2004 Volume 55 Issue 4 Pages 275-279
Larvae of Sabahan Papilio memnon L. and P. polytes L. were reared under a photoperiod of 12L-12D or 14L-10D at 20℃. In both species, photoperiods affected pupal development, although there was no significant difference in the mean larval stages between photoperiodic conditions. In P. memnon, the pupal stage under the short day (23-27 days) was slightly but significantly longer than that under the long day (23-24 days). In P. polytes, four of nine individuals prolonged their pupal stages under the short day (29-92 days), while all individuals developed without arrest in development under the long day (19-21 days). The results show that these Papilio butterflies inhabiting the tropics near the equator have the ability to delay pupal development in response to a short photoperiod at the moderate temperature.
