Ali Uyan

Classification of fish species with two dorsal fins using centroid-contour distance

Color, texture and shape are generally used features in order to recognise an object from an image. In this study centroid-contour distance method is used in order to classify fish species with two dorsal fins. Therefore, fish images with two dorsal fins were used from fish images database taken under specific conditions. Various image processing methods were applied on images in order to extract centroid-contour distances. These distances were used as features and Nearest Neighbour algorithm was used for classification. 15 species from 427 fish images were classified with 95% general accuracy achievement.

First Record Marbled Shrimp Saron marmoratus (Olivier, 1811) from Turkish Marine Waters

During the Scuba survey at the Cevlik coast area of the southeastern side of the Iskenderun Bay on February 3, 2018. One male specimen of marbled shrimp Saron marmoratus was collected by scoop net at a depth of 15 m. With the present study, S. marmoratus is the first time reported from Turkish marine waters. S. marmoratus probably be entered the Mediterranean through the Suez Canal.

New record of the European Finless Eel Apterichtus caecus from Iskenderun Bay, eastern Mediterranean Sea

The members of the genus Apterichtus Duméril, 1806 are rare in abundance and poorly known taxonomically and biologically. Species specific characters of the genus are characterised by the absence of all fins, a lack of cirri on the upper lip, and the posterior nostril opening outside of the mouth, usually on the upper lip (Smith & McCosker, 1999). The European Finless Eel Apterichtus caecus (Linnaeus, 1758) is distributed from the eastern Atlantic to the western basin of the Mediterranean, and from Gulf of Ginea (Bauchot, 1986; Leiby, 1990). It was first recorded from Israel at the Levantine coast by Golani (1996), followed by records off the Antalya Bay in 2007 (Fricke, Bilecenoğlu, & Sarı, 2007; Gökoğlu, Güven, Balcı, Çolak, & Golani, 2009). A new record of A. caecus from the eastern Mediterranean is presented here.

Microsatellite loci for Black Sea turbot Scophthalmus maeoticus

Several microsatellite loci which were developed and reported for turbot Scophthalmus maximus were examined for Scophthalmus maeoticus. Only five of these microsatellite loci were successfully amplified with new developed PCR conditions and can be used for routine analysis of stock identification of S. maeoticus.