مقالههای دارای کلمهی کلیدی «Turkey»
اطلاعات انتشار: چهارمین کنگره بین المللی جغرافیدانان جهان اسلام، سال ۱۳۸۹
تعداد صفحات: ۱۴
In Turkey, Police Department is responsible for urban crimes and General Command of Gendarmerie for rural crimes. Urban criminal records, for which Directorate General of Security is responsible, are classified under two headlines, that is, crimes against property and crimes against life. Firstly –in this work– total criminal data were evaluated and dispersion analysis of crime rates for every 100.000 people was carried out by individual cities. Then, the rate of crimes against property for every 100.000 people was evaluated by individual cities. Classified under crimes against property, theft, seizure and other crimes were assessed separately and mapped by individual cities. Thus, regions in which crimes against property are concentrated were determined. It was determined that the rates of concentration have increased more in industrialized and urbanized regions. It was observed, on the maps showing the dispersion of crimes against property by individual cities, that the rates of crimes in Turkey have increased from the eastern side towards the western side and from the inner parts to the coasts. In recent years, especially, the criminal concentration at the Mediterranean Riviera is quite noticeable. The situation is the same in the cities of the Marmara Region, exposed to industrial activities and migration. The result is parallel to the direction of internal migration in Turkey. Assessed from this aspect, it is possible to state that the rates of crimes against property are rather high in the cities exposed to fast urbanization, population increase and over‐migration. However, these are rough estimates. For healthier results, particular and detailed studies are needed in the cities. It will help to decrease the criminal rates in Turkey to evaluate the results of the studies from the aspects of society, economy, psychology and space.<\div>
اطلاعات انتشار: پنجمین کنگره بین المللی جغرافیدانان اسلام، سال ۱۳۹۱
تعداد صفحات: ۶
Floods are one of the widespread natural disasters, and cause significant loss of life and property in the world and Turkey every year. The aim of the paper is to explain happening of floods in the Eastern part of the Black Sea Region, and to discuss preventive measures for floods from point of geographical view.The study area has mild Mediterranean climate which is temperate and humid. Mean annual temperatures change between 14 –15 0C near the shoreline. Mean annual precipitations are high, and especially of the eastern part of the study area exceeds 2000 mm at Rize (2333.2 mm). The slopes in the study area are very steep, and the main bedrock is usually composed of volcanic materials. The thicknesses of soils and debris materials aren’t much, and are usually moist. On the other hand, the settlement units are scattered on these slopes and their sewage water problems have tried to be solved with cesspools. So the soils around them are usually saturated with water. For that reason, heavy rains can cause flash floods. On the other hand, untouched areas rapidly decreased due to population growth in the coastal stripe in the last years. The buildings are generally built on slopes, and an important part of them have not sufficiently infrastructure. The solution of the problem is possible only multidisciplinary approach. For that reason it must be quickly made a regional plan, and everyone nicely act to this plan and the relevant laws.<\div>
اطلاعات انتشار: Geopolitics، سال ۱۳۸۷
تعداد صفحات: ۲۶
اطلاعات انتشار: رشد فناوري، سال ۱۳۸۷
تعداد صفحات: ۸
نویسنده(ها): Serkan Kekevi
اطلاعات انتشار: چهارمین همایش بین المللی تحولات جدید ایران و جهان، سال ۱۳۹۱
تعداد صفحات: ۷
The aim of this study, to provide why having strong relations between Turkey and Iran is not required by Western powers. It is obvious that, Turkey and Iran are two countries have state tradition. From a historical perspective, the fact is that the two neighboring countries’ destinies are closely bounded to each other. After Islamic Revolution, Iran has emerged as a point of the resistance to western hegemony in the Middle East region. Actually it has been a turn point about Turkish–Iranian relations. For many years Turkey was required to break off with Iran by Islamic fundamentalism rhetoric. Like that, Turkey was shown Iran’s un–religious, un–Muslim rival or Trojan horse in Islamic world to Iran by same powers. But raison d'état has been victorious. Turkish–Iranian relations have been grown up in all titles (economy, politics, tourism, foreign policy). That situation particularly gives rise to concern both United States and Israel. In this context Western policy makers are working to push Turkey and Iran different fronts. Especially, Muslim sectarian conflict is brought to fore in the Middle East region. The conflict is tried to introducelike Turkish–Iranian dispute. In Syria and Iraq were thought, this politics is useful apparatus for dividing the Muslim Middle east. The subject to be remembered Turkey and Iran never have had serious conflict in history.As a result, possibility of the hard rivalry and the consuming conflict of the largest two countries of the region will have been end of the real independent two states. This end will have been fatal wound in Muslim world from Africa to Asia–Pacific. Our study will be established under Turkish–Iranian relations assessment in Middleeasternpolitical system. And, it is the end with we will be tried to answer why deepening relations and friendship with Turkey and Iran have not been undesirable question. In this study we will profit from scientific articles and actual economic and foreign policy data.<\div>
۶Evaluating Turkish Retail companies e–commerce Within framework of the electronics city economic objectives Case study : Ankara
اطلاعات انتشار: اولین همایش ملی توسعه پایدار شهری، سال ۱۳۹۴
تعداد صفحات: ۱۹
In this research , we attempt to define e–commerce economic objectives in electronics city .First we introduced standard indicators of e–commerce then choose Ankara city to investigate.So with evaluation indices of E–Commerce prepared questionnaires and by field method choosen randomly 50 participating retailers And asked the companies to complete the questionnaire.After that with SPSS Software performed the necessary analysis and sat up Swot`s tables And extracted the necessary strategies for retail companies of Turkey.<\div>
اطلاعات انتشار: کنفرانس بین المللی اقتصاد مدیریت و علوم اجتماعی، سال ۱۳۹۴
تعداد صفحات: ۱۰
This study examine the political construction of scale as central to negotiations between states sharing freshwater resources. Indeed, we argue that such scalar negotiations and constructions of freshwater became central to the very consolidation of states in the region (specifically Israel and Turkey, given the case studies examined here). First providing a discussion on political construction and performativities of scale, we examine each of the two case studies in turn beforedrawing conclusions related to the importance of such scalar constructions for water issues and state building in the Middle East. This study discursively traces Turkey’s development into ahydro–hegemonic state in the Kurdish States River Basin. Recognizing conflict as a power–ladensocial system, it makes visible the construction, production and circulation of Israel’s power in the basin. It examines key narrative elements invoked by Israel to justify its evolvingasymmetric, hydro–hegemonic relations. Leveraging the hydro–political peace–buildingframework, itself constituted of equality, partnership, equity and shared sustainability, this study also examines the discursive practices of Turkey trans–boundary water and peace practitioners inrelationship with Palestinians. In so doing, it makes visible their hydro–hegemony, hydropoliticalpeace–building and hydro–hegemonic residues. This study’s conclusions re–affirm notably that environmental and hydro–political cooperation neither inherently nor necessarily constitute peace–building practice between Turkish Kurds, Iraqi Kurdistan and Republic of Turkey.<\div>
۸بررسی ویژگیهای فعالیت آتشفشانی ایوسن کوههای طارم در البرز باختری ایران و مقایسه آن با فعالیت آتشفشانی مشابه در ناحیه یونتداغ (Yuntdag) ترکیه
اطلاعات انتشار: علوم زمين، سال ۱۳۹۲
تعداد صفحات: ۱۰
ناحیه البرز باختری بخشی از رشتهکوههای البرز است که با ستبرایی بیش از 35 تا 40 کیلومتر در امتداد باختری کمربند آلپ– هیمالیا قرار دارد. این ناحیه طی حرکات کوهزایی آلپی به شکل کنونی در آمده و شکلگیری آن ناشی از برخورد بلوکهای ایران و عربی است. یک ردیف آتشفشانی ستبر با ستبرای تقریبی 3800 متر در البرز باختری با سن ایوسن رخنمون دارد و به نام سازند کرج معروف است که توسط تودههای نفوذی جوان ترشیری قطع شده است. شباهتهای بسیار زیادی از نظر زمینشناسی، سنگشناختی، چینهشناسی، ریختشناختی، ژیوشیمیایی و زمینساختی میان ردیف چینهای نواحی مشابه در سنگهای گدازهای میوسن ترکیه با ناحیه مورد مطالعه (ایوسن) در ایران وجود دارد و تنها تفاوت در زمان فعالیت آتشفشانی است.
نویسنده(ها): Nabiollah Ebrahimi
اطلاعات انتشار: Fall ۲۰۱۲ - No. ۱۱، سال ۰
تعداد صفحات: ۲۴
This writing tries to examine and analyze political and ideological stances adopted by Iran and Turkey towards the recent Arab revolutions in the Middle East and North Africa. In fact، the main question is to what extent the Arab revolutions have affected the level of cooperation and disputes between the two states. Certainly Turkey’s Neo–Ottoman policy as new Turkish foreign policy discourse has deeply influenced Ankara–Tehran relations، after the Islamists came to power. That is to say that Turkey’s new foreign policy and its exceptional horizons in the Justice and Development Party’s Islamist strategy have posed new challenges to Iran’s increasing diplomatic activities in the Middle East. From this perspective، This paper argues that Turkey’s Neo–Ottoman discourse towards the recent Arab revolutions in the region has caused tensions between the two countries in the new politico–security settings of the Middle East.
اطلاعات انتشار: بهار- شماره ۱۹، سال ۱۳۹۲
تعداد صفحات: ۲۴
Iran and Turkey are the two important countries in the region that despite their resemblance in identity، history and geopolitics، however through ought their past history have not been able to develop a quasi relationship. After the Islamic Revolution in Iran، the rise of an Islamic state in Turkey caused the expectations that the relations between the two sides despite their traditional conflict and competition، will lead to a greater cooperation between these two countries.. But relations between two sides in the last 10 years shows that although in the field of trade and economic relations have reached highest level، but in other field such as political and security، competition between the two countries Increased to an unusual tensions and sometimes confrontation conflict. This article after a brief looks at the effective fundamental factors to divergence between these two countries and finds the grounds for a better bilateral relationship and cooperation
اطلاعات انتشار: بهار و تابستان ،دوم - شماره ۴، سال ۱۳۹۳
تعداد صفحات: ۲۷
Security has been the most important issue in relations between Turkey and the European Union. Turkish leaders have always tried to link their own security concerns with those of the Union، trying to portray their country as net security provider to the EU. The European Union in its new security strategy has tried to expand its security zone outside the EU، defining issues such as terrorism، weapons of mass destruction، regional conflicts، energy security and identity security as new threats. In order to meet such threats، Turkey has been considered as an important actor. In the beginning، the relationship was limited to military partnership، but in recent years، the European Union has tried to exploit Turkey’s nonmilitary capabilities as well. The question that the persent paper wants to examine is: what are Turkey’s security capabilities to achieve permanent membership in the European Union? To answer this question، the authors examine the security concerns of the European Union، especially after the Cold War and September the 11th، as well as Turkey’s capabilities in response to such concerns.
اطلاعات انتشار: World Applied Sciences Journal، بيست و يكم،شماره۴، ۲۰۱۳، سال ۰
تعداد صفحات: ۱۶
In this study, job expectations of X and Y generation teachers were tried to explained. This study is done by using “mixed search” model in which quantitative and qualitative techniques are used together. In this study, 218 participants took place and researchers applied “Job Expectation Scale” to these participants. Besides this, the questions of semi–structured “Expectation from the Job Interview Form” were asked. To analyze data, percentage and frequency tables were used for personal data of the participants and arithmetic average and standard deviation were calculated to determine the job expectation level of X and Y generation participants. To indicate the meaningful difference between X and Y generation, t–test was applied. The qualitative data collected by semi–structured interview form was analyzed by using context analyzing method. As a result of the findings, existence management structure in educational institutes is not suitable or appropriate for the expectation of Y generation.
اطلاعات انتشار: World Applied Sciences Journal، بيست و پنجم،شماره۷، ۲۰۱۳، سال ۰
تعداد صفحات: ۹
Sport areas at schools are essential parts of any school buildings because of its important role in the overall teaching process. In this study, it was attempted to determine he efficacy of the sport areas in primary and secondary schools in the city of Erzurum and whether or not the floor characteristics of these sport areas are suitable for sports in addition to the participation levels of the students to sport activities, their sport branch preferences and deficiencies in sport areas they detected. As a consequence of the study, it was found that total surface area belonging to the schools is 502,374m2, 132.162m2 which is indoor area, 358,792m2 is outdoor area, 111,420m2 green area. Mean education are per student is 7,35m2 and sport area is 2m2. From the questionnaire, it was determined that 86.8% of 683 students perform a sport activity. The most preferred sport activity was found to be football. From the outcomes of the evaluation, it was found that sport areas in the schools are considerably inefficient. Student desire a indoor sport hall in their schools the most. Sport activity status of the students are significantly associated with age (x2=11.555, p=0. 009, p 0.01), gender (x2=50.528 p=0.000 p0.01) and grade status (x2=23.262, p=0.016, p0.05).
اطلاعات انتشار: International Journal Of Environmental Research، سوم،شماره۱، Winter ۲۰۰۹، سال ۰
تعداد صفحات: ۱۲
This study evaluates the influence of Yanýklar Creek on the water quality of Fethiye Gulf. Accordingly, this study demonstrates (i) change in the water quality of Fethiye Gulf from 2006 to 2007; (ii) the water quality classification of the Yanýklar Creek feeding Fethiye Gulf; and (iii) how land–based fish farm influences Yanýklar Creek water quality in a Fethiye–Göcek Specially Protected Area. In this study, the high contribution of nitrite–nitrogen, total phosphate and number of total and fecal coliform of Yanýklar Creek is verified to be due to land–based fish farm located on the creek. Since, ammonium nitrogen, nitrate nitrogen, nitrite nitrogen and total phosphate concentrations and, number of total and fecal coliform were elevated and dissolved oxygen levels dropped at downstream of the fish farm. Water transparency increased except in July and August. Number of total coliform increased except in October and November. The number of total coliform in the gulf also dramatically exceeded the acceptable limit of 1000 CFU\100mL, thereby implicating wastewater inputs to the gulf as the probable source. Overall data suggest that external phosphorus and nitrogen loads to Fethiye Gulf derive mainly from tributary streams impacted by point sources, and landbased trout fish farm.
۱۵Views of Hair Goat Breeders Concerning the Relationship between Nomadic Livestock and Forestry: An Example from the Turkey
اطلاعات انتشار: International Journal Of Environmental Research، نهم،شماره۳، Summer ۲۰۱۵، سال ۰
تعداد صفحات: ۸
The obstacles towards this pursuit not only negatively affect the views and perceptions of the forest villagers about forest resources but also, from time to time, causes Turkey, which has the appropriate environment in terms of livestock, to become one of the countries that import meat. In this study, the perception and views of hair goat breeders about forestry & livestock breeding relations and how to develop these two sectors are investigated. Within the framework of this study, a survey including 121 hair goat breeders was conducted. According to the result of the study, it is found that; (1) Hair goat breeding has undergone a regression when compared with the past. Low output prices of meat and milk, contrary to high prices of feed and other input cost and negative forestry & livestock breeding relations, are the most important reasons of this regression. (2) The highest expectation of the respondents from the forests is related to livestock breeding. Thus, limitations towards goat grazing in the forests negatively affect local views and perceptions of forests.
۱۶مشخصات آناتومیکی برگ تعدادی از گونه های نادر و انحصاری جنس زنبق Iris از زیر جنس Hermodactyloides در ترکیه
اطلاعات انتشار: مجله گياه شناسي ايران، بيست و يكم،شماره۲، ، سال ۱۳۹۴
تعداد صفحات: ۱۰
مشخصات آناتومیکی برگ هشت آرایه از جنس زنبق مقایسه و ارتباط بین آنها تعیین گردید. گونه های Iris danfordiae، Iris celikii، Iris histrioides، Iris pamphylica and Iris histrio ssp. aintabensis انحصاری ترکیه و گونه های Iris bakeriana، I. celikii، I. histrioides، I. pamphylica، I. histrio ssp. aintabensis and Iris histrio ssp. Histrio دارای پراکندگی محدودی در ترکیه هستند. تفاوت هایی در صفات آناتومیکی گونه ها به خصوص در لایه مزوفیل برگ مشاهده گردید که بر اساس آنها Iris reticulata ، Iris histrioides می بایستی به عنوان گونه های مستقل محسوب شوند. زیر گونه های histrio و aintabensis می بایستی به عنوان هم نام گونه I. histrio در نظر گرفته شوند. گونه های I. danfordiae و I. celikii گونه هایی مستقل باخویشاوندی نزدیک هستند و I. pamphylica و I. bakeriana گونه های متفاوت این زیر جنس هستند.
۱۷بررسی و مقایسه آتشفشان های میوسن– کواترنری در شمال باختر ایران، قفقاز کوچک و جنوب خاور آناتولی: ژیوشیمی، خاستگاه و جایگاه زمینساختی
اطلاعات انتشار: علوم زمين، سال ۱۳۹۳
تعداد صفحات: ۱۲
در این نوشتار آتشفشان های سهند، آرارات، نمروت، سوفان، تندورک و قفقاز کوچک با سن میوسن پایانی– کواترنری در منطقه برخورد صفحات قارهای عربی– اوراسی مورد مطالعه قرار گرفتهاند. این آتشفشان ها در چند مرحله مواد آذرآواری و جریانهای گدازهای با ترکیب بازالتی تا ریولیتی را فوران کرده اند. این سنگ های آتشفشانی ماهیت کالکآلکالن (سهند) تا آلکالن (تندورک) دارند. تهی شدگی از عناصر Nb، Ta، Ti، Y و غنیشدگی عناصر Rb، Ba، K، Sr، Th در نمودارهای چندعنصری بهنجارشده با ترکیب گوشته اولیه از ویژگیهای ژیوشیمیایی معمول در این سنگهای آتشفشانی است. همچنین غنیشدگی از LREE نسبت به HREE در نمودارهای الگوی پراکندگی عناصر خاکی کمیاب بهنجارشده با کندریت همه سنگهای آتشفشانی منطقه نمایان است. غنی شدگی سنگهای آتشفشانی سهند و قفقاز کوچک از LREE و تهیشدگی بیشتر آنها از HREE (نسبت به دیگر سنگهای آتشفشانی مورد مطالعه)، نشانگر تشکیل ماگمای مادر آنها از ذوب بخشی سنگهای گارنت لرزولیتی گوشته است. بر خلاف آنها، سنگهای آتشفشانی خاور آناتولی از ذوب بخشی سنگهای گوشتهای با ترکیب اسپینل لرزولیت ایجاد شده اند. وجود بیهنجاری منفی عناصر Nb و Ta در نمودارهای چندعنصری بهنجارشده با گوشته اولیه، نشانگر وجود مولفه ژیوشیمیایی مربوط به محیط فرورانش پیش از برخورد در ماگمای مادر سنگهای آتشفشانی مورد مطالعه است. مقادیر بالای عناصر La، Th، Ce و Rb در سنگ های آتشفشانی مورد مطالعه نشانگر آلودگی پوسته ای است که در اثر جایگیری ماگماهای یادشده در پوسته و رخداد فرایندهای همزمان هضم، تبلوربخشی و آلایش با مواد پوستهای ایجاد شده اند.
اطلاعات انتشار: پژوهش نامه ايراني سياست بين الملل، سال ۱۳۹۳
تعداد صفحات: ۲۷
امنیت از مهمترین موضوعات در روابط ترکیه و اتحادیه اروپا بوده است. رهبران ترکیه همواره سعی در پیوند زدن نگرانی های امنیتی خود با اتحادیه اروپا داشته و تلاش کرده اند خود را به عنوان کنشگر تامین کننده امنیت این اتحادیه معرفی کنند. اتحادیه اروپا نیز در راهبرد امنیتی جدید خود، سعی در گسترش حوزه امنیتی در خارج از مرزهای اتحادیه داشته و پدیده هایی مانند تروریسم، سلاح های کشتار جمعی، منازعات قومی، امنیت انرژی و امنیت هویتی را به عنوان چالشهای امنیتی خود تعریف کرده و برای رفع این تهدیدها، ترکیه به عنوان کنشگری مهم در نظر گرفته شده است. در آغاز، این روابط تنها محدود به حوزه قدرت نظامی بود و توانایی–های ترکیه در این بخش بررسی می شد. اما در سال های اخیر اتحادیه اروپا بیشتر سعی در استفاده از توانمندی های غیرنظامی ترکیه داشته است. بر این اساس، پرسشی که مقاله حاضر مطرح می کند این است که ترکیه برای دستیابی به عضویت دایم در اتحادیه اروپا از چه توانمندی های امنیتی برخوردار است؟ در پاسخ به این پرسش، نویسندگان مقاله با پرداختن به نگرانی های امنیتی اتحادیه اروپا به ویژه پس از جنگ سرد و تحولات بعد از یازده سپتامبر، قابلیت ها و توانایی های ترکیه در پاسخ به این نگرانی ها را تبیین میکنند.
۱۹Age, growth, sex ratio and diet of eastern mosquitofish Gambusia holbrooki Girard, 1859 in Seyhan Dam Lake (Adana\Turkey)
نویسنده(ها): S. A. Erguden
اطلاعات انتشار: IRANIAN JOURNAL OF FISHERIES SCIENCES، دوازدهم،شماره۱، Jan ۲۰۱۳، سال ۰
تعداد صفحات: ۱۵
The aim of this study is to provide necessary information on the biology of mosquitofish in Seyhan Dam Lake in Adana, which is located in southern part of Turkey. The population structure of eastern mosquitofish Gambusia holbrooki Girard, 1859 was studied in Seyhan Dam Lake. A total of 1582 specimens (772 males and 810 females) were collected monthly from January to December, 2007. The age composition of the sample range between 0+ and 2+in both sexes. The sex ratio was M:F= 1:1.04. The length–weight relationship calculated for all individuals, with W=0.0129 x L2.927. von Bertalanffy growth parameters were for males, L∞=3.31cm, K=0.6597 year–1, to =0.9483 year; for females L∞=6.62cm, K=0.2369 year–1, to =0.9259 year; for all samples, L∞=5.84cm, K=0.2369 year–1, to =–1.0740 year. A total of 102 stomachs were examined and total of organisms identified from alimentary canal. The diet mainly consist of Diptera (Chironomidae (pupa) 29.40%; Diptera (adult) 24.50%), Egg (mosquito 14.70%; different organisms 1.96%), Crustacea (Copepoda 9.80%, Cladocera 3.92%), Coleoptera 4.90%, Hemiptera 1.96%, Fishes (G. holbrooki 3.92%), Other Hymenoptera 1.96%, Tricoptera 0.98%, Plecoptera 0.98%, Formicidae 0.98%. These data were conducted to compare with the results of other studies to carry out for other geographic areas.
۲۰The impact assessment of cage aquaculture on benthic communities along the south eastern Black Sea
نویسنده(ها): N.S. Bascinar *، A. M. Gozler، C. &Ş، ، ahin، &Ç، ، . Eruz، L. Tolun، E. Agirbas، M. Mantikci، S. Serdar، B. Verep
اطلاعات انتشار: IRANIAN JOURNAL OF FISHERIES SCIENCES، سيزدهم،شماره۳، Jul ۲۰۱۴، سال ۰
تعداد صفحات: ۲۰
The present study was conducted to examine the impact of cage aquaculture on benthic communities in coastal areas (depth 25 to 50 m) from fish farming operations located along the southeastern Black Sea (Ordu–Perşembe, Trabzon–Yomra and Rize central). Sampling was conducted seasonally from April 2007 to 2009. Sediment samples were taken using Ekman Grab (box core– 0.04 m2). Temperature, salinity, and water velocity were periodically measured to determine influencing sedimentary organic matter in the sediment, oxygenation, and anoxic conditions. In addition, grain size of sediment, organic carbon content, and distribution of benthic communities were investigated. In order to determine benthic impact of fish farms on the region, Shannon – Wiener diversity index (H’), AMBI (AZTI Marine Biotic Index) and M–AMBI (Multivariate– Marine Biotic Index) indices were used. Results of current study showed that benthic zone ecological quality of stations with number 01, 02, 03, and 04 at Ordu–Perşembefish–farming habitat was found to be very low. In autumn 2008, there were 3 species which belonged to Capitella capitata (844 individuals\m2), Capitella sp. (133 individuals\m2), and Heteromastus filliformis (311 individuals\m2) at OP–01 station. In addition, the impact of Trabzon–Yomra fish–farming activity on benthic communities was low. The degree of exposure for Rize fish–farming area in all seasons was quite low, which was not a significant negative impact.
۲۱Presence of Hysterothylacium gadi aduncum (Rudolphi, 1802) (Anisakidae) in cultured Rainbow trout (Oncorhynchus mykiss Walbaum, 1792) in fresh water farms from Turkey and its mortality
اطلاعات انتشار: IRANIAN JOURNAL OF FISHERIES SCIENCES، چهاردهم،شماره۱، Jan ۲۰۱۵، سال ۰
تعداد صفحات: ۸
The presence of the anisakid nematode Hysterothylacium gadi aduncum (Rudolphi, 1802) is reported for the first time in cultured rainbow trout (Oncorhynchus mykiss Walbaum, 1792) as a new host in freshwater farms from Turkey. This marine parasitic nematode is thought to complete the life cycle in fresh water and rainbow trout could act as the definitive host for this parasite under fresh water culture conditions. Mortalities in the rainbow trout infected with H. gadi aduncum (Rudolphi, 1802), were seen after three to four months period of feeding program with marine fish offal (Sprattus sprattus, Engraulis encrasicolus) and pellet fish food. In the present study, the main cause of mortalities was detected as stomach obstruction formed by aggregation of the adult nematodes which developed from infective third stage larvae. Original measurements and figures are presented.
اطلاعات انتشار: Caspian Journal of Environmental Sciences، سيزدهم،شماره۱، ۲۰۱۵، سال ۰
تعداد صفحات: ۱۰
The concentrations of some heavy metals in sediment from the Sinop coasts of the Black Sea were measured to monitor metal pollution in 2013. The distribution of the heavy metals in sediments of the Black Sea shows a variable pattern. The objectives of the present study were to elucidate the distribution heavy metals such as Cu, Pb, Zn, Ni, Mn, Fe, As, Cd, Cr, Hg and Co in sediment from Sinop coast of the Black Sea. The quality of sediment in the Black Sea, pollution levels of metal were evaluated using the enrichment factor technique (EF). The lowest EF values were between 0–5 in Cu, Fe, Zn, Ni, Cd, Pb, Mn and Co. These values did not have statistically significant differences. As, Cr and Hg concentrations were estimated relatively higher enrichment values than other metals. The results indicated that contamination of surface sediments in Sinop Coast is dominated As (10.2–7.4 mg.kg–1), Cr (67–374 mg.kg–1) and Hg (0.07–0.03 mg.kg–1) and to a lesser extent Cu (7.24–5.09 mg.kg–1), Fe (1.76–1.12%), Zn (19.3–13.8 mg.kg–1), Ni (16.2–12.5 mg.kg–1), Cd (0.06–0.04 mg.kg–1), Pb (7.12–6.32 mg.kg–1), Mn (470–227 mg.kg–1), Co (9.5–5.9 mg.kg–1). Also, the requirement of age determination is of great importance to assess the extent of the anthropogenic contribution to pollution.
۲۳Short Communication: Serranus cabrilla (Linnaeus, 1758) (Perciformes, Serranidae ) a new host record for Nerocila orbigyni (Guérin–Mèneville, 1832) (Isopoda, Cymothoidae)
اطلاعات انتشار: IRANIAN JOURNAL OF FISHERIES SCIENCES، چهاردهم،شماره۴، Oct ۲۰۱۵، سال ۰
تعداد صفحات: ۶
اطلاعات انتشار: IRANIAN JOURNAL OF FISHERIES SCIENCES، پانزدهم،شماره۱، Jan ۲۰۱۶، سال ۰
تعداد صفحات: ۱۵
The zooplankton community structure in Eğirdir Lake (Isparta–Turkey) was studied monthly throughout an annual cycle (January 2010–December 2010). The zooplankton community was represented by three main groups: Rotifera, Cladocera and Copepoda, respectively comprised 89.62%, 7.78% and 2.60% of the total zooplankton abundance. Eğirdir Lake was dominated by the rotifera Polyarthra dolichoptera in September and October, that succeeded by cladocera Bosmina longirostris species during December. Canonical correspondance analysis (CCA) was used to relate species distribution to environmental factors. The variation in the species data was significantly (p 0.05) related to a set of environmental variables (conductivity, carbonate, pH, ammonium, organic substances, dissolved oxygen, saturation of dissolved oxygen, chloride and temperature). According to the CCA result, variables were able to explain 81.9% of the total variation suggesting a significant result. The rotifer, Asplanchna priodonta, and the crustaceans, B. longirostris and Nauplius larvae seemed to be affected by environmental gradients.
اطلاعات انتشار: IRANIAN JOURNAL OF FISHERIES SCIENCES، پانزدهم،شماره۲، Apr ۲۰۱۶، سال ۰
تعداد صفحات: ۱۲
The present study was conducted based on the fish species and physicochemical parameters of Eğirdir Lake. Sampling was carried out monthly from January through December 2010 between 9 am and 11 am. The parameters measured were water temperature, depth, secchi disk depth, turbidity, dissolved oxygen, saturation of dissolved oxygen, pH, conductivity, chloride, hardness, calcium, magnesium, bicarbonate, carbonate, nitrate, nitrite, ammonium, sulphate, phosphate, silica, organic substance, acid power (SBV) and chlorophyll–a. Monthly sampling was performed at four stations at different depths. Water temperature ranged from 6.9±0.5 °C in February to 26.8±0.4 °C in August. Minimum secchi disk depth recorded was 0.5 m while the maximum was 2.4 m. Dissolved oxygen ranged from 4.2±0.2 to 12.6±0.6 mgL–1. The pH values ranged from 8.4 to 9.6. In this study, 15 fish species, belonging to eight families were identified. Among the 15 fish species recorded, Cyprinidae was the dominant family followed by Percidae (3 %). According to detrended correspondence analysis (DCA), variables were able to explain 90 % of total variation suggesting a significant result. The results showed that water temperature, dissolved oxygen and saturation of dissolved oxygen were the most important physicochemical parameters affecting fish distribution. Other pyhsicochemical parameters of this lake did not show any significant statistical differences in determining fish distribution.