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 Dhaouadi-Hassan, S., J.P. Trilles, G. Charmantier, and M. Boumaïza (2004) Ecophysiologie d’une crevette d’eau douce, Atyaephyra desmarestii (Millet, 1831) (Crustacea, Decapoda) dans trois barrages tunisiens: résultats préliminaires. Zoologica baetica 15: 175–183. PDF is 167kB

 

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2008-10-08 N. Dean Pentcheff Viewed paper/PDF original

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Reference ID 28074
Reference type journalarticle
Authors Dhaouadi-Hassan, S.
Trilles, J.P.
Charmantier, G.
Boumaïza, M.
Publication Year (for display) 2004
Publication Year (for sorting) 2004
Title Ecophysiologie d’une crevette d’eau douce, _Atyaephyra desmarestii_ (Millet, 1831) (Crustacea, Decapoda) dans trois barrages tunisiens: résultats préliminaires
Secondary Title Zoologica baetica
Secondary Authors  
Tertiary Title  
Tertiary Authors  
Volume 15
Issue  
Pages 175–183
Place published  
Published  
Date  
URL
Abstract
Atyaephyra desmarestii has a wide distribution in continental waters around the world. The study of this species is carried out on the level of three Tunisian reservoirs, Sidi Salem, Lebna and Sidi Saâd dams. Distance among these three reservoirs, their location on three distinct bioclimatic areas, the absence of hydro- logical communication between them and their differences in salinity (average values 1.37, 0.7 and 2.8‰, respectively), as well as morphological and biological differences appearing among individuals of the three populations, encouraged us to look for the existence of possible differences in osmotic regulation in the three populations. The preliminary results obtained did not show significant differences in the osmotic regulation among the three populations. The recorded osmotic pressures obtained for individuals maintained during 24 hours in fresh water mediums at osmotic pressures of 7 mos.kg -1 (Sidi Salem shrimps) and 6 mos.kg -1 (Sidi Saâd and Lebna shrimps) were 330 ± 18.33, 333 ± 20 and 326 ± 27 mos.kg -1 for the populations of each reservoir, respectively. In salt water (approximately 25‰, obtained by dilution of sea water from Montpellier by addition of distilled water), the shrimps were maintained for 24 hours in salted mediums of osmotic pressures of 804 mos.kg -1 (Sidi Salem shrimps), 757 mos.kg -1 (Sidi Saâd shrimps) and 756 mos.kg -1 (Lebna shrimps) the osmotic pressures recorded for the three populations were respectively 809 ± 8, 761 ± 11 and 760 ± 10 mos/kg. Thus, an intraspecific physiological variation between these populations did not appear to exist for the mineral-water metabolism and under the conditions of the experiment. However this study has permitted us to identify for the first time the hyper-iso-osmotic type of regulation of this fresh-water crustacean.
Keywords  
Remarks “baetica” really is lowercase in the journal name.
Reference Contributor Tag rlerosey
Last Changed Wed Dec 5 10:57:53 2012

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