Ege Journal of Fisheries and Aquatic Sciences最新文献_第3页

Two different methods of sperm collection in European catfish (Silurus glanis Linnaeus, 1758) 欧洲鲶鱼的两种不同的精子收集方法(Silurus glanis Linnaeus, 1758)

Ege Journal of Fisheries and Aquatic Sciences Pub Date : 2023-06-15 DOI: 10.12714/egejfas.40.2.06

Merve Tınkır, A. Yılayaz, Devrim Memiş

引用次数: 0

By-catch ratios from the bogue (Boops boops) gillnet fishery around the sea-cage fish farms in Güllük Bay (Aegean Sea) 爱琴海g<s:1>利尔<e:1>克湾(爱琴海)海网箱养鱼场周围bogue (Boops Boops)刺网渔业的副渔获率

Ege Journal of Fisheries and Aquatic Sciences Pub Date : 2023-06-15 DOI: 10.12714/egejfas.40.2.08

Okan Ertosluk, O. Akyol, Tevfik Ceyhan, Aytaç Özgül

{"title":"By-catch ratios from the bogue (Boops boops) gillnet fishery around the sea-cage fish farms in Güllük Bay (Aegean Sea)","authors":"Okan Ertosluk, O. Akyol, Tevfik Ceyhan, Aytaç Özgül","doi":"10.12714/egejfas.40.2.08","DOIUrl":"https://doi.org/10.12714/egejfas.40.2.08","url":null,"abstract":"This study aims to reveal the by-catch rates for gillnet fishery, targeted Boops boops by small-scale fisheries around fish farms in Güllük Bay (Aegean Sea), and to determine the by-catch per unit effort (BPUE) rates. The study was carried out through deck sampling at Göltürkbükü, Gündoğan, Yalıkavak, and Torba fishing ports during two seasons between November and April (2017-2018 / 2018-2019). A total of 147 fishing operations from 13 boats were randomly monitored. In gillnet fishing for bogue, a total of 18163 kg of the catch was caught from 48 species belonging to 30 families, including invertebrates. The target Boops boops was the most common species with a rate of 91.9%, of which 8.1% was determined as a by-catch. The most caught by-catch species are Diplodus annularis (Linnaeus, 1758), Scomber colias (Gmelin, 1789), Trachurus trachurus (Linnaeus, 1758), Pagellus acarne (Risso, 1827), Scomber scombrus (Linnaeus, 1758). While the average BPUE was 4.77 ± 0.85 kg.1000 m-1 in 2018, it was 3.20 ± 0.58 kg.1000 m-1 in 2019. November gives the highest average in terms of BPUE values. The average BPUE ranged from 0 to 19.1 kg.1000 m-1 (mean: 7.97 ± 2.83 kg.1000 m-1). Statistically, there is a significant difference in BPUE values between the months (Kruskal-Wallis test, p < 0.05).","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89593686","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}

引用次数: 0

Investigation of the structure and hardness properties of Anodonta anatina mussel shells 鸭齿蚌壳的结构与硬度研究

Ege Journal of Fisheries and Aquatic Sciences Pub Date : 2023-06-15 DOI: 10.12714/egejfas.40.2.07

K. Öksüz, H. Şereflişan

{"title":"Investigation of the structure and hardness properties of Anodonta anatina mussel shells","authors":"K. Öksüz, H. Şereflişan","doi":"10.12714/egejfas.40.2.07","DOIUrl":"https://doi.org/10.12714/egejfas.40.2.07","url":null,"abstract":"In this study, the shell structure of the freshwater mussel Anodonta anatina (Linnaeus, 1758) which has a widespread population in Gölbaşı Lake (Hatay) and is not economically exploited, was microscopically examined at a morphological level. It was determined that the shells of Anodonta anatina, which are not under significant fishing pressure, are mostly found discarded along the shores of the lake. This mussel species is important as a composite biological material with multifunctional roles in freshwater ecology. Considering the potential use of freshwater mussel shells as a biological material, an assessment of the shell structure, physical properties, mechanical strength, shell microstructure, and morphological characteristics of A. anatina was conducted. When cross-sections of the shell taken from the umbo, middle periostracum, and the region close to the pallial edge were examined in the dorsal-ventral direction, it was determined that the periostracum layer in the umbo region had a more prismatic and polygonal structure. The interior of the shell was found to consist of a shiny nacreous layer. In nacreous shell sections, it was observed that the nacreous layer contained more distinct layers near the pallial edge. Vickers microhardness tests were performed on individual shells, and it was found that the hardness value of the inner layer was the highest (625.5 ±172.7 HV), while the outer layer had a lower hardness value (531.5 ±110.7 HV). Based on XRF data, it was shown that the seashell powder is mainly composed of calcium oxide (98.8% wt., CaO) as a biological material.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86007946","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}

引用次数: 0

Effect of the pulsed electric field method on salt transfer in European sardine (Sardina pilchardus Walbaum, 1792) 脉冲电场法对欧洲沙丁鱼盐转移的影响(Sardina pilchardus Walbaum, 1792)

Ege Journal of Fisheries and Aquatic Sciences Pub Date : 2023-06-15 DOI: 10.12714/egejfas.40.2.09

Emine Aşık Canbaz, Bilgenur Üçgül, A. C. Seydim

{"title":"Effect of the pulsed electric field method on salt transfer in European sardine (Sardina pilchardus Walbaum, 1792)","authors":"Emine Aşık Canbaz, Bilgenur Üçgül, A. C. Seydim","doi":"10.12714/egejfas.40.2.09","DOIUrl":"https://doi.org/10.12714/egejfas.40.2.09","url":null,"abstract":"One of the marketing options for European sardine (Sardina pilchardus), which consumers demand nutritional value and taste, is processing in brine that provides a longer shelf life. However, the slow rate of salt diffusion is the biggest obstacle to be overcome. In this context, the pulsed electric field method (PEF) is considered an innovative method that accelerates mass transfer. This study applied PEF to sardine before and while they were kept in brine. The salt concentration of the final product was found to be higher than the control group, which was not applied PEF (p<0.05). However, the difference between the PEF applied samples was insignificant while ash content increased, and water activity value decreased in all samples due to salt absorption. When pH values were compared, no significant difference was observed between samples and storage periods. According to the scanning electron microscope (SEM) images, the number and diameter of the pores increased due to the rise in application time. Therefore, it was concluded that PEF application could be considered a pretreatment to increase salt diffusion in European sardine.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73950085","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}

引用次数: 0

New record for the algal flora of Türkiye: Antithamnionella spirographidis (Schiffner) E.M.Wollaston, 1968 (Ceramiales, Ceramiaceae) <s:1>基耶藻类区系新记录:Antithamnionella spirographidis (Schiffner) E.M.Wollaston, 1968 (Ceramiales, Ceramiaceae)

Ege Journal of Fisheries and Aquatic Sciences Pub Date : 2023-06-15 DOI: 10.12714/egejfas.40.2.10

Senem Önen Tarantini

引用次数: 0

Growth parameters with traditional and artificial neural networks methods of big-scale sand smelt (Atherina boyeri Risso, 1810) 大型砂冶炼厂的传统和人工神经网络生长参数分析方法(Atherina boyeri Risso, 1810)

Ege Journal of Fisheries and Aquatic Sciences Pub Date : 2023-06-15 DOI: 10.12714/egejfas.40.2.02

S. Benzer, R. Benzer

{"title":"Growth parameters with traditional and artificial neural networks methods of big-scale sand smelt (Atherina boyeri Risso, 1810)","authors":"S. Benzer, R. Benzer","doi":"10.12714/egejfas.40.2.02","DOIUrl":"https://doi.org/10.12714/egejfas.40.2.02","url":null,"abstract":"In this study, the growth parameters of big-scale sand smelt (Atherina boyeri Risso, 1810) in İznik Lake has been determined with traditional (length weight relationships (LWRs), von Bertalanffy (VB), condition factor (CF)) and modern approaches (Artificial Neural Networks - ANNs). A total of 635 specimens (44.84% female and 55.16% male) were collected from the local fisherman during the hunting season between April 2018 to April 2019. Mean fork length (FL) (mm, min-max), mean W (g, min-max) and mean CF (value, min-max) were estimated as 67.31 mm (40.10 - 97.77 mm), 2.57g (0.53 - 7.50 g), and 0.790 (0.170-1.520) for all individuals. The length-weight relationships were determined W=0.00001437L2.8602 for female, W=0.00001570L2.8266 for male and W=0.00001328L2.8717 for all individuals. The von Bertalanffy equations were determined Lt=136.218 [1-e(-0.240(t+0.51))] for female, Lt=155.042 [1-e(-0.185(t+0.73))] for male, and Lt=146.916 [1-e(-0.205(t+0.64))] for all individuals. The values in training (MSE (Mean Squared Error) 4.52559e-5, R (correlation coefficients) 9.09347e-1), verification (MSE 4.86111e-5, R 9.00931e-1) and test data (MSE 3.391999e-5, R 9.43465e-1) were found in calculations made with ANNs. It was determined that ANNs could be an alternative for evaluating growth estimation.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77678773","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}

引用次数: 1

Feeding habits of two skate species, Raja miraletus Linnaeus, 1758 and Dipturus oxyrinchus (Linnaeus, 1758) (Chondrichthyes, Rajidae), around the Gökçeada Island (Northern Aegean Sea)

Ege Journal of Fisheries and Aquatic Sciences Pub Date : 2023-06-15 DOI: 10.12714/egejfas.40.2.04

Koray Cabbar, C. C. Yığın

{"title":"Feeding habits of two skate species, Raja miraletus Linnaeus, 1758 and Dipturus oxyrinchus (Linnaeus, 1758) (Chondrichthyes, Rajidae), around the Gökçeada Island (Northern Aegean Sea)","authors":"Koray Cabbar, C. C. Yığın","doi":"10.12714/egejfas.40.2.04","DOIUrl":"https://doi.org/10.12714/egejfas.40.2.04","url":null,"abstract":"This study investigated the feeding habits of Raja miraletus Linnaeus, 1758 and Dipturus oxyrinchus (Linnaeus, 1758). For the purpose of this study, the specimens were obtained monthly from the commercial trawlers operating around the Gökçeada Island in the Northern Aegean Sea between February 2019 and February 2020. A total of 29 (24 female and 5 male) brown rays (Raja miraletus) and 36 (20 female and 16 male) longnosed skates (Dipturus oxyrinchus) were captured. The total lengths of the R. miraletus specimens ranged between 24.0 cm and 53.9 cm, while the D. oxyrinchus specimens measured between 17.1 cm and 85.0 cm. Total length-weight relationships of R. miraletus and D. oxyrinchus specimens, respectively; W=0.0002TL3.92 (R2=0.97) and W=0.0007TL3.43 (R2=0.97) were calculated. The analysis of the stomach content of the specimens showed that crustacea were the primary and the most important prey group for R. miraletus (IRI% = 67.09), followed by teleosts (IRI% = 1.00) and cephalopods (IRI% = 0.45). The D. oxyrinchus specimens were determined to primarily feed on crustacea (IRI% = 74.3), followed by teleosts (IRI% = 6.50) and nematoda (IRI% = 0.40).","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83516498","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}

引用次数: 0

Growth and feeding features of the four-spotted megrim Lepidorhombus boscii (Risso,1810) in the Aegean Sea, Türkiye 爱琴海四斑拟盲蝽(Lepidorhombus boscii, Risso,1810)的生长和摄食特征

Ege Journal of Fisheries and Aquatic Sciences Pub Date : 2023-06-15 DOI: 10.12714/egejfas.40.2.05

E. Ulutürk, M. Kaya

引用次数: 0

Relationships between environmental variables and abundance of Cnidaria and Echinodermata in Çardak Lagoon, Çanakkale Strait Çanakkale海峡Çardak礁湖环境变量与刺胞菌和棘皮菌丰度的关系

Ege Journal of Fisheries and Aquatic Sciences Pub Date : 2023-06-15 DOI: 10.12714/egejfas.40.2.03

S. Acar, A. Ateş, E. Dağlı, A. Doğan

引用次数: 0

Molecular investigation of nematodes isolated from three economical fish species taken from Çanakkale (Türkiye) fish market Çanakkale (t<s:1> rkiye)鱼市3种经济鱼中线虫的分子研究

Ege Journal of Fisheries and Aquatic Sciences Pub Date : 2023-06-15 DOI: 10.12714/egejfas.40.2.01

Ruhay Aldık, Fikret Çakır, Özlem Tonguç Yayıntaş

引用次数: 1