Vol.14 – 2008 – No.1

Oil pollution of Golden Horn seawater

Selin Cumalı, Kasım Cemal Güven

Istanbul University, Institute of Marine Science and Management, Müşküle sk. No:1 Vefa, Istanbul, TURKEY

Abstract

The oil pollution was investigated in Golden Horn in February, April and May 2005. The analysis was made by ultraviolet fluorospectrophotometer and gas chromatography – mass spectrometer. The maximum oil pollution was found in the seawater under Haliç Bridge 174.50 µg/L in 04/2005, 130.50 µg/L in 05/2005, in the seawater under Unkapanı Bridge 104.90 µg/L in 02/2005 and in the seawater under Galata Bridge 56.45 µg/L in 05/2005. Many linear aliphatic (C₈-C₄₄), (C₅, C₁₄, C₂₄ derivates), cycloalkane and alkene (C₁₁-C₁₆) were detected. Aromatics 1-ring (benzene derivatives), 2-rings, benzofuran, 3-rings (anthracene, phenantrene) were identified by GC/MS analysis.

Keywords: Oil, Golden Horn, seawater, analysis

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Marine algae and seagrasses of Samsun (Black Sea, Turkey)

Veysel Aysel, Berrin Dural, Ayhan Şenkardeşler, Hüseyin Erduğan, Fulya Aysel

Çanakkale Onsekiz Mart University, Faculty of Science and Arts, Department of Biology, Çanakkale, TURKEY
Aegean University, Faculty of Science, Department of Biology, İzmir, TURKEY

Abstract

In this investigation, the presence and the distribution of the blue-green algae; Cyanophyeae, 20 taxa, red algae; Rhodophyceae, 106 taxa, one of them is new record for the Blacksea shore of Turkey, Gelidium pusillum (Stackhouse) Le Jolis var. pusillum brown algae; Fucophyceae, 27 taxa, green algae; Chlorophyceae, 21 taxa, and seagrasses, 2 taxa were identified in the upper infralittoral zone of Samsun (Black Sea) shore of Turkey. A total 176 taxon was determined.

Keywords: Turkey, Samsun, blue-green, red, brown, green algae and seagrasses

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Ecological risk assessment to populations of small benthic Crustaceans

V.G.Tsytsugina, G. G. Polikarpov

The A.O. Kovalevsky Institute of Biology of the Southern Seas, NAS, Sevastopol, 99011, UKRAINE

Abstract

Small benthic crustaceans are considered in comparison to large ones as the most vulnerable in relation to injurious effects according to proposed by us criteria of “critical” populations (species) identification. Experimental cytogenetic data on enfluence of different mutagene equivalent doses of ionising radiation and chemical mutagens (i.e. doses inducing equal mean number of cells with chromosome aberration in %) on Gammarus olivii and Idothea balticaposterity are analized and compared with results of cytogenetic analysis of natural crustacian populations. For the assessment of specimens reproductive contribution and effective population size (i.e. number of specimens determing genetic structure of next posterities) a number of embryos with spontaneous chromosome mutagenesis (up to 2% of cells with chromosome aberrations) is used as a criterion of postery of full value. It is concluded that cytogenetic analysis of female posterity allows to assess expected reduction of population adaptive possibiliity and ecological risk.

Keywords: Lonising radiation, chemical mutagens, benthic crustaceans, ecological risk

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A study on freshwater ichthyofauna of Kemer Reservoir and Akçay Stream of the Aegean region, Turkey

Gülnaz Özcan, Süleyman Balık

Mustafa Kemal University, Faculty of Fisheries, İskenderun, Hatay, TURKEY
Ege University, Faculty of Fisheries, İzmir, TURKEY

Abstract

This study was carried out to determine the ichthyofauna of Kemer reservoir and Akçay stream. As a result of examining the samples collected between December 2004 and June 2006, it was revealed that 15 fish species, belonging to 6 families, were found in the basin of Kemer reservoir and Akçay stream. Among these, Lepomis gibbosus, Silurus glanis, Oncorhynchus mykiss, Carassius gibelio and hybrid striped bass (Morone chrysops & Morone saxatilis) are alien species. Three species, Petroleuciscus smyrnaeus, Alburnoides bipunctatus, and Oncorhynchus mykiss were recorded for the first time from the Kemer reservoir and Akçay stream.

Keywords: Kemer reservoir, Akçay stream, ichthyofauna, alien fish, endemic

References

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Geldiay, R., Balık, S. (1999). Freshwater Fishes in Turkey (in Turkish). Ege Üniversitesi Su Ürünleri Fakültesi Yayınları, Izmir, 532 pp.

Güner, Y., Özden, 0., Kızak, V., Altunok, M., Tokşen, E, Alpbaz, A. (2006). Culture applications of hybrid striped bass (Morone chysops X Morone satilis). In: I. Symposium of Fish Stocking and Reservoir Management. 7-9 February 2006, (ed., Y. Emre, I. Diler), pp. 293-303.

Özcan, G. (2007). Research on biological characteristics of some economical fish populations and fish Kemer Dam Lake (Aydın) (in Turkish). PhD Thesis, Ege University, Izmir, 187 pp.

Özcan, G. (2007a). Distribution of the non-native fish species, pumpkinseed Lepomis gibbosus (Linnaeus, 1758), in Turkey. Aquatic Invasions. 2:146-148.

Özcan, G. (2007b). Distribution of non-indigenous fish species, prussian carp Carassius gibelio (Bloch, 1782) in the Turkish freshwater systems. Pakistan Journal of Biological Sciences. 10(23): 4241-4245.

Özcan, G. , Balık, S. (2007b). Meat yield and gonadosomatic index of carp (Cyprinus carpio L., 1758) in Kemer Dam Lake (in Turkish). Türk Sucul Yasam Dergisi. 3-5: 176-180.

Sarı, H.M., Balık, S., Bilecenoglu, M., Türe, G. (1999). Recent changes in the fish fauna of Lake Bafa, Aegean region of Turkey. Zoology in the Middle East. 18:67-76.

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Smith, K.G., Darwall, W.R.T. (2006). The Status and Distribution of Freshwater Fish Endemic to the Mediterranean Basin. IUCN, Gland, Switzerland and Cambridge, UK, 34 pp.

Şaşı, H. (2002). The investigation on the fish species and the bioecological characteristics of some economical fish populations in Topçam Dam Lake (Çine-Aydın) (in Turkish). PhD Thesis, Ege University, 159 pp, Izmir.

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A new deepwater fish, Chauliodus sloani Bloch & Schneider, 1801 (Osteichthyes: Stomiidae), from the Turkish waters of Levant Sea (Eastern Mediterranean)

Cem Dalyan, Lütfiye Eryılmaz

Istanbul University, Science Faculty, Department of Biology, Vezneciler, 34134 Istanbul, TURKEY

Abstract

The first record of the Viperfish Chauliodus sloani, with morphometric and meristic characteristics, in Turkish waters of Levant Sea are reported. One specimen was caught in a trawl on 26 April 2004 at a depth of ca. 400 m in (36°02′- 36°05′ N, 35°37′ – 35°29′ E). The specimen is the first sample which is caught of this species from Levant Sea.

Keywords: Stomiidae, Chauliodus sloani, deepwater fish, Levant Sea

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The crab species found in the Edremit Bay (NE Aegean Sea)

Hüsamettin Balkıs, Ayşegül Kurun

Istanbul University, Faculty of Science, Department of Biology, Vezneciler, 34134 Istanbul, TURKEY

Abstract

This study was carried out to determine the crab species existing found in the Edremit Bay and some of their ecological properties. Samples were collected from 46 stations between the years 2001-2003, at 0.5-75 m depths, by using scoop net, dredge, beam-trawl and trammel net. A total of 40 crab species belonging to 16 families were identified during the course of this study. Primary hydrographic conditions, such as temperature (13-29 ˚C), salinity (35.3-38.9 ‰) and dissolved oxygen (2.76-9.82 mg l^-1) were recorded for each sampling.

Keywords: Brachyura, Edremit Bay, Aegean Sea

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