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Table 1 Review of S. polychroa distribution data. * indicates that ploidy composition varies between sites within the same locality. A = diploid, sexual, B = triploid or tetraploid parthenogenetic with synaptic oogenesis, C = triploid parthenogenetic with asynaptic oogenesis, D = tetraploid parthenogenetic with asynaptic oogenesis, x = parthenogenesis type not identified.

From: Phylogeography of competing sexual and parthenogenetic forms of a freshwater flatworm: patterns and explanations

Location 2x 3x 4x Reference
Mediterranean Islands     
Elba, Rio Elba A    [28]
Sardegna, locality not specified A    [28]
Sardegna, 7 localities (streams, rivers) on the Northern part of the island A    [68]
Sardegna A C D [69]
Sicilia, Palermo   C   [28]
Italy     
Napoli (Sarno)   B   [28]
Roma   C   [28]
Lago Trasimeno and surroundings A    [26]
Lago di Chiusi A    [26]
Perugia   C   [28]
Camerino A    [28]
Follonica   C D [28]
Maremma toscana   B   [28]
Pisa and surroundings A    [28]
Monti pisani, several sites (streams, ditches) A x x [25], [26], [45], [70]
Vaiano x x x J. Zeitlinger (unpublished data)
Forli A    [28]
Firenze   C   [28]
Pallanza   B   [28]
Starno   B   [28]
Torino A    [28]
Pavia   B   [28]
Ferrara A    [28]
Lago di Mergozzo A    [48]
Lago Maggiore* A B   [48]
Lago Maggiore A    [27]
Lago Maggiore   B   [28]
Lago di Varese   x   this study
Lago di Lugano   x x this study
Laghi di Mezzola / Annone   B   [28]
Lago di Como,   x x this study
Lago di Como, Santa Marina   x   [25]
Lago di Garlate   x x [25], this study
Lago d'Iseo   B   [71]
Lago d'Iseo A B   [72]
Lago d'Iseo* A x x this study
Lago d'Idro A    this study
Lago di Garda A    [28], this study
Lago di Garda A B   [27]
Sarca / Arco A    [28]
Sarca / Arco A B   this study
Lago di Toblino A    [25], [26], [28]
Lago di Caldonazzo   B   [28]
Lago di Caldonazzo* A x x [21], [25], [26]
Lago di Levico A    [25], [26]
Brenta / Levico A   x this study
Lago di Pietrarossa, pr. Monfalcone A    [28]
Austria     
Graz A    [73]
Ossiacher See   x x this study
Millstaedter See   x x this study
Fuschl-See   x x this study
Donau, Wien   x   [25]
Hungary     
Velencei-tò A    this study
Feher-tò A    this study
Spain     
Rio Henares, Chilieches, Alcala de Henares A    [74]
Algemesi, Valencia A x   [49]
Rio Palancia, Sagunto, Prov. Castelló A    this study
Germany     
Main, Zellingen   x x [25]
Main, Hallstadt   x   [25]
Regnitz, Pettstadt   x x [25]
Regnitz, Hüttendorf   x x [25]
Altmühl, Treuchtlingen   x x [25]
Tübingen   B   [28]
Ammersee, Herrsching   x x [25], [26]
Ammersee, Wartaweil   x x L. Gerace, M. Storhas (unpublished data)
Maisinger See, Maising   x   [25]
Isar, München   x x [26]
Würm, Starnberg   x   [25]
Starnberger See, Feldafing   x   [25]
Riegsee, Murnau   x   [25]
Tegernsee   x   M. Storhas (unpublished data)
Chiemsee, Chieming   x x [25], [26]
Waginger See, Tettenhausen   x x [25], [26]
Frankfurt    B [28]
Würzburg   B   [28]
Mainz   B   [28]
Münster   x   M. Storhas (unpublished data)
Plön, 3 lakes in the surroundings   x x this study
Switzerland     
Aarau   B   [28]
Zürichsee   B   [28]
Lago di Lugano, Riva San Vitale   B   [28], this study
Lago Maggiore, Locarno   x x this study
France     
Nizza    D [28]
Gardon   x   [25]
Lac de Nantua   x   [25]
Montpellier   B   [71]
Tet / Perpignan   x x this study
Lac Leman, Nernier   x   this study
Lac d'Annecy, Annecy   x   this study
Lorraine   x x [75]
Strasbourg   B   [28]
Les Rinfillières   x   this study
Paris   B   [28]
Paris, surroundings   x   [76]
Luxemburg: Moselle & Sure, several sites   B   [46]
Belgium: Kempens Kanaal, Turnhout   x   Beukeboom et al. (1996)
The Netherlands     
Abcoudermeer, Abcoude   x x [25]
't Gein, Abcoude   x   [25]
De Vecht, Uitermeer   x x [25], [26]
De Vecht, Hinderdam   x x [25]
Spiegelplas, Hinderdam   x x [25]
Hilversums Kanaal, Kortenhoef   x x [25]
Denmark     
Copenhagen   B   [28]
Lake Färe   B   [28]
Kundsø   B   [27]
Ålborg, lake    x this study
Sweden     
Lake Mälar   B   [28]
Lake Ivøsjøn   B   [27]
Värnamo     [27]
Hjälmaren   B   [27]
Lake Yddingen A B   [27]
Lake Vansbjøn   B   [27]
The Baltic, E. of Småland A    [27]
Lake Eketräsk A    [27]
Scania   B   [27]
Great Britain     
Cole Mere, The Mere, Windermere, Johnston Loch, Loch Linlithgow   B   [77]
Sheffield   x   [26]
Oxford   B   [28]
Shropshire   B   [73]
Wales (not specified)   B   [27]
S. Andrew   B   [28]
Loch Bardowie, Glasgow   x   this study
Northern Ireland     
Armagh, 7 lakes in the surroundings   B, C   [78]
Canada     
St. Lawrence River, Cornwall (Ontario)   x   [53], [79]
Lake Ontario, Prinyer Cove, near Picton   x   [53], [80]
United States of America     
Lake Champlain, Burlington (Vermont)   x   [53], [79]