Neuropeptide F immunoreactive clock neurons modify evening locomotor activity and free‐running period in Drosophila melanogaster

Aug 10, 2011The Journal of comparative neurology

Neuropeptide F–producing clock neurons influence evening movement and internal day length in fruit flies

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Abstract

The investigation identified five distinct subsets of neuropeptide F-positive clock neurons in Drosophila melanogaster.

  • Specific subsets of clock neurons are linked to daily locomotor rhythms and differ in neurotransmitter composition.
  • The fifth s-LN(v) and certain l-LN(v)s were newly identified as neuropeptide F-positive neurons.
  • Ablation of NPF-expressing neurons affects the free-running period and evening activity amplitude in light-dark cycles.
  • Simultaneous ablation of NPF and pigment dispersing factor neurons led to an earlier peak in evening activity and reduced amplitude.
  • RNA interference targeting NPF alongside pigment dispersing factor suggests its role in regulating evening activity.

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