![]() Consequently, we produced a phase-response curve in response to photic entrainment under constant darkness for both species. flava individuals do not synchronize to each other, rather their circadian control system entrains to the light:dark cycle to promote nocturnal bioluminescence. tasmaniensis individuals synchronize their bioluminescence in the dark zone of caves under the control of the circadian system and A. Another difference between the two species is that A. flava shows a homeostatic control of bioluminescence it is unlikely to initiate bioluminescence when exposed to dark pulses during the photophase and it does so with a long latency. tasmaniensis is ready to initiate bioluminescence at any time darkness is encountered. Here we describe substantial differences in the bioluminescence regulatory systems of two species one is a troglophile with populations both in caves and outside of caves in wet forest (Arachnocampa tasmaniensis) and the other has no known cave populations (Arachnocampa flava). Glowworms, members of the keroplatid fly genus, Arachnocampa, glow to attract prey. ![]()
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