Byrne, J E Photoperiodic activity changes in juvenile sockeye salmon (Oncorhynchus nerka). [electronic resource] - Canadian journal of zoology Aug 1971 - 1155-8 p. digital Publication Type: Journal Article ISSN: 0008-4301 Standard No.: 10.1139/z71-175 doi Subjects--Topical Terms: Adaptation, PhysiologicalAnimalsAnimals, NewbornBehavior, AnimalDark AdaptationLightSalmon--physiologySwimming