Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 4 de 4
Filtrar
Mais filtros










Intervalo de ano de publicação
1.
J Econ Entomol ; 113(1): 88-97, 2020 02 08.
Artigo em Inglês | MEDLINE | ID: mdl-31613322

RESUMO

Propylea dissecta (Mulsant) (Coleoptera: Coccinellidae) is one of the most promising ladybird beetle against many sucking pests. Predation rates, developmental biology, life table, and field assessment of this ladybird were examined against mustard aphid, Lipaphis erysimi (Kalt.) (Hemiptera: Aphididae), on broccoli. Data on the life history were collected at 23 ± 1°C and 70 ± 1% RH and were evaluated using the two-sex, age-stage life table. Results showed that the two-sex, age-stage life table-based net reproductive rate (R0) was 11.264 ± 6.197 offspring. The adult females lived longer (33.8 ± 2.356 d) than the adult males (32.2 ± 0.841 d). The fourth instar consumed most of L. erysimi (113.97 ± 5.76) compared to the other larval stages of the predator. Male (1,821) and female (2,673) consumed more aphids than larvae. The net consumption rate was 741.78 ± 89.91 aphids. Other aphidophagous predators such as Coccinella septempunctata L., Micraspis discolor (F.), Coccinella transversalis (F.), and syrphid (Diptera: Syrphidae) were also noted in broccoli. Our research showed that inoculative release of 150 or 200 adults per 1,000 m2 for two times on broccoli achieved a significant decrease in aphids L. erysimi and Brevicoryne brassicae L. (Hemiptera: Aphididae) (>95%). The release rate of 150 adults per 1,000 m2 for two times may, therefore, be recommended to manage the aphid population on broccoli.


Assuntos
Afídeos , Brassica , Besouros , Animais , Feminino , Larva , Tábuas de Vida , Masculino , Comportamento Predatório
2.
Braz J Microbiol ; 46(4): 1077-85, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26691465

RESUMO

The entomopathogenic fungi Beauveria bassiana, Metarhizium anisopliae, Lecanicillium lecanii and Isaria fumosorosea were tested for their efficacy in managing the exotic spiraling whitefly Aleurodicus dispersus (Hemiptera, Aleyrodidae) on cassava (Manihot esculenta) during 2 seasons (2011-2012 and 2012-2013). The fungi I. fumosorosea and L. lecanii exhibited promising levels of control (> 70% mortality of the A. dispersus population). The percent mortality increased over time in both seasons. Application of I. fumosorosea was highly pathogenic to A. dispersus in both seasons compared to the other entomopathogenic fungi. Analysis of the percent mortality in both seasons revealed differences in efficacy between 3 and 15 days after treatment. The season also influenced the effects of the fungi on the A. dispersus population. Thus, entomopathogenic fungi have the potential to manage A. dispersus infestation of cassava.


Assuntos
Hemípteros/microbiologia , Hypocreales/fisiologia , Manihot/parasitologia , Doenças das Plantas/prevenção & controle , Animais , Hemípteros/fisiologia , Controle Biológico de Vetores , Doenças das Plantas/parasitologia
3.
Braz. j. microbiol ; 46(4): 1077-1085, Oct.-Dec. 2015. tab, graf
Artigo em Inglês | LILACS | ID: lil-769659

RESUMO

Abstract The entomopathogenic fungi Beauveria bassiana, Metarhizium anisopliae, Lecanicillium lecanii and Isaria fumosorosea were tested for their efficacy in managing the exotic spiraling whitefly Aleurodicus dispersus (Hemiptera, Aleyrodidae) on cassava (Manihot esculenta) during 2 seasons (2011-2012 and 2012-2013). The fungi I. fumosorosea and L. lecanii exhibited promising levels of control (> 70% mortality of the A. dispersus population). The percent mortality increased over time in both seasons. Application of I. fumosorosea was highly pathogenic to A. dispersus in both seasons compared to the other entomopathogenic fungi. Analysis of the percent mortality in both seasons revealed differences in efficacy between 3 and 15 days after treatment. The season also influenced the effects of the fungi on the A. dispersus population. Thus, entomopathogenic fungi have the potential to manage A. dispersus infestation of cassava.


Assuntos
Animais/microbiologia , Animais/parasitologia , Animais/fisiologia , Animais/prevenção & controle , Hemípteros/microbiologia , Hemípteros/parasitologia , Hemípteros/fisiologia , Hemípteros/prevenção & controle , Hypocreales/microbiologia , Hypocreales/parasitologia , Hypocreales/fisiologia , Hypocreales/prevenção & controle , Manihot/microbiologia , Manihot/parasitologia , Manihot/fisiologia , Manihot/prevenção & controle , Controle Biológico de Vetores/microbiologia , Controle Biológico de Vetores/parasitologia , Controle Biológico de Vetores/fisiologia , Controle Biológico de Vetores/prevenção & controle , Doenças das Plantas/microbiologia , Doenças das Plantas/parasitologia , Doenças das Plantas/fisiologia , Doenças das Plantas/prevenção & controle
4.
J Pharm Bioallied Sci ; 5(Suppl 1): S103-8, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23946560

RESUMO

Clinical pulpal anesthesia is dependent on the interaction of three major factors. (1) the dentist (2) the patient and (3) local anesthesia. Many patients fear endodontic treatment due to a concern about pain. Although pain treatment is well managed in many endodontic patients, there exists a group of patients who do not receive adequate local anesthesia. The purpose of this review article is to discuss the possible reasons for pulpal anesthetic failures and also to focus on the measures for developing effective approaches for the same.

SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...