Monoamines in the Swimbladder of Gadus callarias and Salmo irideus

Fahlén, G., B. Falck and E. Rosengren. Monoamines in the swimbladder of Gadus callarias and Salmo irideus. Acta physiol. scand. 1965. 64. 119–126.–The noradrenaline in the swimbladder of the cod and the rainbow trout is stored in short adrenergic neurons whose perikarya are located in close relation to the swimbladder itself. In the cod, the noradrenergic neurons are innervated by noradrenergic neurons that arise from the coeliac ganglion of the sympathetic chain. A hitherto unknown system of epithelial cells storing 5‐hydroxytryptamine was observed in the trout swimbladder.