Catecholamines in nerves and organs of Myxine glutinosa, Squalus acanthias, and Gadus callarias

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Abstract

Catecholamine analyses of organs from a cyclostome (Myxine glutinosa, hagfish), an elasmobranch (Squalus acanthias, dogfish), and a teleost (Gadus callarias, common cod) have shown the presence of both noradrenaline and adrenaline in varying amounts and proportions.

In Myxine (except in the ventricle of the heart) and in Squalus the predominating amine was noradrenaline, while in Gadus adrenaline occurred in excess of noradrenaline in most organs.

Noradrenaline was demonstrated in the vagus nerves of the cod in addition to adrenaline, but the sympathetic trunk contained adrenaline only.

Section and subsequent degeneration of the vagus fibres to the gas gland and swim bladder in the cod did not lower the catecholamine content of the muscularis mucosac.

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