Abstract
Adults of the Queensland fruit-fly, Dacus (Strumeta) tryoni, show a
pronounced diurnal rhythm in pupal ecdysis.
Experiments are described which show that the rhythm can be induced and
oriented by alternation of light and darkness during the larval stage or the
adult stage of the previous generation.
The alternation of light and darkness during the pupal stage had no
direct effect on the rhythm of pupal ecdysis.
When pupae were exposed to a small daily fluctuation in temperature, the
rhythm of ecdysis was more pronounced - i.e. ecdyses were spread over fewer
hours of the day. Most of the flies emerged within a few hours after the
initial increase in temperature.
Subject
Animal Science and Zoology,Ecology, Evolution, Behavior and Systematics
Cited by
32 articles.
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