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| Chocorosqui,Viviane R.; Panizzi,Antônio R.. |
| Results of field evaluations indicated that the neotropical pentatomid Dichelops melacanthus (Dallas) is associated with wheat, Triticum aestivum L. In the no-tillage cultivation system, adults and nymphs were mostly found on the soil, near the plant stems and underneath crop residues of the preceding summer crop, usually soybean, Glycine max (L.) Merrill, or corn, Zea mays L. Wheat grown under the conventional cultivation system showed minimal bug attack. D. melacanthus caused substantial damage to no-tillage wheat plants, particularly to seedlings. Bug attack reduces the number of seed heads of up to 34%. Seed yield was reduced in 31% due to the bugs' feeding, compared to plants free of damage. All developmental phases of the wheat plant were susceptible... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Insecticide; No-tillage; Seed treatment; Stink bug. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2004000400014 |
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| Chocorosqui,Viviane R.; Panizzi,Antônio R.. |
| The biology of the pentatomid Dichelops melacanthus (Dallas) feeding on cultivated and non-cultivated plants was studied in the laboratory. Nymph mortality varied from ≈ 60 on corn (seed mature) to 77% on wheat (ear immature); no nymphs survived on seedlings of corn or wheat. Nymph developmental time on soybean, corn or wheat (seed, pod or ear) varied from 25.5 to 32.8 days. Body weight at adult emergence was similar and greater on most foods than on wheat ear. Nymphs fed preferentially on soybean (pod immature). On non-cultivated hosts, nymphs showed high mortality (73%) on crotalaria (pod immature); on tropical spiderwort (stem) all nymphs died. Nymphs took longer time to develop on crotalaria and/or on spiderwort than on soybean. Body weight at adult... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Food; Pentatomid. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2008000400001 |
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| Chocorosqui,Viviane R.; Pasini,Amarildo. |
| Com o objetivo de verificar a capacidade de predação de pupas de Alabama argillacea (Hübner) por Calosoma granulatum Perty, dois experimentos foram realizados em laboratório durante os meses de janeiro e fevereiro de 1997, sob condição ambiente. No primeiro experimento, foram oferecidas cinco pupas recém-formadas de A. argillacea, envoltas em folhas de algodoeiro, para cada larva de segundo ínstar de C. granulatum. Verificou-se uma predação média diária de 1,8 pupas por larva de C. granulatum. As três primeiras avaliações, correspondentes ao final do segundo ínstar e início do terceiro, foram as que apresentaram maior índice de predação por parte das larvas. No experimento com adultos, a média diária de pupas predadas foi de 1,5 e 1,7 para machos e fêmeas,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Praga do algodoeiro; Predador; Controle biológico. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80592000000100008 |
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