Fanny Iriany Ginzel, D. Wijayanti, Subagiyo, A. Sabdono
Abstract Fringescale sardinella is one of the largest fishery resources and has the highest economic value in the Savu Sea. The increasing demand for this fish makes it one of the main fishing targets, which allows overfishing to occur. Therefore, the purpose of this study was to determine the population dynamics of sardinella fringescale through growth and mortality, recruitment and exploitation rate of fringescale sardinella in Rote Island in the Savu Sea. A total of 1095 fish sampled from Rote Island were assessed and showed the total length (TL) range from 90 mm to 157 mm. Further, the data were analyzed using FISAT II software with the following results: the length-weight relationship was W= 0.0004L2.2523, while the negative allometric growth pattern and growth equation was Lt = 165.26 (1 - exp1,500 (t + 0.0585)). The age of S. fimbriata consisted of 1-2 cohorts. Recruitment of S. fimbriata in Rote Island occurred throughout the year with the highest peaks in May and August. The size of the first caught fish (Lc) was 96.98 mm TL. The total mortality rate (Z) was 2.41 yr-1, natural mortality (M) was 1.45 yr-1 and fishing mortality (F) was 0.97 yr-1. The exploitation rate of S. fimbriata is estimated at 0.40 yr-1; this implies that the stock does not exceed the optimum exploitation rate (E = 0.5) or that overfishing has not occurred in the Savu Sea. Nevertheless, this study’s results are sufficiently robust to anticipate that the unprecedented overexploitation of S. fimbriata in Rote Island has nearly occurred. Therefore, regular monitoring and surveillance of surface gillnet fishing gear are urgently needed.
摘要鳞沙丁鱼是萨伏海最大的渔业资源之一，具有最高的经济价值。对这种鱼的需求不断增加，使其成为主要的捕鱼目标之一，从而导致过度捕捞的发生。因此，本研究的目的是通过萨伏海罗特岛边缘沙丁鱼的生长和死亡率、招募和开发率来确定边缘沙丁鱼的种群动态。对从Rote Island采集的1095条鱼进行了评估，显示总长度（TL）在90mm至157mm之间。此外，使用FISAT II软件对数据进行了分析，结果如下：长重关系为W=0.0004L2.2523，而负异速生长模式和生长方程为Lt=165.26（1-exp1500（t+0.0585））。罗特岛全年都有S.fimbriata的招募，最高峰出现在5月和8月。首次捕获的鱼的大小（Lc）为96.98 mm TL。总死亡率（Z）为2.41 yr-1，自然死亡率（M）为1.45 yr-1，捕捞死亡率（F）为0.97 yr-1。据估计，金伞藻的开发率为0.40年-1；这意味着种群没有超过最佳开采率（E=0.5），或者萨伏海没有发生过度捕捞。尽管如此，这项研究的结果足够有力，可以预测，罗特岛上的s.fimbriata几乎已经发生了前所未有的过度开发。因此，迫切需要对表面刺网渔具进行定期监测。
{"title":"Growth and Mortality, Recruitment and Exploitation Rate of Fringescale Sardinella Sardinella fimbriata (Valenciennes 1847) in Rote Island in the Savu Sea","authors":"Fanny Iriany Ginzel, D. Wijayanti, Subagiyo, A. Sabdono","doi":"10.2478/cjf-2022-0019","DOIUrl":"https://doi.org/10.2478/cjf-2022-0019","url":null,"abstract":"Abstract Fringescale sardinella is one of the largest fishery resources and has the highest economic value in the Savu Sea. The increasing demand for this fish makes it one of the main fishing targets, which allows overfishing to occur. Therefore, the purpose of this study was to determine the population dynamics of sardinella fringescale through growth and mortality, recruitment and exploitation rate of fringescale sardinella in Rote Island in the Savu Sea. A total of 1095 fish sampled from Rote Island were assessed and showed the total length (TL) range from 90 mm to 157 mm. Further, the data were analyzed using FISAT II software with the following results: the length-weight relationship was W= 0.0004L2.2523, while the negative allometric growth pattern and growth equation was Lt = 165.26 (1 - exp1,500 (t + 0.0585)). The age of S. fimbriata consisted of 1-2 cohorts. Recruitment of S. fimbriata in Rote Island occurred throughout the year with the highest peaks in May and August. The size of the first caught fish (Lc) was 96.98 mm TL. The total mortality rate (Z) was 2.41 yr-1, natural mortality (M) was 1.45 yr-1 and fishing mortality (F) was 0.97 yr-1. The exploitation rate of S. fimbriata is estimated at 0.40 yr-1; this implies that the stock does not exceed the optimum exploitation rate (E = 0.5) or that overfishing has not occurred in the Savu Sea. Nevertheless, this study’s results are sufficiently robust to anticipate that the unprecedented overexploitation of S. fimbriata in Rote Island has nearly occurred. Therefore, regular monitoring and surveillance of surface gillnet fishing gear are urgently needed.","PeriodicalId":38161,"journal":{"name":"Ribarstvo, Croatian Journal of Fisheries","volume":"80 1","pages":"189 - 196"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48561247","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}
Radojka Pajčin, R. Roljić, Z. Ružić, V. Nikolić, Z. Markovic, S. Paraš
Abstract Brown trout is a common type of fish grown for consumption in open and flowing fish ponds on the rivers of Bosnia and Herzegovina. We conducted this study during three seasons (spring, summer and autumn) to obtain a complete picture of the morphological and histological characteristics of selected trout tissues. The physicochemical characteristics of the water from the Pliva River near Pljeva and the fish pond where intensive breeding of trout is carried out were analyzed. These analyses have shown that there are no major deviations in water quality and that the water in the pond is of excellent quality. A total of 90 trout were harvested during all three seasons and their morphometric characteristics were determined by analyzing ten parameters. After the dissection of all individuals, histological and stereological analysis was performed to compare the tissues of the liver, stomach, gills and muscles. These analyses showed significant differences in the histoarchitecture of selected trout tissues from the pond compared to the river. Liver tissue had altered hepatocyte shape and presence of adipocytes; stomach tissue had stronger mucosa and weaker muscle layer; gill tissue had lower respiratory lamellae; while muscle tissue had a significant presence of adipose tissue in brown trout living in the fish pond compared to those in the river. All these changes are due to the quality of commercial feed and the inability to move freely.
{"title":"Comparative Analysis of Selected Tissues of Brown Trout from the Fish Pond and River Pliva, Bosnia and Herzegovina","authors":"Radojka Pajčin, R. Roljić, Z. Ružić, V. Nikolić, Z. Markovic, S. Paraš","doi":"10.2478/cjf-2022-0016","DOIUrl":"https://doi.org/10.2478/cjf-2022-0016","url":null,"abstract":"Abstract Brown trout is a common type of fish grown for consumption in open and flowing fish ponds on the rivers of Bosnia and Herzegovina. We conducted this study during three seasons (spring, summer and autumn) to obtain a complete picture of the morphological and histological characteristics of selected trout tissues. The physicochemical characteristics of the water from the Pliva River near Pljeva and the fish pond where intensive breeding of trout is carried out were analyzed. These analyses have shown that there are no major deviations in water quality and that the water in the pond is of excellent quality. A total of 90 trout were harvested during all three seasons and their morphometric characteristics were determined by analyzing ten parameters. After the dissection of all individuals, histological and stereological analysis was performed to compare the tissues of the liver, stomach, gills and muscles. These analyses showed significant differences in the histoarchitecture of selected trout tissues from the pond compared to the river. Liver tissue had altered hepatocyte shape and presence of adipocytes; stomach tissue had stronger mucosa and weaker muscle layer; gill tissue had lower respiratory lamellae; while muscle tissue had a significant presence of adipose tissue in brown trout living in the fish pond compared to those in the river. All these changes are due to the quality of commercial feed and the inability to move freely.","PeriodicalId":38161,"journal":{"name":"Ribarstvo, Croatian Journal of Fisheries","volume":"80 1","pages":"151 - 164"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48087262","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}
Abstract The present study assesses the carbon footprint of the only operating marine fish farm in Morocco. Five years of data were used to assess its carbon footprint, following ISO/TS 14067 standard, the PAS 2050 and the IPCC 2006 guidelines. The obtained carbon footprint ranged from 2.34 to 2.85 kg CO2e/kg. The emission value for 2017 is 38% lower than the highest value. Fish feed contributes most to the carbon footprint of the farm. Based on PAS 2050, the inshore cage farming product ranks in the same category as dairy products. Furthermore, the comparison showed that it is almost 67% lower than the carbon footprint of other protein production. This study evaluates some scenarios for reducing the carbon footprint of the fish farm, which can be a basis for further studies.
{"title":"Carbon Footprint Assessment of a Seabass Farm on the Mediterranean Moroccan Coast","authors":"Abdeljallil Bahida, Housni Chadli, H. Nhhala, Imane Nhhala, Miriam Wahbi, Hassan Erraioui","doi":"10.2478/cjf-2022-0017","DOIUrl":"https://doi.org/10.2478/cjf-2022-0017","url":null,"abstract":"Abstract The present study assesses the carbon footprint of the only operating marine fish farm in Morocco. Five years of data were used to assess its carbon footprint, following ISO/TS 14067 standard, the PAS 2050 and the IPCC 2006 guidelines. The obtained carbon footprint ranged from 2.34 to 2.85 kg CO2e/kg. The emission value for 2017 is 38% lower than the highest value. Fish feed contributes most to the carbon footprint of the farm. Based on PAS 2050, the inshore cage farming product ranks in the same category as dairy products. Furthermore, the comparison showed that it is almost 67% lower than the carbon footprint of other protein production. This study evaluates some scenarios for reducing the carbon footprint of the fish farm, which can be a basis for further studies.","PeriodicalId":38161,"journal":{"name":"Ribarstvo, Croatian Journal of Fisheries","volume":"80 1","pages":"165 - 178"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46461193","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}
R. Bhat, Concetta Saoca, F. Arfuso, Carmelo Pino, E. D’Alessandro, A. Zumbo, F. Fazio, O. Kesbiç
Abstract The purpose of this study was to examine various lipid classes as well as the protein content in rainbow trout ovaries. A total of 80 samples of Oncorhynchus mykiss (Walbaum 1792) were collected from Kokernag and Verinag hatcheries (Jammu and Kashmir, India) between 2017 and 2019. The mature stage in female fish had the highest gonadosomatic index (GSI) and minimal GSI in the spent stage. Higher lipid content of the ovary was reported during the mature stage (36%), as compared to other pre-breeding stages. Similarly, lipid classes also showed fluctuation during the development of the ovary. The lipid classes, i.e. glycolipids, free fatty acids, cholesterol and triglycerides, had a higher content in the mature stage, while the phospholipid content was higher in the mature stage. The protein content was also higher in the mature ovary than in the other developmental stages. The study provides reference values for various biochemical parameters in rainbow trout that could be useful for population monitoring programs and for the development of diets and management methods for fish production under controlled conditions.
{"title":"Lipid and Protein Content in Rainbow Trout in Relation to Gonadal Growth","authors":"R. Bhat, Concetta Saoca, F. Arfuso, Carmelo Pino, E. D’Alessandro, A. Zumbo, F. Fazio, O. Kesbiç","doi":"10.2478/cjf-2022-0020","DOIUrl":"https://doi.org/10.2478/cjf-2022-0020","url":null,"abstract":"Abstract The purpose of this study was to examine various lipid classes as well as the protein content in rainbow trout ovaries. A total of 80 samples of Oncorhynchus mykiss (Walbaum 1792) were collected from Kokernag and Verinag hatcheries (Jammu and Kashmir, India) between 2017 and 2019. The mature stage in female fish had the highest gonadosomatic index (GSI) and minimal GSI in the spent stage. Higher lipid content of the ovary was reported during the mature stage (36%), as compared to other pre-breeding stages. Similarly, lipid classes also showed fluctuation during the development of the ovary. The lipid classes, i.e. glycolipids, free fatty acids, cholesterol and triglycerides, had a higher content in the mature stage, while the phospholipid content was higher in the mature stage. The protein content was also higher in the mature ovary than in the other developmental stages. The study provides reference values for various biochemical parameters in rainbow trout that could be useful for population monitoring programs and for the development of diets and management methods for fish production under controlled conditions.","PeriodicalId":38161,"journal":{"name":"Ribarstvo, Croatian Journal of Fisheries","volume":"80 1","pages":"197 - 204"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41452843","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}
B. Kushwaha, D. Sarma, B. Mech, M. S. Kumar, V. Baisvar, A. Tiwari, H. Choudhury, Ravindra Kumar
Abstract North Eastern states of India are blessed with extensive ecoclimatic conditions and much of India’s endemic flora and fauna. This region is rich in fish diversity with plenty of species of ornamental importance, including model species zebrafish. Among the potential ornamental fishes, Ctenops nobilis is designated as Near Threatened and Danio dangila is included in the Least Concern list by IUCN. Cytogenetic profiling was undertaken here to provide complementary data for precise species identification and to study genetic inheritance, genome organization and evolution of the species. The cytogenetic analyses revealed diploid chromosome numbers 44 and 50 with karyotype formula 8m+20sm+10st+6t (FN=72) and 20m+24sm+6st (FN=94), respectively, in C. nobilis and D. dangila. The staining of nucleolar organizer regions revealed the presence of Ag-NORs, CMA3 sites and 18S rDNA probe signals on one pair sub-telocentric chromosome and one pair sub-metacentric chromosome in C. nobilis and D. dangila, respectively. These biomarkers are an important resource for molecular taxonomy, evolutionary/phylogenetic studies and conservation genetics of C. nobilis and D. dangila.
{"title":"Exploring Fish Miscellany from Biodiversity Hotspot Region of Northeast India Through Chromosome Profiling","authors":"B. Kushwaha, D. Sarma, B. Mech, M. S. Kumar, V. Baisvar, A. Tiwari, H. Choudhury, Ravindra Kumar","doi":"10.2478/cjf-2022-0018","DOIUrl":"https://doi.org/10.2478/cjf-2022-0018","url":null,"abstract":"Abstract North Eastern states of India are blessed with extensive ecoclimatic conditions and much of India’s endemic flora and fauna. This region is rich in fish diversity with plenty of species of ornamental importance, including model species zebrafish. Among the potential ornamental fishes, Ctenops nobilis is designated as Near Threatened and Danio dangila is included in the Least Concern list by IUCN. Cytogenetic profiling was undertaken here to provide complementary data for precise species identification and to study genetic inheritance, genome organization and evolution of the species. The cytogenetic analyses revealed diploid chromosome numbers 44 and 50 with karyotype formula 8m+20sm+10st+6t (FN=72) and 20m+24sm+6st (FN=94), respectively, in C. nobilis and D. dangila. The staining of nucleolar organizer regions revealed the presence of Ag-NORs, CMA3 sites and 18S rDNA probe signals on one pair sub-telocentric chromosome and one pair sub-metacentric chromosome in C. nobilis and D. dangila, respectively. These biomarkers are an important resource for molecular taxonomy, evolutionary/phylogenetic studies and conservation genetics of C. nobilis and D. dangila.","PeriodicalId":38161,"journal":{"name":"Ribarstvo, Croatian Journal of Fisheries","volume":"80 1","pages":"179 - 188"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49050831","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}
Abstract The population structure and genetic variability of North African catfish Clarias gariepinus (Burchell 1822) were investigated using partial mitochondrial DNA cytochrome b region sequences. Fifty-four (54) samples were investigated from three geographically isolated rivers in Nigeria. The analysis of 53 haplotypes revealed greater haplotype diversity (0.99930) and nucleotide diversity (p) (0.07270). According to an analysis of molecular variance (AMOVA), the genetic diversity of North African catfish within populations is significantly higher than the genetic diversity across populations. The FST scores (0.75000, 0.94792 and 0.95699) indicated that North African catfish populations in three Nigerian freshwater bodies had a strong genetic structure. The phylogenetic reconstruction of unique haplotypes revealed the placement of a haplotype (Ogbese) linked by others from all three groups with a point mutation ranging from 1 to 24 nucleotides. North African catfish populations in the Asejire and Ureje are genetically diverse, as evidenced by a high level of haplotype diversity of 1.0000, low nucleotide diversity spanning from 0.05101 to 0.07889, and high FST values (within-population genetic variation). The common haplotypes between some populations and mixes of haplotypes from different populations within the same genetic cluster demonstrate that the population genetic structure is not distinct.
{"title":"Genetic Differentiation and Molecular Phylogenetics of North African Catfish from Three Distinct Waterbodies","authors":"O. Popoola","doi":"10.2478/cjf-2022-0013","DOIUrl":"https://doi.org/10.2478/cjf-2022-0013","url":null,"abstract":"Abstract The population structure and genetic variability of North African catfish Clarias gariepinus (Burchell 1822) were investigated using partial mitochondrial DNA cytochrome b region sequences. Fifty-four (54) samples were investigated from three geographically isolated rivers in Nigeria. The analysis of 53 haplotypes revealed greater haplotype diversity (0.99930) and nucleotide diversity (p) (0.07270). According to an analysis of molecular variance (AMOVA), the genetic diversity of North African catfish within populations is significantly higher than the genetic diversity across populations. The FST scores (0.75000, 0.94792 and 0.95699) indicated that North African catfish populations in three Nigerian freshwater bodies had a strong genetic structure. The phylogenetic reconstruction of unique haplotypes revealed the placement of a haplotype (Ogbese) linked by others from all three groups with a point mutation ranging from 1 to 24 nucleotides. North African catfish populations in the Asejire and Ureje are genetically diverse, as evidenced by a high level of haplotype diversity of 1.0000, low nucleotide diversity spanning from 0.05101 to 0.07889, and high FST values (within-population genetic variation). The common haplotypes between some populations and mixes of haplotypes from different populations within the same genetic cluster demonstrate that the population genetic structure is not distinct.","PeriodicalId":38161,"journal":{"name":"Ribarstvo, Croatian Journal of Fisheries","volume":"80 1","pages":"123 - 132"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46280987","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}
S. Andrabi, Yahya Bakhtiyar, M. Parveen, M. Y. Arafat
Abstract Diversity, abundance and distribution pattern of the fish fauna are important aspects that need to be considered in order to frame the conservation and management strategies in any water body. To assess the composition, diversity and relative abundance of the fish fauna in the Manasbal Lake of Kashmir, the present study was carried out for two years (March 2018 - February 2020). A total of 22522 fish specimens were netted out during the sampling period, and the relative abundance and various diversity indices were used to assess the overall diversity of the inhabiting fish fauna. A total of 7 species belonging to two families, Cyprinidae and Poeciliidae, were reported, of which the family Cyprinidae was dominant in the catch. The relative abundance and diversity of the fish fauna showed spatio-temporal variation wherein Pethia conchonius was most abundant during spring and winter, while Gambusia holbrooki was most abundant during summer and autumn. Cyprinus carpio was found to be abundant during all the seasons at Site II and Site III as compared to native cyprinids, Schizothorax niger and S. curvifrons. The current study also indicated a good fish diversity in the lake which varies on spatio-temporal scales, showing maximum diversity during winter (Hʹ =1.498) and minimum diversity during summer (Hʹ = 1.247), while Site II showed maximum diversity (Hʹ =1.369) and Site I showed minimum diversity (Hʹ =1.085). Overall lake possesses good fish diversity that could be a great source of income for the local populace provided the fish assemblages are sustainably managed.
{"title":"Diversity and Relative Abundance of Ichthyofauna in Manasbal Lake of the Kashmir Himalayas, India","authors":"S. Andrabi, Yahya Bakhtiyar, M. Parveen, M. Y. Arafat","doi":"10.2478/cjf-2022-0012","DOIUrl":"https://doi.org/10.2478/cjf-2022-0012","url":null,"abstract":"Abstract Diversity, abundance and distribution pattern of the fish fauna are important aspects that need to be considered in order to frame the conservation and management strategies in any water body. To assess the composition, diversity and relative abundance of the fish fauna in the Manasbal Lake of Kashmir, the present study was carried out for two years (March 2018 - February 2020). A total of 22522 fish specimens were netted out during the sampling period, and the relative abundance and various diversity indices were used to assess the overall diversity of the inhabiting fish fauna. A total of 7 species belonging to two families, Cyprinidae and Poeciliidae, were reported, of which the family Cyprinidae was dominant in the catch. The relative abundance and diversity of the fish fauna showed spatio-temporal variation wherein Pethia conchonius was most abundant during spring and winter, while Gambusia holbrooki was most abundant during summer and autumn. Cyprinus carpio was found to be abundant during all the seasons at Site II and Site III as compared to native cyprinids, Schizothorax niger and S. curvifrons. The current study also indicated a good fish diversity in the lake which varies on spatio-temporal scales, showing maximum diversity during winter (Hʹ =1.498) and minimum diversity during summer (Hʹ = 1.247), while Site II showed maximum diversity (Hʹ =1.369) and Site I showed minimum diversity (Hʹ =1.085). Overall lake possesses good fish diversity that could be a great source of income for the local populace provided the fish assemblages are sustainably managed.","PeriodicalId":38161,"journal":{"name":"Ribarstvo, Croatian Journal of Fisheries","volume":"80 1","pages":"113 - 122"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45521209","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}
K. Kuri, M. Sokolović, Krešimir Drašner, Juraj Petravić, Margarita Maruškić Kulaš, G. Jakšić
Abstract This study presents data on regular health monitoring of fish in the Aquatika – Freshwater Aquarium Karlovac between October 2016 and December 2019. The Aquatika Aquarium houses 85 different freshwater fish species, 31 of which are endemic in Croatia. The study included an evaluation of the results of the aquarium health monitoring programme. It determined the most common fish diseases in the aquarium (at the species and individual levels) and determined whether endemic or non-endemic freshwater fish are more susceptible to diseases and disorders. The regular health monitoring programme revealed different diseases and disorders in endemic and non-endemic fish. During the monitoring, 3104 fish specimens were analysed. The most frequent disease was ichthyophthiriasis which occurred at a similar frequency in endemic and non-endemic fish species. The results proved to be valuable for the evaluation of risks and measures to minimise the risk of the introduction and spread of pathogens in the aquarium. Preventive fish medicine is extremely important for effective aquarium management. A comprehensive health monitoring programme, including quarantine systems, control of feed and environmental parameters, along with regular fish observation, are critical for the early detection of fish diseases.
{"title":"Health Management of Endemic and Non-Endemic Fish in the Aquatika – Freshwater Aquarium Karlovac","authors":"K. Kuri, M. Sokolović, Krešimir Drašner, Juraj Petravić, Margarita Maruškić Kulaš, G. Jakšić","doi":"10.2478/cjf-2022-0015","DOIUrl":"https://doi.org/10.2478/cjf-2022-0015","url":null,"abstract":"Abstract This study presents data on regular health monitoring of fish in the Aquatika – Freshwater Aquarium Karlovac between October 2016 and December 2019. The Aquatika Aquarium houses 85 different freshwater fish species, 31 of which are endemic in Croatia. The study included an evaluation of the results of the aquarium health monitoring programme. It determined the most common fish diseases in the aquarium (at the species and individual levels) and determined whether endemic or non-endemic freshwater fish are more susceptible to diseases and disorders. The regular health monitoring programme revealed different diseases and disorders in endemic and non-endemic fish. During the monitoring, 3104 fish specimens were analysed. The most frequent disease was ichthyophthiriasis which occurred at a similar frequency in endemic and non-endemic fish species. The results proved to be valuable for the evaluation of risks and measures to minimise the risk of the introduction and spread of pathogens in the aquarium. Preventive fish medicine is extremely important for effective aquarium management. A comprehensive health monitoring programme, including quarantine systems, control of feed and environmental parameters, along with regular fish observation, are critical for the early detection of fish diseases.","PeriodicalId":38161,"journal":{"name":"Ribarstvo, Croatian Journal of Fisheries","volume":"80 1","pages":"141 - 150"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47109649","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}
Sadia Afrin Kamal, Md. Nur Alam Chad, Jakir Hossain, Afshana Ferdous, R. Jahan
Abstract Fish availability in the coastal landing center highlights the assumption of stocks in the marine fishing zone of the ocean. This study, therefore, aimed to analyze the availability of marine fishes in the Bangladesh Fisheries Development Corporation (BFDC) landing center, Cox’s Bazar, Bangladesh between January 2021 and May 2021. A total of 54 species were recorded, of which 42 were marine fishes, 7 were shellfishes and 5 were large fishes. The dominant orders were Perciformes (56%), Scombriformes (17%) and Clupeiformes (10%). More than 56% of the total marine fishes were classified as Least Concern, nearly 10% were categorized as Near Threatened and 2% were marked Vulnerable. The dominant orders of shellfish were Portunidae (43%), followed by Penaidae (29%), Loligonidae (14%) and Octopopidae (14%). Shrimp Penaeous monodon had the highest consumer demand, whereas consumer demand for non-conventional shellfish was comparatively low. Most of the shellfish were categorized as Least Concern. Among large fishes, the wider availability of sharks (five species) and rays (two species) was observed in the winter and monsoon season, although the consumer demand for those large fishes was low. The Vulnerable sharks and rays were Sphyma zygaena and Mobula birostris. This study elucidates the present scenario of marine fishes in the BFDC fish landing center, Cox’s Bazar, Bangladesh.
{"title":"Availability of Marine Fishes in Cox’s Bazar, Bangladesh: A Case Study on the BFDC Landing Center","authors":"Sadia Afrin Kamal, Md. Nur Alam Chad, Jakir Hossain, Afshana Ferdous, R. Jahan","doi":"10.2478/cjf-2022-0014","DOIUrl":"https://doi.org/10.2478/cjf-2022-0014","url":null,"abstract":"Abstract Fish availability in the coastal landing center highlights the assumption of stocks in the marine fishing zone of the ocean. This study, therefore, aimed to analyze the availability of marine fishes in the Bangladesh Fisheries Development Corporation (BFDC) landing center, Cox’s Bazar, Bangladesh between January 2021 and May 2021. A total of 54 species were recorded, of which 42 were marine fishes, 7 were shellfishes and 5 were large fishes. The dominant orders were Perciformes (56%), Scombriformes (17%) and Clupeiformes (10%). More than 56% of the total marine fishes were classified as Least Concern, nearly 10% were categorized as Near Threatened and 2% were marked Vulnerable. The dominant orders of shellfish were Portunidae (43%), followed by Penaidae (29%), Loligonidae (14%) and Octopopidae (14%). Shrimp Penaeous monodon had the highest consumer demand, whereas consumer demand for non-conventional shellfish was comparatively low. Most of the shellfish were categorized as Least Concern. Among large fishes, the wider availability of sharks (five species) and rays (two species) was observed in the winter and monsoon season, although the consumer demand for those large fishes was low. The Vulnerable sharks and rays were Sphyma zygaena and Mobula birostris. This study elucidates the present scenario of marine fishes in the BFDC fish landing center, Cox’s Bazar, Bangladesh.","PeriodicalId":38161,"journal":{"name":"Ribarstvo, Croatian Journal of Fisheries","volume":"80 1","pages":"133 - 140"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46711435","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}
Abstract Bilateral asymmetry is presumed to reveal the developmental variability of the fish in polluted aquatic environments. In these habitats, high-level asymmetry develops, and these fish expend more energy to balance their growth than fish that are not under an impact. A total of 121 specimens of Pampus argenteus were collected from Khor Abdulla located in the northwest part of the Arabian Gulf. The asymmetry of two otolith parameters of the marine fish species Pampus argenteus, length and width, was calculated. The results demonstrated that the level of asymmetry was highest for otolith width. The level of asymmetry in both otolith parameters was lowest in fish length ranging between 70-100 mm and the highest in fish ranging between 281-310 mm.
{"title":"Bilateral Asymmetry in Otolith Size of Pampus argenteus (Osteichthyes: Stromatidae) from Iraqi Marine Waters","authors":"Audai M. Qasim, L. Jawad, B. Waryani","doi":"10.2478/cjf-2022-0011","DOIUrl":"https://doi.org/10.2478/cjf-2022-0011","url":null,"abstract":"Abstract Bilateral asymmetry is presumed to reveal the developmental variability of the fish in polluted aquatic environments. In these habitats, high-level asymmetry develops, and these fish expend more energy to balance their growth than fish that are not under an impact. A total of 121 specimens of Pampus argenteus were collected from Khor Abdulla located in the northwest part of the Arabian Gulf. The asymmetry of two otolith parameters of the marine fish species Pampus argenteus, length and width, was calculated. The results demonstrated that the level of asymmetry was highest for otolith width. The level of asymmetry in both otolith parameters was lowest in fish length ranging between 70-100 mm and the highest in fish ranging between 281-310 mm.","PeriodicalId":38161,"journal":{"name":"Ribarstvo, Croatian Journal of Fisheries","volume":"80 1","pages":"103 - 112"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41719266","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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