Una infección viral en la glándula cervical de larvas de Dione junio (Lepidoptera: Nymphalidae) / A viral infection in the neck glandula of larvae of Dione junio (Lepidoptera: Nymphalidae)
Acta cient. venez
; 51(4): 207-10, 2000. ilus
Article
in Spanish
| LILACS
| ID: lil-287942
Responsible library:
BR1.1
RESUMO
Lepidopteran larvae may be attacked by different viruses, many of which belong to the Baculoviridae family. Whilst studying the ultrastructure of the neck gland in Dione junio larvae we found that in later instars the larvae showed symptoms of attack by two types of virus. The glands were prepared for optical and electron microscopy using sodium cacodylate buffer and standard procedures (0.1M, pH 7.2). The neck gland is composed of two oval internal sacks which communicate with the exterior via an extracellular channel. Each sack contains, in its external region, cells with large, irregular nuclei and a dense cytoplasm containing numerous small mitochondria. In infected larvae, the tissues are damaged and the nuclear polyhedrosis virus can be observed in several of the nuclei. In the cytoplasm another "rickettsia type" virus, may be observed. The pathogenic viruses present in D. junio larvae could be studied as potential biological controls of this pest.
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Collection:
International databases
Database:
LILACS
Main subject:
Exocrine Glands
/
Lepidoptera
/
Neck
Type of study:
Diagnostic study
Limits:
Animals
Language:
Spanish
Journal:
Acta cient. venez
Journal subject:
Science
Year:
2000
Document type:
Article
Affiliation country:
Venezuela
Institution/Affiliation country:
Centro de Microbiología y Biología Celular/VE
/
Instituto de Investigaciones en Biomedicina y Ciencias Aplicadas/VE