Further observations on the migration of Gammarus zaddachi Sexton (Crustacea, Amphipoda) in a French stream
Bulletin Zoologisch Museum , Volume 3 - Issue 20 p. 157- 161
The migration of G. zaddachi in La Slack, a small stream on the French Channel coast, and some physico-chemical properties of the river are discussed. In laboratory experiments, the influence of the Cl- and Ca++ concentration on the survival-rate and reproduction of G. zaddachi was investigated. A raise in the Cl- concentration of the medium caused a significant improvement of the survivalrate. A raise in the Ca++ concentration also gives, although not significant, a higher survival-rate.
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Dennert, H.G, & van Maren, M.J. (1974). Further observations on the migration of Gammarus zaddachi Sexton (Crustacea, Amphipoda) in a French stream. Bulletin Zoologisch Museum, 3(20), 157–161.