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| Zanuncio, José Cola; Universidade Federal de Viçosa; Matos Neto, Fausto da Costa; Universidade Federal de Viçosa; Tavares, Wagner de Souza; Universidade Federal de Viçosa; Cruz, Ivan; Embrapa Milho e Sorgo; Leite, Germano Leão Demolin; Universidade Federal de Minas Gerais; Serrão, José Eduardo; Universidade Federal de Viçosa. |
| The functional and numerical responses, reproductive characteristics, and viability of Campoletis flavicincta (Hymenoptera: Ichneumonidae) as well as the mortality after parasitism of the host Spodoptera frugiperda (Lepidoptera: Noctuidae) were analyzed in the laboratory. Campoletis flavicincta pairs were maintained until female death with 10, 20, 30, 40, or 50 caterpillars day-1 of the host S. frugiperda. A type III functional response curve was fitted to the average number of caterpillars supplied per day during the female wasp lifespan, as the explanatory variable. The handling time was 0.5940 ± 0.0875h, and the instantaneous search 0.0047 ± 0.0020 h-1. The functional response for each of the first five days of the host was a type III. The longevity at... |
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Palavras-chave: 5.01.02.02-8 fall armyworm; Functional response; Host density; Numerical response; Parasitism; Parasitoid age Entomologia Agrícola. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15871 |
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| Holtz, Anderson Mathias; Escola Agrotécnica Federal de Colatina; Almeida, Gustavo Dias de; Universidade Federal de Viçosa; Fadini, Marcos Antonio Matiello; Empresa de Pesquisa Agropecuária do Estado de Minas Gerais; Zanuncio, José Cola; Universidade Federal de Viçosa; Zanuncio Júnior, José Salazar; Universidade Federal de Viçosa; Andrade, Gilberto Santos; Universidade Federal de Viçosa. |
| The effect of plant feeding on biological aspects of Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) was evaluated. Nymphs and adults of this predator were fed with Tenebrio molitor L. (Coleoptera: Tenebrionidae) pupae on Eucalyptus urophylla plants in the field or only with pupae of this prey in the laboratory. The development and nymphal survival, as well as the pre-oviposition period, number of egg masses, number, fertility and viability of eggs and the longevity of females of this predator were evaluated. The eucalyptus plants improved the development of P. nigrispinus. This demonstrates that this predator can present higher population growth with eucalyptus plants and T. molitor pupae than in the laboratory (controlled conditions) only with... |
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Palavras-chave: 5.00.00.00-4 Podisus nigrispinus; Biological control; Feeding habit; Vegetable supplement; Predator 5.01.02.02-8 Podisus nigrispinus; Biological control; Feeding habit; Vegetable supplement; Predator. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6152 |
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| Leite, Germano Leao Demolin; Instituto de Ciencias Agrárias da Universidade Federal de Minas Gerais; Nascimento, Aline Fonseca; Instituto de Ciencias Agrárias da Universidade Federal de Minas Gerais; Alves, Sérgio Monteze; Instituto de Ciencias Agrárias da Universidade Federal de Minas Gerais; Lopes, Paulo Sérgio Nascimento; Instituto de Ciencias Agrárias da Universidade Federal de Minas Gerais; Sales, Nilza de Lima Pereira; Instituto de Ciencias Agrárias da Universidade Federal de Minas Gerais; Zanuncio, José Cola; Universidade Federal de Viçosa. |
| The purpose of this work was to study the percentage of healthy trees, living trees and healthy branches and the renewal (natural propagation) of Caryocar brasiliense associated with the properties of soil, the floristic diversity and the canopy size of this plant. Lower proportions of live C. brasiliense trees and of healthy branches were found in the Savanna of Ibiracatu, where only 30% of the trees were healthy and without visible signs of attack by wood borers and by Phomopsis sp. We observed that C. brasiliense trees in areas where the soils contained higher levels of summed chemical bases and total sand (fine + gross) were less healthy. Moreover, the areas whose soils contained higher levels of aluminum and clay had a higher percentage of healthy C.... |
| Tipo: Pesquisa empírica de campo |
Palavras-chave: 5.01.02.02-8 pequi; Canopy size; Floristic diversity; Cossidae; Phomopsis sp. entomologia agrícola. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/13120 |
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