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Scale morphometry allows discrimination of European sardine Sardina pilchardus and round sardinella Sardinella aurita and among their local populations |
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| Authors: | Zs Bräger T Moritz A C Tsikliras J Gonzalvo M Radulovi? Á Staszny |
| Institution: | 1. University of Pécs, Department of Ecology, Pécs, Hungary;2. Deutsches Meeresmuseum, Stralsund, Germany;3. Aristotle University of Thessaloniki, School of Biology, Laboratory of Ichthyology, Thessaloniki, Greece;4. Tethys Research Institute, Milan, Italy;5. Blue World Institute of Marine Research and Conservation, Veli Lo?inj, Croatia;6. Szent István University, Department of Aquaculture, 2100, G?d?ll?, Hungary |
| Abstract: | Landmark‐based geometric morphometric analysis revealed differences in scale shape between European sardine Sardina pilchardus and round sardinella Sardinella aurita as well as among the local populations of each species. Fish scale measurements from four different areas in the central and eastern Mediterranean Sea showed that the mean scale shape of the two species using landmark data could be differentiated with high certainty. Populations of S. aurita from the central and eastern Mediterranean Sea could be separated reliably (P < 0·001) with an average discrimination rate of 91%, whereas the average discrimination of the S. pilchardus populations was lower (80%), albeit still high. |
| Keywords: | clupeid discriminant function analysis geometric morphometrics landmarks scale shape |