Underyearling pink and chum salmon in the western Bering Sea during the fall season (September and October 2013): Distribution, feeding habits, and growth patterns

Underyearling pink and chum salmon in the western Bering Sea during the fall season (September... The ontogeny of a year class of pink and chum salmon is described for the period after the redistribution of underyearling individuals from coastal waters to deep-sea areas of the western Bering Sea in September and October, 2013. The intensity of their feeding was high; their diet included hyperiids, pteropods, and juvenile euphausiids. The metabolic costs of growth reached only 20% of the consumed food, which indicates significant energy costs for locomotion; moreover, as the body size increases, the level of metabolic functions rises at a decreasing rate, which causes the body growth to slow down and food consumption to decrease. The main items in the diet of underyearling salmon are characterized by a low content of dry matter, low lipid content, and, consequently, a low calorie content, i.e., underyearlings mainly consume protein-rich food with a low fat content. The chemical composition of the tissues almost did not differ between underyearling pink and chum salmon. Both species typically had a low fat content in their muscles. Thus, fat is not accumulated at this stage of ontogeny; all energy that is obtained with food, after being used for locomotion and metabolism, is spent for linear growth. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Marine Biology Springer Journals

Underyearling pink and chum salmon in the western Bering Sea during the fall season (September and October 2013): Distribution, feeding habits, and growth patterns

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Publisher
Pleiades Publishing
Copyright
Copyright © 2015 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Freshwater & Marine Ecology
ISSN
1063-0740
eISSN
1608-3377
D.O.I.
10.1134/S1063074015070044
Publisher site
See Article on Publisher Site

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