Manipulation of the energetic state of Atlantic salmon Salmo salar juveniles and the effect on migration speed

Journal of Fish Biology
L PerssonA Alanärä

Abstract

Atlantic salmon Salmo salar smolts were produced with similar energetic states as wild S. salar and the effect of low energetic state on smolt migration was tested. The total energetic state of the fish (body lipids and proteins) in the spring was correlated with Fulton's condition factor (K). Fish at a low energetic state swam slower but migrated further than fish at a higher energetic state when tested in two experimental streams. During a period of starvation throughout the winter and spring, fish conserved their body-lipid reserves at 1·5% by using more protein as an energy source and the metabolic shift occurred between 3·5 and 1·5% body lipids. An energetic state of approximately 3·5 kJ g-1 (K ≈ 0·65) appeared to be the critical limit for survival.

References

Feb 3, 1977·Nature·L R Taylor, R A Taylor
Jun 15, 1992·Experientia·M A Castellini, L D Rea
Sep 16, 2011·Fish Physiology and Biochemistry·Chris NobleStephanie Yue Cottee
Mar 20, 2014·Physiological and Biochemical Zoology : PBZ·Mikkel BoelAnders Koed

❮ Previous
Next ❯

Citations


❮ Previous
Next ❯

Related Concepts

Related Feeds

Cell Migration

Cell migration is involved in a variety of physiological and pathological processes such as embryonic development, cancer metastasis, blood vessel formation and remoulding, tissue regeneration, immune surveillance and inflammation. Here is the latest research.

© 2022 Meta ULC. All rights reserved