Compatibilidade do predador Brontocoris tabidus (Heteroptera: Pentatomidae) com algodoeiro com glândulas de gossipol

• Ano de defesa: 2006
• Autor(a) principal: Pinon, Tobias Baruc Moreira
• Orientador(a): Zanuncio, José Cola
• Banca de defesa: Rugama, Adrián José Molina , Tavares, Mara Garcia
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Viçosa
• Programa de Pós-Graduação: Mestrado em Entomologia
• Departamento: Ciência entomológica; Tecnologia entomológica
• País: BR
• Palavras-chave em Português: Brontocoris tabidus; Controle biológico; Gossipol
• Palavras-chave em Inglês: Brontocoris tabidus; Biological control; Gossypol
• Área do conhecimento CNPq: CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOSSANIDADE::ENTOMOLOGIA AGRICOLA
• Link de acesso: http://locus.ufv.br/handle/123456789/3859

The use of resistant cultivars in cotton plant production makes important to know the effects of them on insect pests and on those species of the third trophic level that are controlling agents. The objective was to evaluate the development, reproduction and parameters of the life table of the predator Brontocoris tabidus (Signoret, 1852) (Heteroptera: Pentatomidae) on cotton plant genotypes with or without gossypol glands. A total of 10 second instar nymphs was used per organza bag involving a cotton plant leaf XG15 (high gossypol level) (T1) and 10 second instar nymphs per organza bag involving a leaf of cotton plants of the glandless variety (without gossipol) (T2) with 13 replications. Forty pairs of B. tabidus were used, being 20 on cotton plants with high gossypol (XG15) and 20 on the susceptible variety (glandless) originated from those nymphs. The duration and the survival nymph stage of B. tabidus were similar on cotton plants with or without gossypol glands. The number of eggs/female was 167.00 ± 27.55 and 185.16 ± 25.89 on plants with or and without gossypol glands, respectively. The parameters of the life table were similar between treatments with liquid reproductive rate (R0) of 28.92 and 22.50 females per female; duration of a generation (DG) of 49.00 and 48.72 days, time for the population to double in size (DT) of 10.03 and 10.08 days, rates of intrinsic population increase (rm) of 0.068 and 0.064 and finite reason of increase (λ) of 1.071 and 1.066 female progenies per female, respectively. Brontocoris tabidus developed and reproduced with success on cotton plant with gossypol glands, what shows the compatibility of plants of this variety with the release of this predator in the field.