PUBLICATION

Modulation of locomotor activity in larval zebrafish during light adaptation

Authors
Burgess, H.A., and Granato, M.
ID
ZDB-PUB-070711-21
Date
2007
Source
The Journal of experimental biology   210(14): 2526-2539 (Journal)
Registered Authors
Burgess, Harold, Granato, Michael
Keywords
zebrafish, behavior, tracking, locomotion, light adaptation, visual startle, escape, masking
MeSH Terms
  • Acclimatization*
  • Animals
  • Behavior, Animal/radiation effects*
  • Biomechanical Phenomena
  • Larva/physiology
  • Larva/radiation effects
  • Light*
  • Locomotion*
  • Photic Stimulation
  • Zebrafish/growth & development*
  • Zebrafish/physiology*
PubMed
17601957 Full text @ J. Exp. Biol.
Abstract
The neural basis of behavioral choice in vertebrates remains largely unknown. Zebrafish larvae have a defined locomotor repertoire as well as a simple nervous system and are therefore an attractive vertebrate system in which to study this process. Here we describe a high-throughput system for quantifying the kinematics of motor events in zebrafish larvae in order to measure the initiation frequency of different maneuvers. We use this system to analyze responses to photic stimuli and find that larvae respond to changes in illumination with both acute responses and extended behavioral programs. Reductions in illumination elicit large angle turns, distinct from startle responses, which orient larvae toward the source of light. In continuing darkness, larvae are transiently hyperactive before adopting a quiescent state. Indeed, locomotor activity is controlled by the state of light or dark adaptation similar to masking phenomena in higher vertebrates where light directly regulates motor activity. We propose that regulation of motor activity by photic stimuli in zebrafish larvae serves a behavioral goal of maximizing exposure to well lit environments optimal for feeding.
Genes / Markers
Figures
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Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Antibodies
Orthology
Engineered Foreign Genes
Mapping