Pattern of Conidial Discharge of an Entomophthora species ("grylli" type) (Entomophthorales : Entomophthoracea) from Infected Cadavers of Mamestra brassicae L. (Lepidoptera : Noctuidae)

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Abstract
The pattern of conidial discharge of an Entomophthora sp. (an E. grylli type) was investigated on naturally infected larval cadavers of M. brassicae under continuous dark or light conditions at 20.degree. C, and in the field. Most infected larvae in a field of carrots were killed in the afternoon and a few at night. The longest lag period in advance of conidial discharge occurred with cadavers collected at 0200 h. The lag period decreased during the course of the day and was shortest on cadavers collected at 2200 h. The fungus, by adjusting the length of the lag period, discharged most of the conidia during the night from the cadavers collected during the day. The conidial discharge was initiated rapidly at night on cadavers collected in the evening and night. The initiation of conidial discharge was delayed and continued for a long period on cadavers collected at 0200 h; many conidia continued to be discharged the following night. The patterns of conidial discharge in a day were similar at the conditions described.

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