|
|
|
|
<Author> Toru SHIMIZU ; Seiichi MORIYA |
We examined daily flight patterns and the correlation between adult age and flight in Cylas formicarius in the laboratory at 25+-1 deg C under a 14L10D photoregime by a simple method of counting the number of adults flying out of a cup. The flight activity of males peaked just after the onset of darkness and gradually decreased toward the onset of light. Only a small proportion of them flew during the photophase. More than 90% of male adults flew at least once within 2 weeks after exodus from the sweet potato tuber. The proportion of males flying per day increased to a maximum 1 week after the exodus, and about 10% of them flew even 30 days after the exodus. On the other hand, flight activity of females was low and the proportion of females flying at least once was about 25%. Females flew from 7 to 24 days after the exodus. |
