[Effects of artificial light, distributed through long photophases, on the annual growth cycle of the crayfish Orconectes limosus (Raffinesque)].
A photophase of 18 hrs interrupts the annual anecdysis of Orconectes limosus, which does not constitute an irrefutable evidence of a photoperiodic control in the cessation of anecdysis, since molts are also induced during the annual rest by an abnormally high temperature after a stay at low temperature. On the contrary, long photophases (18 and 24 hrs), dispensed from the beginning of the molting period, do not inhibit the start of the anecdysis of adults on the express condition that the covers are reconstituted.
D000818:Animals; D003400:Astacoidea / Q000254:growth & development* / Q000528:radiation effects; D005260:Female; D008027:Light; D008297:Male; D008675:Metamorphosis, Biological; D010507:Periodicity; D012621:Seasons; D013696:Temperature
Effets de la lumière artificielle, dispensée en longues photophases, sur le cycle annuel de croissance de l'ecrevisse Orconectes limosus (Rafinesque)