Activity related cost of osmoregulation in the juvenile snook (Centropomus undecimalis)

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

While at rest the snook were able to osmoregulate effectively over the range of freshwater to seawater, but in freshwater, swimming fish had the lowest physiological fitness, as evidenced by a reduced aerobic scope, and at the highest speeds (5-6 bl/s), a greatly increased muscle lactate, increased hematocrit, and an increase in plasma osmotic pressure. Freshwater fish also appeared to have a reduced capacity for handling stress. Resting or routinely active fish have sufficient energy reserves to cope with a wide range of salinities. These reserves are diminished during maximal exercise such that stamina is compromised in suboptimal salinities. -from Authors

Original languageEnglish
Pages (from-to)58-66
Number of pages9
JournalBulletin of Marine Science
Volume48
Issue number1
StatePublished - Dec 1 1991
Externally publishedYes

Fingerprint

Centropomus
osmoregulation
salinity
fish
stamens
osmotic pressure
cost
freshwater fish
handling stress
hematocrit
lactates
exercise
seawater
muscles
energy
muscle
fitness
plasma

ASJC Scopus subject areas

  • Aquatic Science
  • Oceanography

Cite this

Activity related cost of osmoregulation in the juvenile snook (Centropomus undecimalis). / Perez-Pinzon, Miguel; Lutz, P. L.

In: Bulletin of Marine Science, Vol. 48, No. 1, 01.12.1991, p. 58-66.

Research output: Contribution to journalArticle

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