Sürdürülebilir Kalkınma Amaçları

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• MakaleAçık Erişim2025Scopus SJRQ4/r/munzur/2235
  Comparison between traditional models and artificial neural networks as estimators of the growth of the Tigris scraper Capoeta umbla (Teleostei: Cyprinidae) in the Munzur River, Turkey; [Comparación entre modelos tradicionales y redes neuronales artificiales como estimadores del crecimiento del raspador del Tigris Capoeta umbla (Teleostei: Cyprinidae) en el río Munzur, Turquía]

  Ozcan, Ebru Ifakat; Serdar, Osman

  In this study, a comparison of traditional growth methods (lengthweight relationships and von Bertalanffy growth function) with artificial neural networks in growth models was carried out in the growth of 783 specimens of Capoeta umbla from the Munzur River, Turkey from September 2019 to May 2021. The lengthweight relationships of C. umbla W = 0.0085L3.013 R2=0.943 was determined for all individuals. The ages of the specimens were from 0 to 11 years old. The von Bertalanffy growth function was Lt = 46.15 [1-e-0.139 (t + 2.57)] and Wt = 856.32 [1-e-0.139 (t + 2.57)]3.013 for all individuals. Ф’ value was 2.471 all individuals. The training stopped and the best validation performance was fixed at 8.1473 × 10-5 at epoch 42. The validation checks were reached as 6, at epoch 48 and the gradient = 5.6566 × 10-5, at epoch 48. The target output R value was 0.98584 for training, 0.98969 for validation, 0.98757 for testing and 0.9868 for all. The calculated MAPE values were 0.140 and 0.578 for artificial neural networks, 1.168 and 2.726 for length–weight relationships, 5.721 and 4.013 for von Bertalanffy growth function, respectively. The calculated SSE values for length and weight were 0.0128 and 30.864 for artificial neural networks, 1.3985 and 350.786 for length–weight relationships. The results of the present show that artificial neural networks can be superior estimators than length–weight relationships and von Bertalanffy growth function. Therefore, artificial neural networks models are an effective tool to describe body weight and length in fish.

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• MakaleAçık Erişim2025Scopus SJRQ4/r/munzur/2208
  The effect of the pesticide Klaxon on the oxidative stress and the antioxidant responses of the Zebra mussel (Dreissena polymorpha); [El efecto del pesticida Klaxon sobre el estrés oxidativo y las respuestas antioxidantes del mejillón cebra (Dreissena polymorpha)]

  Ozcan, Ebru Ifakat

  Klaxon pesticide represents a novel generation of insecticide employed in the control of diseases, pests and weeds in select agricultural regions. Pesticides that enter the aquatic environment indirectly have a detrimental impact on the organisms that inhabit this environment, and humans are ultimately exposed to these chemicals through the food chain. The present study investigated the toxicity of the klaxon pesticide in Dreissena polymorpha, a suitable bioindicator of water pollution, through the analysis of oxidative stress and metabolic biomarkers. The effects of klaxon at concentrations of 0.01, 0.15 and 0.30 mg·L-1 on oxidative stress and antioxidant changes in D. polymorpha were determined over a 24 – and 96–hour period. Enzyme–linked immunosorbent assay (ELISA) kits were employed to quantify the activities of superoxide dismutase (SOD), glutathione peroxidase (GPx), catalase (CAT) and thiobarbituric acid (TBARS), as well as to assess the levels of reduced glutathione (GSH). ELISA kits were used to determine results. Statistical evaluation of biomarker analyzes was performed using the SPSS 24.0 package program one–way ANOVA (Duncan 0.05) test. Significant decreases in GSH levels (P<0.05); significant increases in TBARS levels (P<0.05) were observed. Significant decreases (P<0.05) in SOD, CAT and GPx activities were observed. Considering the study data, it was determined that the klaxon pesticide penetrating the body of the living organism caused oxidative stress and changes in enzyme activities in D. polymorpha.

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  AtıfScopus1·WoS1

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• MakaleAçık Erişim2024Scopus SJRQ3/r/munzur/1880
  VARIATION OF ZOOPLANKTON IN THE HALBORI SPRINGS (TUNCELI, TURKEY)

  Bulut, H.; Ozcan, E.I.; Kilmaç, C.

  This study examined certain water quality parameters and zooplankton fauna at two stations in Halbori Springs (Tunceli, Turkey), over a 12-month period from June 2022 to May 2023. The highest water temperature of 15.4°C was recorded at Station 2 in August, while the lowest water temperature of 5.0°C was recorded at Station 2 in January. The pH value of Halbori Springs ranged from 6.4 to 8.5. Dissolved oxygen varied between 8.1 and 11.9 mg/L during the study period. A total of 26 zooplankton species were identified in Halbori Springs. Nineteen of these species belong to Rotifera, five Cladocera and two Copepoda. According to the index analysis results of Station 1, the month with the highest species richness index, as measured by the Shannon Wiener H′ index, was October with a value of 1.97, while the lowest value was 0.45 in January. The highest value for the Margalef species diversity D index was 0.78 in October, and the lowest was 0.12 in January. According to the index analysis results of the station 2, the month with the highest species richness index, Shannon Wiener H’, was September with a value of 1.68, while the lowest value was observed in January with 0.67. As for the Margalef species diversity index D, the highest value was recorded in September with 0.64, and the lowest value was observed in January with 0.12. In Halbori Springs, 1 species of Brachionus and 2 species of Trichocerca were found. The QB/T ratio was calculated to be 0.5, suggesting that the study area has oligotrophic characteristics.

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  AtıfScopus1·WoS1

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• MakaleAçık Erişim2024Scopus SJRQ3/r/munzur/1581
  Performance of artificial neural networks and traditional methods in determining selected growth parameters of Alburnus sellal Heckel, 1843

  Ozcan, Ebru Ifakat

  In this study, predictions were made on the growth performance of Alburnus sellal Heckel, 1843 from the Munzur River using back propagation artificial neural networks and ANN algorithms. Statistical growth models used in fish biology and results obtained from artificial neural networks were compared. A total of 239 samples were used in this comparison. It was determined that the population is distributed across age groups 0–VII. The relationship between length and weight was calculated as W = 0.0046L3.198 for all individuals. The von Bertalanffy growth parameters were calculated for all individuals: Lt = 21.93 [1 – e–0.158 (t + 2.11)]; Wt = 102.29 [1 – e–0.158 (t + 2.11)]3.198. The growth performance index (Ф’) value was 1.880 for all individuals. The condition factor varied between 0.479 and 1.115 for females and between 0.533 and 1.076 for males. The Mean Absolute Percent Error (MAPE) statistic was used, which is a widely used method to measure the accuracy of the predictions made. It was determined that ANNs MAPE (%) values were better than MAPE values calculated for the length–weight relationship and von Bertalanffy growth function models for A. sellal. This study shows that ANNs can be used as an alternative useful method for predicting population parameters. ANN models are therefore an effective tool to describe fish growth parameters. They have been found to be a useful predictive tool. The developed models can be used to predict future sustainable fish management.

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  AtıfScopus2·WoS3·OpenAlex1

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• MakaleAçık Erişim2023/r/munzur/6430
  Karakaya Baraj Gölü’nde Yaşayan Arabibarbus grypus (Heckel, 1843) (Şabut) Populasyonunun Bazı Büyüme Özelliklerinin Belirlenmesi

  Ozcan, Ebru Ifakat; Şeker, Engin; Cengiz, Burhan

  Bu çalışmada; Karakaya Baraj Gölü’ndeki Arabibarbus grypus’un (Heckel, 1843) eşey dağılımı, boy ve ağırlık ilişkisi, yaş tayini, von Bertalanffy büyüme parametreleri ve kondisyon faktörü gibi bazı büyüme özellikleri araştırılmıştır. İncelenen 74 bireyin %37,84’ünün (28 adet) dişi, %62,16’sının (46 adet) erkek olduğu ve dişi/erkek oranının 1/0,6087 olduğu tespit edilmiştir. Örneklerin total boy ve ağırlıkları dişilerde 32,0-62,2 cm ve 354,0-3046 g; erkeklerde 25,0-63,0 cm ve 200,0-3350 g arasında değişmektedir. İncelenen örneklerin yaş grupları II ile VI arasında değişmektedir. Boy-ağırlık ilişkisi dişilerde W = 0,0067L3,079, erkeklerde W = 0,011L2,962 ve tüm bireylerde W = 0,0096L2,993 olarak hesaplanmıştır. Karakaya Baraj Gölü’ndeki A. grypus’un izometrik bir büyüme gösterdiği saptanmıştır (p>0,05). von Bertalanffy büyüme parametreleri dişiler için Lt = 76,53 [1 – e–0,348 (t + 1,22)], erkekler için Lt = 89,83 [1 – e–0,212 (t + 2,08)] ve tüm bireyler için Lt = 92,40 [1 – e–0,200 (t + 2,21)] olarak tahmin edilmiştir. Büyüme performans endeksi (Ф') değeri dişi, erkek ve tüm bireyler için sırasıyla 3,309; 3,233 ve 3,232 olarak hesaplanmıştır. Kondisyon faktörü dişi bireylerde 0,707-1,120 ve erkek bireylerde ise 0,702-1,356 arasında değişmektedir.

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  AtıfOpenAlex2·TR Dizin2

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• MakaleAçık Erişim2023/r/munzur/6400
  Length-Weight, Length-Length Relationships and Condition Factor of Squalius cephalus (Linnaeus, 1758) in the Munzur River

  Serdar, Osman; Ozcan, Ebru Ifakat

  In this study; some features were investigated such as length-weight, length-length relationships and condition factor of Squalius cephalus (Linnaeus, 1758) were collected between 2019-2021 from Munzur River. 49 were female and 59 were male; female/male ratio was found to be 1/1.20. Total length and weight ranged between 8.2-24.1 cm and 6.8-148.6 g for female; 8.9-24.3 cm and 7.3-156.8 g for male. The length-weight relationship of S. cephalus was found W = 0.0079L3,1229 (R² = 0.965) in females, W = 0.0074L3.1536 (R² = 0.971) in males and W= 0.0076L3.1407 (R² = 0.969) in all individuals. It was determined that the b value was not statistically different from 3 in female, male and all individuals (t-test; p>0.05). The growth of the S. cephalus was determined to be isometric (b=3) in the Munzur River. The relationship between total, fork and standard lengths was determined for female, male and all individuals were quite strong (P<0.001; R2>0.927). Condition factor of S. cephalus varies between 0.827-1.438 in females and 0.826-1.517 in males from Munzur River.

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• MakaleAçık Erişim2022/r/munzur/6525
  Pülümür Nehri (Tunceli)’ndeki Salmo trutta macrostigma (Dumeril, 1858), Cyprinion macrostomum Heckel, 1843 ve Oxynoemacheilus tigris (Heckel, 1843)’in Boy-Ağırlık İlişkileri

  Serdar, Osman; Ozcan, Ebru Ifakat

  Bu çalışmada; 2017 ve 2019 tarihleri arasında Pülümür Nehri'ndeki Salmo trutta macrostigma (Dumeril, 1858), Cyprinion macrostomum Heckel, 1843 ve Oxynoemacheilus tigris (Heckel, 1843)’in boy-ağırlık ilişkileri araştırılmıştır. Total boy ve ağırlıklar S. t. macrostigma için 14,4-36,3 cm ve 45,2-602 g, C. macrostomum için 7,8-14,0 cm ve 4,9-30,0 g, O. tigris için 4,3-8,6 cm ve 0,7-5,1 g arasında değişim göstermiştir. İncelenen türlerin boy-ağırlık ilişkisi; S. t. macrostigma için W = 0,0093TL3,0655 (R² = 0,9390), C. macrostomum için W = 0,0073TL3,1613 (R² = 0,9008) ve O. tigris için W = 0,0068TL3,1053 (R² = 0,9729) olarak bulunmuştur. S. t. macrostigma ve O. tigris’in b değerlerinin istatistiki olarak 3’ten farklı olmadığı tespit edilmiş (t-testi, p>0,05) ve Pülümür Nehri’ndeki bu 2 türün büyümesinin izometrik olduğu belirlenmiştir. C. macrostomum’un b değerinin istatistiki olarak 3’ten farklı olduğu tespit edilmiş (t-testi, p

  AtıfOpenAlex2

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• MakaleAçık Erişim2022/r/munzur/6489
  Current Status of Aquarium Fish (Ornamental Fish) Enterprises During the \rPandemic Period (Elazig City Sample)

  Ozcan, Ebru Ifakat; Bulut, Hilal

  This study was carried out in order to reveal the situation of aquarium sales enterprises in Elazig and \rto determine their problems. In the study, a total of 14 enterprises (aquarist) were asked questions by \rthe survey method. It has been determined that a significant part of the existing enterprises is located \rin the center of Elazig (93%), all of them continue to operate as tenants and their operating periods \rare over 5 years. It has been noted that 86% of the personnel working in the enterprises are male and \r14% are female. It was determined that the most sold fish species in the research area were 2 fish \rspecies belonging to 2 families. It has been observed that one of the important problems in aquarium \rbusinesses is fish diseases. It has been determined that 93% of the fish sales of the Covid-19 pandemic \rperiod were negatively affected and 7% were positively affected.\r

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  AtıfOpenAlex3·TR Dizin3

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• MakaleAçık Erişim2022/r/munzur/5840
  Pülümür Nehri (Tunceli)’ndeki Noktalı İnci Balığı Alburnoides bipunctatus (Bloch, 1782)’un Boy-Ağırlık İlişkileri ve Kondisyon Faktörü

  Serdar, Osman; Ozcan, Ebru Ifakat

  Bu çalışmada; 2017 ve 2019 tarihleri arasında Pülümür Nehri'nden yakalanan noktalı inci balığı Alburnoides bipunctatus (Bloch, 1782)’un boy-ağırlık ilişkisi ve kondisyon faktörü araştırılmıştır. Örneklerin total boy uzunlukları ve ağırlıkları dişilerde 7,1-11,6 cm ve 2,9-12,3 g; erkeklerde 7,0-11,9 cm ve 2,7-13,5 g arasında değişmiştir. Dişi/erkek oranı 1/0,87 olarak hesaplanmıştır. Boy-ağırlık ilişkileri dişilerde W=0,0111TL2,90 (R2=0,80); erkeklerde W=0,0155TL2,76 (R2=0,83); tüm bireylerde W=0,0136TL2,81 (R2=0,82) olarak belirlenmiştir. Pülümür Nehri’ndeki A. bipunctatus’un negatif allometrik bir büyüme gösterdiği tespit edilmiştir. Boy-ağırlık ilişkisinin dişi, erkek ve tüm bireyler için kuvvetli ve anlamlı olduğu gözlenmiştir (R2=0,82, p<0,001). Kondisyon faktörü değerinin dişilerde 0,670-1,175, erkeklerde 0,632- 1,313 ve tüm bireylerde ise 0,632-1,313 arasında dağılım gösterdiği saptanmıştır.

  İncele
• MakaleAçık Erişim2021/r/munzur/6604
  Pülümür Nehri (Tunceli)’ndeki Alburnus mossulensis (Mossul bleak) Heckel, 1843 ‘ün Boy-Ağırlık İlişkisi ve Kondisyon Faktörü

  Serdar, Osman; Ozcan, Ebru Ifakat

  Bu çalışmada; 2017 ve 2019 tarihleri arasında Pülümür Nehri'nden yakalanan Alburnus mossulensis’in Heckel, 1843 cinsiyet dağılımı, boy-ağırlık ilişkisi ve kondisyon faktörü araştırılmıştır. İncelenen bireylerin % 58,80’inin (304 adet) dişi, % 41,20’sinin (213 adet) erkek olduğu ve dişi/erkek oranının 1:0,70 olduğu belirlenmiştir. Örneklenen balık total boyları ve ağırlıkları dişilerde 6,7-22,7 cm ve 3,5-74,3 g, erkeklerde ise 7,0-22,1 cm ve 3,6-70,2 g arasında dağılım göstermiştir. Boy-ağırlık ilişkisi dişilerde W = 0,0105L2,86 (R² = 0,92), erkeklerde W = 0,0160L2,70 (R² = 0,93) ve tüm bireylerde W= 0,0126L2,79 (R² = 0,92) olarak bulunmuştur. Büyümenin negatif allometrik olduğu tespit edilmiştir. Dişi, erkek ve tüm bireylerde total boy ile ağırlık arasında çok kuvvetli bir ilişki bulunduğu görülmüştür (R² > 0,92). Kondisyon faktörü değerleri dişilerde 0,456-1,237, erkeklerde 0,474-1,304 ve tüm bireylerde ise 0,456-1,304 arasında değişmektedir.

  AtıfOpenAlex3·TR Dizin2

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