM, CEP 39100-000, Diamantina, MG, Brasil
| | - José Cola Zanuncio
- Departamento de Entomologia, Instituto de Biotecnologia Aplicado à Agropecuária - BIOAGRO, Universidade Federal de Viçosa - UFV, CEP 36570-900, Viçosa, MG, Brasil
| | - Carlos Frederico Wilcken
- Departamento de Proteção Vegetal, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista - UNESP, Av. Universitária, 3780, CEP 18610-034, Botucatu, SP, Brasil
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