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CARACTERíSTICAS BIOLóGICAS DE TRICHOGRAMMA EXIGUUM EM OVOS DE ANAGASTA KUEHNIELLA E SITOTROGA CEREALELLA BIOLOGICAL CHARACTERISTICS OF TRICHOGRAMMA EXIGUUM IN THE EGGS OF ANAGASTA KUEHNIELLA END SITOTROGA CEREALELLA
Dirceu Pratissoli,Leandro Pin Dalvi,Ricardo Antonio Polanczyk,Gilberto Santos Andrade
IDESIA , 2010,
Abstract: O objetivo deste trabalho foi obter informa es sobre alguns aspectos biológicos de Trichogramma exiguum Pinto & Platiner, (Hymenoptera: Trichogrammatidae) criado nos hospedeiros alternativos Anagasta kuehniella Zeller (Lepidoptera: Pyralidae) e Sitotroga cerealella Oliver (Lepidoptera: Gelechiidae), visando à produ o desses parasitóides para utiliza o no controle biológico de pragas. A maior taxa de parasitismo de T. exiguum foi encontrada em ovos de A. kuehniella. A viabilidade foi superior em ovos de S. cerealella. A raz o sexual foi semelhante para ambos os hospedeiros alternativos. Estes resultados demonstram que ambos hospedeiros alternativos podem ser utilizados na cria o massal de T. exiguum, porém levando em considera o a importancia da taxa de parasitismo, A. kuehniella demonstrou maior aptid o. The objective of this work was to evaluate information about biological characteristics of egg of parasitoid Trichogramma exiguum Pinto & Platiner, (Hymenoptera: Trichogrammatidae) on the alternative hosts Anagasta kuehniella Zeller (Lepidoptera: Pyralidae) and Sitotroga cerealella Oliver (Lepidoptera: Gelechiidae) aiming to use in biological control programs. The higher rate of parasitism of the T. exiguum was verified on eggs of A. kuehniella. The viability of eggs was higher on eggs of S. cerealella. There is not influence in both alternative hosts in the sex ratio. Both alternative hosts can be used in massal rearing of T. exiguum, however due to the importance of the rate of parasitism, A. kuehniella is better adapting.
EFEITO DA TEMPERATURA NO PARASITISMO DE Trichogramma pretiosum Riley, 1879 SOBRE OVOS DE Sitotroga cerealella (Olivier, 1819)  [cached]
INOUE M.S.R.,PARRA J.R.P.
Scientia Agricola , 1998,
Abstract: Avaliou-se o efeito da temperatura no parasitismo de Trichogramma pretiosum Riley, 1879 sobre ovos de Sitotroga cerealella (Olivier, 1819), para sua utiliza o em cria es massais e/ou para o controle biológico desta tra a de gr os armazenados. Os parasitóides foram mantidos sob as temperaturas de 18, 20, 22, 25, 30 e 32°C, durante 48 horas, com umidade relativa de 60±10% e fotofase de 14 horas, em todas as condi es. O parasitismo foi avaliado pela contagem do número de ovos pretos (característica do parasitismo) e pelo número de parasitóides emergidos. As altas temperaturas foram favoráveis ao desempenho de T. pretiosum que, a 30°C teve 97,6% das fêmeas parasitando, com uma média de 18,8 ovos parasitados em 48 horas e com uma viabilidade de 88,5%.
Biologia de Trichogramma pretiosum Riley em ovos de Sitotroga cerealella (Olivier)
ALENCAR JOSé ADALBERTO DE,HAJI FRANCISCA NEMAURA PEDROSA,OLIVEIRA JOSé VARGAS DE,MOREIRA ANDRéA NUNES
Pesquisa Agropecuária Brasileira , 2000,
Abstract: Estudaram-se, em laboratório, aspectos biológicos de Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) em ovos do hospedeiro alternativo Sitotroga cerealella (Olivier) (Lepidoptera: Gelechiidae), visando à obten o de informa es básicas sobre a biologia desse parasitóide em condi es de laboratório. N o houve controle de temperatura, umidade relativa e fotoperíodo, com o objetivo de simular as condi es do Submédio do Vale do S o Francisco, Estado de Pernambuco. A temperatura média registrada durante o desenvolvimento do trabalho foi 25,9±0,9°C. Os resultados mostraram uma dura o média do período ovo-adulto de 9,42 dias e uma viabilidade de ovos parasitados de 88%. O número médio de T. pretiosum emergido por ovo do hospedeiro foi de 1,41, com um máximo de dois indivíduos/ovo. As fêmeas viveram, em média, 5,53 dias, enquanto os machos apresentaram longevidade média de 3,08 dias, quando ambos os sexos foram alimentados com mel puro.
EFEITO DA TEMPERATURA NO PARASITISMO DE Trichogramma pretiosum Riley, 1879 SOBRE OVOS DE Sitotroga cerealella (Olivier, 1819)
INOUE, M.S.R.;PARRA, J.R.P.;
Scientia Agricola , 1998, DOI: 10.1590/S0103-90161998000200009
Abstract: the effect of temperature was evaluated on egg parasitization of the angoumois grain moth, sitotroga cerealella (olivier, 1819), by trichogramma pretiosum riley, 1879 as a basis for mass production of t. pretiosum or biological control of s. cerealella in stored corn t. pretiosum parasitization was studied under six constant temperatures (18, 20, 22, 25, 30, and 32°c) and was evaluated through the counting number of darkened eggs (parasitization characteristic) and the number of emerged parasitoids. the highest temperatures were the best for t. pretiosum parasitization. at 30°c, 97.6% of the females were effective on parasitization with an average of 18.8 s. cerealella eggs per female during the first 48 h period and a high parasitoid emergence (88.5%).
CARACTERíSTICAS BIOLóGICAS DE TRICHOGRAMMA EXIGUUM EM OVOS DE ANAGASTA KUEHNIELLA E SITOTROGA CEREALELLA
Pratissoli,Dirceu; Pin Dalvi,Leandro; Polanczyk,Ricardo Antonio; Santos Andrade,Gilberto; Mathias Holtz,Anderson; Otes Nicoline,Henrique;
Idesia (Arica) , 2010, DOI: 10.4067/S0718-34292010000100006
Abstract: the objective of this work was to evaluate information about biological characteristics of egg of parasitoid trichogramma exiguum pinto & platiner, (hymenoptera: trichogrammatidae) on the alternative hosts anagasta kuehniella zeller (lepidoptera: pyralidae) and sitotroga cerealella oliver (lepidoptera: gelechiidae) aiming to use in biological control programs. the higher rate of parasitism of the t. exiguum was verified on eggs of a. kuehniella. the viability of eggs was higher on eggs of s. cerealella. there is not influence in both alternative hosts in the sex ratio. both alternative hosts can be used in massal rearing of t. exiguum, however due to the importance of the rate of parasitism, a. kuehniella is better adapting.
Biologia de Trichogramma pretiosum Riley em ovos de Sitotroga cerealella (Olivier)
ALENCAR, JOSé ADALBERTO DE;HAJI, FRANCISCA NEMAURA PEDROSA;OLIVEIRA, JOSé VARGAS DE;MOREIRA, ANDRéA NUNES;
Pesquisa Agropecuária Brasileira , 2000, DOI: 10.1590/S0100-204X2000000800021
Abstract: biological aspects of the parasitoid trichogramma pretiosum riley (hymenoptera: trichogrammatidae) were studied in eggs of its factitious host, sitotroga cerealella (olivier) (lepidoptera: gelechiidae), with the objective of obtaining basic information about the biology of this parasitoid under environmental lab conditions. there was no control of temperature, relative humidity and photoperiod with the purpose of simulating the natural conditions of the submédio s?o francisco region, pernambuco state, brazil. the mean temperature during the study was 25.9± 0.9°c. the results showed a mean duration of the period egg-adult of 9.42 days and a viability of parasited eggs of 88%. the mean number of t. pretiosum emerged by egg of the host was 1.41 with a maximum of two individuals/egg. the mean longevity of females was 5.53 days while the males lived an average of 3.08 days when both were fed with pure honey.
Comparison of six protectant insecticides in the control of Sitophylus oryzae (L.) and Sitotroga cerealella (Oliver) in stored wheat Comparación de seis insecticidas protectantes en el control de Sitophilus orizae (L). y Sitotroga cerealella (Oliver) en trigo almacenado  [cached]
Aldana Héctor,Pinto Reinaldo,Acu?a Cesar,Cabezas Marcos
Agronomía Colombiana , 1993,
Abstract: A research was conducted to observ the residual effect of six protectant insec!icides in wheat stored for 120 days. The research was conducted at the Agricultural research center of Tibaitatá with an average temperature of 12.9°C and 79% relative humidity. The storage conditions were 16°C and 64% relative humility. Three dosages insecticides were used against S. oryzae (L.) and S. cerealella (Oliver). Pirimifosmetil, Deltametrina, Fenitrotin and cytlutrin at dosages of 4.0,0.37,4.0, and 3.0 mg/kg. (ppm) respectively controlled S. oryzae effectively. Deltametrina Pirimifos Fenitrotin and cyflutrin used at the same dosages, controlled S. cerealella. The effectiveness of the control followed the same order as the insecticides listed. Diclorvos in three dosages and malathion at 4.0 mglkg lost efectivity alter 60 days of the appliation for both species. Malathion at 8.12 mg/kg was not effective after 90 days of application. Grain insecticide residues were not higher than the maximun allowed by the OMS and FAO for all dosages. Entre mayo de 1991 y septiembre de 1992, se realizó una investigación en el fin de observar el efecto residual de seis insecticidas protectantes en trigo almacenado durante 120 dlas. La experimentación tuvo lugar en el Centro de Investigaciones Agropecuarias de Tibaitatá, localizado a 2.543 m.s.n.m., cuya temperatura y humedad relativa promedias son de 12,9°C y 79%. Dentro de la bodega, los promedios de temperatura y humedad relativa fueron de 16°C y 64%. Los insecticidas se probaron en tres dosis, utilizando los insectos Sitophilus oryzae (L.) y Sitotroga cerealella (Olivier). En el primer insecto, los productos que tuvieron alta mortalidad hasta el final del experimento fueron, en su orden, Pirimifos-metil, Deltametrina, Fenitrotin y Cytlutrin, en dosis de 4,0; 0,37; 4,0 y 3,0 mg/kg (ppm), respectivamente. En S. cerealella, los productos mas eficientes fueron, en orden descendiente, Deltarnetrina, Pirimifosmetil, Fenitrotiony Cytlutrin, en dosis iguales a las mencionadas anterioremente. En ambos insectos, Diclorvos en las tres dosis y Malathion, en 4 mg/kg, a los 60dras, perdió su efecto y Malathion, en 8'y 12 mg/kg, fue inefectivo a los 90 días. Los residuos dejados por los insecticidas en el grano, en ninguna de las dosis empleadas, superaron los limites máximos de residuos permitidos por OMS y FAO.
Características biológicas de linhagens de Trichogramma pretiosum, criados em ovos de Sitotroga cerealella e Anagasta kuehniella
Pratissoli, Dirceu;Holtz, Anderson Mathias;Gon?alves, José Roberto;Oliveira, Regiane Cristina de;Vianna, Ulysses Rodrigues;
Horticultura Brasileira , 2004, DOI: 10.1590/S0102-05362004000300012
Abstract: the biological characteristics of five lineages of t. pretiosum riley (hym.: trichogrammatidae), collected from tomato crops, and reared in a. kuehniella (zeller) and s. cerealella (olivier) eggs were evaluated. the parasitism rate of the lineages, varied from 56,1 to 68.6%, when the host was a. kuehniella, being higher than for s. cerealella. the viability of all lineages, when reared in s. cerealella eggs, was superior to 90%; however, only those lineages reared in s. cerealella eggs and collected in afonso cláudio and venda nova dos imigrantes (espirito santo state, brazil) were significantly higher than those reared on a. kuehniella. the longevity of the offspring submitted to the parasitism, was higher in all the lineages reared in a. kuehniella eggs. all five lineages can be mass reared using both hosts. however, considering the parasitism rate and the quality of the progeny, the host a. kuehniella seems to be superior than s. cerealella
Parasitismo e superparasitismo de Trichogramma pretiosum Riley(Hymenoptera: Trichogrammatidae) em ovos de Sitotroga cerealella(Oliver) (Lepidoptera: Gelechiidae)
Moreira, Marciene D;Santos, Maria C F dos;Beserra, Eduardo B;Torres, Jorge B;Almeida, Raul P de;
Neotropical Entomology , 2009, DOI: 10.1590/S1519-566X2009000200011
Abstract: the parasitoid trichogramma has been used worldwide as biological control agent due to its wide geographic distribution, high specialization and efficacy against many lepidopteran pests. biological and behavioral traits of trichogramma pretiosum riley parasitizing sitotroga cerealella (oliver) eggs were studied aiming to a better understanding of the results from parasitism and superparasitism. the variables investigated were: host acceptance and contact time by t. pretiosum on parasitized host, percentage of parasitoid emergence, number of deformed individuals produced, egg-adult period, sex ratio, offspring female body size and longevity, and number of s. cerealella eggs parasitized/female. parasitism rejection was observed on parasitized host eggs after 24, 72 and 120h of parasitism. the rejection was higher for eggs parasitized after 72h and 120h of parasitism as compared to the eggs after 24h of parasitism. t. pretiosum contact time on eggs after 24h of parasitism was greater than on 72 and 120h. the offspring produced from hosts from which a single parasitoid emerged were larger, exhibited no deformities and greater capacity of parasitism, different from those produced from eggs where two parasitoids emerged. offspring longevity, however, was similar for females emerged from hosts from which one or two adults emerged. in conclusion, t. pretiosum was able to recognize previously parasitized eggs and the superparasitism reduced the parasitoid.reproductive success.
Influência da regi?o de plantio do arroz s?bre a infesta??o da tra?a dos cereais, Sitotroga cerealella (Olivier) (Lepidoptera Gelechiidae)
Rossetto, Carlos Jorge;Accioli, A.;Oliveira, L. B.;Souza, D. M.;
Bragantia , 1969, DOI: 10.1590/S0006-87051969000100015
Abstract: it was investigated whether or not the local of cultivation of rice affects the posterior susceptibility to sitotroga cerealella of the grain in storage. samples of rough rice from the same bulk of seeds, of the variety dourado agulha, were planted in four regions of the state of s?o paulo, pindamonhangaba paddy, pindorama upland, mococa paddy. campinas paddy and campinas upland. the rice, after having been harvested, was taken to campinas where - after one year and half of storage under uniform conditions for all samples - it was tested for its susceptibility to the insect, by using samples of each local replicated 10 times randomly distributed inside of an insect cage. the progeny of insects of each sample was recorded daily. the trial was repeated twice. the results showed that the local of cultivation has influence upon the posterior susceptibility of the grain in storage. the rice grown in pindorama was more damaged by the pest than the rice grown in other regions. there was no significant difference in susceptibility between the paddy and upland rice grown in campinas. scheffe's test indicated that there was a strong contrast between the paddy rice grown in pinda-monhangaba, mococa and campinas and the upland rice grown in pindorama and campinas, the latter being more infested. although the locality may account for this difference, there was a tendency for the upland rice to be much more infested in storage by s. cerealella. the period between infestation and the beginning of emergence of the first adults was of 23 days, showing that under favorable conditions this pest may give one generation each 25 days, in rough rice.
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