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Search Results: 1 - 10 of 469747 matches for " Manoel Guedes Corrêa;Moraes "
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Exigências térmicas e tabela de vida de fertilidade de Amblyseius largoensis
Galv?o, Andréia Serra;Gondim Junior, Manoel Guedes Corrêa;Moraes, Gilberto José de;Oliveira, José Vargas de;
Ciência Rural , 2008, DOI: 10.1590/S0103-84782008000700003
Abstract: amblyseius largoensis (muma) (acari: phytoseiidae) is a species widely spread and naturally occurring in the tropics and subtropics regions. this species is also associated with perennial plants and considered an important predator of aceria guerreronis keifer (acari: eriophyidae) in coconut trees (cocos nucifera l.). the objective of this research was to determinate the thermal requirements of a. largoensis fed with a combination of tetranychus urticae koch (acari: tetranychidae), pollen of ricinus communis l. and a 10 % honey solution. the study was conducted at 18, 21, 24, 27 and 30°c, 70 ± 10 % relative humidity and 12 h photophase. at these temperatures, the period from egg-adult lasted 14.0, 8.6, 6.1, 5,0 e 3.9 respectively. at those temperatures, the threshold temperature for the development of larva, protonynph, deutonymph and egg-adult were 13.3, 13.3, 13.5, 11.9 and 13.3°c, and the thermal constants were 20.9, 13.5, 14.9, 18.9 and 66.1 degree-days, respectively. the fertility life table parameters were better in the 27 and 30°c.
Biologia do ácaro predador Euseius alatus DeLeon (Acari: Phytoseiidae) em diferentes temperaturas
Melo, José Wagner da Silva;Domingos, Cleiton Araújo;Galv?o, Andreia Serra;Gondim Junior, Manoel Guedes Corrêa;Moraes, Gilberto José de;
Acta Scientiarum. Agronomy , 2009, DOI: 10.4025/actasciagron.v31i3.466
Abstract: euseius alatus deleon (acari: phytoseiidae) is one of the most common predators of tropical fruit trees in brazil, feeding of pollen, mites and other small arthropods. this predator presents wide distribution, occurring from rio grande do sul to ceará. this work had as objective to evaluate the effect of temperature on the development and reproduction of e. alatus, in addition to determining their thermal requirements. the study was accomplished at temperatures of 18, 21, 24, 27, 30 and 33oc; relative humidity of 70 ± 5%; and 12-h photophase. at these temperatures, the egg-adult period lasted 14.0; 8.1; 5.5; 4.9; 3.8 and 3.1 days, respectively. the egg, larva, protonymph and deutonymph stages and the egg-adult period presented thermal thresholds of 12.52; 13.85; 14.86; 14.86 and 13.31oc, and thermal constants of 22.32; 14.23; 16.23; 17.3 and 70.16 degrees days. the values for the parameters of the fertility life table, analyzed in conjunction with the values of the different variables of development at different temperatures, showed that the temperature of 30oc is the most suitable for development and reproduction of e. alatus in the laboratory. therefore, is it apparent that the best temperature conditions for the development of e. alatus are found in the warmer regions of brazil, such as those observed in northeastern brazil.
Extratos aquosos de Leucaena leucocephala e Sterculia foetida no controle de Bemisia tabaci biótipo B (Hemiptera: Aleyrodidae)
Vasconcelos, Geraldo José Nascimento de;Gondim Júnior, Manoel Guedes Corrêa;Barros, Reginaldo;
Ciência Rural , 2006, DOI: 10.1590/S0103-84782006000500002
Abstract: the present research was carried out in recife-pe, aimed at to evaluating insecticide, insectistatic and repellant effects of aqueous extracts of leucaena leucocephala (lam.) de wit. and sterculia foetida l. on eggs, nymphs and adults of bemisia tabaci biotype b (genn., 1889) on brassica oleracea var. acephala l. culture. seeds and leaves of l. leucocephala and s. foetida were collected, dried and ground. solutions from the aqueous extracts were prepared with 5g of dried vegetable and 50ml of pure water. leaves of b. oleracea var. acephala were sunk in the solutions for 30 seconds before confining insects on them. extracts of l. leucocephala seeds and s. foetida leaves caused mortality of 60% and 41%, respectively, on eggs of b. tabaci. leaves of s. foetida caused the highest effects on nymphal instars, with mortality of 74.6%. none of the tested extract showed suppression on insect oviposition. the treatments of l. leucocephala showed a shorter longevity and higher oviposition than the treatments of s. foetida and the control. the aqueous extracts from l. leucocephala seeds and s. foetida leaves can be a good alternative to the control of b. tabaci.
Selection of Beauveria bassiana (Bals.) Vuill. and Metarhizium anisopliae (Metsch.) Sorok. for the control of the mite Mononychellus tanajoa (Bondar)
Barreto, Rodrigo Soares;Marques, Edmilson Jacinto;Gondim Jr., Manoel Guedes Corrêa;Oliveira, José Vargas de;
Scientia Agricola , 2004, DOI: 10.1590/S0103-90162004000600015
Abstract: the green mite, mononychellus tanajoa (bondar) (acari: tetranychidae), is considered to be one of the key pests in cassava, manihot esculenta crants, leading to considerable field losses. in this study, ten beauveria bassiana (bals.) vuill. and ten metarhizium anisopliae (metsch.) sorok. isolates were evaluated with regard to their potential as biological control agents against adult m. tanajoa females. the total mortality percentage of m. tanajoa caused by b. bassiana ranged from 13.0 to 97.0%, with confirmed mortality rates extending from 9.0 to 91.0% and lt50 varying from 4.2 to 17.0 days. the m. anisopliae isolates showed total mortality percentages ranging from 12.0 to 45.0% with confirmed mortality rates extending from 8.0 to 45.0%, and lt50 varying from 8.6 to 19.8 days. lethal concentrations (lc50) of 3.93 × 106 conidia ml-1 and 7.44 × 108 conidia ml-1 were determined for b. bassiana and m. anisopliae, respectively. b. bassiana isolate 645 was the most efficient, being an alternative for use in biological control programs against the cassava green mite.
Selection of Beauveria bassiana (Bals.) Vuill. and Metarhizium anisopliae (Metsch.) Sorok. for the control of the mite Mononychellus tanajoa (Bondar)
Barreto Rodrigo Soares,Marques Edmilson Jacinto,Gondim Jr. Manoel Guedes Corrêa,Oliveira José Vargas de
Scientia Agricola , 2004,
Abstract: The green mite, Mononychellus tanajoa (Bondar) (Acari: Tetranychidae), is considered to be one of the key pests in cassava, Manihot esculenta Crants, leading to considerable field losses. In this study, ten Beauveria bassiana (Bals.) Vuill. and ten Metarhizium anisopliae (Metsch.) Sorok. isolates were evaluated with regard to their potential as biological control agents against adult M. tanajoa females. The total mortality percentage of M. tanajoa caused by B. bassiana ranged from 13.0 to 97.0%, with confirmed mortality rates extending from 9.0 to 91.0% and LT50 varying from 4.2 to 17.0 days. The M. anisopliae isolates showed total mortality percentages ranging from 12.0 to 45.0% with confirmed mortality rates extending from 8.0 to 45.0%, and LT50 varying from 8.6 to 19.8 days. Lethal Concentrations (LC50) of 3.93 × 10(6) conidia mL-1 and 7.44 × 10(8) conidia mL-1 were determined for B. bassiana and M. anisopliae, respectively. B. bassiana isolate 645 was the most efficient, being an alternative for use in biological control programs against the cassava green mite.
Extratos aquosos de Leucaena leucocephala e Sterculia foetida no controle de Bemisia tabaci biótipo B (Hemiptera: Aleyrodidae)
Vasconcelos Geraldo José Nascimento de,Gondim Júnior Manoel Guedes Corrêa,Barros Reginaldo
Ciência Rural , 2006,
Abstract: A presente pesquisa foi desenvolvida na Cidade de Recife-PE, com o objetivo de avaliar a a o inseticida, insetistática e repelente de extratos aquosos de duas essências florestais sobre ovos, ninfas e adultos de Bemisia tabaci biótipo B (Genn., 1889) criados em Brassica oleracea var. acephala L. Os extratos utilizados foram de Leucaena leucocephala (Lam.) De Wit. e Sterculia foetida L. Sementes e folhas das duas espécies foram coletadas, secadas e trituradas. Em seguida, os extratos foram preparados na propor o de 5g de cada parte vegetal/50mL de água. Folhas de B. oleracea var. acephala foram imersas durante 30seg nos extratos e, em seguida, os insetos foram confinados na folha tratada. Os extratos de sementes de L. leucocephala e de folhas de S. foetida provocaram mortalidade de 60 e 41% sobre ovos de B. tabaci, respectivamente. Na fase ninfal, o tratamento com folhas de S. foetida apresentou o melhor resultado, com 74,6% de mortalidade. Nenhum dos extratos testados apresentou supress o para oviposi o na espécie estudada. Os indivíduos tratados com os extratos de L. leucocephala tiveram menor longevidade e maior oviposi o com rela o aos tratamentos com S. foetida e com a testemunha. O uso de extratos aquosos de sementes de L. leucocephala e de folhas de S. foetida mostra-se promissor para o controle alternativo de B. tabaci.
Toxicidade de natuneem sobre Tetranychus urticae Koch (Acari: Tetranychidae) e ácaros predadores da família Phytoseiidae
Brito, Hilda Maria;Gondim Junior, Manoel Guedes Corrêa;Oliveira, José Vargas de;Camara, Cláudio Augusto Gomes da;
Ciência e Agrotecnologia , 2006, DOI: 10.1590/S1413-70542006000400014
Abstract: the toxicity of the natuneem at different concentrations for both tetranychus urticae koch and two predatory mites euseius alatus de leon and phytoseiulus macropilis (banks) were studied. the toxicity on eggs, and the residual and repellent effects on adults was evaluated. egg treatment consisted on dipping eggs into natuneem dilutions for five seconds; and residual and repellent effects for adults consisted on dipping leaf discs of canavalia ensiformes (l.) dc. into the dilutions for five seconds. natuneem was repellent for t. urticae and e. alatus at the concentrations 0.25, 0.50 and 1.0%, and exhibited neutral effect on p. macropilis. the toxicity of natuneem on eggs and adults was greater for t. urticae compared to the toxicity on predatory mites. the fecundity of t. urticae was reduced significantly by natuneem in all concentration. on predatory mites significant reduction on its fecundity was found at the highest concentrations evaluated. natuneem was performed better against the twospotted spider mite and exhibited relatively low impact against the predatory mites under the conditions studied.
Occurence and biological aspects of the clitoria tree psyllid in Brazil
Gondim Junior, Manoel Guedes Corrêa;Barros, Reginaldo;Silva, Fernando Rodrigues da;Vasconcelos, Geraldo José Nascimento de;
Scientia Agricola , 2005, DOI: 10.1590/S0103-90162005000300012
Abstract: clitoria fairchildiana (howard) is a tree largely distributed in brazil, used for urban arborization. in april 2001, the psyllid euphalerus clitoriae burckhardt & guajará was reported on this plant in the metropolitan areas of recife, pe, brazil. this report records the occurrence of e. clitoriae and studies some of its biological aspects in this area. with this purpose, c. fairchildiana leaves were sampled weekly, and e. clitoriae nymphs as well as aprostocetus sp. larvae and nymphs were collected and counted. the e. clitoriae population ranged from 2 to 90 nymphs per leaflet. the aprostocetus sp. percentage of parasitism ranged from 3 to 24%. the frequency curve for pygidium width ranged from 120 to 140; 200 to 240; 300 to 380; 460 to 580, and 720 to 820 mm for the first, second, third, fourth, and fifth instars, respectively. the incubation period for e. clitoriae eggs lasted 7.6 days. the nymphal stage lasted 5.7; 4.5; 4.8; 5.0, and 6.1 days for the first, second, third, fourth, and fifth instars, respectively. development time from egg to adult was 33.7 days. female longevity 8.6 days, with a daily fecundity of 118 eggs. the total viability of the immature stage was 74%, and the sex ratio was 0.5.
Biologia do ácaro predador Euseius alatus DeLeon (Acari: Phytoseiidae) em diferentes temperaturas = Biology of predator mite Euseius alatus DeLeon (Acari: Phytoseiidae) under different temperatures
José Wagner da Silva Melo,Cleiton Araújo Domingos,Andreia Serra Galv?o,Manoel Guedes Corrêa Gondim Junior
Acta Scientiarum : Agronomy , 2009,
Abstract: Euseius alatus DeLeon (Acari: Phytoseiidae) é um dos predadores mais comuns em fruteiras no Brasil, alimentando-se de pólen, ácaros e outros pequenos artrópodes. Este predador apresenta ampla distribui o, ocorrendo desde o Rio Grande do Sul até o Ceará. O presente trabalho teve como objetivo avaliar o efeito da temperatura no desenvolvimento e na reprodu o de E. alatus e determinar suas exigências térmicas. O estudo foi conduzido a 18, 21, 24, 27, 30 e33°C, umidade relativa de 70 ± 5% e fotofase de 12h. Nessas temperaturas, o período de ovoadulto durou 14,0; 8,1; 5,5; 4,9; 3,8 e 3,1 dias, respectivamente. Os estágios de ovo, larva, protoninfa, deutoninfa e período de ovo-adulto apresentaram limiares térmicos de 12,52; 13,85; 14,86; 14,86 e 13,31oC e constantes térmicas de 22,32; 14,23; 16,23; 17,3 e 70,16 graus dias. Os valores para os parametros da tabela de vida de fertilidade, analisados em conjunto com os valores das diferentes variáveis de desenvolvimento em diferentes temperaturas, permitiram concluir que a temperatura de 30°C mostrou-se mais adequada ao desenvolvimento e reprodu o de E. alatusem laboratório. Logo, tudo indica que E. alatus encontra melhores condi es de temperatura para se desenvolver em regi es mais quentes do Brasil, como as preponderantes no Nordeste brasileiro. Euseius alatus DeLeon (Acari: Phytoseiidae) is one of the mostcommon predators of tropical fruit trees in Brazil, feeding of pollen, mites and other small arthropods. This predator presents wide distribution, occurring from Rio Grande do Sul to Ceará. This work had as objective to evaluate the effect of temperature on the development and reproduction of E. alatus, in addition to determining their thermal requirements. The study was accomplished at temperatures of 18, 21, 24, 27, 30 and 33°C; relative humidity of 70 ± 5%; and 12-h photophase. At these temperatures, the egg-adult period lasted 14.0; 8.1; 5.5; 4.9; 3.8 and 3.1 days, respectively. The egg, larva, protonymph and deutonymph stages and the egg-adult period presented thermal thresholds of 12.52; 13.85; 14.86; 14.86 and 13.31oC, and thermal constants of 22.32; 14.23; 16.23; 17.3 and 70.16 degrees days. The values for the parameters of the fertility lifetable, analyzed in conjunction with the values of the different variables of development at different temperatures, showed that the temperature of 30oC is the most suitable for development and reproduction of E. alatus in the laboratory. Therefore, is it apparent that the best temperature conditions for the development of E. alatus are found in the warmer regi
Occurence and biological aspects of the clitoria tree psyllid in Brazil
Gondim Junior Manoel Guedes Corrêa,Barros Reginaldo,Silva Fernando Rodrigues da,Vasconcelos Geraldo José Nascimento de
Scientia Agricola , 2005,
Abstract: Clitoria fairchildiana (Howard) is a tree largely distributed in Brazil, used for urban arborization. In April 2001, the psyllid Euphalerus clitoriae Burckhardt & Guajará was reported on this plant in the metropolitan areas of Recife, PE, Brazil. This report records the occurrence of E. clitoriae and studies some of its biological aspects in this area. With this purpose, C. fairchildiana leaves were sampled weekly, and E. clitoriae nymphs as well as Aprostocetus sp. larvae and nymphs were collected and counted. The E. clitoriae population ranged from 2 to 90 nymphs per leaflet. The Aprostocetus sp. percentage of parasitism ranged from 3 to 24%. The frequency curve for pygidium width ranged from 120 to 140; 200 to 240; 300 to 380; 460 to 580, and 720 to 820 mm for the first, second, third, fourth, and fifth instars, respectively. The incubation period for E. clitoriae eggs lasted 7.6 days. The nymphal stage lasted 5.7; 4.5; 4.8; 5.0, and 6.1 days for the first, second, third, fourth, and fifth instars, respectively. Development time from egg to adult was 33.7 days. Female longevity 8.6 days, with a daily fecundity of 118 eggs. The total viability of the immature stage was 74%, and the sex ratio was 0.5.
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