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    Effect of Fish Farming on Bioecological Characteristics of the Mediterranean Mussels Mytilus galloprovincialis Lamarck, 1819 (Bivalvia: Mytilidae): Güllük Bay Example, South Aegean Sea, Turkey
    (Institute of Biodiversity and Ecosystem Research - Bulgarian Academy of Sciences, 2024) Yildirim, Pinar; Ercan, Ertan
    This study was carried out to determine the effects of cage cultivation on bioecological characteristics of Mytilus galloprovincialis in Güllük Bay Kazikli Port between May 2013 and May 2014. An integrated multi-trophic aquaculture method was used. The growth and survival rates, age structure and reproductive success of mussels as well as water quality parameters and phytoplankton composition were monitored monthly in two selected stations. Mussels belonging to different size groups exhibited high growth and survival rates during the summer and spring when the temperature was high near the offshore systems. Applying a length-frequency analysis graph created using the shell growth limits, it was found that the mussels reached the marketing length (>50 mm) in 18 months. With this study, it has been revealed that mussel development continued in both stations and the region was suitable for potential mussel farming. © 2024 Institute of Biodiversity and Ecosystem Research - Bulgarian Academy of Sciences. All rights reserved.
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    Effect of Fish Farming on Bioecological Characteristics of the Mediterranean Mussels Mytilus galloprovincialis Lamarck, 1819 (Bivalvia: Mytilidae): Gulluk Bay Example, South Aegean Sea, Turkey
    (Inst Zoology, Bas, 2024) Yildirim, Pinar; Ercan, Ertan
    This study was carried out to determine the effects of cage cultivation on bioecological characteristics of Mytilus galloprovincialis in Gulluk Bay Kazikli Port between May 2013 and May 2014. An integrated multi-trophic aquaculture method was used. The growth and survival rates, age structure and reproductive success of mussels as well as water quality parameters and phytoplankton composition were monitored monthly in two selected stations. Mussels belonging to different size groups exhibited high growth and survival rates during the summer and spring when the temperature was high near the offshore systems. Applying a length-frequency analysis graph created using the shell growth limits, it was found that the mussels reached the marketing length (>50 mm) in 18 months. With this study, it has been revealed that mussel development continued in both stations and the region was suitable for potential mussel farming.
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    Effects of Training about Skin Cancer on Farmers' Knowledge Level and Attitudes
    (Asian Pacific Organization Cancer Prevention, 2011) Malak, Arzu Tuna; Yildirim, Pinar; Yildiz, Zuleyha; Bektas, Murat
    Background: Skin cancer is one of the most common types of cancer. As farmers stay under sun for a long time and handle many different chemicals, they are at risk. This study was carried out to examine the effects of training for protection on their knowledge level and attitudes. Method: The subjects were 194 farmers living in a village in Marmara region which most benefits from the sun in Turkey. No sampling was performed. Data were collected before and after six months of training through a personal description form and skin cancer attitude-knowledge form and analyzed using percentage calculations, McNeamer test and t-test in dependent groups. Results: Knowledge level of farmers on skin cancer and the protection from skin cancer was significantly increased after the training (p<0.01) regarding use of sun cream, umbrellas, swimming and traditional behavior (p<.01) but not use of hats, sunglasses and long-sleeved shirts (p>0.01). A significant decrease was also determined in tampering with moles, acnes and scars (p<.01). Conclusion: The training given to farmers for protection against skin cancer was found effective for improving knowledge levels and attitudes. Planned and regular education should decrease the skin cancer rate among farmers.
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    POPULATION STRUCTURE OF WEDGE CLAM, DONAX TRUNCULUS (BIVALVIA, DONACIDAE), IN THE SOUTHERN SEA OF MARMARA, TURKEY
    (Parlar Scientific Publications (P S P), 2019) Colakoglu, Serhat; Yildirim, Pinar; Cardak, Mine; Ihsanoglu, Mukadder Arslan
    The growth, reproduction, and density of wedge clam (Donax trunculus) were studied at a depth of 0.5-2 m in Denizkent in the Southern Sea of Marmara, Turkey. Samples were collected monthly between May 2017 and July 2018. The average density of the studied population ranged between 118 individuals m(-2)(November) and 245 individuals m(-2) (July). von Bertalanffy growth parameters using the length-frequency distribution of Donax trunculus were estimated at L-x = 43.85 mm and the rate at which the asymptotic length (L-x) is approached (K) = 0.73y(-1). The slowest growth period was in Janu- ary. Growth performance index, potential longevity and maximum length derived from seasonal parameters were calculated as 3.15, 4.11 y and 42 mm, respectively. The growth pattern showed negative allometric growth (slope [b] = 2.71), the spawning period occurred from April to July and peaked between May and June.
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    Seasonal variations and human health risk assessment of trace elements in the bivalve ecosystem in the Sea of Marmara
    (Taylor & Francis Ltd, 2022) Yildirim, Pinar; Cardak, Mine; Colakoglu, Serhat; Turker, Gulen; Ormanci, Hasan Basri
    Twelve trace elements were studied in four economically important bivalve molluscs (Mediterranean mussel, manila clam, striped venus clam, and truncated wedge clam) from the southern Marmara Sea for seasonal bioaccumulation and human health risk assessment. According to the findings, Fe and Zn were the most accumulative and element concentrations changed considerably (P < 0.05) between seasons and species. Daily, weekly, monthly intake and target hazard quotients of the trace elements were estimated and compared with maximum limits. The results revealed that consuming these bivalve molluscs from the southern Marmara Sea could be considered safe for human consumption. Nevertheless, further monitoring is needed in order to better follow the development in time of elemental pollution due to increasing environmental pressure on the Marmara Sea basin, together with research on other different bioaccumulative organisms.