Ege Journal of Fisheries and Aquatic Sciences最新文献

{"title":"Trace element bioaccumulation and health risk assessment derived from leg consumption of the marsh frog, Pelophylax ridibundus (Pallas, 1771)","authors":"Hale Tatlı, A. Altunışık, Kenan Gedik","doi":"10.12714/egejfas.39.3.02","DOIUrl":"https://doi.org/10.12714/egejfas.39.3.02","url":null,"abstract":"Amphibians, which can live in aquatic and terrestrial environments, are a good indicator of pollution in these areas. Although frog leg is not consumed frequently in some cuisines, including Turkey, it is important in terms of evaluating metal accumulation since it is preferred as human food in many European countries. In this study, the quantities of trace elements (Cd, Pb, Cu, Zn, As, Co, Cr, Ni, Mn, V) were measured in the edible tissues (muscles) of an amphibian species by sampling from two frog farms in Turkey. It was aimed to assess possible health hazards for humans by frog legs consumption comparing with the toxicological limit values, including provisional tolerable weekly intake (PTWI), target hazard quotient (THQ), and Hazard Index (HI). In general, the average values (µg kg−1) of trace elements were Zn (3.437.62)> Pb (69.22)> Cu (66.72)> Mn (35.07)> As (24.24)> Cr (11.47)> Ni (6.94)> Cd (6.51)> Co (2.97)> V (<0.001). The results indicated that concentrations of the analyzed trace elements were determined below the European Commission’s permitted levels and edible tissues of the marsh frog posed no carcinogenic health risk to humans.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86314468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ecological risk assessment of heavy metals after dredging in Mogan Lake, Turkey","authors":"Arzu Binici, S. Pulatsü","doi":"10.12714/egejfas.39.3.04","DOIUrl":"https://doi.org/10.12714/egejfas.39.3.04","url":null,"abstract":"The lake management strategy of sediment dredging (removal) is periodically undertaken in shallow, eutrophic Mogan Lake, an important recreation area. This study aims to use certain indices - enrichment index (EF), contamination/pollution index (CF), degree of contamination (Cd), pollution load index (PLI), geoaccumulation index (Igeo), potential ecological risk index (Eri), integrated ecological risk index (PER), and mean probable effect concentration quotient (mPEC-Q) - to evaluate the state of sediment pollution in the lake after dredging. With this in mind, after dredging was completed, two stations in the littoral zone were selected. Station I was located especially where it would be reached by wastewater from mineral processing facilities and domestic areas; and Station II, where it would be reached by residential and agricultural wastewater. Surface sediment samples were taken repeatedly in May and November 2020 using a sediment grabber. According to the study findings, a) Among the heavy metals studied (Hg, As, Cd, Cr, Pb, Ni, Cu, and Zn), Cu, As, and Cd were found to have the highest enrichment and contamination indices; b) The pollution load index (PLI) values (1.30-2.26) suggest heavy metal pollution in the sediment, and the geoaccumulation index (Igeo) values show intensive Pb contamination at both stations in both months; c) In terms of potential ecological risk index (Eri), Cd was found to have a significant level of ecological risk index; d) The integrated risk index (PER) indicates that all heavy metals in the lake were present at moderate ecological risk levels. Ni and As were metals that had negative biological effects. The results indicate that a) Dredging is not a very effective tool for reducing pollution in the sediment; and b) As long as anthropogenic pollutants continue to enter the lake basin, sediment heavy metal levels should be routinely monitored, particularly those with ecological and biological effects on the sediment: Cu, Cd, Pb, Ni and As. It is predicted that the findings of this study will contribute to the sediment-focused monitoring efforts of organizations and local governments.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73630170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of competitiveness power of fishing and aquaculture industry in Turkey","authors":"Ç. Yıldırım, H. Türkten, V. Ceyhan","doi":"10.12714/egejfas.39.3.10","DOIUrl":"https://doi.org/10.12714/egejfas.39.3.10","url":null,"abstract":"There has been a significant lack of data on product and input markets, aquaculture consumption characteristics, production, distribution and marketing issues, and supply and value chain in Turkish fishing and aquaculture sectors. Therefore, the study examined the competitiveness of the Turkish aquaculture industry. Time series data belonging the time period of 1976-2020 gathered from Food and Agriculture Organization (FAO), World Trade Organization and Turkish Statistical Institute (TURKSTAT) were used in the study. In the research, the competitiveness of the Turkish fishing and aquaculture sector has been explored by using the Balassa index, total factor productivity and production costs. The research results show that the fisheries in Turkey are small-scale, technological level are insufficient and there are financial problems. Based on the revealed comparative advantage (RCA) values of the world and EU, which are 0.65 and 1.86, respectively, Turkey 's has competitive power over EU countries, while the reverse is the case for the world. Although fisheries supply chain has been established in Turkey, the value chain has not yet been fully established and activated. The study suggests increasing the efficiency in aquaculture production, having a strong interaction with the market during the production phase, having a high awareness of the price trends and consumer needs throughout the supply chain, using modern production and distribution technologies, and developing effective extension/education activities to reach the desired point in the Turkish aquaculture sector. Quality standards should be at the international level to increase export opportunities and competitiveness of Turkish aquaculture sector.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78748983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mollusc fauna of Kemer Bay (Sea of Marmara)","authors":"Banu Bitlis, B. Öztürk, Y. Şen","doi":"10.12714/egejfas.39.3.07","DOIUrl":"https://doi.org/10.12714/egejfas.39.3.07","url":null,"abstract":"In the present study, mollusc species distributed in the Kemer Bay (Sea of Marmara) were determined seasonally (November, February, May, and August) in the years 2010 and 2011. The benthic samples were collected from different biotopes in 16 stations at depth ranging between 0.2 and 5 m by using a quadrate sampling gear. As a result of the evaluation of collected benthic materials, a total of 66 mollusc species belonging to 3 classes (Polyplacophora, Gastropoda, and Bivalvia) were identified. When the number of species and individuals are compared based on the seasons, maximum number of species (46 species) and individuals (168825 ind. m-2) were counted in autumn and spring, respectively. Mytilus galloprovincialis (Lamarck, 1819) and Mytilaster lineatus (Gmelin, 1791) were the most abundant species in all the seasons. Whereas, Bittium reticulatum (da Costa, 1778), Rissoa membranacea (Montagu, 1803), and Tricolia pullus pullus (Linnaeus, 1758) were characterized as species having the highest frequency index values in all seasons.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91076773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of different thawing methods on fatty acid composition of cultured sea bass (Dicentrarchus labrax Linnaeus, 1758)","authors":"Cansu Metin, Y. Alparslan, Zerrin Ekşi, T. Baygar","doi":"10.12714/egejfas.39.3.05","DOIUrl":"https://doi.org/10.12714/egejfas.39.3.05","url":null,"abstract":"This study aimed to determine the potential changes in the fatty acid composition of frozen cultured sea bass (Dicentrarchus labrax) thawed at different environmental conditions. Sea bass fillets were thawed using four different methodologies: refrigerator (+4°C), water (+15°C), microwave (defrost mode) and ambient conditions (22±2°C). Some part of the fish was thawed once (on the 7th and 30th days), and the other part was thawed twice (on the 30th day). Thus, crude lipid analysis and fatty acid composition by gas chromatography were carried out in the thawed sea bass fillets. The results showed negative effects on the fatty acid composition caused by the different thawing methods. The most suitable thawing method was determined as refrigerator thawing, especially on the 30th day 1st thawing according to least loss of the lipid values (9.19±0.18%) and unsaturated fatty acids (C18:2 25.92±0.13%, C20:5 5.56±0.02%, C22:6n-3 8.90±0.09%, ∑PUFA 44.70±0.04%). Samples thawed in water and ambient conditions follow the refrigerator thawing method in terms of lipid and fatty acids. The highest lipid and fatty acid loss was observed in microwave thawing. Although the samples thawed in the refrigerator were better than the other groups in terms of lipid content and fatty acid composition, it is recommended to the consumers that frozen foods should be thawed only once and consumed immediately, and that fish should be frozen according to their needs and thaw as much as they can consume.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89777115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seasonal changes in antioxidant defense system indicators in the tissues of Cyprinion macrostomus (Heckel, 1843) caught from Göynük Stream (Bingöl, Turkey)","authors":"M. Kırıcı, Nurgül Şen Özdemir, F. Caf, M. Koyun","doi":"10.12714/egejfas.39.3.01","DOIUrl":"https://doi.org/10.12714/egejfas.39.3.01","url":null,"abstract":"In this study, antioxidant enzyme activities (superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase GPx), glutathione reductase (GR) and glucose 6-phosphate dehydrogenase (G6PD)) and malondialdehyde (MDA) levels occurring throughout the year were examined in Cyprinion macrostomus tissues (kidney, gill, liver and gonad) captured from Göynük Stream (Bingöl, Turkey). For this purpose, two locations (Ilıcalar and Garip) where fish can be caught regularly in summer, autumn, winter and spring were determined. Fish were caught regularly from these two locations every month and brought to the laboratory. Spectrophotometric methods were used to determine enzyme activities and MDA levels in the study. As a result of the study, it was determined that the MDA level and enzyme activities between Ilıcalar and Garip stations, in general, were statistically different from each other in all tissues. However, it was observed that there were important differences in general between the seasons at both stations. In addition, while GR and G6PD activities were lower than other enzyme activities throughout the study, CAT and SOD activities were higher.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91122560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Maximum length record and some biological characters of devil firefish Pterois miles Bennett, 1828 for Aegean Sea, Turkey","authors":"O. Soykan, A. Ulaş","doi":"10.12714/egejfas.39.2.10","DOIUrl":"https://doi.org/10.12714/egejfas.39.2.10","url":null,"abstract":"Present work reports the maximum size record of Pterois miles for Turkish Seas with some additional biological information. The greatest individual of P. miles was caught off Çökertme Bight, Bodrum (Southern Aegean Sea) at 10 m depth with a spear gun on 15 July 2021. Captured individual of devil firefish was 34.0 cm in total length and 707.55 g in total weight. Specimen was male with a gonad weight of 13.6 g and it was determined to be 6 years old. A prey fish Chromis chromis were detected in the stomach in definable visible condition. Total length and weight of the mentioned individual are the greatest for the Turkish Seas among the reported studies up to date.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78708963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Weight and color evaluation of whole and filleted carp by image analysis","authors":"Bahar Gümüş, E. Gümüş, M. Balaban","doi":"10.12714/egejfas.39.2.06","DOIUrl":"https://doi.org/10.12714/egejfas.39.2.06","url":null,"abstract":"Weight estimation of whole fish and fillets, and skin color of whole fish and fillet meat colors of the male and female scaled and mirror carp (Cyprinus carpio) were evaluated by image analysis. After measuring the weight of 10 scaled and 10 mirror carp and their fillets, pictures of both sides of whole fish, and meat side of fillets were taken in a light box. The relationship between weight (W) and view area (V) was calculated by linear (W = A + BV), and power (W = A VB) equations. According to the power equation B values, scaled and mirror carps showed positive allometric growth in culture conditions. Statistically, there was no significant difference between the parameters of whole fish left and right sides, as well as whole fish gender. The same was true for right and left fillets, and female and male fish fillets. For both left and right sides scaled and mirror carp had no difference between average L*, a* and b* values (P>0.05). Also, there was no difference between average L*, a* and b*values of male and female of scaled and mirror carp fillets (P>0.05). Image analysis can be used to determine the size, weight, view area and skin and meat color of two carp species and their fillets.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81431738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stuffed mussels in Turkish culinary culture: Ottoman Empire period","authors":"F. Çolakoğlu, İbrahim Ulaş Yüzgeç, S. Çolakoğlu","doi":"10.12714/egejfas.39.2.12","DOIUrl":"https://doi.org/10.12714/egejfas.39.2.12","url":null,"abstract":"Food and nutrition habits of societies are mostly shaped depending on the geography they live in and settle in their cultures over time. It is seen that the food culture of the Turks is shaped by the changing geography, climate, local products and various cultural interactions. Stuffed mussels is a type of street food that entered Turkish culinary culture during the Ottoman Empire. In fact, “dolma” is a name given to vegetables and fruits stuffed with rice, bulgur, meat, nuts, peanuts and spices, but in Turkish cuisine, this dish is served with almost all kinds of main ingredients; meat, chicken, seafood, vegetables, etc., can be made. Stuffed mussels is a unique flavor and practical product obtained by stuffing with a mixture of rice and spices. This product, the style of manufacture and content of which may vary slightly depending on the manufacturer, has become identical to Istanbul, its birthplace, and has come from the Ottomans to the present without slowing down.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87151547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of gillnet twine thickness on catching efficiency and selectivity for common carp (Cyprinus carpio Linnaeus, 1758) fishery in Marmara Lake","authors":"H. Dereli̇, T. Kebapçıoğlu, Yusuf Şen, Zeki Serkan Ölçek, E. Dinçtürk, Aylin Ulman","doi":"10.12714/egejfas.39.2.01","DOIUrl":"https://doi.org/10.12714/egejfas.39.2.01","url":null,"abstract":"The effects of multifilament gillnet twine thickness on selectivity and catching efficiency for the common carp fishery were investigated in this study. Sampling was carried out with multifilament gillnets of two different twine thicknesses (with 210d/2 and 210d/3) on 140, 150, 160, 180, 200 mm mesh sizes between June 2015 and December 2016 in Marmara Lake, located in Western Turkey. Higher modal lengths and lower catch per unit effort (CPUE) values and lower sub-minimum landing size (MLS) individuals rate (excluding 180 and 200 mm mesh sizes) were obtained in the thick multifilament material (210d/3) with the same mesh size compared to thin material (210d/2). All mesh sizes in both twine thickness provided modal lengths above the MLS. However, the thin twine material had a higher nominal percentage of undersized fish (8%), greater than the 5% accepted limit for total catches when all mesh sizes are considered together. As a result, the modal lengths and spread values increased and the selectivity and catching efficiency decreased with the thicker twine material.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90450996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}