Increases in plasma melatonin titers accompanying seawater adaptation of coho salmon (Oncorhynchus kisutch).
Plasma melatonin (MT) concentrations were measured in coho salmon using a radioimmunoassay validated for that species. Plasma MT remained constant in juvenile salmon during the parr to smolt transformation in fresh water. However, upon seawater entry plasma MT concentrations increased significantly, peaked at approximately 24 hr, then returned to levels observed for the fish in fresh water.
D000222:Adaptation, Physiological; D000818:Animals; D008550:Melatonin / Q000097:blood*; D011863:Radioimmunoassay; D012474:Salmon / Q000097:blood / Q000502:physiology*; D012623:Seawater
D008550:Melatonin