eyestalk

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eyestalk

[′ī‚stȯk]
(invertebrate zoology)
A movable peduncle bearing a terminal eye in decapod crustaceans.
References in periodicals archive ?
Cloning and expression of hyperglycemic (CHH) and molt-inhibiting (MIH) hormones mRNAs from the eyestalk of shrimps of Litopenaeus vannamei grown in different temperature and salinity conditions.
When this procedure is repeated with eyestalks taken from donor crabs acclimated to low salinity, there is no inhibitory effect on CA activity (Henry, 2003).
The expression of Pc-14-3-3 was significantly up-regulated in hepatopancreas after eyestalk ablation or ecdysone induction, which was confirmed by qRT-PCR and western blot analysis.
Standard length (distance between base of eyestalks and mid-posterior margin of sixth abdominal segment was used as measure of body length using stereoscope microscope.
Our previous results showed that ablating the eyestalks from blue crabs (Callinectes sapidus), to remove the endogenous source of MIH and activate Y-organs, led to an increase in Ca++ in Y-organ cells; associated with the increase in intracellular Ca++ was a significant increase in the hemolymphatic ecdysteroid titer.
On the other hand, endogenous dopamine showed to have an in vitro stimulatory effect on the secretion of the gonad-inhibiting hormone (GIH) by the eyestalks of the crab Chasmagnathus granulata, such effect being abolished by the addition to the incubation medium of the dopaminergic antagonist spiperone (Zapata et al.
I got a good look at its striped claws and its twitching eyestalks.
Not only did he successfully convert nature's natural born caravanner into a disco queen, the birds that ate the spangly eyestalks then spread the worm's eggs, included with the free tinsel, in its droppings.
The sinus gland complex present in the eyestalks is the major endocrine center in crustaceans.
Eyestalks stretch, searching nooks and crannies for tidbits of food.