SOME OBSERVATIONS ON VERTICAL TRANSMISSION OF THE MICROSPORIDIANPARASITE FROM THE TEAK DEFOLIATOR, HYBLAEA PUERA CRAMER

摘要

Studies were carried out on vertical transmission of microsporidian parasite isolated from teak defoliator Hyblaea puera (Hyblaeidae) Cramer. Larvae were inoculated with three different spore loads 2x102, 2x103, 2x104 to examine the extent of infection in Fl generation. The eggs hatched in F1 generation from different spore loads were 48-55%, 39-42% and less than 1%, in comparison with nearly 75% in control. Infections observed in progenies of different spore loads were 23%, 31.5% and 100% respectively. This indicates the influence of microsporidian parasite in mortality of the eggs as well as prevalence of infection in hatched larvae. Therefore, microsporidian parasite manifests a potential to be used as a biocontrol agent.