sinus gland

sinus gland

[′sī·nəs ‚gland]
(invertebrate zoology)
An endocrine gland in higher crustaceans, lying in the eyestalk in most stalk-eyed species, which is the site of storage and release of a molt-inhibiting hormone.
References in periodicals archive ?
These peptides are synthesized in the x-organ (XO) and travel via axoplasmic flow to the synaptic terminals of the sinus gland (SG) where they are secreted into the hemolymph (see Hopkins, 2012, for review).
Additionally we treated intact crabs that had been transferred from 35 ppt to 15 ppt salinity with whole-eyestalk injections as well as with separate sinus gland and medullary tissue injections in an attempt to demonstrate the capacity of the eyestalk to inhibit CA induction and to determine the anatomical location of the putative hormone.
For medullary tissue (MT) and sinus gland (SG) injections, the two
Injection of isolated sinus gland (SG) homogenate harvested from 35ppt-acclimated donor crabs (SG-35 ppt) reduced CA induction significantly by 49% (P < 0.
Specifically, this CA repressor hormone is likely to be localized to the sinus gland, as SG injection caused a 49% decrease in salinity-stimulated CA activity while MT injection triggered only a nonsignificant, 22% decrease (Fig.
In conclusion, in this study we demonstrate the presence of a carbonic anhydrase repressor hormone localized to the sinus gland of the euryhaline marine crab Callinectes sapidus.
The sinus gland complex present in the eyestalks is the major endocrine center in crustaceans.
The rate of synthesis and secretion of ecdysone by the Y-organ is negatively regulated by the X-organ sinus gland complex.
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Carlisle and Knowles (1959) postulated that factors located in the X-organ and released at the sinus gland control molting and that morphogenesis is a stepwise process which coincides with the molt cycle and may even be controlled by it.
Isolation and characterization of sinus gland neuropeptides with both mandibular organ inhibiting and hyperglycemic effects from the spider crab Libinia emarginata.
The next day Carol was admitted to the Maxillofacial Unit (situated on the old Fazakerley Hospital site) where it was diagnosed she had a tumour in one of her sinus glands.