Comparative ecophysiology of gammarids (Crustacea: Amphipoda) from marine, brackish and fresh-water habitats, exposed to the influence of salinity-temperature combinations. I. Effect on survival
Dorgelo, J. (1974). Comparative ecophysiology of gammarids (Crustacea: Amphipoda) from marine, brackish and fresh-water habitats, exposed to the influence of salinity-temperature combinations. I. Effect on survival. Hydrobiol. Bull. 8(1-2): 90-108. https://dx.doi.org/10.1007/BF02254909
In: Hydrobiological Bulletin. Netherlands Hydrobiological Society: Amsterdam. ISSN 0165-1404; e-ISSN 2214-708X, more
Also appears in:(1974). Proceedings of the International Symposium on Ecology and Physiology of the Brackish Environment, Amsterdam, September 4-7, 1973. Organized by the Netherlands Hydrobiological Society in honour of the Dutch hydrobiologist Dr. H.C. Redeke (1873-1945). Hydrobiological Bulletin, 8(1-2). Netherlands Hydrobiological Society: Amsterdam. 252 pp., more
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| Keywords |
Marine/Coastal; Brackish water; Fresh water |
| Abstract |
(1) Survival of mature males of 3 gammarids from different salinity regimes, ranging from marine to limnetic conditions, was established in order to analyze the main as well as the interaction effect of salinity and temp. The results were submitted to an analysis of variance. (2) A new modification for treatment of the survival data has been applied. (3) Chaetogammarus marinus, from the marine littoral, tolerates sub- and supranormal salinities according to an optimum curve pattern. Gammarus tigrinus, from oligohaline water, tolerates supranormal salinities up to seawater conc equally well. Survival drops distinctly in concentrated seawater. Gammarus fossarum, the fresh-water sp, shows a rapidly decreasing tolerance at supranormal salinities. (4) Salt tolerance is neither favoured nor inhibited by temp interaction in the natural salinity ranges of the sp. (5) increasing temp influences survival negatively in all spp. (6) G. tigrinus is most susceptible in spring to both salinity and temp. (7) The results are discussed with regard to the evolutionary migration from the marine environment to freshwater. |
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