Involvement of eyestalk factors in the neuroendocrine control of osmoregulation in adult American lobster Homarus americanus.
Osmoregulatory capacity (OC) decreased by approximately 50% after eyestalk ablation in adult Homarus americanus when in dilute media. OC was used to assay sinus gland extracts. Injection of total extracts and of some HPLC-separated fractions of sinus glands into destalked lobsters increased OC. One of the described crustacean hyperglycemic hormone isoforms influences osmoregulation. Another fraction of the sinus gland extracts modifies osmoregulation but its nature remains unknown. Variations in OC were examined in response to ecdysterone, Phe-Met-Arg-Phe-NH2, and atrial natriuretic factor but effects were minimal.
Charmantier-Daures
M
M
Laboratoire d'Ecophysiologie des Invertébrés, Université des Sciences Montpellier II, France.
Charmantier
G
G
Janssen
K P
KP
Aiken
D E
DE
van Herp
F
F
D000595:Amino Acid Sequence; D000818:Animals; D009320:Atrial Natriuretic Factor / Q000494:pharmacology; D002851:Chromatography, High Pressure Liquid; D004441:Ecdysterone / Q000494:pharmacology; D004702:Endocrine Glands / Q000737:chemistry / Q000502:physiology; D005260:Female; D007447:Invertebrate Hormones / Q000302:isolation & purification / Q000494:pharmacology / Q000502:physiology*; D008297:Male; D008969:Molecular Sequence Data; D008121:Nephropidae / Q000378:metabolism*; D009490:Neurosecretory Systems / Q000502:physiology*; D014020:Tissue Extracts / Q000494:pharmacology; D014882:Water-Electrolyte Balance / Q000502:physiology*
D007447:Invertebrate Hormones; D014020:Tissue Extracts; D004441:Ecdysterone; D009320:Atrial Natriuretic Factor