Metazoan parasites of catfish (Silurus glanis, Linnaeus,1758) from Durusu (Terkos ) Lake
Erhan Soylu
Vacational School of Technical Sciences, Fisheries Department, Marmara University, Istanbul, 34722, TURKEY
Abstract
Total 43 Silurus glanis samples were investigated in order to detect parasites from June 2002 to May 2003 taken from Durusu (Terkos) lake. Parasites belonging to six species were recorded; Ancylodiscoides siluri (Zandt, 1924) and Ancylodiscoides vistulensis (Sivak, 1932) from Monogenoidea, Siluritaenia siluri (Batsch, 1786) from Cestoidea, Diplostomum sp. from Trematoda, Eustrongylides excisus (Jagerskiöld, 1909) from Nematoda and Argulus foliaceus(Linnaeus, 1758) from Crustacea.
Keywords: Fish, parasites, Monogenea, Cestoda, Trematoda, Nematoda, Crustacea
Life history pattern of an Eurasian Cyprinid, Rhodeus amarus, in a large drinking-water system (Ömerli Dam Lake-Istanbul, Turkey)
Ali Serhan Tarkan, Özcan Gaygusuz, Çigdem Gürsoy, Hasan Acipinar
Istanbul University, Faculty of Fisheries, Ordu Cad. No: 200, 34470 Laleli, Istanbul, TURKEY
Çanakkale Onsekiz Mart University, Natural and Applied Sciences Institute, 17100, Çanakkale, TURKEY
Istanbul University, Natural and Applied Sciences Institute, 34850, Istanbul, TURKEY
Abstract
The life history pattern (age, growth and reproduction) of bitterling, Rhodeus amarus (Bloch, 1782), was studied in the Ömerli Dam Lake a large drinking water system located in Istanbul (Turkey) between April 2003 to August 2004. Age determination based on opercula readings and validated by scale readings and length frequency analysis shows that population has a 5-year life cycle. The von Bertalanffy growth function was fitted to length-at-age data and displayed variation in growth rates between sexes. Total length-weight relationship was estimated as W = 0.0077TL3.29 for males and W = 0.022TL2.73 for females. Spawning season was from April to August. The ratio of males to females was 1:2.32. Condition of male increased from August until April while condition of females fluctuated throughout the year.
Keywords: Rhodeus amarus, age, growth, life history, Ömerli Dam Lake
Monitoring of radionuclide concentrations in marine algae from the Turkish Black Sea coast and Bosphorus during the period of 1984-2001
Sayhan Topcuoglu
Department of Radiobiology, Çekmece Nuclear and Training Center, P. O. Box,1, Atatürk Airport 34149 Istanbul, TURKEY
Abstract
The anthropogenic radionuclide concentrations were reviewed in macroalgae species were collected from Black Sea and Bosphorus stations in 1984 to 2001. The results showed that the Sinop region was more contaminated than the Şile region on the Black Sea coast of Turkey from the Chernobyl accident. The highest concentration of 137Cs radionuclide was found after Chernobil accident in C. linum as 34 Bq kg-1 (dry weight) during July 1986. The concentrations of the 137Cs activity in 1987 and 1988 samples were gradually decreased. However, the 137Cs activity detected as 11 Bq kg-1 (dry weight) in 1992. On the other hand, 137Cs levels in tested algae samples were found as below limit of detection after 1994. The natural radionuclide concentration of 210Po, 210Pb and 40K in macroalgae samples are within the range of cited values in the literature.
Keywords: Radionuclide, macroalgae, Black Sea, Bosphorus
Marine flora of Kastamonu (Black Sea, Turkey)
V. Aysel, H. Erdugan, B. Dural-Tarakçi
Çanakkale Onsekiz Mart University, Faculty of Science and Arts, Biology Department, Çanakkale, TURKEY
Ege University, Faculty of Science, Biology Department, Izmir, TURKEY
Abstract
In this research, marine algae and seagrasses in the upper infralittoral zone of the Black Sea, coast of Kastamonu, was investigated. A total of 259 algae and 3 seagrasses taxa were determined. These are the blue-green bacteria (22 taxa), red algae (133 taxa), the brown algae (56 taxa), the green algae (48 taxa) and the flowering plants (3 taxa). Eupogodon planus, Spermothamnion repens (Rhodophyceae), Planophila microcystis and Stromatella monostromatica (Fucophyceae) are new records for Black Sea and Turkish black sea shores.
Keywords: Blue-green bacteria, red algae, brown algae, green algae, seagrasses, Kastamonu, Black Sea, Turkey
Review of fish fauna of the Sea of Marmara
L. Eryılmaz, N. Meriç
Marine flora of Kastamonu (Black Sea, Turkey)
V. Aysel, H. Erdugan, B. Dural-Tarakçi
Monitoring of radionuclide concentrations in marine algae from the Turkish Black Sea coast and Bosphorus during the period of 1984-2001
Sayhan Topcuoglu
Life history pattern of an Eurasian Cyprinid, Rhodeus amarus, in a large drinking-water system (Ömerli Dam Lake-Istanbul, Turkey)
Ali Serhan Tarkan, Özcan Gaygusuz, Çigdem Gürsoy, Hasan Acipinar
Metazoan parasites of catfish ( Silurus glanis, Linnaeus,1758 ) from Durusu (Terkos ) Lake
Erhan Soylu
