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
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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
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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
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Volumen: | 41
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Número: | 2
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Página de inicio: | 125
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Página de fin: | 134
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DOI: |
http://dx.doi.org/10.1080/10236240802193893 |
Título revista: | Marine and Freshwater Behaviour and Physiology
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Título revista abreviado: | Mar. Freshw. Behav. Physiol.
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ISSN: | 10236244
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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