Rast i prehrambene navike vučića, Serranus hepatus (Linnaeus, 1758) u zaljevu Izmir, Egejsko more

Age, growth and diet of brown comber, Serranus hepatus, were determined from specimens collected in Izmir Bay, Aegean Sea. Total length ranged from 5.20 to 11.70 cm, while weight varied between 1.89 and 24.97 g. The length-weight relationship was W=0.0157*L2.998. Age was determined by otolith readings, where a maximum age of 4 years was observed. The von Bertalanffy growth parameters were estimated as L∞=11.90 cm, k=0.56, to=–1.14. Stomach content analysis revealed that the species is carnivorous, with benthic crustaceans constituting the main food in the overall diet composition.Starost, rast i prehrambene navike vučića, Serranus hepatus, su ustanovljene na primjercima prikupljenim u Izmirskom zaljevu, Egejsko more. Ukupna duljina kretala se od 5.20 do 11.70 cm, a težina od 1.89 do 24.97 g. Duljinsko-maseni odnos je iznosio W=0.0157*L2.998. Starost je određena prema očitanju otolita, te je ustanovljena maksimalna starost od 4 godine. Von Bertalanffy-ijevi parametri rasta su iznosili kao što slijedi: L∞=11.90 cm, k=0.56, to= –1.14. Analiza sadržaja želudaca je otkrila da ova vrsta spada u mesoždere jer su u njezinoj prehrani najzastupljeniji bili raci

Pelvic fin walking and punting behaviour of Raja radula Delaroche, 1809 observed in the Sea of Marmara

A mature female rough ray (Raja radula Delaroche, 1809) individual was observed at Sea of Marmara during a scuba dive to perform pelvic fin walking and punting, which was a previously unrecorded rajid behaviour from the Mediterranean Sea. The underwater video footage were analyzed, in which the average distance travelled per punt was measured as 0.40 disc length (DL) at an average speed of 0.26DL per second

New Mediterranean Marine biodiversity records (December, 2013)

M. Bilecenoglu [et al.]Based on recent biodiversity studies carried out in different parts of the Mediterranean, the following 19 species are included as new records on the floral or faunal lists of the relevant ecosystems: the green algae Penicillus capitatus (Maltese waters); the nemertean Amphiporus allucens (Iberian Peninsula, Spain); the salp Salpa maxima (Syria); the opistobranchs Felimida britoi and Berghia coerulescens (Aegean Sea, Greece); the dusky shark Carcharhinus obscurus (central-west Mediterranean and Ionian Sea, Italy); Randall’s threadfin bream Nemipterus randalli, the broadbanded cardinalfish Apogon fasciatus and the goby Gobius kolombatovici (Aegean Sea, Turkey); the reticulated leatherjack Stephanolepis diaspros and the halacarid Agaue chevreuxi (Sea of Marmara, Turkey); the slimy liagora Ganonema farinosum, the yellowstripe barracuda Sphyraena chrysotaenia, the rayed pearl oyster Pinctada imbricata radiata and the Persian conch Conomurex persicus (south-eastern Crete, Greece); the blenny Microlipophrys dalmatinus and the bastard grunt Pomadasys incisus (Ionian Sea, Italy); the brown shrimp Farfantepenaeus aztecus (north-eastern Levant, Turkey); the blue-crab Callinectes sapidus (Corfu, Ionian Sea, Greece). In addition, the findings of the following rare species improve currently available biogeographical knowledge: the oceanic pufferfish Lagocephalus lagocephalus (Malta); the yellow sea chub Kyphosus incisor (Almuñécar coast of Spain); the basking shark Cetorhinus maximus and the shortfin mako Isurus oxyrinchus (north-eastern Levant, Turkey).Peer reviewe

New data on the occurrence of two alien fishes, Pisodonophis semicinctus and Pomadasys stridens, from the Eastern Mediterranean Sea

The tropical Atlantic originated saddled snake eel, Pisodonophis semicinctus (Richardson, 1848) and the Indian Ocean originated striped piggy, Pomadasys stridens (Forsskål, 1775), are being recorded for the first time from Turkish coasts. First species is also a new addition to the eastern Mediterranean ichthyofauna, while the latter species has expanded its range to the northeastern Levant Sea

Nalazi dvaju rijetkih glavoča (Millerigobius macrocephalus, Zebrus zebrus) u Egejskom moru

Two goby species endemic to the Mediterranean Sea were collected from the northern and southern Aegean Sea. A new record of Millerigobius macrocephalus from the area is presented and the occurrence of zebrus zebrus off Turkish coasts is substantiated.Dvije vrste mediteranskih endemičnih glavoča su ulovljene u sjevernom i južnom Egejskom moru. Prikazan je novi nalaz vrste Millerigobius macrocephalus, te je obrazložena pojava vrste Zebrus zebrus u turskim vodama

Nalazi dvaju rijetkih glavoča (Millerigobius macrocephalus, Zebrus zebrus) u Egejskom moru

Two goby species endemic to the Mediterranean Sea were collected from the northern and southern Aegean Sea. A new record of Millerigobius macrocephalus from the area is presented and the occurrence of zebrus zebrus off Turkish coasts is substantiated.Dvije vrste mediteranskih endemičnih glavoča su ulovljene u sjevernom i južnom Egejskom moru. Prikazan je novi nalaz vrste Millerigobius macrocephalus, te je obrazložena pojava vrste Zebrus zebrus u turskim vodama

Alien species on the coasts of Turkey

The compilation of data on alien species reported from the Turkish coasts yielded a total of 263 species belonging to 11 systematic groups, of which Mollusca had the highest number of species (85 species), followed by Crustacea (51), fishes (43) and phytobenthos (39). The Black Sea is represented by a total of 20 alien species, the Sea of Marmara by 48 species, the Aegean Sea by 98 species and the Levantine Sea by 202 species. The majority of aliens found in the Black Sea and the Sea of Marmara were transported via shipping, whereas the Levantine coast is extensively subjected to Lessepsian migration. Benthic habitats (soft and hard substrata) comprise 76% of the total alien species and the pelagic environment is inhabited by thirty-nine species. Almost 50% of aliens collected from the Turkish coasts were found only at 0-10 m depth. Eight species occur at depths deeper than 100 m. The impacts of aliens on the benthic and pelagic ecosystems are presented

Neurovascular relationship between abducens nerve and anterior inferior cerebellar artery

We aimed to study the neurovascular relationships between the anterior inferior cerebellar artery (AICA) and the abducens nerve to help determine the pathogenesis of abducens nerve palsy which can be caused by arterial compression. Twenty-two cadaveric brains (44 hemispheres) were investigated after injected of coloured latex in to the arterial system. The anterior inferior cerebellar artery originated as a single branch in 75%, duplicate in 22.7%, and triplicate in 2.3% of the hemispheres. Abducens nerves were located between the AICAs in all hemispheres when the AICA duplicated or triplicated. Additionally, we noted that the AICA or its main branches pierced the abducens nerve in five hemispheres (11.4%). The anatomy of the AICA and its relationship with the abducens nerve is very important for diagnosis and treatment. (Folia Morphol 2010; 69, 4: 201-203

Northernmost occurrence of Hemiramphus far (Actinopterygii: Hemiramphidae) in the Aegean Sea

A new record of Hemiramphus far from the northern Aegean Sea is presented, based on a single specimen collected off Eski Foça shores, Turkey. Further individuals were observed (but not collected) in the same area, indicating an established population