ISSN:
1573-2932
Keywords:
Na+ flux
;
Cl− regulation
;
chloride cells
;
anal papillae
;
acid-sensitivity
;
crustaceans
;
insect larvae
;
fish
Source:
Springer Online Journal Archives 1860-2000
Topics:
Energy, Environment Protection, Nuclear Power Engineering
Notes:
Abstract Fishes, Zooplankton, insect larvae, and benthic invertebrates differ in their sensitivity to acidic waters. Some species are able to survive and complete their life-cycle below pH 3.5 while others are eliminated once the pH drops below 5.5. Generally, acid-sensitive fauna are highly water permeable and have difficulty regulating osmotically essential ions, such as sodium and chloride, at low pH. Increased permeability during certain stages of a life-cycle (post-molt crayfish, for example) are often associated with increased acid-sensitivity. Special adaptations, including enlarged anal papillae in Chironomids and the number and morphology of chloride cells in such diverse organisms as crustaceans, insect larvae, and fishes, may enhance acid-tolerance. To test the hypothesis that Na+ regulation can be used to predict relative acid-sensitivity of aquatic fauna we will need a mechanism for standardizing Na+ regulatory capability.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00476938
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