Ege Journal of Fisheries and Aquatic Sciences最新文献_第6页

Biology, digestive enzymes and organosomatic indices of Chrysichthys nigrodigitatus (Lacépède, 1803) from Oyan Dam, Southwestern Nigeria 尼日利亚西南部Oyan Dam黑斑蝶的生物学、消化酶和脏体指标

Ege Journal of Fisheries and Aquatic Sciences Pub Date : 2022-12-15 DOI: 10.12714/egejfas.39.4.08

O. M. Oghenochuko, Fiyinfoluwa Georgina Leramo, Olamide Modinat Adeosun, Paulette Bangura, F. I. Adeosun

{"title":"Biology, digestive enzymes and organosomatic indices of Chrysichthys nigrodigitatus (Lacépède, 1803) from Oyan Dam, Southwestern Nigeria","authors":"O. M. Oghenochuko, Fiyinfoluwa Georgina Leramo, Olamide Modinat Adeosun, Paulette Bangura, F. I. Adeosun","doi":"10.12714/egejfas.39.4.08","DOIUrl":"https://doi.org/10.12714/egejfas.39.4.08","url":null,"abstract":"Some aspects of the biology, digestive enzymes and organosomatic indices of Chrysichthys nigrodigitatus purchased from fishermen in Oyan dam was investigated. This study was aimed at providing information on the composition of food materials found in the gut and specific activities of selected enzymes as it affects the domestication of the species. 100 specimens of the species were examined for stomach contents, length-weight relationship, digestive enzyme assay and organosomatic indices, using standard methods. Food items observed were detritus (4%), fish part (12%), Insecta (13%). Sand was observed to be 11% of total stomach volume. The logarithmic equation for length-weight relationship lnW=2.68lnl-3.79 indicated that an increase in length led to a corresponding increase in weight with ‘R’ = 0.611, calculated ‘r’=0.78, ‘a’=2.68 and ‘b’=3.79 indicating positive allometric growth pattern. Amylase exhibited high activity in the stomach, while lipase and proteinase in the stomach and posterior intestine. Specific activities of digestive enzymes showed significant differences (p<0.05). Viscerosomatic (2.92± 0.25), hepatosomatic (2.27± 0.22) indices and Fulton condition factor (1.93± 0.06) were recorded. Feed items present in the species confirm its overlapping feeding habit, indicating that the species is an omnivorous detritivore. This was also depicted in the activities of the different digestive enzymes.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90440468","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

Spatial variation in relationships of otolith measurements with body length of Prussian carp, Carassius gibelio (Bloch, 1782) collected from four lentic habitats in Samsun Province, Türkiye <s:1> kikiye Samsun省4个不同生境普鲁士鲤鱼(Carassius gibelio, Bloch, 1782)耳石测量值与体长关系的空间变异

Ege Journal of Fisheries and Aquatic Sciences Pub Date : 2022-12-15 DOI: 10.12714/egejfas.39.4.04

S. Yılmaz, Refik Akbay, M. Özpiçak, S. Saygın, N. Polat

{"title":"Spatial variation in relationships of otolith measurements with body length of Prussian carp, Carassius gibelio (Bloch, 1782) collected from four lentic habitats in Samsun Province, Türkiye","authors":"S. Yılmaz, Refik Akbay, M. Özpiçak, S. Saygın, N. Polat","doi":"10.12714/egejfas.39.4.04","DOIUrl":"https://doi.org/10.12714/egejfas.39.4.04","url":null,"abstract":"This study aimed to disclose the spatial variability in the lagenar otolith (asteriscus) dimensions-total length relationships generated for four Prussian carp, Carassius gibelio (Bloch, 1782) populations (Altınkaya Dam Lake, Bafra Fish Lakes, Lake Ladik and Lake Simenit) in Samsun Province, Türkiye. Relationship between length and weight of the fish was also described for each population. Samples were obtained from commercial fishermen in different periods between February 2017 and March 2018. The length, height, and weight of each otolith were determined. A non-linear function was used to define allometric relationships between asteriscus measurements and body size. The slopes of the regressions acquired for the right and left otoliths at each sampling site did not show any significant difference. All of the relationships were found to be statistically significant (P<0.001). The r2 values ranged from 0.61 to 0.95, and the mean values of the percent prediction error varied from 3.10 to 7.45. The ANCOVA test determined significant spatial differences in regression slopes for the three otolith variables. Our findings revealed that otolith development reflected somatic growth, but this varied by sampling area.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88361983","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

Detection and public health risk assessment of microplastics in disposable (PET) bottled water produced and sold locally in the Aegean Region 爱琴海地区当地生产和销售的一次性瓶装水中微塑料的检测和公共卫生风险评估

Ege Journal of Fisheries and Aquatic Sciences Pub Date : 2022-12-15 DOI: 10.12714/egejfas.39.4.02

A. Yozukmaz

{"title":"Detection and public health risk assessment of microplastics in disposable (PET) bottled water produced and sold locally in the Aegean Region","authors":"A. Yozukmaz","doi":"10.12714/egejfas.39.4.02","DOIUrl":"https://doi.org/10.12714/egejfas.39.4.02","url":null,"abstract":"Intensive use of plastic has led to the accumulation of plastics in all ecosystems and inevitable environmental pollution. Plastic wastes have undergone structural degradation with the effect of environmental factors and have been disintegrated into nano and microparticles; thus, might accumulate in living organisms and reach unpredictable levels in the food chain. In recent years, the impacts of these particles called \"microplastics\" (MP’s) have become one of the most important issues in the scientific world. The aim of this study is to evaluate the possible presence of MP’s in drinking water, that represents the most important nutrition element for human beings. For this purpose, samples of 6 different brands of disposable (PET) bottles produced and sold locally were examined. A total of 36 samples in bottles with 2 different volumes were analyzed in accordance with international standards and the results were evaluated. As a result of the study, the presence of MP’s was detected in all samples analyzed. A total of 207 MP’s were found in 36 samples. As a result of the analysis, a mean of 7.35 ± 9.66 MP L-1 particles was detected. It was determined that the most dominant type in terms of shape was fiber (91%), the most dominant type in terms of color was blue (57%) and the most dominant type in terms of size was 0.1-1 mm (71%). When Estimated Daily Intake (EDI) rates were calculated for public health risk assessment, it was determined that the most affected group is the 3-6 age group (EDI (avg) = 0.42). The importance of making recycling more widespread, raising awareness of consumers and making the necessary legal regulations on the issue was emphasized in order to reduce the problem at its source.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75702050","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

Integrated assessment with biomarker responses and metal concentrations on some fish species from İzmir Bay: A preliminary investigation İzmir湾部分鱼类生物标志物反应和金属浓度综合评价的初步调查

Ege Journal of Fisheries and Aquatic Sciences Pub Date : 2022-12-15 DOI: 10.12714/egejfas.39.4.03

Mustafa Bilgin, Esin Uluturhan-Suzer, E. Darılmaz

{"title":"Integrated assessment with biomarker responses and metal concentrations on some fish species from İzmir Bay: A preliminary investigation","authors":"Mustafa Bilgin, Esin Uluturhan-Suzer, E. Darılmaz","doi":"10.12714/egejfas.39.4.03","DOIUrl":"https://doi.org/10.12714/egejfas.39.4.03","url":null,"abstract":"Antioxidant related biomarkers (superoxide dismutase, catalase, malondialdehyde) were investigated to evaluate metal (Hg, Cd, Pb, Cr, Cu, Zn, and Mn) bioaccumulation in some organs of fish species (Sparus aurata, Chelon labrosus, Diplodus vulgaris) from the İzmir Bay. Samples were collected at November 2019 from Inner and Outer Bays. Metal and biomarker analyses were carried out by Atomic Absorption Spectrometer and microplate reader, respectively. For metal analyses in organs, higher metal bioaccumulations were found at liver tissues. Higher Hg and Zn concentrations were found in S. aurata, higher Cd, Cr, Cu and, Mn concentrations were detected in C. labrosus and higher Pb concentrations were determined in D. vulgaris. In biomarker results, superoxide dismutase (SOD) and catalase (CAT) activities were generally higher in gills, however, MDA contents were higher at liver. The highest biomarker results were detected at C. labrosus. Statistical analyses were demonstrated that especially MDA content were expressed strong responses for the metal bioaccumulations. Also, Mn levels were considerably correlated with all biomarkers as expected. This study revealed that combined utilization of biomarkers and metal concentrations could be a vital indicator to investigate health status of the marine ecosystems.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80218344","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

The remarkable observation for a mallard (Anas platyrhynchos) food from estuarine/coastal area (İzmir/Turkey): A mosquitofish (Gambusia holbrooki) 来自河口/沿海地区的绿头鸭(Anas platyrhynchos)食物的显著观察(İzmir/土耳其):食蚊鱼(Gambusia holbrooki)

Ege Journal of Fisheries and Aquatic Sciences Pub Date : 2022-09-15 DOI: 10.12714/egejfas.39.3.03

A. Salman, I. Kurtul, H. Sarı

引用次数: 0

A simple method for fish silage production: Using yoghurt as inoculum 一种简单的鱼青贮生产方法:以酸奶为接种剂

Ege Journal of Fisheries and Aquatic Sciences Pub Date : 2022-09-15 DOI: 10.12714/egejfas.39.3.11

A. S. Özkütük, G. Özyurt

{"title":"A simple method for fish silage production: Using yoghurt as inoculum","authors":"A. S. Özkütük, G. Özyurt","doi":"10.12714/egejfas.39.3.11","DOIUrl":"https://doi.org/10.12714/egejfas.39.3.11","url":null,"abstract":"The evaluation of seafood processing wastes is an important issue in terms of both preventing environmental pollution and adding value to these wastes economically. The most practical method that can convert seafood processing waste into a valuable feed source and plant fertilizer is to make silage. In this study, the ripening times and nutritional components of fish silages prepared with direct addition of lactic acid bacteria culture (Streptococcus thermophilus), acidifying chemicals (formic acid) and yogurt, which is a fermented food, were compared. In the research, sardine fish (Sardina pilchardus) wastes (head, skin, bones, internal organs, etc.) were used in fish silage production. It was observed that all fish silages completed the ripening phase within a maximum of 10 days. It was determined that the moisture, ash, protein and lipid contents of the groups prepared with acid, bacteria and yoghurt ranged between 63-66%, 5.6-5.7%, 11.3-11.8% and 12.18-13.65%, respectively. As a result of the research, it was observed that fish silages made with the addition of yoghurt as an alternative to silages made with direct addition of pure bacterial culture or acid addition met the expectations in terms of both ripening time and nutrient components.","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":"80227417","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

Distribution of phytoplanktonic species in the sea snot in 2021 in the Marmara Sea 2021年马尔马拉海海鼻涕中浮游植物种类分布

Ege Journal of Fisheries and Aquatic Sciences Pub Date : 2022-09-15 DOI: 10.12714/egejfas.39.3.09

Levent Yurga

引用次数: 0

The invasive silver-cheeked toadfish, Lagocephalus sceleratus (Gmelin, 1789) appeared in the Sea of Marmara after more than a decade: A call for awareness 十多年后，入侵的银颊蟾鱼Lagocephalus sceleratus (Gmelin, 1789)出现在马尔马拉海:这是对意识的呼吁

Ege Journal of Fisheries and Aquatic Sciences Pub Date : 2022-09-15 DOI: 10.12714/egejfas.39.3.12

H. Bal, Ömerhan Dürrani

引用次数: 0

Growth performance, molting frequency and carapace coloration of marbled crab (Pachygrapsus marmoratus) in different salinity levels 不同盐度条件下大理石纹蟹的生长性能、蜕皮频率和甲壳颜色

Ege Journal of Fisheries and Aquatic Sciences Pub Date : 2022-09-15 DOI: 10.12714/egejfas.39.3.08

Onur Karadal

{"title":"Growth performance, molting frequency and carapace coloration of marbled crab (Pachygrapsus marmoratus) in different salinity levels","authors":"Onur Karadal","doi":"10.12714/egejfas.39.3.08","DOIUrl":"https://doi.org/10.12714/egejfas.39.3.08","url":null,"abstract":"This study was conducted to evaluate the parameters on growth performance, molting frequency and carapace coloration of marbled crab (Pachygrapsus marmoratus Fabricius, 1787). Crabs were collected from Urla, İzmir. The experiment was performed in 10 L plastic containers filled with 6 L of seawater at four different salinity levels (5‰, 15‰, 25‰ and 35‰). Ten crabs with an initial mean weight of 0.78±0.03 g were placed in each container with three replicates. Crabs were fed once a day with a commercial diet (46% protein and 18% lipid) for 12 weeks. At the end of the study, the final mean weight (FMW) of the 25‰ group was significantly higher than the 5‰ and 15‰ groups (P<0.05). Specific growth rates (SGR) of the 15‰ and the 35‰ groups and feed conversion ratio (FCR) of the 25‰ group were significantly higher than the 5‰ group (P<0.05). The mean molting frequency (MMF) of the 25‰ group was significantly higher than the 5‰ group (P<0.05). Final lightness (L*) of the 5‰ and 15‰ were significantly lower than their initials (P<0.05). Final redness (a*) of the 25‰ group was the highest among the experimental groups (P<0.05). Final yellowness (b*) of the 25‰ group was significantly higher than the 5‰ and 15‰ groups (P<0.05). According to the results, it is recommended to keep the salinity at 25‰ under marble crab rearing conditions. Further studies are needed to reveal the potential properties of this species in marine aquariums.","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":"74340380","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

Mass mortality report of the critically endangered Pinna nobilis (Linnaeus, 1758) in Gökçeada (North Aegean Sea, Turkey) 土耳其北爱琴海Gökçeada地区极度濒危Pinna nobilis (Linnaeus, 1758)大量死亡报告

Ege Journal of Fisheries and Aquatic Sciences Pub Date : 2022-09-15 DOI: 10.12714/egejfas.39.3.06

D. Acarlı, S. Acarlı, M. I. Öz

引用次数: 0