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

Antimicrobial Resistance (AMR) and Alternative Strategies for Combating AMR in Aquaculture 水产养殖中抗微生物耐药性（AMR）和对抗AMR的替代策略

IF 1.3 4区农林科学

Turkish Journal of Fisheries and Aquatic Sciences Pub Date : 2023-07-21 DOI: 10.4194/trjfas24068

R. A. Bhat, I. Altinok

{"title":"Antimicrobial Resistance (AMR) and Alternative Strategies for Combating AMR in Aquaculture","authors":"R. A. Bhat, I. Altinok","doi":"10.4194/trjfas24068","DOIUrl":"https://doi.org/10.4194/trjfas24068","url":null,"abstract":"Antimicrobial resistance (AMR) in food production systems is regarded as a major threat to public health and nutrition security. Due to the potential for horizontal gene transfer, AMR in aquaculture might eventually spread to clinically important strains found in the environment, thereby affecting human health and the whole ecosystem. It is essential to comprehend the mechanisms driving AMR in aquaculture, including plasmids, integrons, and gene cassettes, to develop AMR risk management strategies. This review article presents an in-depth analysis of AMR in aquaculture and potential risks it presents to public health and the environment. The review provides a comprehensive understanding of the complexities of AMR by delving into the molecular and genetic factors that contribute to its spread. It also highlights the antibiotic usage pattern in different countries. The article also elaborates on alternative strategies that can be adopted to prevent and control fish diseases without negatively impacting the environment. This understanding may aid in the development of plans aimed at halting the spread of AMR and safeguarding public health. The various alternative approaches discussed in the review can offer potential solutions for controlling fish diseases in a manner that is both effective and environmentally safe for ecosystems and public health.","PeriodicalId":23978,"journal":{"name":"Turkish Journal of Fisheries and Aquatic Sciences","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49282707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Establishment of Stable Genetic Transformation Conditions for Novel Thermotolerant Scenedesmus sp. (Chlorophyta) 新型耐热绿藻(Scenedesmus sp.)稳定遗传转化条件的建立

IF 1.3 4区农林科学

Turkish Journal of Fisheries and Aquatic Sciences Pub Date : 2023-07-15 DOI: 10.4194/trjfas23044

Dilan Akin, Cagla Sonmez, Meral Yucel, H. Oktem

{"title":"Establishment of Stable Genetic Transformation Conditions for Novel Thermotolerant Scenedesmus sp. (Chlorophyta)","authors":"Dilan Akin, Cagla Sonmez, Meral Yucel, H. Oktem","doi":"10.4194/trjfas23044","DOIUrl":"https://doi.org/10.4194/trjfas23044","url":null,"abstract":"Microalgae became an attractive source of high value compounds such as fatty acids, carotenoids and other nutrients in recent years. In a previous study, the characterization of a novel thermo-tolerant freshwater microalga, Scenedesmus sp. ME02 with high phenolic content, particularly rich in flavonoids was done. Here, two different approaches are reported to increase the efficiency of the growth parameters of this strain. Firstly, the effects of phosphorus (P) depletion on biomass and lipid characteristics of Scenedesmus sp. ME02 were investigated. Although, P depletion resulted in a slight reduction in biomass productivity of microalgae and had a minimal effect on the lipid content and productivity; fatty acid methyl ester profile changed substantially. Particularly, percent oleic acid (18:1) increased by more than two-fold, whereas percent linolelaidic acid (C18:2n6t) and linolenic acid (C18:3n6) decreased significantly when cells were switched from P-replete (control) to P-deplete conditions. Overall, the polyunsaturated fatty acid content was significantly reduced. Secondly, stable genetic transformation conditions for Scenedesmus sp. ME02 via electroporation were optimized using two different transformation vectors. GFP gene expression was detected in colonies transformed with both vectors by RT-PCR. GFP protein expression was detected in the transgenic lines one year after initial transformation by confocal microscopy.","PeriodicalId":23978,"journal":{"name":"Turkish Journal of Fisheries and Aquatic Sciences","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46855581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microplastic Pollution at Different Trophic Levels of Freshwater Fish in a Variety of Türkiye`s Lakes and Dams 土耳其不同湖泊和水坝淡水鱼类不同营养水平的微塑料污染

IF 1.3 4区农林科学

Turkish Journal of Fisheries and Aquatic Sciences Pub Date : 2023-06-23 DOI: 10.4194/trjfas23747

Sercan Boyukalan, S. Yerli

{"title":"Microplastic Pollution at Different Trophic Levels of Freshwater Fish in a Variety of Türkiye`s Lakes and Dams","authors":"Sercan Boyukalan, S. Yerli","doi":"10.4194/trjfas23747","DOIUrl":"https://doi.org/10.4194/trjfas23747","url":null,"abstract":"Information on the occurrence of microplastic (MP; particles smaller than 5 mm) in freshwater fish biota in the Türkiye is limited. In this study, the microplastic contaminations of seven fish species (Cyprinus carpio, Carassius gibelio, Alburnus spp., Scardinius erythrophthalmus, Vimba vimba, Neogobius fluviatilis, and Perca fluviatilis) collected from Lake Manyas, Lake Uluabat, Lake Gala, Lake Gökgöl, Alaçatı Dam, Beydağ Dam, Tahtalı Dam, and Karaidemir Dam were examined. A total of 610 MP particles were extracted from the gastrointestinal systems of all fish species (n: 406). The ingested MPs were only fibers with the dominant plastic color being blue. The length of microplastics ranged from 0.10 to 4.85 mm. Mean MP length size in C. carpio species 1.40±0.90 mm, in C. gibelio species 1.32±0.88 mm, in Alburnus spp. 1.23±0.90 mm, in S. erythrophthalmus species 0.94±0.79 mm, in V. vimba species 1.11±0.69 mm, in P. fluviatilis species 1.34±0.89 mm, in N. fluviatilis species 1.25±0.97 mm.\u0000Among the studied species, the most fiber microplastic was found in P. fluviatilis. According to habitat and feeding features the highest number of microplastics was found in benthopelagic and invertivore fish. This data is anticipated to form the basis for new research and decision-making processes.","PeriodicalId":23978,"journal":{"name":"Turkish Journal of Fisheries and Aquatic Sciences","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46527251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Use of Enzyme Mixtures in Diets Based on Animal and Plant Ingredients for Litopenaeus vannamei: Effect on Digestibility, Growth, and Enzyme Activity 基于动物和植物成分的酶混合物在凡纳滨对虾日粮中的应用：对消化、生长和酶活性的影响

IF 1.3 4区农林科学

Turkish Journal of Fisheries and Aquatic Sciences Pub Date : 2023-06-23 DOI: 10.4194/trjfas21999

Mary Cruz Sánchez-Alcade, M. García-Ulloa, E. M. Montaño, C. Castro-Martínez, P. Álvarez-Ruíz, Hervey Rodríguez González

{"title":"Use of Enzyme Mixtures in Diets Based on Animal and Plant Ingredients for Litopenaeus vannamei: Effect on Digestibility, Growth, and Enzyme Activity","authors":"Mary Cruz Sánchez-Alcade, M. García-Ulloa, E. M. Montaño, C. Castro-Martínez, P. Álvarez-Ruíz, Hervey Rodríguez González","doi":"10.4194/trjfas21999","DOIUrl":"https://doi.org/10.4194/trjfas21999","url":null,"abstract":"The objective of this research was to determine the effect of adding a mixture of different exogenous enzymes at 0.005% (0.0025% for each enzyme; protease+xylanase [P/X], protease+cellulase [P/C], and xylanase+cellulase [X/C]) to diets, based on fishmeal (FM) or soybean paste (SP), on shrimp`s growth performance, survival, feed conversion, digestibility, and digestive capacity. Eight isoproteic experimental diets (FM, FM+P/X, FM+P/C, FM+X/C, SP, SP+P/X, SP+P/C, and SP+X/C) were evaluated with three replicates. Shrimps (1  0.2 g) were maintained in a recirculating system at 12 organisms/tank for 90 days. Significant differences (p ˂ 0.05) were found in all the productive parameters of L. vannamei. Compared with the control diets (FM and SP), shrimps fed with FM+P/C showed the highest final body weight (7.83 ± 0.34 g) and proteolytic activity (178.81 ± 24.49 U/mg protein), as well as the lowest feed conversion ratio (1.71 ± 0.01). In contrast, the SP+X/C group presented the highest lipolytic activity (0.0235 ± 0.0028 U/mg) and apparent digestibility (94.12 ± 0.09%). In accord with its omnivorous trophic habits, enzyme mixtures included in animal and plant based-diets improved different productive variables of L. vannamei, representing a nutritional alternative to optimize feed use in shrimp cultivation.","PeriodicalId":23978,"journal":{"name":"Turkish Journal of Fisheries and Aquatic Sciences","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49452430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of the Alga Aurantiochytrium mangrovei FIKU008-Enriched Artemia on Early Stages of the Green Tiger Shrimp, Penaeus semisulcatus 海藻Aurantiochytrium mangrowei FIKU008强化卤虫对半溃疡对虾早期生长的影响

IF 1.3 4区农林科学

Turkish Journal of Fisheries and Aquatic Sciences Pub Date : 2023-06-23 DOI: 10.4194/trjfas23912

H. Yılmaz, M. Kumlu, Ece Evliyaoğlu, J. Praiboon, M. Duman, Burcu Ak Çimen, Oya Isik, O. Eroldoğan

{"title":"Effects of the Alga Aurantiochytrium mangrovei FIKU008-Enriched Artemia on Early Stages of the Green Tiger Shrimp, Penaeus semisulcatus","authors":"H. Yılmaz, M. Kumlu, Ece Evliyaoğlu, J. Praiboon, M. Duman, Burcu Ak Çimen, Oya Isik, O. Eroldoğan","doi":"10.4194/trjfas23912","DOIUrl":"https://doi.org/10.4194/trjfas23912","url":null,"abstract":"The first aim of the present study was to determine appropriate artemia enrichment levels by using Aurantiochytrium mangrovei FIKU008 served as DHA enrichment source and secondly to test the effects of enriched-Artemia on growth and survival during the early larval stages(M1-PL7) of Penaeus semisulcatus. In the 1st experiment, four different enrichment levels of AUR (0.0,0.6,0.8 and 1.0g/L) against a control commercial solution (S-presso) were tested for 12/24-hours enrichment while in the 2nd experiment, three levels (0.0, 0.6 and 0.8g/L) of AUR enriched-Artemia were fed to larval stages. At the end of both enrichments, DHA and EPA levels were found to be significantly enhanced by using AUR at 0.6 and 0.8g/L. In the 2nd experiment, fatty acid composition of the PL was significantly affected by AUR and the PL fed with enriched diets showed higher n-3 LC-PUFA accumulation in their tissues. The larvae grown from M1 to PL7 displayed higher survivals and growth in the enriched AUR-groups compared to the control(0.0AUR). In conclusion, this study has demonstrated that the use of AUR as enrichment significantly elevated EPA and DHA levels to 0.6-0.8g/L enrichment periods and the enriched-Artemia at such levels were proven to effectively improve growth and survival of the early larval stages of P. semisulcatus.","PeriodicalId":23978,"journal":{"name":"Turkish Journal of Fisheries and Aquatic Sciences","volume":"63 10","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41295609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of Epigallocatechin Gallate on Quality of Cooked Harpiosquillid Mantis Shrimp (Harpiosquilla raphidea) Subjected to Multiple Freeze-Thaw Cycles 表没食子儿茶素没食子酸酯对多次冻融循环煮熟的Harpiosquilla raphidea虾品质的影响

IF 1.3 4区农林科学

Turkish Journal of Fisheries and Aquatic Sciences Pub Date : 2023-06-23 DOI: 10.4194/trjfas23374

W. Temdee, Avtar Singh, Hui Hong, Bin Zhang, A. F. Yeşilsu, S. Benjakul

{"title":"Influence of Epigallocatechin Gallate on Quality of Cooked Harpiosquillid Mantis Shrimp (Harpiosquilla raphidea) Subjected to Multiple Freeze-Thaw Cycles","authors":"W. Temdee, Avtar Singh, Hui Hong, Bin Zhang, A. F. Yeşilsu, S. Benjakul","doi":"10.4194/trjfas23374","DOIUrl":"https://doi.org/10.4194/trjfas23374","url":null,"abstract":"Effects of epigallocatechin gallate (EGCG) at 200 or 400 ppm on quality changes of cooked Harpiosquillid mantis shrimp (Harpiosquilla raphidea) (CHMS) meat subjected to varying freeze-thaw cycles (F-T-C; 0, 1, 3, and 5) were studied. With augmenting F-T-C, the CHMS meat underwent deterioration to higher extent as indicated by upsurges in exudate loss, tougher texture along with increased microbial counts. The addition of EGCG could retard those changes in a dose-dependent manner. Furthermore, EGCG prevented microbial growth as ascertained by lower counts and total volatile basic nitrogen (TVB) content. Lipid oxidation was also impeded in the presence of EGCG, especially at a high concentration as evidenced by lowered malondialdehyde (MDA), while maintaining polyunsaturated fatty acids, particularly EPA and DHA when F-T-C raised. Total disulfide bond content and surface hydrophobicity of CHMS added with EGCG were lower than those of the control. Those alterations were more retarded as EGCG concentration increased. Therefore EGCG at 400 ppm effectively prevented quality loss of CHMS meat during repeated F-T process.","PeriodicalId":23978,"journal":{"name":"Turkish Journal of Fisheries and Aquatic Sciences","volume":"127 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70423794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Data-poor stock assessment of Narrow-Clawed Crayfish (Pontastacus leptodactylus) in Keban Dam Lake (Türkiye) Using CMSY Method 用CMSY方法对土耳其Keban Dam湖窄爪小龙虾的种群评估

IF 1.3 4区农林科学

Turkish Journal of Fisheries and Aquatic Sciences Pub Date : 2023-06-23 DOI: 10.4194/trjfas22665

Ferhat Demirol

{"title":"Data-poor stock assessment of Narrow-Clawed Crayfish (Pontastacus leptodactylus) in Keban Dam Lake (Türkiye) Using CMSY Method","authors":"Ferhat Demirol","doi":"10.4194/trjfas22665","DOIUrl":"https://doi.org/10.4194/trjfas22665","url":null,"abstract":"In this study, as a data-poor fish stock assessment method CMSY was used to assess the current stock status of the Keban reservoir crayfish stock due to not having further data set for using the data-rich models. A total of 27 years catch data (from 1995 to 2021) was used in the analysing process of study. Estimated CMSY model parameters with confidence intervals are as follows: r=0.426 (0.357 - 0.509) year-1, k=146 (118 - 180) ton, MSY=15.7 (13.0 - 18.0) ton, B2021=77.9 (59.5 - 86.7) ton, BMSY=72.8 (58.9 - 89.9) ton, F2021 = 0.295 (0.265 - 0.386) year-1, FMSY = 0.213 (0.179 - 0.254) year-1, B2021/ BMSY = 1.07 (0.818 - 1.190) and F2021/FMSY = 1.38 (1.240 - 1.81). Our study has found that the crayfish population in the Keban reservoir has been in decline due to overfishing since the late 1990s. However, the population has shown signs of recovery since 2013 due to reduced fishing activity. After all overexploitation occurred again in 2021. Our analysis also showed that the current quota of 30.5 tons is significantly higher than the MSY of 15.7 tons. Therefore, it is recommended to reduce the crayfish quota to 15.7 tons in order to sustain the population and prevent further decline.","PeriodicalId":23978,"journal":{"name":"Turkish Journal of Fisheries and Aquatic Sciences","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43180407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Management Suggestions Based on a Data-Poor Stock Assessment Method to Avoid an Artisanal Fishery Collapse in Mexico 基于数据贫乏的种群评估方法避免墨西哥个体渔业崩溃的管理建议

IF 1.3 4区农林科学

Turkish Journal of Fisheries and Aquatic Sciences Pub Date : 2023-06-23 DOI: 10.4194/trjfas22657

Marcelino Ruiz-Domínguez, J. A. Maldonado-Coyac, Nurenskaya Vélez-Arellano, C. Quiñonez-Velázquez, L. A. Salcido-Guevara, J. Ramírez‐Pérez

{"title":"Management Suggestions Based on a Data-Poor Stock Assessment Method to Avoid an Artisanal Fishery Collapse in Mexico","authors":"Marcelino Ruiz-Domínguez, J. A. Maldonado-Coyac, Nurenskaya Vélez-Arellano, C. Quiñonez-Velázquez, L. A. Salcido-Guevara, J. Ramírez‐Pérez","doi":"10.4194/trjfas22657","DOIUrl":"https://doi.org/10.4194/trjfas22657","url":null,"abstract":"Fishing is a beneficial activity for populations settled near bodies of water. It can be split into industrial and artisanal fishing; the latter is more important from global, cultural, economic, and social points of view. Mugilids are of great commercial interest for artisanal fisheries due to their wide distribution and diverse uses; in Mexico, this resource stands out because it ranks fourth in the specific composition of catches and has shown a growing trend in yields in recent years (2008-2020). Therefore, an evaluation of the stock and behavior of the fisheries were undertaken in support of resource sustainability. We suggest that an active regulation measure be taken along with already existing passive measures. The exploitable biomass was estimated at 12,040 t, BMSY=11,424 t, and MSY=2,900 t. The resource is in decline with a tendency to overexploitation, and it could collapse if no action is taken. Therefore, we propose incorporating a temporal ban and an annual catch quota of 2,900 t to the current regulation, as well as using the methods and parameterization in this study for future evaluations.","PeriodicalId":23978,"journal":{"name":"Turkish Journal of Fisheries and Aquatic Sciences","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43288899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First Knowledge on Data Poor Stock: LWR and Condition Factor of a Recently Established Population of Atherina boyeri in Atikhisar Reservoir, Turkiye 数据贫乏存量的初步认识:土耳其Atikhisar水库新建立的阿特纳波耶里种群的LWR和条件因子

IF 1.3 4区农林科学

Turkish Journal of Fisheries and Aquatic Sciences Pub Date : 2023-06-23 DOI: 10.4194/trjfas22503

S. Kale, S. Berber, D. Acarlı, S. Gurkan

{"title":"First Knowledge on Data Poor Stock: LWR and Condition Factor of a Recently Established Population of Atherina boyeri in Atikhisar Reservoir, Turkiye","authors":"S. Kale, S. Berber, D. Acarlı, S. Gurkan","doi":"10.4194/trjfas22503","DOIUrl":"https://doi.org/10.4194/trjfas22503","url":null,"abstract":"Fisheries management practices require reliable data for the assessment of data poor stocks. This paper reported the first knowledge on length-weight relationship (LWR) and condition factor of Atherina boyeri in Atikhisar Reservoir, Çanakkale, Türkiye. A total of 1103 individuals of which 132 were immature was captured in June 2021. The sex ratio male to female was 1:1.75. The relationship between weight (W) and total length (TL), standard length (SL), and fork length (FL) were estimated as W=9E-06TL2.9212, W=1E-05SL2.9082, and W=9E-06FL2.9495. A. boyeri exhibited a negative allometric growth. The mean of Fulton`s condition factor of A. boyeri population in Atikhisar Reservoir was determined as 0.619±0.061. The mean Fulton`s condition factor for female individuals were higher than the males` condition factor and the difference between sexes was statistically significant. The present study made available valuable information on the data poor stock by providing LWR and condition factor of A. boyeri in Atikhisar Reservoir, a new freshwater system for the very euryhaline amphidromous species. The findings of the present study will substantially contribute to the knowledge of the population dynamics of the commercially important species for fisheries managers and decision-makers to maintain sustainable population levels.","PeriodicalId":23978,"journal":{"name":"Turkish Journal of Fisheries and Aquatic Sciences","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43294117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Length-based Stock Assessment for the Data-poor Crayfish Fishery from the Eğirdir Lake, Turkiye 土耳其Eğirdir湖小龙虾渔业基于长度的种群评估

IF 1.3 4区农林科学

Turkish Journal of Fisheries and Aquatic Sciences Pub Date : 2023-06-22 DOI: 10.4194/trjfas22354

Bayram Korkmaz, Y. Bolat, Mehmet Cìlbìz

{"title":"Length-based Stock Assessment for the Data-poor Crayfish Fishery from the Eğirdir Lake, Turkiye","authors":"Bayram Korkmaz, Y. Bolat, Mehmet Cìlbìz","doi":"10.4194/trjfas22354","DOIUrl":"https://doi.org/10.4194/trjfas22354","url":null,"abstract":"In this study, a stock assessment of the Pontastacus leptodactylus (Eschscholtz, 1823) population in Egirdir Lake where Turkey's most important crayfish production center, was made. The study was carried out between June 2021 and May 2022 in the concept of length-based data-poor fisheries management. TropFishR R package was used in study due to pretty effective in analysing of the length-frequency (LFQ) data. As a result of monthly fishing trials, 14,919 crayfish were caught between 29.92 and 163.38 mm in total length (14.83 – 80.95 mm carapace length). The female-male ratio of the population was found to be 1:1.21. It was determined that growth occurred (+) allometrically in all sexual groups (female, male, female+male). The growth parameters L∞, K and Ф of the P. leptodactylus stock were found to be 86.06-mm, 0.59/year, and 3.64, respectively. The annual rate of total (Z), natural (M) and fishing mortality (F) were estimated to be 3.02, 0.64, and 2.38/ year, respectively. The exploitation rate (E) of the crayfish stock was estimated to be 0.78, Fcurr/Fmax ratio 1.79 and SPR ratio 0.13. In this context, Egirdir Lake P. leptodactylus stock was evaluated as overfished. To ensure the sustainability of the stock of the species in the lake, it is necessary to reduce the mortality rate caused by fishing.","PeriodicalId":23978,"journal":{"name":"Turkish Journal of Fisheries and Aquatic Sciences","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44265389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0