title: Changes in plasma amino acid levels in a euryhaline fish exposed to different environmental salinities.
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.
authors.affiliation: CIMAR/CCMAR, Universidade do Algarve, Campus de Gambelas, 8005-139, Faro, Portugal. caragao@ualg.pt
authors.forename: Cláudia
authors.initials: C
authors.lastname: Aragão
authors.forename: Benjamín
authors.initials: B
authors.lastname: Costas
authors.forename: Luis
authors.initials: L
authors.lastname: Vargas-Chacoff
authors.forename: Ignacio
authors.initials: I
authors.lastname: Ruiz-Jarabo
authors.forename: Maria Teresa
authors.initials: MT
authors.lastname: Dinis
authors.forename: Juan Miguel
authors.initials: JM
authors.lastname: Mancera
authors.forename: Luís E C
authors.initials: LE
authors.lastname: Conceição
mesh_terms: D000596:Amino Acids / Q000097:blood* / Q000378:metabolism; D000818:Animals; D005412:Flatfishes / Q000097:blood / Q000378:metabolism*; D011897:Random Allocation; D054712:Salinity; D012623:Seawater / Q000032:analysis*; D012965:Sodium Chloride / Q000378:metabolism*
chemical_list: D000596:Amino Acids; D012965:Sodium Chloride