Factors Affecting the Distribution and Abundance of Two Prosobranch Snails in a Thermal Spring

Hammou Laamrani Département de Parasitologie et Maladies Parasitaires, Institut Agronomique et Vétérinaire Hassan II, BP 6202, Rabat-Instituts, Morocco

Khalid Khallayoune Département de Parasitologie et Maladies Parasitaires, Institut Agronomique et Vétérinaire Hassan II, BP 6202, Rabat-Instituts, Morocco

Bernard Delay Laboratoire de Génétique, URA CNRS 327, Institut des Sciences de I'Evolution, case 065 UM2, Place Eugène Bataillon, 34095, Montpellier cedex 05, France

Jean-Pierre Pointier Laboratoire de Biologie Marine et Malacologie, Ecole Pratique des Hautes Etudes, URA CNRS 698, Centre de Biologie et d'Ecologie Tropicale et Medetérranéenne, Université de Perpignan, Avenue de Villeneuve, 66860, Perpignan, France

ABSTRACT

We studied the distribuiton and abundance of two prosobranch snails (Melanopsis praemorsa and Melanoides tuberculata) in a thermal spring (27°C) in southeast Morocco. Of the physicochemical and ecological parameters measured, food availability and water velocity appeared to be the main factors affecting the spatial distribution of these snails.

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Factors Affecting the Distribution and Abundance of Two Prosobranch Snails in a Thermal Spring

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Factors Affecting the Distribution and Abundance of Two Prosobranch Snails in a Thermal Spring

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