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Osmoregulation and spatial distribution in four species of mysid shrimps
Webb, P.; Wooldridge, T.; Schlacher, T. (1997). Osmoregulation and spatial distribution in four species of mysid shrimps. Comp. Biochem. Physiol., Part A Physiol. 117A(4): 427-431
In: Comparative Biochemistry and Physiology. Part A. Physiology. Pergamon: Oxford, U.K.. ISSN 1096-4940, more
Peer reviewed article  

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Keywords
    Ecological distribution; Estuarine organisms; Osmoregulation; Salinity effects; Gastrosaccus brevifissura O. Tattersall, 1952 [WoRMS]; Gastrosaccus psammodytes O. Tattersall, 1958 [WoRMS]; Mesopodopsis wooldridgei Wittmann, 1992 [WoRMS]; Rhopalophthalmus terranatalis O. Tattersall, 1957 [WoRMS]; Marine; Brackish water

Authors  Top 
  • Webb, P.
  • Wooldridge, T., more
  • Schlacher, T.

Abstract
    This study investigates the osmoregulatory capacities of four mysid species, viz. Mesopodopsis wooldridgei, Rhopalophthalmus terranatalis, and Gastrosaccus brevifissura which occur in different zones along salinity gradients in southern African estuaries, and the psammophilic, surf-zone mysid, Gastrosaccus psammodytes. All four species maintain body fluid concentrations at species-specific levels over a range of environmental salinities. Analysis of Covariance (ANCOVA) indicated no statistical difference in body fluid concentrations among juveniles, immatures, males, and females for M. wooldridgei, R. terranatalis, and G. brevifissura. Available information suggests that biological and physical factors other than salinity are more important in determining spatial distribution of these four species in coastal waters.

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