tailieunhanh - First records and microgeographical variations of culturable heterotrophic bacteria in an inner sea (the Sea of Marmara) between the Mediterranean and the Black Sea, Turkey

The microdiversity and composition of culturable heterotrophic aerobic bacteria were investigated in seawater samples taken from the Sea of Marmara (an important basin between the Mediterranean and the Black Sea) in different time periods throughout 2002-2010. | Turkish Journal of Biology Turk J Biol (2013) 37: 184-190 © TÜBİTAK doi: Research Article First records and microgeographical variations of culturable heterotrophic bacteria in an inner sea (the Sea of Marmara) between the Mediterranean and the Black Sea, Turkey 1, 1 2 1 1 Gülşen ALTUĞ *, Mine ÇARDAK , Pelin Saliha ÇİFTÇİ , Sevan GÜRÜN Department of Marine Biology, Faculty of Fisheries, İstanbul University, İstanbul, Turkey 2 Faculty of Fisheries, Çanakkale 18 Mart University, Çanakkale, Turkey Received: Accepted: Published Online: Printed: Abstract: The microdiversity and composition of culturable heterotrophic aerobic bacteria were investigated in seawater samples taken from the Sea of Marmara (an important basin between the Mediterranean and the Black Sea) in different time periods throughout 2002– 2010. The bacterial isolates were identified with the automated microidentification system VITEK 2 Compact 30 (bioMérieux, France). The compositions of identified bacteria according to their exposure to environmental factors in the areas from which they were isolated were compared. The primary hydrographic parameters (temperature, salinity, and dissolved oxygen) were recorded at the sampling station. The highest heterotrophic aerobic bacteria abundance was found in the coastal stations. It was possible to isolate enteric bacteria species from the lower and upper stratification of various marine localities, which possessed salinity values between psu and psu during the study. Six bacterial classes were determined: Gammaproteobacteria (49%), Bacilli (34%), Alphaproteobacteria (), Betaproteobacteria (), Flavobacteria (), and Actinobacteria (). This study increases the knowledge of the composition and biochemical response of bacteria isolated from eutrophic and oligotrophic areas. Twenty-three bacteria species belonging to .