Vascular effects of acetyl choline catecholamines and detergents on isolated perfused gills of pink salmon oncorhynchus gorbuscha coho salmon oncorhynchus kisutch and chum salmon oncorhynchus keta

Bolis, L.; Rankin, J.C.

Journal of Fish Biology 13(5): 543-548


ISSN/ISBN: 0022-1112
Accession: 006896831

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Acetylcholine caused vasoconstriction while adrenalin produced concentration-dependent vasodilation when present in the perfusate in concentrations of 0-3 mg/l. The effect of LAS was partly blocked by propranolol suggesting the involvement of .beta.-adrenergic receptors. The maximum responses obtained with acetylcholine, adrenalin or LAS were all much greater in sea water or pre-spawning freshwater fish than in spawning fish.