Corazonin promotes tegumentary pigment migration in the crayfish Procambarus clarkii

  title={Corazonin promotes tegumentary pigment migration in the crayfish Procambarus clarkii
  author={Mariel Porras and Arnold de Loof and Michael Breuer and Hugo Ar{\'e}chig{\'a}},

Does corazonin signal nutritional stress in insects?

  • J. Veenstra
  • Biology
    Insect biochemistry and molecular biology
  • 2009

The Expression of Corazonin Neurons in Larvae Stage of Scuttle Fly

It is found that there are three groups of corazoninergic neurons in the larval CNS of the scuttle fly and these neurons undergo distinguishable changes through metamorphic process compared to different fly species.

Molecular cloning of [Thr4, His7]-corazonin (Apime-corazonin) and its distribution in the central nervous system of the honey bee Apis mellifera (Hymenoptera: Apidae)

The results indicate that Apime-corazonin shows biological activities comparable to those for [Arg7]- and [His7]-corazonins, which suggests that Apim-Corazonin plays roles as a neurohormone as well as a neurotransmitter or neuromodulator.

Functional Characterization of Paralogous Gonadotropin-Releasing Hormone-Type and Corazonin-Type Neuropeptides in an Echinoderm

This is the first study to investigate the physiological roles of both GnRH-type and CRZ-type neuropeptides in a deuterostome, providing new insights into the evolution and comparative physiology of these paralogous Neuropeptide signaling systems in the Bilateria.

The Expression of Corazonin Neurons in Pupa and Adult Stage of Scuttle Fly

This work focused at the neurotransmitter, corazonin (Crz) that is known to be related to resistance to stress and investigated the developmental process of the neurons in the scuttle fly.

Developmental regulation and functions of the expression of the neuropeptide corazonin in Drosophila melanogaster

The tissue-, stage-, and sex-specific expression of Crz and the association of CrZ with the function of the retrocerebral complex suggest diverse roles for this neuropeptide in Drosophila.

Localization and Functional Characterization of a Novel Molluscan Adipokinetic Hormone

Results show that ap-AKH mRNA and peptide are localized exclusively in the central nervous system (CNS) and peripheral tissues of A. californica, with abdominal, cerebral, and pleural ganglia being the primary sites of ap- AKH production.



Regional distribution and immunocytological localization of red pigment concentrating hormone in the crayfish eyestalk.

A polyclonal antibody was raised against synthetic tyrosinated crustacean red pigment concentrating hormone (RPCH-Tyr) with the sequence Tyr-Leu-Asn-Phe-Ser-Pro-Gly-Trp-NH2 with a tryptophan amide at the carboxyl terminal end to determine native RPCH in the crayfish eyestalk.

Ultrastructural features of neurosecretory cells in the medulla externa of the crayfish eyestalk.

A conglomerate of 8-12 neurons in the medulla externa of the crayfish eyestalk was explored in their reaction to a polyclonal antibody against the tyrosinated octapeptide Red Pigment Concentrating

Localization of corazonin in the nervous system of the cockroach Periplaneta americana

Results indicate that the production of highly specific antisera to some neuropeptides may require a considerable number of booster injections, and that the majority of this immunoreactivity was due to cross-reactivity.

Identification of the gregarization-associated dark-pigmentotropin in locusts through an albino mutant.

Results show that even in isolated (solitary) nymphs, [His7] corazonin induces gregarious black patterns, and its primary structure shows some similarity with the vertebrate melanophore stimulating hormone.

Regulation of Crustacean Neurosecretory Cell Activity

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 control of

The calcium dependence of pigment translocation in freshwater shrimp red ovarian chromatophores.

Data reveal an extracellular and an intracellular Ca++ requirement for RPCH action, and demonstrate that the centripetal or centrifugal direction of pigment movement, the translocation velocity, and the degree of pigment aggregation or dispersion attained are calcium-dependent properties of the granule translocation apparatus.