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Desenvolvimento e exigências térmicas de Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) em ovos de Bonagota cranaodes (Meyrick) (Lepidoptera: Tortricidae)
Fonseca, Fabiana L. da;Kovaleski, Adalecio;Foresti, Josemar;Ringenberg, Rudiney;
Neotropical Entomology , 2005, DOI: 10.1590/S1519-566X2005000600011
Abstract: the aim of this study was to evaluate the development of trichogramma pretiosum riley on eggs of bonagota cranaodes (meyrick) under different temperatures. b. cranaodes eggs were maintained under seven constant temperatures (14, 18, 20, 22, 25, 28 and 30oc), 70 ± 10% r.h. and, 14 h l. forty replicates with 20 parasitized eggs each were kept in glass tubes (8.5 x 2.5 cm) covered with a plastic film. the method of hyperbole was used to calculate the temperature threshold (tb) and the thermal constant (k). the tb obtained was 11.9oc and to thermal constant was 153,4 dd. the most favorable temperature range was from 25oc to 30oc, at which the shortest egg-adult development period and the highest survivorship were observed.
Concentra??o e tempo de libera??o do ferom?nio sexual sintético de Bonagota cranaodes (Meyrick) (Lepidoptera: Tortricidae) na cultura da macieira
Kovaleski, Adalecio;Botton, Marcos;Nakano, Octavio;Vilela, Evaldo F.;Eiras, álvaro E.;
Neotropical Entomology , 2003, DOI: 10.1590/S1519-566X2003000100006
Abstract: the effect of five dosis of the synthetic sex pheromone of bonagota (=phtheochroa) cranaodes (meyrick) (a 9:1 blend of e,z 3,5 dodecanyl acetate and z9 hexadecenyl acetate) and the duration of the synthetic pheromone under field conditions were evaluated in a commercial apple orchard in vacaria, rs, brazil. no significant differences were observed among concentrations ranging from 0.25 to 3.0 mg per rubber septum. delta traps baited with two virgin females were ca. four times more attractive than those baited with the synthetic sex pheromone at the dosis of 3 mg per septum. rubber septa containing this amount of synthetic sex pheromone remained attractive for 120 days. comparing number of males captured in traps baited with the synthetic pheromone and males captured in traps with virgin females during seven months, a significant and positive correlation is observed, demonstrating that the seasonal variations in b. cranaodes population density are detected using the synthetic sex pheromone in delta traps.
Efeito de dietas artificiais para a alimenta??o de adultos de Bonagota cranaodes (Meyrick) (Lepidoptera: Tortricidae), em laboratório
Fonseca, Fabiana Lazzerini da;Manfredi-Coimbra, Silvana;Foresti, Josemar;Kovaleski, Adalecio;
Ciência Rural , 2005, DOI: 10.1590/S0103-84782005000600001
Abstract: adults of bonagota cranaodes (meyrick) (lepidoptera: tortricidae) were maintained in cages of transparent pvc without food, with water, and fed with honey solution at 10% and with honey solution at 10% + 25% of beer only with water and without feeding to evaluate their fecundity, longevity and viability of eggs in growth to (25±1°c and 70±10% of ru). the longevity of females and males was longer and number of eggs/female were obtained in the mean substratum composed of honey at 10% (17,75 days, 17,35 days and 14,07 eggs/posture) and honey at 10% + 25% of beer (18,25 days, 18,20 days and 12,71 eggs/posture). the viability of the eggs and the duration of the embryonic period was similar in all the treatments. the mean with honey at 10% + 25% of beer, presented effects similar to the mean composed with honey at 10% regarding to the longevity, fertility and viability of eggs of b. cranaodes. however, due to the lower cost, the diet based only in honey represents the best choice in laboratory for maintenance rearing of this insect.
Seletividade de agrotóxicos usados na cultura da macieira a Neoseiulus Californicus (McGregor) (Acari: Phytoseiidae)1
Meyer, Geraldine de Andrade;Kovaleski, Adalecio;Valdebenito-Sanhueza, Rosa Maria;
Revista Brasileira de Fruticultura , 2009, DOI: 10.1590/S0100-29452009000200011
Abstract: the objective of this study was to evaluate the side effects of the main pesticides used in adult and immature neoseiulus californicus (mcgregor) (acari: phytoseiidae). the tests were carried out in the laboratory by using the contact and residual spraying method on the leaf surface. it was tested tebufenozide, phosmet, methidation, chlorpyrifos, abamectin, fenpyroximate, pyridaben, captan, mancozeb (two concentrations) and dithianon. to calculate the total effect (e%) on the adults, it was evaluated the mortality, oviposition and viability of eggs, and for the immature ones, only the mortality. the results of e% were assessed 96 hours after the spraying. the products were classified considering the total effect (e%) of toxicity proposed by the iobc/wprs. phosmet, tebufenozide and methidation were innocuous; abamectin, fenpyroximate, chlorpyrifos, captan, mancozeb (two concentrations), and dithianon were slightly harmful, and pyridaben was moderately harmful to the n. californicus adults. as the pesticide selectivity for the immature ones, it was verified that abamectin and pyridaben were moderately harmful, and the others were innocuous. the treatment with 320 g.a.i./100l of mancozeb was the most harmful to n. californicus. no product has been classified as harmful to n. californicus, showing tolerance to these pesticides. these results allow a choice and a more adequate handling for the pesticides used in commercial orchards of apple trees, so that the presence of this mite predator has ability to control red mite.
Efeito de dietas artificiais para a alimenta o de adultos de Bonagota cranaodes (Meyrick) (Lepidoptera: Tortricidae), em laboratório
Fonseca Fabiana Lazzerini da,Manfredi-Coimbra Silvana,Foresti Josemar,Kovaleski Adalecio
Ciência Rural , 2005,
Abstract: Adultos de Bonagota cranaodes (Meyrick) (Lepidoptera: Tortricidae) submetidos a tratamentos com água, solu o de mel a 10%, solu o de mel a 10% + 25% de cerveja e sem alimento foram mantidos em gaiolas de PVC transparente para avaliar a fecundidade, longevidade e viabilidade de ovos em laboratório a 25?1degreesC e 70?10% de UR. Maior longevidade de fêmeas e machos e número de ovos/fêmea foram obtidos nos substratos compostos de mel a 10% (17,75 dias, 17,35 dias e 14,07 ovos/postura) e mel a 10% + 25% de cerveja (18,25 dias, 18,20 dias e 12,71 ovos/postura). A viabilidade dos ovos e a dura o do período embrionário foram semelhantes em todos os tratamentos. O substrato alimentar mel a 10% + 25% de cerveja, apresentou efeitos semelhantes ao substrato composto de apenas mel a 10% sobre a longevidade, fertilidade e viabilidade dos ovos. Entretanto, devido ao menor custo, a dieta a base de mel apresenta melhor potencial de utiliza o para manuten o da cria o do inseto em laboratório.
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