Pub Date : 2023-12-15DOI: 10.12714/egejfas.40.4.10
Melek Zeybek Yünlü, Eylem Aydemir Çil, T. van Haaren
The aim of this paper is to contribute to the aquatic Oligochaeta fauna of Türkiye. The study area selected for this research is Karasu Stream, located in the Black Sea Region of Türkiye, in the province of Sinop. Benthic macroinvertebrate samples were collected on a monthly basis between February 2013 and January 2014 from 10 selected stations in the study area. As a result of the study, Rhyacodrilus falciformis Bretscher, 1901 is reported as a new record for the Oligochaeta fauna of Türkiye. Besides being recognized as a new record species, this record also extends the species' distribution area to the Asian part of Türkiye. Additionally, this study provides detailed information on the biological, ecological, and morphometric characteristics, as well as the distribution of R. falciformis, identified as a new record for the fauna of Türkiye.
{"title":"A new oligochaeta record for Türkiye, Rhyacodrilus falciformis Bretscher, 1901 (Annelida: Naididae: Rhyacodrilinae)","authors":"Melek Zeybek Yünlü, Eylem Aydemir Çil, T. van Haaren","doi":"10.12714/egejfas.40.4.10","DOIUrl":"https://doi.org/10.12714/egejfas.40.4.10","url":null,"abstract":"The aim of this paper is to contribute to the aquatic Oligochaeta fauna of Türkiye. The study area selected for this research is Karasu Stream, located in the Black Sea Region of Türkiye, in the province of Sinop. Benthic macroinvertebrate samples were collected on a monthly basis between February 2013 and January 2014 from 10 selected stations in the study area. As a result of the study, Rhyacodrilus falciformis Bretscher, 1901 is reported as a new record for the Oligochaeta fauna of Türkiye. Besides being recognized as a new record species, this record also extends the species' distribution area to the Asian part of Türkiye. Additionally, this study provides detailed information on the biological, ecological, and morphometric characteristics, as well as the distribution of R. falciformis, identified as a new record for the fauna of Türkiye.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":"37 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139000107","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}
Pub Date : 2023-12-15DOI: 10.12714/egejfas.40.4.03
Ö. Erdem, M. T. Dinçer
It is essential for human health to maintain a diet rich in unsaturated fatty acids, particularly polyunsaturated (PUFA), composed of omega-3. Atlantic salmon (Salmo salar), an important source of omega 3 long chain PUFAs, has a sizeable amount in international seafood trade because it is an abundant source of omega-3 long-chain PUFAs. Despite the fact that cooking fish to high temperatures alters its fat, protein, vitamin, and mineral content, cooked fish is preferred by consumers. The purpose of this research was to compare nutritional, physical and sensory properties of Atlantic salmon cooked in the oven, steamed and also a combination of the two cooking methods. Farmed Atlantic salmon was used to make steaks that were defrosted in the fridge the night before. Cooking methods applied were baking in the oven, steaming, and a combination of oven-baking and steaming. The results showed that the crude protein level of oven-baked salmon meat was greatest among all cooking methods. Heat treatment affected the fatty acid composition of Atlantic salmon flesh, as shown that the total saturated fatty acids of cooked fish groups were higher than those of raw salmon. It was determined that oven baking was the most effective heat treatment for maintaining all lipid characteristics of the meat, including the PUFA concentration and n-3/n-6 ratio. When EPA and DHA values of all cooking groups were compared, combination cooking group has lowest value than other cooking groups.
{"title":"Effects of different cooking methods on the proximate and fatty acid composition of Atlantic salmon (Salmo salar)","authors":"Ö. Erdem, M. T. Dinçer","doi":"10.12714/egejfas.40.4.03","DOIUrl":"https://doi.org/10.12714/egejfas.40.4.03","url":null,"abstract":"It is essential for human health to maintain a diet rich in unsaturated fatty acids, particularly polyunsaturated (PUFA), composed of omega-3. Atlantic salmon (Salmo salar), an important source of omega 3 long chain PUFAs, has a sizeable amount in international seafood trade because it is an abundant source of omega-3 long-chain PUFAs. Despite the fact that cooking fish to high temperatures alters its fat, protein, vitamin, and mineral content, cooked fish is preferred by consumers. The purpose of this research was to compare nutritional, physical and sensory properties of Atlantic salmon cooked in the oven, steamed and also a combination of the two cooking methods. Farmed Atlantic salmon was used to make steaks that were defrosted in the fridge the night before. Cooking methods applied were baking in the oven, steaming, and a combination of oven-baking and steaming. The results showed that the crude protein level of oven-baked salmon meat was greatest among all cooking methods. Heat treatment affected the fatty acid composition of Atlantic salmon flesh, as shown that the total saturated fatty acids of cooked fish groups were higher than those of raw salmon. It was determined that oven baking was the most effective heat treatment for maintaining all lipid characteristics of the meat, including the PUFA concentration and n-3/n-6 ratio. When EPA and DHA values of all cooking groups were compared, combination cooking group has lowest value than other cooking groups.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":"69 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138999408","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}
Pub Date : 2023-12-15DOI: 10.12714/egejfas.40.4.05
Badrul Islam Elsevar, M. Bayır
Bioinformatics has revolutionized the way we study gene expression and regulation, enabling researchers to analyze large-scale genomic data with unprecedented speed and precision. In this study, we use bioinformatics tools and methods to compare mRNA transcription of glutathione S-transferase (gstr) gene in two different fish species: common carp and brown trout. In this study, liver, intestine, muscle, brain, heart, eye, spleen, gill, kidney, stomach, ovary and testis samples were taken from male and female brown trout and common carp, and total RNA was isolated from each tissue to synthesize cDNA from these tissues. Then, the transcript amounts of the gstr gene were determined by qPCR from all tissue samples. Gene structures, conserved gene synteny design, phyogenetic tree analyzes and similarity-identity ratios with other vertebrates were determined. When the transcriptional differences between male and female tissues for the brown trout gstr gene were examined, it was seen that the intestine, gill, kidney, stomach, muscle and gonads were significantly higher in male fish (p<0.05), but the differences between other tissues were not statistically significant. It has been determined that the highest gene expression was liver (p<0.05) and brain, eye, spleen, kidney, heart and spleen tissues have significantly lower gstr gene expression than other tissues in both male and female in common carp. In addition, the in-silico analysis determined that the brown trout gstr gene shared the highest similarity and identity ratio with rainbow trout, and the common carp gstr gene shared the highest similarity and identity ratio with goldfish.
{"title":"Bioinformatics studies and comparison of mRNA transcription of glutathione S-transferase gene in some tissues of common carp (Cyprinus carpio) and brown trout (Salmo trutta)","authors":"Badrul Islam Elsevar, M. Bayır","doi":"10.12714/egejfas.40.4.05","DOIUrl":"https://doi.org/10.12714/egejfas.40.4.05","url":null,"abstract":"Bioinformatics has revolutionized the way we study gene expression and regulation, enabling researchers to analyze large-scale genomic data with unprecedented speed and precision. In this study, we use bioinformatics tools and methods to compare mRNA transcription of glutathione S-transferase (gstr) gene in two different fish species: common carp and brown trout. In this study, liver, intestine, muscle, brain, heart, eye, spleen, gill, kidney, stomach, ovary and testis samples were taken from male and female brown trout and common carp, and total RNA was isolated from each tissue to synthesize cDNA from these tissues. Then, the transcript amounts of the gstr gene were determined by qPCR from all tissue samples. Gene structures, conserved gene synteny design, phyogenetic tree analyzes and similarity-identity ratios with other vertebrates were determined. When the transcriptional differences between male and female tissues for the brown trout gstr gene were examined, it was seen that the intestine, gill, kidney, stomach, muscle and gonads were significantly higher in male fish (p<0.05), but the differences between other tissues were not statistically significant. It has been determined that the highest gene expression was liver (p<0.05) and brain, eye, spleen, kidney, heart and spleen tissues have significantly lower gstr gene expression than other tissues in both male and female in common carp. In addition, the in-silico analysis determined that the brown trout gstr gene shared the highest similarity and identity ratio with rainbow trout, and the common carp gstr gene shared the highest similarity and identity ratio with goldfish.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":"42 26","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138995954","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}
Pub Date : 2023-12-15DOI: 10.12714//egejfas.40.4.08
Kutsal Gamsız, A. Korkut, A. Kop
In this study, the effect of the use of feeds containing different protein ratios on the growth performance of juvenile sea bass (Dicentrarchus labrax L., 1758) reared in freshwater was investigated. Sea bass fry with an average body weight of 1.0 ± 0.03 g were stocked in 120 liter tanks in triplicate after their adaptation to freshwater. The feeds used in the study had different protein/similar fat content. Accordingly, the experimental groups were named as 45CP (45% CP / 18% CF), 50CP (50% CP / 18% CF) and 55CP (55% CP / 18% CF). At the end of the experiment, the highest body weight gain was 5.84 ± 0.03 g in the 55CP group, while the other groups were 5.73 ± 0.09 g (45CP) and 5.8 ± 0.08 g (50CP). SGR rates were similar for all three groups and there was no statistical difference between the groups (P>0.05). SGR values of the groups were calculated as 1.94 ± 0.04 (45CP), 1.89 ± 0.01 (50CP), 1.91 ± 0.02 (55CP), respectively. There was no statistical difference between the 45CP and 55CP groups, while the 50CP group showed a statistically lower FCR rate than the other groups (P<0.05). FCR values were calculated as 1.36 ± 0.05, 1.29 ± 0.03, 1.37 ± 0.04, respectively. There was no difference between the survival rates of the groups. According to the results of the study, it was concluded that sea bass fish can be raised in freshwater, especially in the fry stage, and that it is more effective than the commercial feeds currently used.
{"title":"The effect of feeds containing different protein levels on growth and survival rates of European sea bass (Dicentrarchus labrax L., 1758) juveniles grown in freshwater","authors":"Kutsal Gamsız, A. Korkut, A. Kop","doi":"10.12714//egejfas.40.4.08","DOIUrl":"https://doi.org/10.12714//egejfas.40.4.08","url":null,"abstract":"In this study, the effect of the use of feeds containing different protein ratios on the growth performance of juvenile sea bass (Dicentrarchus labrax L., 1758) reared in freshwater was investigated. Sea bass fry with an average body weight of 1.0 ± 0.03 g were stocked in 120 liter tanks in triplicate after their adaptation to freshwater. The feeds used in the study had different protein/similar fat content. Accordingly, the experimental groups were named as 45CP (45% CP / 18% CF), 50CP (50% CP / 18% CF) and 55CP (55% CP / 18% CF). At the end of the experiment, the highest body weight gain was 5.84 ± 0.03 g in the 55CP group, while the other groups were 5.73 ± 0.09 g (45CP) and 5.8 ± 0.08 g (50CP). SGR rates were similar for all three groups and there was no statistical difference between the groups (P>0.05). SGR values of the groups were calculated as 1.94 ± 0.04 (45CP), 1.89 ± 0.01 (50CP), 1.91 ± 0.02 (55CP), respectively. There was no statistical difference between the 45CP and 55CP groups, while the 50CP group showed a statistically lower FCR rate than the other groups (P<0.05). FCR values were calculated as 1.36 ± 0.05, 1.29 ± 0.03, 1.37 ± 0.04, respectively. There was no difference between the survival rates of the groups. According to the results of the study, it was concluded that sea bass fish can be raised in freshwater, especially in the fry stage, and that it is more effective than the commercial feeds currently used.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":"93 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138998862","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}
Pub Date : 2023-12-15DOI: 10.12714/egejfas.40.4.06
H. Dane, T. Şişman
Many freshwater ecosystems are contaminated with heavy metals released by municipal wastewater, cultivation and factory wastewater. The aim of the study was to evaluate the negative impact of metal pollution on the fish reproductive system. It was performed using the gonadal histopathology, hepatosomatic index (HSI), and gonadosomatic index (GSI) of three fish species, Capoeta damascina, Squalius semae and Alburnus sellal inhabiting in Karasu River (Erzurum, Turkey) contaminated by various anthropogenic activities. The highest GSI values were determined for each sex according to the seasons, and lower GSI values were observed in polluted stations in all three species. It was observed that HSI values in fish varied significantly from station to station. In addition, an increase in ovarian and testicular lesions (degeneration in oocyte and spermatocytes, atresia, congestion, infiltration, edema, vascular hypertrophy, fibrosis) was detected in the polluted areas. The results clearly showed that the metal pollution in the river adversely affected the reproductive system of the fish species living in the river.
{"title":"The gonadal health status of Cyprinidae fish species collected from the river impacted by anthropogenic activities","authors":"H. Dane, T. Şişman","doi":"10.12714/egejfas.40.4.06","DOIUrl":"https://doi.org/10.12714/egejfas.40.4.06","url":null,"abstract":"Many freshwater ecosystems are contaminated with heavy metals released by municipal wastewater, cultivation and factory wastewater. The aim of the study was to evaluate the negative impact of metal pollution on the fish reproductive system. It was performed using the gonadal histopathology, hepatosomatic index (HSI), and gonadosomatic index (GSI) of three fish species, Capoeta damascina, Squalius semae and Alburnus sellal inhabiting in Karasu River (Erzurum, Turkey) contaminated by various anthropogenic activities. The highest GSI values were determined for each sex according to the seasons, and lower GSI values were observed in polluted stations in all three species. It was observed that HSI values in fish varied significantly from station to station. In addition, an increase in ovarian and testicular lesions (degeneration in oocyte and spermatocytes, atresia, congestion, infiltration, edema, vascular hypertrophy, fibrosis) was detected in the polluted areas. The results clearly showed that the metal pollution in the river adversely affected the reproductive system of the fish species living in the river.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":"83 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138996241","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}
Pub Date : 2023-12-15DOI: 10.12714/egejfas.40.4.01
Nehir Kaymak, Y. Emre, N. Emre, Ş. Akın
Lake Koca (Dalaman), a wetland in the western Mediterranean basin of Türkiye, is an extraordinary lake with salty, fresh, and sulfurous waters and is home to high biodiversity. The present study examines the spatial and seasonal variation in fish communities and assesses the influence of environmental parameters on the community structure of Lake Koca. A total of 1.530 specimens were captured, representing seven families and 11 species (2 non-native, 1 introduced, and 8 native species). Total fish abundance and richness were higher at the littoral than at the limnetic zone, but no seasonal variation was observed. Non-native fish species, Coptodon zillii, was the most abundant in the littoral zone, followed by species of Mugilidae. The abundance of the two endemic fish species (Capoeta aydinensis and Ladigesocypris irideus) was relatively low in both habitats. Shannon-Wiener diversity index and evenness did not vary seasonally and spatially. Fish abundance and richness were significantly and positively correlated with chlorophyll-a and macrophyte coverage while negatively correlated with depth. Spearmen’s Correlation analysis revealed that native fish species show a relationship with the chemical parameters of the water, while C. zillii showed a distribution related to depth and macrophyte density. Both anthropogenic activities and the presence of non-native fish may affect the distribution and abundance of endemic fishes.
{"title":"Fish diversity and community structure of a wetland system of the western Mediterranean Basin of Türkiye: Lake Koca (Dalaman)","authors":"Nehir Kaymak, Y. Emre, N. Emre, Ş. Akın","doi":"10.12714/egejfas.40.4.01","DOIUrl":"https://doi.org/10.12714/egejfas.40.4.01","url":null,"abstract":"Lake Koca (Dalaman), a wetland in the western Mediterranean basin of Türkiye, is an extraordinary lake with salty, fresh, and sulfurous waters and is home to high biodiversity. The present study examines the spatial and seasonal variation in fish communities and assesses the influence of environmental parameters on the community structure of Lake Koca. A total of 1.530 specimens were captured, representing seven families and 11 species (2 non-native, 1 introduced, and 8 native species). Total fish abundance and richness were higher at the littoral than at the limnetic zone, but no seasonal variation was observed. Non-native fish species, Coptodon zillii, was the most abundant in the littoral zone, followed by species of Mugilidae. The abundance of the two endemic fish species (Capoeta aydinensis and Ladigesocypris irideus) was relatively low in both habitats. Shannon-Wiener diversity index and evenness did not vary seasonally and spatially. Fish abundance and richness were significantly and positively correlated with chlorophyll-a and macrophyte coverage while negatively correlated with depth. Spearmen’s Correlation analysis revealed that native fish species show a relationship with the chemical parameters of the water, while C. zillii showed a distribution related to depth and macrophyte density. Both anthropogenic activities and the presence of non-native fish may affect the distribution and abundance of endemic fishes.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":"202 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138997135","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}
Pub Date : 2023-12-15DOI: 10.12714/egejfas.40.4.07
Duygu Turan, Özlem Çakal Arslan
Bisphenols (BPs) are produced for many applications for used in industry. BPs have been found all part of aquatic environments such as sediment and surface water that is poses a risk to the aquatic ecosystem. Restricting the use of BPA, environmental concentrations of bisphenol S, and bisphenol AF begin to increase. The present study aims to indicate that toxicity BPA and BPA analogues (BPS and BPAF) by algal growth inhibition test for the green algae Chlorella vulgaris, Spirulina sp., Desmodesmus subspicatus. In this way, result of this study present the nominal effective concentrations of BPA analogues and the suitability of the species for use as a biomarker in ecotoxicology tests. IC50 values (growth rate inhibition by 50%, respectively) for three toxicants were determined separately. Results of this study showed the effects of these chemicals on photosynthesis (primer production). The result of algal growth inhibition test showed that BPAF (72h EC50 3.80 mg/L) was found to be more toxic than BPS (3d EC50 6.31 m L-1) for Spirulina sp. BPS (3d EC50 2.43 mg/L) showed the most toxic effect on the growth of C. vulgaris, followed by BPAF with 3d EC50 3.32 mg/L. BPS (3d EC50 0.88 mg/L) and BPAF (3d EC50 6.48 mg/L) were found to be toxic for D. subspicatus, respectively, from highest to lowest toxicity. These results indicate that bisphenol analogues are hazardous to primer production. Therefore, it is necessary to study their combined effects as well as to study how they act individually.
生产双酚（BPs）的目的有很多，主要用于工业领域。在沉积物和地表水等水生环境中都发现了双酚，这对水生生态系统构成了威胁。限制双酚 A 的使用后，环境中双酚 S 和双酚 AF 的浓度开始增加。本研究旨在通过对绿藻 Chlorella vulgaris、Spirulina sp.和 Desmodesmus subspicatus 的藻类生长抑制试验，来说明双酚 A 和双酚 A 类似物（BPS 和 BPAF）的毒性。因此，本研究的结果表明了双酚 A 类似物的标称有效浓度以及该物种在生态毒理学试验中用作生物标记的适宜性。分别测定了三种毒物的 IC50 值（分别抑制生长率的 50%）。研究结果显示了这些化学物质对光合作用（引物生成）的影响。藻类生长抑制试验结果表明，双酚 AF（72 小时 EC50 3.80 mg/L）比双酚 BPS（3d EC50 6.31 m L-1）对螺旋藻的毒性更强；双酚 BPS（3d EC50 2.43 mg/L）对普通藻的生长毒性最大，其次是双酚 AF，3d EC50 为 3.32 mg/L。双酚 APS（3d EC50 为 0.88 毫克/升）和双酚 F（3d EC50 为 6.48 毫克/升）对 D. subspicatus 的毒性从高到低依次为：BPS（3d EC50 为 0.88 毫克/升）和 BPAF（3d EC50 为 6.48 毫克/升）。这些结果表明，双酚类似物对底漆生产有害。因此，有必要研究它们的综合效应以及它们各自的作用方式。
{"title":"Investigation of toxic effects of BPA and BPA analogues (BPS and BPAF) on Spirulina sp., Desmodesmus subspicatus and Chlorella vulgaris","authors":"Duygu Turan, Özlem Çakal Arslan","doi":"10.12714/egejfas.40.4.07","DOIUrl":"https://doi.org/10.12714/egejfas.40.4.07","url":null,"abstract":"Bisphenols (BPs) are produced for many applications for used in industry. BPs have been found all part of aquatic environments such as sediment and surface water that is poses a risk to the aquatic ecosystem. Restricting the use of BPA, environmental concentrations of bisphenol S, and bisphenol AF begin to increase. The present study aims to indicate that toxicity BPA and BPA analogues (BPS and BPAF) by algal growth inhibition test for the green algae Chlorella vulgaris, Spirulina sp., Desmodesmus subspicatus. In this way, result of this study present the nominal effective concentrations of BPA analogues and the suitability of the species for use as a biomarker in ecotoxicology tests. IC50 values (growth rate inhibition by 50%, respectively) for three toxicants were determined separately. Results of this study showed the effects of these chemicals on photosynthesis (primer production). The result of algal growth inhibition test showed that BPAF (72h EC50 3.80 mg/L) was found to be more toxic than BPS (3d EC50 6.31 m L-1) for Spirulina sp. BPS (3d EC50 2.43 mg/L) showed the most toxic effect on the growth of C. vulgaris, followed by BPAF with 3d EC50 3.32 mg/L. BPS (3d EC50 0.88 mg/L) and BPAF (3d EC50 6.48 mg/L) were found to be toxic for D. subspicatus, respectively, from highest to lowest toxicity. These results indicate that bisphenol analogues are hazardous to primer production. Therefore, it is necessary to study their combined effects as well as to study how they act individually.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":"197 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138997176","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}
Pub Date : 2023-12-15DOI: 10.12714/egejfas.40.4.02
N. Emre, N. Aydogdu, Ali Aydogdu, Özgür Emiroglu
The present study investigated diplozoid parasites in an endemic species, Capoeta aydinensis Turan, Küçük, Kaya, Güçlü & Bektaş, 2017 in Köyceğiz Lake, near Muğla province (Türkiye). The aim of this research is to improve a record of diplozoid species occurrence in C. aydinensis, an endemic fish species by collecting data from a previously unexplored locality situated in a different geographical region of Türkiye. A total of 187 individuals of C. aydinensis were collected by using fishing nets from October 2019 to July 2020 and examined for the presence of diplozoid species. Only one species of diplozoid has been recorded, known as Paradiplozoon bliccae (Reichenbach-Klinke, 1961), which has been identified morphologically and confirmed through molecular analysis. The nucleotide sequences of the parasite's nuclear internal transcribed spacer (ITS2) gene marker were determined as well as phylogenetic analyses by using Bayesian inference (BI) analyses. On the basis of the molecular findings, the morphological identification of the diplozoid parasite species was confirmed. Of 187 fish sampled, 27 were infected with 117 P. bliccae, representing an abundance of 0.6, a mean intensity of 4.3 and a prevalence of 14.4%. The prevalence and mean intensity of infection were based on the season and sex of the host. The highest values of infection for prevalence, mean intensity and abundance were found in summer. Meanwhile, mean intensity and abundance of P. bliccae were higher in males, the prevalence was higher in females. To our knowledge, the present study is the first ichthyoparasitological study of C. aydinensis in Köyceğiz lake, near the province of Muğla in Türkiye. Furthermore, sequence data of P. bliccae from fish hosts in this locality were reported to GenBank for the first time as part of this study. Therefore, this study widens the host range of this parasite species in Türkiye.
本研究调查了土耳其穆拉省（Türkiye）附近的Köyceğiz湖中一种特有物种Capoeta aydinensis Turan、Küçük、Kaya、Güçlü & Bektaş（2017年）的二裂藻寄生虫。本研究的目的是通过收集位于土耳其不同地理区域的一个以前未曾勘探过的地点的数据，改进对特有鱼种 C. aydinensis 中出现的二叠纪物种的记录。从2019年10月到2020年7月，使用渔网共采集了187条C. aydinensis，并对其进行了二叠类物种的检测。仅记录到一种二裂叶虫，即 Paradiplozoon bliccae（Reichenbach-Klinke，1961 年），已对其进行形态鉴定，并通过分子分析予以确认。通过贝叶斯推断（BI）分析，确定了寄生虫核内转录间隔（ITS2）基因标记的核苷酸序列并进行了系统发育分析。在分子研究结果的基础上，确认了二裂殖寄生虫的形态学鉴定。在取样的 187 条鱼中，27 条感染了 117 条 P. bliccae，感染量为 0.6，平均感染强度为 4.3，感染率为 14.4%。感染率和平均感染强度取决于季节和宿主的性别。感染率、平均强度和丰度的最高值出现在夏季。同时，男性的平均强度和丰度较高，而女性的感染率较高。据我们所知，本研究是首次对土耳其穆拉省附近 Köyceğiz 湖中的 C. aydinensis 进行鱼类寄生虫学研究。此外，作为本研究的一部分，首次向 GenBank 报告了该地区鱼类宿主中的 P. bliccae 的序列数据。因此，这项研究扩大了该寄生虫物种在土耳其的宿主范围。
{"title":"Investigations on Paradiplozoon bliccae (Reichenbach-Klinke, 1961) (Monogenea: Diplozoidae) found in Capoeta aydinensis, an endemic fish in Türkiye, based on ecological, molecular and host related factor approaches","authors":"N. Emre, N. Aydogdu, Ali Aydogdu, Özgür Emiroglu","doi":"10.12714/egejfas.40.4.02","DOIUrl":"https://doi.org/10.12714/egejfas.40.4.02","url":null,"abstract":"The present study investigated diplozoid parasites in an endemic species, Capoeta aydinensis Turan, Küçük, Kaya, Güçlü & Bektaş, 2017 in Köyceğiz Lake, near Muğla province (Türkiye). The aim of this research is to improve a record of diplozoid species occurrence in C. aydinensis, an endemic fish species by collecting data from a previously unexplored locality situated in a different geographical region of Türkiye. A total of 187 individuals of C. aydinensis were collected by using fishing nets from October 2019 to July 2020 and examined for the presence of diplozoid species. Only one species of diplozoid has been recorded, known as Paradiplozoon bliccae (Reichenbach-Klinke, 1961), which has been identified morphologically and confirmed through molecular analysis. The nucleotide sequences of the parasite's nuclear internal transcribed spacer (ITS2) gene marker were determined as well as phylogenetic analyses by using Bayesian inference (BI) analyses. On the basis of the molecular findings, the morphological identification of the diplozoid parasite species was confirmed. Of 187 fish sampled, 27 were infected with 117 P. bliccae, representing an abundance of 0.6, a mean intensity of 4.3 and a prevalence of 14.4%. The prevalence and mean intensity of infection were based on the season and sex of the host. The highest values of infection for prevalence, mean intensity and abundance were found in summer. Meanwhile, mean intensity and abundance of P. bliccae were higher in males, the prevalence was higher in females. To our knowledge, the present study is the first ichthyoparasitological study of C. aydinensis in Köyceğiz lake, near the province of Muğla in Türkiye. Furthermore, sequence data of P. bliccae from fish hosts in this locality were reported to GenBank for the first time as part of this study. Therefore, this study widens the host range of this parasite species in Türkiye.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":"29 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139000713","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}
Pub Date : 2023-12-15DOI: 10.12714/egejfas.40.4.04
S. M. Hinzano, M. M. Ngarari, M. Opiyo, Francis A. Okalo, B. Nyonje, David Midumbi, Derrick Gitari
The effects of feeding at different densities of Artemia nauplii on the growth and survival of Macrobrachium rude larvae were explored in this study. Two experiments were carried out. In the first trial, larvae were fed three different feeding densities: 1, 3, and 5 nauplii/mL. In the second experiment, feeding densities of 5, 10, and 15 nauplii/mL were used to determine the maximal feeding density of Artemia nauplii for M. rude larvae. There were no significant differences statistically in growth rate or survival between larvae fed 1, 3, or 5 nauplii/mL (P>0.05). Increased feeding density from 5 to 10 nauplii/mL resulted in growth but drastically decreased survival. Feeding above 10 nauplii/mL decreased both growth rate and survival. According to the results of the study, the optimal feeding density of M. rude with Artemia nauplii should be between 5 and 10 nauplii/mL. The study suggests further research into determining ideal feeding density at various phases of larval development in order to better understand the individual feeding requirements at each stage.
{"title":"Effects of feeding different densities of Artemia nauplii on the growth and survival of larvae of the hairy river prawn, Macrobrachium rude (Heller, 1862)","authors":"S. M. Hinzano, M. M. Ngarari, M. Opiyo, Francis A. Okalo, B. Nyonje, David Midumbi, Derrick Gitari","doi":"10.12714/egejfas.40.4.04","DOIUrl":"https://doi.org/10.12714/egejfas.40.4.04","url":null,"abstract":"The effects of feeding at different densities of Artemia nauplii on the growth and survival of Macrobrachium rude larvae were explored in this study. Two experiments were carried out. In the first trial, larvae were fed three different feeding densities: 1, 3, and 5 nauplii/mL. In the second experiment, feeding densities of 5, 10, and 15 nauplii/mL were used to determine the maximal feeding density of Artemia nauplii for M. rude larvae. There were no significant differences statistically in growth rate or survival between larvae fed 1, 3, or 5 nauplii/mL (P>0.05). Increased feeding density from 5 to 10 nauplii/mL resulted in growth but drastically decreased survival. Feeding above 10 nauplii/mL decreased both growth rate and survival. According to the results of the study, the optimal feeding density of M. rude with Artemia nauplii should be between 5 and 10 nauplii/mL. The study suggests further research into determining ideal feeding density at various phases of larval development in order to better understand the individual feeding requirements at each stage.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":"5 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139000288","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}
Pub Date : 2023-12-15DOI: 10.12714/egejfas.40.4.09
B. Öztürk, M. Recevik
In a benthic material taken from the Levantine coast of Türkiye, Epitonium aranea Bonfitto, 2018, a species previously known from the Red Sea only, and Stosicia annulata (Dunker, 1860) distributed in Japan Sea, Persian Gulf and Central and East Indian Ocean were recorded for the first time from the Mediterranean Sea. Along with two unknown species from the region, herein have also been dealing with Melanella sp., Oscilla virginiae Peñas, Rolán and Sabelli, 2020 and Zafra pumila (Dunker, 1860) which are poorly known species from the area, and some remarks of the taxonomy and distribution of the studied taxa are discussed.
{"title":"First record of alien gastropods Epitonium aranea Bonfitto, 2018 and Stosicia annulata (Dunker, 1860) (Mollusca) from the Mediterranean Sea","authors":"B. Öztürk, M. Recevik","doi":"10.12714/egejfas.40.4.09","DOIUrl":"https://doi.org/10.12714/egejfas.40.4.09","url":null,"abstract":"In a benthic material taken from the Levantine coast of Türkiye, Epitonium aranea Bonfitto, 2018, a species previously known from the Red Sea only, and Stosicia annulata (Dunker, 1860) distributed in Japan Sea, Persian Gulf and Central and East Indian Ocean were recorded for the first time from the Mediterranean Sea. Along with two unknown species from the region, herein have also been dealing with Melanella sp., Oscilla virginiae Peñas, Rolán and Sabelli, 2020 and Zafra pumila (Dunker, 1860) which are poorly known species from the area, and some remarks of the taxonomy and distribution of the studied taxa are discussed.","PeriodicalId":11439,"journal":{"name":"Ege Journal of Fisheries and Aquatic Sciences","volume":"16 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139001000","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}
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