Revista Brasileira de Entomologia

URI permanente para esta coleçãohttps://thoth.dti.ufv.br/handle/123456789/13111

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2003 - 20093

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Data inicial: 2003Data final: 2009

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Agora exibindo 1 - 3 de 3
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    Testes em condições para o controle de Dysmicoccus texensis (Tinsley) (Hemiptera, Pseudococcidae) em cafeeiro com nematóides entomopatogênicos do gênero Heterorhabditis (Rhabditida, Heterorhabditidae)
    (Sociedade Brasileira De Entomologia, 2009) Alves, Viviane S.; Moino Junior, Alcides; Santa-Cecilia, Lenira V. C.; Rohde, Cristiane; Silva, Marco Aurélio Tramontin da
    Tests for the control of coffee root mealybug Dysmicoccus texensis (Tinsley) (Hemiptera, Pseudococcidae) with Heterorhabditis (Rhabditida, Heterorhabditidae). Entomopathogenic nematodes (EPNs) have potential for biological pest control and have been successfully used in several countries in soil and cryptic pests control, as for example the coffee root mealybug Dysmicoccus texensis (Tinsley). Laboratory tests demonstrated that these agents are highly virulent to the insect, but semi-field and field tests are needed to determine their efficiency. Greenhouse tests were made in infested pots with two isolates and two application methods – dead insect bodies and aqueous suspension – in a complete randomized design with five replicates. Field tests were made in randomized plots (six plots) to evaluate six isolates of Heterorhabditis on coffee root for mealybug control. Greenhouse results demonstrate that aqueous suspension was more efficient for the two isolates, with 70% control efficiency for JPM3. In field experiments, treatments with aqueous suspensions of insecticide Actara 250 WG (thiamethoxam), used for comparison, and JPM3 were the only ones statistically different from control, with 81 and 65% control efficiency, respectively.
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    Amostragem, diversidade e sazonalidade de Hemerobiidae (Neuroptera) em Coffea arabica L. cv. Obatã (Rubiaceae)
    (Sociedade Brasileira De Entomologia, 2008) Lara, Rogéria Inês Rosa; Freitas, Sérgio de; Perioto, Nelson Wanderley; Paz, Claudia Cristina Paro de
    Sampling, diversity and seasonal occurrence of Hemerobiidae (Neuroptera) in Coffea arabica L. cv. Obatã (Rubiaceae). This study evaluated sampling methods, seasonality and diversity of the hemerobiids associated to Coffea arabica L. cv. Obatã over a one-year period in Cravinhos, São Paulo, Brazil. The collecting methods were: sweeping net, light trap and Möericke trap. 489 hemerobiids belonging to four genera, were collected: Nusalala (231 individuals / 47.2% of the hemerobiids collected), Megalomus (110 / 22.5%), Hemerobius (104 / 21.3%) and Sympherobius (44 / 9%). The sweeping net seems to be the most efficient method of sampling to capture Hemerobiidae and the Möericke trap presented the higher value of diversity (H’= 0,56) and equitability (J= 0,93). The hemerobiids were recorded in the area along the entire year. The highest abundance occurred from August to March (end of winter, spring and summer) and the population peak was in January (mid-summer). Megalomus presented positive and significant correlations (p< 0.05) with the rainfall and maximum and minimum temperatures; Nusalala with the maximum and minimum temperatures and Sympherobius only with the maximum temperature.
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    Caracterização morfológica de espécies de Hemerobius Linnaeus, 1758 (Neuroptera, Hemerobiidae) associadas a cultivos de café (Coffea arabica L.), milho (Zea mays L.) e erva-mate (Ilex paraguariensis St. Hill.)
    (Sociedade Brasileira De Entomologia, 2003) Lara, Rogéria Inês Rosa; Freitas, Sérgio de
    Morphologic characterization of the Hemerobius Linnaeus, 1758 species (Neuroptera, Hemerobiidae) associated to the cultivations of coffee (Coffea arabica L.), maize (Zea mays L.) and mate (Ilex paraguariensis St. Hill.). The predators were collected in mate crop in Cascavel and São Mateus do Sul, Paraná, Brazil and some other additional specimens in coffee and maize crops in Ribeirão Preto, São Paulo, Brazil. Illustrations obtained by SEM are given by the first time to the principal structures. Three species of Hemerobius were identified: H. bolivari Banks, 1910; H. domingensis Banks, 1941 and H. gaitoi Monserrat, 1996. H. domingensis is recorded for the first time to Brazil.