Introduction: crustacean circadian biology 2.1. Rhythms and circadian phenomena 2.2.
Chronobiological systems in Crustacea 2.3. Pacemakers in crustacean circadian systems 3 …

Crustaceans exhibit a variety of overt circadian rhythms. Observations on intact animals
suggest the existence of more than one circadian pacemaker in the nervous system …

We present a comparative morphological study of the brain and medulla terminalis (fourth
eyestalk ganglion) of the spiny lobster Panulirus argus and the crayfish Procambarus clarkii …

1. The X organ-sinus gland system is a conglomerate of 150-200 neurosecretory cells in the
eyestalk of crustaceans. It is the source of a host of peptide neurohormones which partake in …

The secretion of neurohormones from the crustacean X-organ–sinus gland system is
controlled by environmental influences, light being the most conspicuous. Two sets of …

Light is an essential ecological factor that has been demonstrated to affect aquatic animals'
behavior, growth performance, and energy metabolism. Our previous study found that the …

The study of circadian clocks in crustaceans has led to the hypothesis of a distributed
circadian system of pacemakers. In this review, we investigate the role of the crayfish caudal …

ABSTRACT The effect of 5-hydroxyptryptamine (5-HT) was tested in a population of X organ
neurosecretory cells in the eyestalk of the crayfish Procambarus clarkii. Tests were …

Identifying the neurotransmitters secreted by specific neurons in crustacean eyestalks is
crucial to understanding their physiological roles. Here, we combined immunocytochemistry …

ABSTRACT A sandwich-type enzyme-linked immunosorbent assay (ELISA) was utilized to
quantify crustacean hyperglycemic hormone (as Carcinus maenas equivalents) released by …