Ecology and distribution of the freshwater planarian Schmidtea mediterranea in Tunisia

Abdel Halim Harrath Laboratoire de Biologie de la Reproduction et du Développement, Département de Biologie, Faculté des Sciences de Tunis, Campus Universitaire, 1060, Tunis, Tunisie

Mohamed Charni Laboratoire de Biologie de la Reproduction et du Développement, Département de Biologie, Faculté des Sciences de Tunis, Campus Universitaire, 1060, Tunis, Tunisie

Ronald Sluys Institute for Biodiversity and Ecosystem Dynamics, Zoological Museum, University of Amsterdam, P. O. Box 94766, 1090, GT Amsterdam, The Netherlands E-mail: [email protected]

Fathia Zghal Laboratoire de Biologie de la Reproduction et du Développement, Département de Biologie, Faculté des Sciences de Tunis, Campus Universitaire, 1060, Tunis, Tunisie

Saida Tekaya Laboratoire de Biologie de la Reproduction et du Développement, Département de Biologie, Faculté des Sciences de Tunis, Campus Universitaire, 1060, Tunis, Tunisie

Abstract

The ecology of Schmidtea mediterranea, a freshwater planarian, is here described for the first time from Tunisia. The population consists of sexual diploids with a chromosome number of 2n = 8, and reproduces exclusively sexually through the formation of cocoons. Seasonal variation in the number of animals present as well their state of maturity, were correlated with water temperature.

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Ecology and distribution of the freshwater planarian Schmidtea mediterranea in Tunisia

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Ecology and distribution of the freshwater planarian Schmidtea mediterranea in Tunisia

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