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Öğe Belone belone (Linnaeus, 1760) and spicara smaris (linnaeus, 1758) entangled in plastic collars in the dardanelles strait, turkey(The Historical Society of Southern Primorska of Koper, Institute IRRIS for Research, Development and Strategies of Society, Culture and Environment, 2019) Tunçer, Sezginer; Gündoğdu, Sedat; Çevik, Cem; Zilifli, AytuğOne of the main causes of injury and mortality in marine life is entanglement in plastic litter. Marine plastic waste can affect marine organisms in several ways: causing serious injury or death (resulting from entanglement in or ingestion of plastic items), enabling chemical and microbial transfer (by acting as a vector for the transport of biota), and producing changes in species communities. In this study, two adult individuals from the Spicara smaris and Belone belone species caught in pelagic longlines at the Dardanelles Strait were found with plastic collars around their operculum and trunk, respectively. The plastic waste items were identified as security rings of plastic bottle caps. Both species displayed several degrees of injury. After removing the gastrointestinal tract of B. belone, a plastic filament was also found. This study shows that the impact of plastic debris on marine life is worsening. © 2019, Historical Society of Southern Primorska of Koper. All rights reserved.Öğe Çanakkale boğazı'ndaki petrol kirliliği'nin bazı littoral ve sessil flora ve fauna üzerine etkilerinin araştırılması(2007) Tunçer, Sezginer; Alpaslan, Mustafa; Akbulut, Mehmet; Çelik, Şanver Ekrem; Odabaşı, Sağır Serpil; Odabaşı, Anıl Deniz[Abstract Not Available]Öğe Dalyan-İztuzu (Doğu Akdeniz) Sahilinde Mikroplastik Kirliliğinin Araştırılması(Çanakkale Onsekiz Mart Üniversitesi, 2021) Zilifli, Aytuğ; Tunçer, SezginerIn the present study, 14 sampling stations along the Dalyan-Iztuzu beach were sampled in June and July 2019 for the examination of microplastics. Samples were taken from surface waters (0-15 cm) using a manta trawl with a towing speed of 2 knots/h and a towing duration of 20 minutes. Microplastics were separated according to their shapes, types and sizes under a binocular stereo microscope. Results indicated that, the average density of microplastics were 0.148 ±0.07 particles/m2. Microplastic densities in the present study were lower compared to those of earlier studies carried out in the other parts of Mediterranean coasts and the Sea of Marmara.Öğe Gökçeada Kıyılarında (Kuzey Ege Denizi) Paracentrotus lividus ve Arbacia lixula Gonadlarında Metal Konsantrasyonları(Çanakkale Onsekiz Mart Üniversitesi, 2021) Yılmaz, Melis; Tunçer, SezginerIn this study, Pb, Cu, Zn, Cd and Fe levels in the gonads of Paracentrotus lividus and Arbacia lixula collected from the coasts of Gökçeada were determined seasonally between 2014-2015. Trace element concentrations of P. lividus from highest to lowest ranked as Zn> Fe> Cu>Pb>Cd. Trace element concentrations of A. lixula gonads from highest to lowest ranked as Fe> Zn>Cu>Pb> Cd. Trace element concentrations were statisticaly different between species and between stations and seasons. For comparison purposes in biomonitoring studies only trace element concentrations in identical tissues of sea urchins should be used. Among body tissues, gonads are recommended to be considered as biomonitor tissues, except during reproductive periods.Öğe New Alien Mediterranean Biodiversity Records (March 2021)(Hellenic Centre for Marine Research, 2021) Orfanidis, Sotiris; Alvito, Andrea; Azzurro, Ernesto; Badreddine, Ali; Ben Souissi, Jamila; Chamorro, Manuel; Tunçer, SezginerThis article includes twenty (20) new records of alien and cryptogenic species in the Mediterranean Sea, belonging to six (6) Phyla (Rhodophyta, Tracheophyta, Mollusca, Arthropoda, Bryozoa, and Chordata) distributed from the Eastern Mediterranean to the Sea of Alboran. The records are reported from nine (9) countries and can be classified into two categories: new records for the Mediterranean Sea and new records of non-indigenous species expanding within the Mediterranean Sea. The first category includes the gastropod Turbo radiatus from Lebanon coasts, the portunid crab Charybdis (Charybdis) natator from Tunis southern lagoon, the mollusc Thuridilla mazda from South Spain, and the nudibranch Okenia picoensis from the Alboran coasts of Spain and from Malta. The second category includes the bivalve Nudiscintilla cf. glabra from the Aegean coast of Turkey, the rhodophyte Colaconema codicola from the North Aegean coasts of Greece, the naked band gaper Champsodon nudivittis from the Sea of Marmara, Turkey. Also, the brachyuran Gonioinfradens giardi from the Greek Ionian waters, the codlet Bregmaceros nectabanus from the Croatian coasts of the Adriatic Sea, and the bryozoan Arbopercula tenella and copepod Parvocalanus crassirostris both from the Gulf of Trieste, Slovenian and Italian coasts, respectively. New records were also reported for the ascidian Distaplia bermudensis from brackish the Gulf of Naples, Italy, the damselfish Abudefduf cf. saxatilis and the seagrass Halophila stipulacea from Sardinia, Tyrrhenian Sea, and for the fish Paranthias furcifer from the harbour of Almeria, Alboran Sea, Spain. Through these records, an understanding of the expanding mechanisms and processes and, if possible, the development of mitigation measures within the region will be further facilitated.Öğe New and confirmed records and rare occurrences of some deep sea fishes in the Turkish waters of the northern Aegean Sea (Mediterranean Sea)(Nevsehir Haci Bektas Veli University, 2021) Dalyan, Cem; Gönülal, Onur; Kesici, Nur Bikem; Eryilmaz, Lütfiye; Tunçer, Sezginer; Öztekin, AlkanThere are very few locations in the Turkish waters which are suitable for deep sea investigations and the northern Aegean Sea is one of them. The study was conducted in the Turkish territorial and adjacent waters of the northern Aegean Sea between the years of 2011 and 2019, providing information on the distribution of some deep sea fishes, with their rare occurrences in the area. The results revealed range expansions of some of the deep sea teleosts as well as the first and the second record of some species for the Turkish waters of the northern Aegean Sea. This study provides the first record of Mora moro (Risso, 1810) for the Aegean Sea. The study also includes the confirmed records of Lestidiops sphyrenoides (Risso, 1820) and Epigonus denticulatus Dieuzeide, 1950 from the Aegean Sea, Stomias boa (Risso 1810) in the Turkish waters of the northern Aegean Sea as well as the second records of Nemichthys scolopaceus Richardson, 1848, Ceratoscopelus maderensis (Lowe, 1839), Lepidion lepidion (Risso, 1810) and Epigonus constanciae (Giglioli, 1880). © 2021 FISHTAXA. All rights reservedÖğe Understanding the public attitude towards sharks for improving their conservation(Elsevier Ltd, 2021) Giovos, Ioannis; Barash, Adi; Barone, Monica; Borme, Diego; Tunçer, SezginerSharks are among the oldest residents of the planet, they possess a unique value as top predators and constitute irreplaceable elements of marine ecosystems. Unfortunately, contemporary narratives widely presented in popular mainstream media have attached an utterly negative connotation to sharks, propagating an unsubstantiated and fabricated image of them as implacable and voracious predators. Recently a lot of attention is devoted to understanding the public perception towards sharks in order to promote their conservation given that a quarter of all shark species are facing extinction. This work assessed the current attitude of the public towards sharks on a global scale, utilizing modern technology through a single protocol that explored the importance of factors like culture, history, or educational level in shaping attitudes. We collected 13,800 questionnaires from 137 countries, with 25 countries presenting more than 100 answers each, representing in total 92% of the filled questionnaires. A generally positive attitude towards sharks emerged from our study, influenced significantly by several factors including knowledge and participation in marine conservation projects. Interestingly, shark attacks emerged as an important factor, with countries having high numbers of shark attacks exhibiting a highly positive attitude towards sharks, potentially because their citizens are more aware of the issue and the importance of sharks for the marine ecosystems. Guidelines for shifting public attitude towards sharks and consequently advancing shark conservation were also drawn.
