NDLI: Detection of light and vibration modulates bioluminescence intensity in the glowworm, Arachnocampa flava

Content Provider	Springer Nature Link
Author	Mills, Rebecca Popple, Julie Anne Veidt, Martin Merritt, David John
Copyright Year	2016
Abstract	Glowworms are larval fungus gnats that emit light from a specialised abdominal light organ. The light attracts small arthropod prey to their web-like silk snares. Larvae glow throughout the night and can modulate their bioluminescence in response to sensory input. To better understand light output regulation and its ecological significance, we examined the larvae’s reaction to light exposure, vibration and sound. Exposure to a 5-min light pulse in the laboratory causes larvae to exponentially decrease their light output over 5–10 min until they completely switch off. They gradually return to pre-exposure levels but do not show a rebound. Larvae are most sensitive to ultraviolet light, then blue, green and red. Vibration of the larval snares results in a several-fold increase in bioluminescence over 20–30 s, followed by an exponential return to pre-exposure levels over 15–30 min. Under some conditions, larvae can respond to vibration by initiating bioluminescence when they are not glowing; however, the response is reduced compared to when they are glowing. We propose that inhibitory and excitatory mechanisms combine to modulate bioluminescence intensity by regulating biochemical reactions or gating the access of air to the light organ.
Starting Page	313
Ending Page	327
Page Count	15
File Format	PDF
ISSN	03407594
Journal	Journal of Comparative Physiology A
Volume Number	202
Issue Number	4
e-ISSN	14321351
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-02-20
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Light organ Dousing Arousal Prey capture Web Animal Physiology Neurosciences Zoology
Content Type	Text
Resource Type	Article
Subject	Physiology Behavioral Neuroscience Animal Science and Zoology Ecology, Evolution, Behavior and Systematics

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