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Estudo morfológico e quantitativo dos hemócitos em larvas de Diatraea saccharalis (Fabricius) (Lepidoptera, Pyralidae)

Morphological and quantitative studies of the hemocytes in larvae of Diatraea saccharalis (Fabricius) (Lepidoptera, Pyralidae)

Resumo

Hemocytes of Diatraea saccharalis larvae aging from 13 to 26 days old were morphological and quantitatively characterized by phase contrast microscopy. Six hemocyte types were described and identified as: prohemocytes (PR), plasmatocytes (PL), granulocytes (GR), oenocytoides (OE). spherulocytes (SP) and verm cells (VE). The total hemocyte counts showed no significant difference in the number of these cells along the normal development of the larvae. However, the relative number of different circulating hemocyte types fluctuated, and it could be expressed as: PL > GR > SP> PR > VE > OE in larvae up to 14 days old; and as: GR > SP > PL > VE > OE > PR in those older than 24 days.

Lepidoptera; Pyralidae; Diatraea saccharalis; total hemocyte count; differential hemocyte count; hemolymph


Lepidoptera; Pyralidae; Diatraea saccharalis; total hemocyte count; differential hemocyte count; hemolymph

Estudo morfológico e quantitativo dos hemócitos em larvas de Diatraea saccharalis (Fabricius) (Lepidoptera, Pyralidae)

Morphological and quantitative studies of the hemocytes in larvae of Diatraea saccharalis (Fabricius) (Lepidoptera, Pyralidae)

Maria T. Siqueira BombonatoI; Elisa A. GregórioII

IDepartamento de Ciências Biológicas. Faculdade de Ciências. Universidade Estadual Paulista. Caixa Postal 473, 17033-360 Bauru, São Paulo, Brasil

IIDepartamento de Morfologia. Instituto de Biociências. Universidade Estadual Paulista. Caixa Postal 501, 18618-000 Botucatu, São Paulo, Brasil

ABSTRACT

Hemocytes of Diatraea saccharalis larvae aging from 13 to 26 days old were morphological and quantitatively characterized by phase contrast microscopy. Six hemocyte types were described and identified as: prohemocytes (PR), plasmatocytes (PL), granulocytes (GR), oenocytoides (OE). spherulocytes (SP) and verm cells (VE). The total hemocyte counts showed no significant difference in the number of these cells along the normal development of the larvae. However, the relative number of different circulating hemocyte types fluctuated, and it could be expressed as: PL > GR > SP> PR > VE > OE in larvae up to 14 days old; and as: GR > SP > PL > VE > OE > PR in those older than 24 days.

Key words: Lepidoptera, Pyralidae, Diatraea saccharalis, total hemocyte count, differential hemocyte count, hemolymph

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AGRADECIMENTOS. Os autores agradecem ao Laboratório de Controle de Pragas da Usina da Barra Açúcar e Álcool S.A., pelo fornecimento das larvas e do meio de cultura, utilizados para a realização deste trabalho.

Recebido em 16.I.1995; aceito em 01.IV.1996.

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Datas de Publicação

  • Publicação nesta coleção
    21 Jul 2009
  • Data do Fascículo
    1995

Histórico

  • Recebido
    16 Jan 1995
  • Aceito
    01 Abr 1996
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