RESEARCH PAPER
Shell biometrical variability of Planorbis planorbis (Linnaeus, 1758) (Gastropoda: Pulmonata) in man-made water bodies of the Upper Silesian Industrial Region
| 1 | Faculty of Biology, Silesian University, Katowice, Poland |
CORRESPONDING AUTHOR
Małgorzata Strzelec
Faculty of Biology, Silesian University, Bankowa 9, 40-007 Katowice, Poland
Faculty of Biology, Silesian University, Bankowa 9, 40-007 Katowice, Poland
Publication date: 2020-07-09
Folia Malacol. 1989;3(1):159–173
KEYWORDS
ABSTRACT
The author has studied the effect of some environmental factors on the biometrical variability of the shell of the freshwater pulmonate snail Planorbis planorbis from several man-made water bodies of three types in the Upper Silesian Industrial Region. Out of the studied factors the calcium content in water did not seem to have a strong effect on the shell of the mollusc. On the contrary, a high content of magnesium ions in water seemed to inhibit the growth of the shell.
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