Role of corpus allatum on the modulation of feeding rhythm in the semilooper caterpillar, Achaea janata (L).
A circadian feeding rhythm which may be entrained by photoperiod was found in fifth instar caterpillars of the lepidopteran, Achaea janata (L.). Allatectomy reduced the amount of food consumed; this consumption was significantly lower during the fifth instar in both allatectomized and sham-operated insects. An apparent circadian feeding pattern appeared on day 2 in the sham-operated caterpillars. Topical application of the anti-allatin, Precocene-II (50 micrograms/animal) also reduced leaf consumption significantly compared to the respective controls, although these controls maintained the same apparent circadian feeding rhythm on day 2.
Abraham
G
G
Department of Zoology, St Thomas College, Kerala, India.
Muraleedharan
D
D
D000818:Animals; D001578:Benzopyrans / Q000494:pharmacology; D002940:Circadian Rhythm / Q000502:physiology*; D003335:Corpora Allata / Q000502:physiology; D005247:Feeding Behavior / Q000187:drug effects / Q000502:physiology*; D007605:Juvenile Hormones / Q000037:antagonists & inhibitors / Q000502:physiology; D007814:Larva / Q000502:physiology; D007915:Lepidoptera / Q000502:physiology*
D001578:Benzopyrans; D007605:Juvenile Hormones; C014163:precocene II