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Muscle water control in crustaceans and fishes as a function of habitat, osmoregulatory capacity, and degree of euryhalinity.
- Source :
-
Comparative biochemistry and physiology. Part A, Molecular & integrative physiology [Comp Biochem Physiol A Mol Integr Physiol] 2008 Apr; Vol. 149 (4), pp. 435-46. Date of Electronic Publication: 2008 Feb 11. - Publication Year :
- 2008
-
Abstract
- This study aimed at detecting possible patterns in the relationship between Anisosmotic Extracellular Regulation (AER) and Isosmotic Intracellular Regulation (IIR) in crustaceans and teleost fish from different habitats and evolutionary histories in fresh water (FW), thus different osmoregulatory capabilities, and degrees of euryhalinity. Crustaceans used were the hololimnetic FW Aegla schmitti, and Macrobrachium potiuna, the diadromous FW Macrobrachium acanthurus, the estuarine Palaemon pandaliformis and the marine Hepatus pudibundus; fishes used were the FW Corydoras ehrhardti, Mimagoniates microlepis, and Geophagus brasiliensis, and the marine-estuarine Diapterus auratus. The capacity for IIR was assessed in vitro following wet weight changes of isolated muscle slices incubated in anisosmotic saline (~50% change). M. potiuna was the crustacean with the highest capacity for IIR; the euryhaline perciforms G. brasiliensis and D. auratus displayed total capacity for IIR. It is proposed that a high capacity for IIR is required for invading a new habitat, but that it is later lost after a long time of evolution in a stable habitat, such as in the FW anomuran crab A. schmitti, and the Ostariophysian fishes C. ehrhardti and M. microlepis. More recent FW invaders such as the palaemonid shrimps (M. potiuna and M. acanthurus) and the cichlid G. brasiliensis are euryhaline and still display a high capacity for IIR.
- Subjects :
- Animals
Anomura physiology
Catfishes physiology
Extracellular Fluid physiology
Fresh Water chemistry
In Vitro Techniques
Intracellular Space physiology
Osmolar Concentration
Osmotic Pressure
Palaemonidae physiology
Perciformes physiology
Adaptation, Physiological
Crustacea physiology
Ecosystem
Fishes physiology
Muscles physiology
Water-Electrolyte Balance
Subjects
Details
- Language :
- English
- ISSN :
- 1531-4332
- Volume :
- 149
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Comparative biochemistry and physiology. Part A, Molecular & integrative physiology
- Publication Type :
- Academic Journal
- Accession number :
- 18325804
- Full Text :
- https://doi.org/10.1016/j.cbpa.2008.02.003