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Archiv 2014

Veröffentlicht: 13.04.2014 Share it on Facebook


Schildkröten im Fokus, Bergheim 11 (2) 2014: 21–33

Der südöstliche Zipfel Europas und seine Sumpfschildkröten: Eine Tour auf der Veleka und entlang der Butamjatamündung

Text und Fotos von Hans-Jürgen Bidmon, Düsseldorf & Ivo E. Ivanchev, Banya, Bulgarien

The most southeaster corner of Europe and its terrapins: A trip on the Valeka River along the mouth of the Butamjata

Text and photos by Hans-Jürgen Bidmon, Düsseldorf & Ivo E. Ivanchev, Banya, Bulgarien


Abstract

Here we describe a journey to the most southern corner of the European coast of the Black Sea during mid-September of 2013, visiting a creek near the town of Ahtopol as well as the rivers Veleka and Butamjata, Bulgaria. Before our visit the region suffered from a long dry summer and the creek near Ahtopol was almost dry so we were unable to provide information about the persistence of Mauremys c. rivulata in this most northern locality as previously reported by Rudloff (2007). However we could confirm the presence of Emys orbicularis in a small remaining ditch of heavily polluted water below a bridge. During a boat trip on the Veleka we report about the presence of and co-existence of Emys orbicularis and M. c. rivulata of various sizes including also subadult age classes as well as adult Trachemys scripta elegans. Along the Butamjata river we were able to locate one juvenile (CL 50–60 mm) M. c. rivulata. Therefore we were able to confirm the presence of three species of freshwater turtles as reported for Bulgaria (Stonjanov et al. 2011) for the Veleka including a short discussion about the situation of invasive species.

Key words

Emys orbicularis, Mauremys caspica rivulata, Trachemys scripta elegans, freshwater turtles, Testudines, Geoemydidae, Emydidae, Bulgaria, Veleka river, Butamjata river.

Authors

Hans-Jürgen Bidmon, Düsseldorf, Germany
email: hjb@hirn.uni-duesseldorf.de

Ivo E. Ivanchev, Banya, Bulgarien
2, Bisser Str.
1421 Sofia, Bulgaria
Telefon: +359-2-865-29-25
email: geain2003@yahoo.com
www.geachelonia.org

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© Michael Daubner 2017Schildkröten im Focus