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- Title
Changes in plasma amino acid levels in a euryhaline fish exposed to different environmental salinities.
- Authors
Aragão, Cláudia; Costas, Benjamín; Vargas-Chacoff, Luis; Ruiz-Jarabo, Ignacio; Dinis, Maria Teresa; Mancera, Juan Miguel; Conceição, Luís E. C.
- Abstract
Previous studies have shown that Senegalese sole is partially euryhaline in the juvenile phase, being able to adapt to a wide range of salinities in a short-time period, due to changes at the osmoregulatory and metabolic level. This study aimed to assess the effects of acclimation of sole to a wide range of salinities, with a special emphasis on the role of plasma amino acids during this process. Sole juveniles were acclimated for 2 weeks to different salinities: 5, 15, 25, 38, and 55 g L−1. Plasma levels of cortisol, glucose, osmolality, and free amino acids were assessed at the end. Changes in plasma levels of cortisol, glucose, and amino acids indicate that fish reared at 5 and 55 g L−1 were facing extra energy costs. Amino acids seem to play an important role during salinity acclimation, either as energy sources or as important osmolytes for cell volume regulation.
- Subjects
SALINITY; OSMOREGULATION; AMINO acids; SOLEA (Genus); ACCLIMATIZATION; PHYSIOLOGICAL stress
- Publication
Amino Acids, 2010, Vol 38, Issue 1, p311
- ISSN
0939-4451
- Publication type
Article
- DOI
10.1007/s00726-009-0252-9