| Issue |
Annls Limnol.
Volume 9, Number 1, 1973
|
|
|---|---|---|
| Page(s) | 25 - 44 | |
| DOI | https://doi.org/10.1051/limn/1973004 | |
| Published online | 16 June 2011 | |
L'affinité de deux protozoaires épibiontes pour les deux espèces jumelles de planaires d'eau douce Polycelis nigra et Polycelis tenuis
The affinity of two epizoic protozoa for the two sibling species of freshwater planarians Polycelis nigra and Polycelis tenuis
Département de Biologie Animale, Université Claude-Bernard, 43, boulevard du 11-Novembre, 69 - Villeurbanne.
L'étude porte sur l'association de commensalisme liant les deux Planaires jumelles Polycelis nigra et P. tenuis à deux Protozoaires Ciliés épibiontes de la famille des Urceolariidae. Urceolaria mitra est nettement majoritaire sur Polycelis tenuis, et Trichodina steini exclusive sur Polycelis nigra. Des expériences de choix attestent la préférence indiscutable des épibiontes pour leur espèce affine de Planaire.
Abstract
This study is concerned with the commensal relationship between two sibling Polycelis species of Triclads and two epizoic Ciliates belonging to the family Urceolariidae. Urceolaria mitra is clearly on Polycelis tenuis, and Trichodina steini exclusive on Polycelis nigra. Choice experiments demonstrated a definite preference of each epizoic Ciliate for the Triclad species on which it was found in the field.
© Masson, 1973
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