Hyperglycemic effects of biogenic amine in the freshwater giant prawn, Macrobrachium rosenbergii
Date Issued
1998-07-31
Date
1998-07-31
Author(s)
Kuo, Ching-ming
DOI
872611B002004
Abstract
Crustacean hyperglycemic hormone
(CHH), a neurohormone synthesized and
released from the x-organ sinus gland
complex, is primarily involved in
carbohydrate metabolism, and biogenic
amines and peptidergic neuroregulators are
known to modulate the release of CHH.
Marked elevations of hemolymph glucose
titers, which peaked within 2 hr, were
observed in both intact and bilaterally
eyestalk-ablated prawns, Macrobrachium
rosenbergii, when they were transferred
directly from their optimal temperature of 28
℃ to lower temperatures close to the lethal
limit. Hyperglycemia can therefore be
considered a characteristic response in this
species under cold shock. Involvement of
biogenic amines in the hyperglycemic
response was also demonstrated.
Hyperglycemic effects of epinephrine,
dopamine and serotonin were mediated
through CHH at the eyestalk level, but the
response under cold shock was not
exclusively mediated through CHH. It is
suggested that factor(s) other than CHH are
involved in the hyperglycemic response,
possibly norepinephrine or/and octopamine.
Subjects
Circadian rhythm
biogenic
amines
amines
cold shock
freshwater giant prawn
Publisher
臺北市：國立臺灣大學漁業科學研究所
Type
journal article
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