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Physiology of salinity tolerance in tilapia: an update of basic and applied aspects

Published online by Cambridge University Press:  15 April 1989

Patrick Prunet  and
Michel Bornancin
Patrick Prunet
Affiliation:
INRA, Laboratoire de Physiologie des Poissons, Campus de Beaulieu, 35042 Rennes cedex, France
Michel Bornancin
Affiliation:
Université de Nice, Laboratoire de Physiologie cellulaire et comparée, Faculté des Sciences et des Techniques, parc Valrose, 06034 Nice cedex, France
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Abstract

Tilapia species are generally characterized by a large tolerance to salinity; however, such capacity to adapt to brackish or seawater may be modulated by environmental factors. The major osmoregulatory mechanisms involved in salinity adaptation are presented. Most of the available data concern the role of gills in salt or water exchange. The importance of different factors (environmental or endogenous) in such adaptation is also discussed. The second part presents a survey of the endocrine control of osmoregulation in tilapia. Both fast-acting (e. g. glucagon, urotensins, catecholamines) and long-acting (e.g. prolactin, cortisol) hormones have been studied. In conclusion, several areas of osmoregulatory physiology potentially interesting for aquaculture are discussed.

Keywords

SalinitytilapiaosmoregulationhormonesSalinitétilapiaosmorégulationhormones
Type
Research Article
Information
Aquatic Living Resources , Volume 2 , Issue 2 , April 1989 , pp. 91 - 97
Copyright
© IFREMER-Gauthier-Villars, 1989

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