Vascular effects of acetylcholine, catecholamines and detergents on isolated perfused gills of pink salmon, Oncorhynchus gorbuscha coho salmon, O. kisutch and chum salmon, O. keta

• Published in: Journal of Fish Biology
• Main Authors: Bolis, L., Rankin, J. C.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 1978
• Subjects: Keta; Pacific; Oncorhynchus gorbuscha; Pink salmon
• Online Access: http://dx.doi.org/10.1111/j.1095-8649.1978.tb03466.x; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1978.tb03466.x; https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1978.tb03466.x

Acetylcholine caused vasoconstriction whilst adrenaline and isoprenaline caused vasodilation in isolated perfused Pacific salmon gills. The detergent LAS produced concentration dependent vasodilation when present in the perfusate in concentrations of 0.6 to 3 mg 1 −1 . The effect of LAS was partly blocked by propranalol suggesting the involvement of β‐adrenergic receptors. The maximum responses obtained with acetylcholine, adrenaline or LAS were all much greater in sea water or pre‐spawning freshwater fish than in spawning fish.