caracterização citológica dos hemócitos de anticarsia gemmatalis (lepidoptera, noctuidae) em larvas resistentes ao vírus agmnpv citological characterization of the anticarsia gemmatalis (lepidoptera, noctuidae) hemocytes in resistant larvae to the virus agmnpv
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ID: 202639
2009
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Abstract
A ocorrência de larvas de Anticarsia gemmatalis (Hübner, 1932) resistentes ao vírus AgMNPV em laboratório levou ao estudo dos hemócitos deste inseto para avaliar sua participação nos mecanismos que possibilitam a resistência ao vírus. As larvas resistentes com 6 - 11 dias de desenvolvimento (3º a 5º instar) foram anestesiadas por resfriamento e rapidamente limpas em álcool 70%. A hemolinfa foi coletada através de punção abdominal, a análise morfológica foi realizada em contraste de fase e esfregaços corados com solução de Seller. A contagem total de hemócitos (CTH) foi realizada em câmara de Neubauer com hemolinfa não diluída. Para a contagem diferencial de hemócitos (CDH), utilizou-se hemolinfa diluída em solução anticoagulante para insetos. Foram identificados seis tipos de hemócitos: plasmatócitos (38,5%), granulócitos (22,6%), oenocitóides (20,4%), esferulócitos (14,5%), prohemócitos (2,3%) e vermiformes (1,5%). O número total de hemócitos mostrou um aumento significativo durante o período larval estudado.
The occurrence of Anticarsia gemmatalis (Hübner, 1932) larvae resistant to the virus AgMNPV in laboratory led to the study of the hemocytes of this insect, in order to evalue its participation in the mechanisms which enables the resistance to the virus. The resistant larvae with 6 to 11 developmental days old (3rd to 5th instars) were anesthetized by cold and after that were quickly cleaned in 70% alcohol. The hemolymph was collected through abdominal puncturing; the morphological analysis was made in phase contrast and colored smears with Seller solution. The total hemocytes counting (THC), was made in modified Neubauer chamber with not diluted hemolymph. For the differential hemocytes counting (DHC), was used diluted hemolymph in anticoagulant solution for insects. Six hemocytes types were identified: plasmatocytes (38.5%), granulocytes (22.6%), oenocytoids (20.4%), spherulocytes (14.5%), prohemocytes (2.3%) and vermiform (1.5%). The total number of hemocytes showed a significant increase during the studied larval period.
The occurrence of Anticarsia gemmatalis (Hübner, 1932) larvae resistant to the virus AgMNPV in laboratory led to the study of the hemocytes of this insect, in order to evalue its participation in the mechanisms which enables the resistance to the virus. The resistant larvae with 6 to 11 developmental days old (3rd to 5th instars) were anesthetized by cold and after that were quickly cleaned in 70% alcohol. The hemolymph was collected through abdominal puncturing; the morphological analysis was made in phase contrast and colored smears with Seller solution. The total hemocytes counting (THC), was made in modified Neubauer chamber with not diluted hemolymph. For the differential hemocytes counting (DHC), was used diluted hemolymph in anticoagulant solution for insects. Six hemocytes types were identified: plasmatocytes (38.5%), granulocytes (22.6%), oenocytoids (20.4%), spherulocytes (14.5%), prohemocytes (2.3%) and vermiform (1.5%). The total number of hemocytes showed a significant increase during the studied larval period.
| Reference Key |
negreiro2009iheringia:caracterizao
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| Authors | ;Maria C. C. de Negreiro;Renata B. R. Carvalho;Fábio G. de Andrade;Sheila M. Levy;Flávio Moscardi;Ângela M. F. Falleiros |
| Journal | Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan |
| Year | 2009 |
| DOI |
10.1590/S0073-47212009000100010
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