IBBEA   24401
INSTITUTO DE BIODIVERSIDAD Y BIOLOGIA EXPERIMENTAL Y APLICADA
Unidad Ejecutora - UE
artículos
Título:
Involvement of the crustacean hyperglycemic hormone (CHH) in the physiological compensation of the freshwater crayfish Cherax quadricarinatus to low temperature and high salinity stress
Autor/es:
PASQUALINO, VALERIA; MEDESANI, DANIEL; VIAU, VERÓNICA; PRYMACZOK, NATALIA; RODRÍGUEZ, ENRIQUE M.; PASQUALINO, VALERIA; MEDESANI, DANIEL; VIAU, VERÓNICA; PRYMACZOK, NATALIA; RODRÍGUEZ, ENRIQUE M.
Revista:
JOURNAL OF COMPARATIVE PHYSIOLOGY B-BIOCHEMICAL SYSTEMIC AND ENVIRONMENTAL PHYSIOLOGY
Editorial:
SPRINGER HEIDELBERG
Referencias:
Lugar: HEIDELBERG; Año: 2016 vol. 186 p. 181 - 191
ISSN:
0174-1578
Resumen:
This study was aimed at determining the role ofthe crustacean hyperglycemic hormone (CHH) in the physiologicalcompensation to both saline and thermal stress, inthe freshwater crayfish Cherax quadricarinatus. By determiningthe expression of the CHH gene in the eyestalk ofjuvenile crayfish, we found that maximal induction of CHHwas induced at high salinity (10 g/L) and low temperature(20 °C). In order to investigate the role of CHH in thephysiological compensation to such stressful conditions,recombinant CHH was supplied to stressed animals. CHHinjectedcrayfish showed increased hemolymphatic levelsof glucose, in accordance with a significant utilization ofglycogen reserves from the hepatopancreas. Furthermore,CHH administration allowed stressed animals to regulatehemolymphatic sodium and potassium at more constantlevels than controls. Taken together, these results suggesta relevant role of CHH in increasing the energy availableintended for processes involved in the physiological compensationof C. quadricarinatus to both saline and thermalstress.