Effect of different lighting conditions on circadian developmental rhythms and behaviour inEphestia kuehniellaZell
作者:
JadwigaM. Giebultowicz,
B. Cymborowski,
期刊:
Journal of Interdisciplinary Cycle Research
(Taylor Available online 1976)
卷期:
Volume 7,
issue 2
页码: 119-126
ISSN:0022-1945
年代: 1976
DOI:10.1080/09291017609359512
出版商: Taylor & Francis Group
关键词: Behaviour of insects;circadian rhythm;developmental rhythms of insects;Ephestia kuehniella. Insect rhythms;photoperiodism
数据来源: Taylor
摘要:
A study was made on the developmental rhythms ofEphestia kuehnielladuring different photoperiods: constant lighting (L/L), under conditions of 12 hours light per day (L/D) and in constant darkness (D/D). Observations were made every 2 hrs, for 3 successive 24‐hr periods, of the number of wandering larvae emerging from food, the number of pupations and of imaginai moults. Emergence of wandering larvae is rhythmic only under L/D conditions, and in addition this is also affected by the density of the larvae. Rhythm is least apparent with greatest density of the larvae. Pupation inE. kuehniellais a non‐rhythmic process with each of the photoperiods examined, whereas the imaginai moult is characterized by an endogenous (existing under D/D conditions) rhythm. Emergence of imagines is non‐rhythmic under L/L, and also when pupae under L/D fail to receive the final period of darkness. The rhythm of the imaginai moult is possibly controlled by the biological clock, which stops under conditions of constant light.
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