title: Sublethal effect of concentrations of Metarhizium anisopliae (Metsch.) Sorok on the larval stage and immunologic characteristics of Diatraea flavipennella (BOX) (Lepidoptera: Crambidae).
abstract: 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 phenoloxidase was similar among treatments in 24 and higher concentration 107 spores / mL (60h). In biochemical profile of hemocytes was a change in carbohydrates, lipids and proteins in response to the fungus. The results indicate that the fungus M. anisopliae can be used in the Integrated Management of D. flavipennella by presenting pathogenicity and interfere with their development even when exposed to small concentrations.
authors.affiliation: Departamento de Agronomia - Entomologia, Universidade Federal Rural de Pernambuco, Recife, PE, Brasil.
authors.forename: Jennifer
authors.initials: J
authors.lastname: Guimarães
authors.affiliation: Departamento de Agronomia - Entomologia, Universidade Federal Rural de Pernambuco, Recife, PE, Brasil.
authors.forename: Edmilson J
authors.initials: EJ
authors.lastname: Marques
authors.affiliation: Departamento de Morfologia e Fisiologia Animal, Universidade Federal Rural de Pernambuco, Recife, PE, Brasil.
authors.forename: Valéria
authors.initials: V
authors.lastname: Wanderley-Teixeira
authors.affiliation: Departamento de Biologia, Universidade Federal Rural de Pernambuco, Recife, PE, Brasil.
authors.forename: Auristela C
authors.initials: AC
authors.lastname: De Albuquerque
authors.affiliation: Departamento de Agronomia - Entomologia, Universidade Federal Rural de Pernambuco, Recife, PE, Brasil.
authors.forename: Eliana M
authors.initials: EM
authors.lastname: Dos Passos
authors.affiliation: Departamento de Agronomia - Entomologia, Universidade Federal Rural de Pernambuco, Recife, PE, Brasil.
authors.forename: Cínthia C M
authors.initials: CC
authors.lastname: Silva
authors.affiliation: Departamento de Morfologia e Fisiologia Animal, Universidade Federal Rural de Pernambuco, Recife, PE, Brasil.
authors.forename: Álvaro A C
authors.initials: ÁA
authors.lastname: Teixeira
mesh_terms: D000818:Animals; D006434:Hemocytes / Q000382:microbiology; D007814:Larva / Q000382:microbiology; D007915:Lepidoptera / Q000382:microbiology*; D052981:Metarhizium / Q000737:chemistry*; D010572:Pest Control, Biological / Q000379:methods*; D013172:Spores, Fungal / Q000502:physiology*