| Issue |
Bull. Fr. Piscic.
Number 244, 1972
|
|
|---|---|---|
| Page(s) | 111 - 118 | |
| DOI | https://doi.org/10.1051/kmae:1972012 | |
| Published online | 01 September 2008 | |
Prolifération de rotifères épiphytes et pollution thermique dans la Loire
1
Laboratoire de Génétique Evolutive et de Biométrie du CNRS, 91 - Gif-sur-Yvette.
2
Conseil Supérieur de la Pèche, Région Piscicole de Poitiers : 112, faubourg de la Cueille,
Poitiers.
Abstract
Proliferation of epiphytic Rotifers and thermal pollution in the river Loire. Near confluence of the rivers Vienne and Loire, an heated effluent from nuclear-power industry raise the water temperature to 20-28 °C This rising temperature and abundant food supply (Diatoms algae) induces a seasonal intensive reproduction of a thermophilic Rotifer species : Lacinularia flosculosa. This epiphytic Rotifer proliferate — a density of 4250 females / cm2 was observed — and colonize ail submerged substrates : aquatic plants, roots, stones, somestimes over several kilometers down stream.
© ONEMA, 1972
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