DBPapers
DOI: 10.5593/SGEM2014/B32/S15.070

SHELL MORPHOLOGY OF RAPANA THOMASIANA SAMPLED FROM THE ROMANIAN BLACK SEA COAST

V. Sereanu, M. Mihai, I.Meghea
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-14-8 / ISSN 1314-2704, June 19-25, 2014,Book 3, Vol. 2, 531-538 pp

ABSTRACT
Rapana thomasiana is a predatory gastropod which is considered an environmental threat for many bivalves of economic interest. While managing rapanas’ spread is difficult, large amounts of gastropods are available. This paper is part of an extensive study of marine organisms’ capitalization, in particular Rapana thomasiana, marine biowaste from the Romanian coast of the Black Sea as raw material for production of biocompatible materials with medical application. The paper presents the collection phase with focus on the morphological analysis of shells. For this purpose, representative integer samples were sampled from several sites of the Romanian seaside. Each individual was morphologically analyzed. The measurement results were processed with statistical methods in order to highlight useful information of rapana populations from the Romanian coast. For each group the mean shell weight, length, width and thickness distribution curves were plotted and the group statistics were calculated. Further, distribution normality tests (Kolmogorov-Smirnov test) were conducted and the gastropods weight was correlated according to the geometrical characteristics of the shells. Statistical analysis of rapana collected from the Romanian coast of the Black Sea, reveals that the nature of seaside substrate determinate the mass and geometric characteristics of the shells. Length and thickness of the shells have the greatest variability.

Keywords: Rapana thomasiana, shell morphology, marine waste, statistical evaluation