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Abstract:

Adult male crayfish, Cherax quadricarinatus, were exposed to the salinities of 0 (control), 7.5, 15, 25 and 35 g L-1 for 3 weeks. Survival, oxygen consumption rate, hemolymphatic levels of glucose, lactate, sodium, potassium, pH, and free amino acids (FAA), as well as FAA concentration in muscle, were determined. Survival was significantly reduced (p < 0.05) only at the highest salinity assayed, together with a significant (p < 0.05) increase of glucose and decrease of lactate. Concerning ions, a hyper-regulation of both hemolymphatic sodium and potassium was maintained up to a salinity of 15 g L-1, at which hemolymph became isoionic with ambient water. A certain degree of ionic hypo-regulation was also noted. Hemolymph pH levels decreased as salinity increased from 0 to 15 g L-1. FAA content in muscle showed an increase parallel to that of hemolymphatic sodium, in accordance with their expected function in the isosmotic regulation of muscular cells.

Registro:

Documento: Artículo
Título:Levels of ions and organic metabolites in the adult freshwater crayfish, Cherax quadricarinatus, exposed to different salinities
Autor:Prymaczok, N.C.; Medesani, D.A.; Rodriguez, E.M.
Filiación:Department of Biodiversity and Experimental Biology, FCEyN, University of Buenos Aires, Buenos Aires, Argentina
Palabras clave:Cherax quadricarinatus; Crayfish-salinity; Ionic challenge; Ionic regulation; Physiology; adult; amino acid; crayfish; ion; metabolite; osmoregulation; pH; physiology; salinity; survival; Astacoidea; Cherax quadricarinatus
Año:2008
Volumen:41
Número:2
Página de inicio:125
Página de fin:134
DOI: http://dx.doi.org/10.1080/10236240802193893
Título revista:Marine and Freshwater Behaviour and Physiology
Título revista abreviado:Mar. Freshw. Behav. Physiol.
ISSN:10236244
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10236244_v41_n2_p125_Prymaczok

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Citas:

---------- APA ----------
Prymaczok, N.C., Medesani, D.A. & Rodriguez, E.M. (2008) . Levels of ions and organic metabolites in the adult freshwater crayfish, Cherax quadricarinatus, exposed to different salinities. Marine and Freshwater Behaviour and Physiology, 41(2), 125-134.
http://dx.doi.org/10.1080/10236240802193893
---------- CHICAGO ----------
Prymaczok, N.C., Medesani, D.A., Rodriguez, E.M. "Levels of ions and organic metabolites in the adult freshwater crayfish, Cherax quadricarinatus, exposed to different salinities" . Marine and Freshwater Behaviour and Physiology 41, no. 2 (2008) : 125-134.
http://dx.doi.org/10.1080/10236240802193893
---------- MLA ----------
Prymaczok, N.C., Medesani, D.A., Rodriguez, E.M. "Levels of ions and organic metabolites in the adult freshwater crayfish, Cherax quadricarinatus, exposed to different salinities" . Marine and Freshwater Behaviour and Physiology, vol. 41, no. 2, 2008, pp. 125-134.
http://dx.doi.org/10.1080/10236240802193893
---------- VANCOUVER ----------
Prymaczok, N.C., Medesani, D.A., Rodriguez, E.M. Levels of ions and organic metabolites in the adult freshwater crayfish, Cherax quadricarinatus, exposed to different salinities. Mar. Freshw. Behav. Physiol. 2008;41(2):125-134.
http://dx.doi.org/10.1080/10236240802193893