|
|
|
|
|
| PASSOS,ELIANA M. DOS; WANDERLEY-TEIXEIRA,VALÉRIA; MARQUES,EDMILSON J.; TEIXEIRA,ÁLVARO A.C.; BRAYNER,FÁBIO A.. |
| The present research aimed to elucidate which aspects of immune responses in Diatraea flavipennella are suppressed by the parasitoid Cotesia flavipes, thus, ensuring parasitism success. We investigated the presence of apoptosis in fat body cells through the TUNEL technique. According to the results, reduced levels of nitric oxide and phenoloxidase activity were observed in larvae parasitized for three days, and reduced total number of hemocytes, after three and seven days. An increase in plasmatocytes and decrease in spherulocytes numbers were observed in the differential count on the third day of parasitism. The number of melanized microspheres in parasitized larvae was low and indicated less intense melanization. The ultrastructural analysis confirmed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Encapsulation; Hemocytes; Humoral response; Parasitoid; Sugarcane Moth Borer (Diatraea saccharalis). |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000402013 |
| |
|
|
| FIGUEIRÊDO,MARIA DE F. DE S.; MARQUES,EDMILSON J.; LIMA,RICARDO O.R. DE; OLIVEIRA,JOSÉ V. DE. |
| Isolados dos fungos entomopatogênicos Beauveria bassiana (Bals.) Vuill. e Metarhizium anisopliae (Metsch.) Sorok. foram testados sobre lagartas de Castnia licus (Drury), coletadas nos canaviais da Destilaria Tabu, em Caaporã-PB. Foram utilizados os isolados de código 645, 604, 512, 447, IPA 205, IPA 202, 610, IPA 198, IPA 214 e CG 001 de B. bassiana, bem como os isolados de código 1172, 866, PL 47, IPA 204, CG 423, UOD, 860, IPA 216, E9 e CG 100 de M. anisopliae, provenientes de diferentes hospedeiros e localidades. Na concentração de 10(8) conídios/ml, a percentagem de mortalidade provocada pelos isolados de B. bassiana variou de 53,3 a 83,3%, com Tempo Letal (TL50) compreendido entre 8,5 e 14,8 dias, sendo que o isolado 645 apresentou maior potencial... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fungo entomopatogênico; Controle microbiano; TL50. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2002000300008 |
| |
|
|
| GUIMARÃES,JENNIFER; MARQUES,EDMILSON J.; WANDERLEY-TEIXEIRA,VALÉRIA; ALBUQUERQUE,AURISTELA C. DE; PASSOS,ELIANA M. DOS; SILVA,CÍNTHIA C.M.; TEIXEIRA,ÁLVARO A.C.. |
| This work aimed to evaluate the effects of Metarhizium anisopliae on Diatraea flavipennella and investigate their immune response. Was observed the effect of M. anisopliae against larvae of D. flavipennella sprayed at concentrations of 103, 104, 105 conidia / mL, in which showed differences relative the larval period, extending up to 72.0 days in treatment and 25.0 days in the control. The results for hemocytes revealed that the most frequent cells when sprayed at the concentrations of 103, 105, 107 conidia / mL were the prohemocytes, spherulocytes, plasmatocytes and granulocytes in relation to adipohemocytes and oenocytoids. The level of nitric oxide was different between the control and the concentration 107 spores / mL (24), while the activity of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Entomopathogen; Hemocytes; Histochemistry; Nitric oxide; Phenoloxidases; Sugarcane borer. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000401973 |
| |
|
|
|
