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Comparative ecophysiology of gammarids (Crustacea: Amphipoda) from marine, brackish and fresh-water habitats, exposed to the influence of salinity-temperature combinations

Comparative ecophysiology of gammarids (Crustacea: Amphipoda) from marine, brackish and... 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 temperature. 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 concentration equally well. Survival drops distinctly in concentrated seawater.Gammarus fossarum, the fresh-water species, shows a rapidly decreasing tolerance at supranormal salinities. 4. Salt tolerance is neither favoured nor inhibited by temperature interaction in the natural salinity ranges of the species. 5. Increasing temperature influences survival negatively in all species. 6. G. tigrinus is most susceptible in spring to both salinity and temperature. 7. The results are discussed with regard to the evolutionary migration from the marine environment to freshwater. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aquatic Ecology Springer Journals

Comparative ecophysiology of gammarids (Crustacea: Amphipoda) from marine, brackish and fresh-water habitats, exposed to the influence of salinity-temperature combinations

Aquatic Ecology , Volume 8 (2) – Nov 3, 2005

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References (122)

Publisher
Springer Journals
Copyright
Copyright
Subject
Life Sciences; Freshwater & Marine Ecology; Ecosystems
ISSN
1386-2588
eISSN
1573-5125
DOI
10.1007/BF02254909
Publisher site
See Article on Publisher Site

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 temperature. 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 concentration equally well. Survival drops distinctly in concentrated seawater.Gammarus fossarum, the fresh-water species, shows a rapidly decreasing tolerance at supranormal salinities. 4. Salt tolerance is neither favoured nor inhibited by temperature interaction in the natural salinity ranges of the species. 5. Increasing temperature influences survival negatively in all species. 6. G. tigrinus is most susceptible in spring to both salinity and temperature. 7. The results are discussed with regard to the evolutionary migration from the marine environment to freshwater.

Journal

Aquatic EcologySpringer Journals

Published: Nov 3, 2005

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