Pink Bollworm: Effect of Infection by a Cytoplasmic Polyhedrosis Virus on Diapausing Larvae

Author: BELL M. R.  

Publisher: Entomological Society of America

ISSN: 1938-2901

Source: Annals of the Entomological Society of America, Vol.70, Iss.5, 1977-09, pp. : 675-677

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Abstract

When diapausing larvae of pink bollworms, Pectinophora gossypiella (Saunders), were infected by a cytoplasmic polyhedrosis virus, the duration of diapause was reduced and larval mortality increased. When larvae were reared on diets containing the virus, 42% of the diapausing larvae had pupated by 117 days, compared with 2% of those reared on untreated diets. Mortality at that age was 28% for larvae reared on treated diets compared with 2% for those reared on untreated diets. It appears that infection by the virus reduced the lipid content of diapausing larvae.