Hostname: page-component-586b7cd67f-2brh9 Total loading time: 0 Render date: 2024-11-24T16:39:27.233Z Has data issue: false hasContentIssue false
  • English
  • Français

Infection of Termites by Spodoptera littoralis Nuclear Polyhedrosis Virus

Published online by Cambridge University Press:  19 September 2011

Ahlam A. Al Fazairy  and
F. A. Hassan
Ahlam A. Al Fazairy
Affiliation:
Entomology Division, Plant Protection Department, Faculty of Agriculture, University of Alexandria, Alexandria, Egypt
F. A. Hassan
Affiliation:
Sabahia Research Station, Alexandria, Ministry of Agriculture, Egypt
Get access

Abstract

A nuclear polyhedrosis virus isolated from the Egyptian cotton leafworm, Spodoptera littoralis, was found to infect termite castes of Kalotermes flavicollis. Laboratory studies indicated that no specific trend toward mortality responses among the different individuals of termites was noted. All test castes of termites, young, middle-sized, old and reproductive nymphs, and soldiers, were quite equal in their response to the virus infection, regardless of whether the virus concentration was high or low; a concentration of 6.4 × 108 polyhedra/ml, killed only 64% of the treated individuals, while the dosage of 6.4 × 107 polyhedra/ml produced over 90% mortality. Also, thesame trend of response was recorded with the survivors which received challenge doses of NPV suspension each 9 or 10 days. On the other hand, these results revealed that if the NPV is used to control termites, periodic applications would be more efficacious thanone treatment. Virus symptoms were recorded in all affected insects.

Résumé

Le noyau polyhedrosé d'un virus isolé d'une feuille de coton égyptien, Spodoptera littoralis était établi d'infecter les termites do Kalotermes flavicollis. Les études du laboratoire ont indiqués qu'aucune réponse de mortalité specifique n'a eu tendance dans les différents termites. Tous les essais sur les termires jeunes, moyennes et vieilles aussi sur les nymphes reproductrice, les soldats, tous les essaies étaient égaux dans leur résultats pour l'infection du virus, la vue de la concentration du virus etait élevée ou basse. Une concentration de 6.4 × 108 polyhedra'ml tua seulement 64% des individus traités. Quand la dose était de 6.4 × 107 polyhedra/ml elle produit plus de 90% de mort. Aussi, la même tendency de la résponse était enregistré avec les survivants qui ont reçu des doses de NPV en suspension chacun de 9 ou 10 jours. Pour d'autres, ces résultats ont réveélé que si le NPV était employé pour le contrôle des termites les applications périodiques seraient plus efficaces qu' un seule traitement. Les symptômes des virus enrégistrés étaient sue tous les insectes affectés.

Keywords

TermitesKalotermes flavicollisIsopteraSpodoptera littoralisvirusnuclear polyhedrosis virusinfectivity testssymptomatology
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 9 , Issue 1 , February 1988 , pp. 37 - 39
Copyright
Copyright © ICIPE 1988

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Cox, M. E., Larson, A. D. and Amborski, R. L. (1972) Nuclear polyhedrosis virus of Pseudoplusia includens. J. Invertebr. Pathol. 19, 411–413.CrossRefGoogle Scholar
Federici, N. B. and Lowe, R. E. (1972) Studies on the pathology of a Baculovirus in Aedes triseriatus. J. Invertebr. Pathol. 20, 14–21.CrossRefGoogle ScholarPubMed
Fowler, M. and Robertson, J. S. (1972) Iridescent virus infection in field populations of Wiseana cervinata (Lepidoptera: Hepialidae) and Witlesia (Lepidoptera: Pyralidae) in New Zealand. J. Invertebr. Pathol. 19, 154–155.Google Scholar
Hunter, D. K., Hoffmann, D. F. and Collier, S. J. (1973) The histology and ultrastructure of a nuclear polyhedrosis virus of the webbing cloths moth, Tineola bisselliella. J. Invertebr. Pathol. 21, 91–100.Google Scholar
Magnoler, A. (1974) Bioassay of a nuclear polyhedrosis virus of the gypsy moth, Porthetria dispar. J. Invertebr. Pathol. 23, 190–196.CrossRefGoogle Scholar
Raheja, A. K. and Brooks, M. A. (1971) Inability of the forest tent caterpillar, Malacosoma disstria, to acquire resistance to viral infection. J. Invertebr. Pathol. 17, 136–137.CrossRefGoogle Scholar
Sikorowski, P. P., Andrews, G. L. and Brooks, J. R. (1973) Transovum transmission of a cytoplasmic polyhedrosis virus of Heliothis virescens (Lepidoptera: Noctuidae). J. Invertebr. Pathol. 21, 41–45.CrossRefGoogle Scholar
Smith, K. M. (1976) Virus-Insect Relationships. Longman, London and New York.Google Scholar
Sutter, G. R. (1972) A nonoccluded virus of the army cutworm. J. Invertebr. Pathol. 21, 62–70.CrossRefGoogle Scholar
Vail, P. V., Jay, D. L. and Hunter, D. K. (1973) Infectivity of a nuclear polyhedrosis virus fromthe alfalfa looper, Autographa californica, after passage through alternate hosts. J. Invertebr. Pathol. 21, 16–20.CrossRefGoogle Scholar
Vail, P. V., Jay, D. L., Hunter, D. K. and Staten, R. T. (1972) A nuclear polyhedrosis virus infective to the pink bollworm, Pectinophora gossypiella. J. Invertebr. Pathol. 20, 124–128.CrossRefGoogle Scholar
Weiser, J. and Briggs, J. D. (1971) Identification of Pathogens (Edited by Burges, H. D. and Hussey, N. W.), pp. 13–66, Academic Press, New York.Google Scholar