{"title":"The Use of Pine Apple Juice in the Elimination of Egg Stickiness in Catfish (Clarias gariepinus), Reared in a Hatchery, Sebeta, Ethiopia","authors":"","doi":"10.31038/afs.2024611","DOIUrl":"https://doi.org/10.31038/afs.2024611","url":null,"abstract":"","PeriodicalId":262559,"journal":{"name":"Aquaculture and Fisheries Studies","volume":"49 S238","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140694832","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}
The main bio-economic indicators of a pelagic fishery of the Northern Gulf of México (the Gulf Menhaden Brevoortia patronus Goode), was examined to understand their 8 performance as a result of simulated trials of the age of first catch and the fishing mortality. First, the validity of simulation was tested rebuilding numerically the performance of biological data and catch over time. A simple approach was made assigning economic value to the catch per-kg and the cost of fishing, so the output of biological variables could be linked to their corresponding economic performance, under the dynamics of the exploited stock, before adding value to the catch. As a part of results, the historical trend of a declining yield, suggests that the fishery has been over exploiting the juveniles, and even tough this condition has been sustained for more than forty years, this process produces nearly 400 thousand t, while it could yield more than one million t if it exploits only adult fish. On testing the economic indicators of the stock response as effect of the age of first catch, it is evident that the current yield is well below the Maximum Sustainable Yield, which might be higher if only adult fish are the targets of the fishery. The same occurs with the Maximum Economic Yield. The Benefit/Cost displays an inverse relationship with the Cost per t. It was found that the fishery could profit more than three hundred million USD if the age of first catch is re-addressed to get only adults as fisheries target. It is clear that this approach could be adopted as useful tool for decision-making and fisheries management.
{"title":"Stock Effect of Bio-Economic Indicators in an Over- exploited Fishery of the Gulf of Mexico","authors":"Ernesto A. Chávez, A. Chávez-Hidalgo","doi":"10.31038/afs.2023513","DOIUrl":"https://doi.org/10.31038/afs.2023513","url":null,"abstract":"The main bio-economic indicators of a pelagic fishery of the Northern Gulf of México (the Gulf Menhaden Brevoortia patronus Goode), was examined to understand their 8 performance as a result of simulated trials of the age of first catch and the fishing mortality. First, the validity of simulation was tested rebuilding numerically the performance of biological data and catch over time. A simple approach was made assigning economic value to the catch per-kg and the cost of fishing, so the output of biological variables could be linked to their corresponding economic performance, under the dynamics of the exploited stock, before adding value to the catch. As a part of results, the historical trend of a declining yield, suggests that the fishery has been over exploiting the juveniles, and even tough this condition has been sustained for more than forty years, this process produces nearly 400 thousand t, while it could yield more than one million t if it exploits only adult fish. On testing the economic indicators of the stock response as effect of the age of first catch, it is evident that the current yield is well below the Maximum Sustainable Yield, which might be higher if only adult fish are the targets of the fishery. The same occurs with the Maximum Economic Yield. The Benefit/Cost displays an inverse relationship with the Cost per t. It was found that the fishery could profit more than three hundred million USD if the age of first catch is re-addressed to get only adults as fisheries target. It is clear that this approach could be adopted as useful tool for decision-making and fisheries management.","PeriodicalId":262559,"journal":{"name":"Aquaculture and Fisheries Studies","volume":"374 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120880918","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}
Breanne Yachiyo Hanson, K. Chung, E. Pisarski, M. DeLorenzo
coastal counties
沿海县
{"title":"Effect of Bifenthrin and Reduced Salinity Exposure on Larval Sheepshead Minnows (Cyprinodon variegatus) and Grass Shrimp (Palaemon pugio)","authors":"Breanne Yachiyo Hanson, K. Chung, E. Pisarski, M. DeLorenzo","doi":"10.31038/afs.2022453","DOIUrl":"https://doi.org/10.31038/afs.2022453","url":null,"abstract":"coastal counties","PeriodicalId":262559,"journal":{"name":"Aquaculture and Fisheries Studies","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123509335","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}
{"title":"Influence of Phosphorus Fertilizer Rates on Grain Yield and Economic Benefits of Sorghum (Sorghum bicolor L.) in Case of Kersa District, South Western Ethiopia","authors":"","doi":"10.31038/afs.2022451","DOIUrl":"https://doi.org/10.31038/afs.2022451","url":null,"abstract":"","PeriodicalId":262559,"journal":{"name":"Aquaculture and Fisheries Studies","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131334512","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}
{"title":"Effects of Photoenhanced Thin Oil Sheens on Survival and Growth of Newly Hatched Fishes: Sheepshead Minnow (Cyprinodon variegatus), spotted seatrout (Cynoscion nebulosus), and Red Drum (Sciaenops ocellatus)","authors":"","doi":"10.31038/afs.2022444","DOIUrl":"https://doi.org/10.31038/afs.2022444","url":null,"abstract":"","PeriodicalId":262559,"journal":{"name":"Aquaculture and Fisheries Studies","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133582842","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}
Genetic variability studies provide basic information concerning genetic properties of population following which breeding methods could be formulated for future improvement of the crop. Components of genetic parameters such as genotypic coefficient of variation and phenotypic coefficient of variation have an immense importance in detecting the amount of genetic variation exist in the genotypes. Genetic variability study for agronomic traits is a key component of the breeding program for boarding the genetic pool of crop. Once genetic variability of certain crops has been successfully determined crop improvement is easy through the use of appropriate selection methods on yield components hence they are easily inherited than total yield itself. Thus, in this review, studies of genetic variability of chickpea have discussed to help different researchers on their variability studies by providing some important information that will help chickpea improvements.
{"title":"Review on Studies on Genetic Variability of Chickpea (Cicer arietinum L.) Genotypes for Future Breeding Program in Ethiopia","authors":"Garedo Tesfa, Berhanu Sime","doi":"10.31038/afs.2022443","DOIUrl":"https://doi.org/10.31038/afs.2022443","url":null,"abstract":"Genetic variability studies provide basic information concerning genetic properties of population following which breeding methods could be formulated for future improvement of the crop. Components of genetic parameters such as genotypic coefficient of variation and phenotypic coefficient of variation have an immense importance in detecting the amount of genetic variation exist in the genotypes. Genetic variability study for agronomic traits is a key component of the breeding program for boarding the genetic pool of crop. Once genetic variability of certain crops has been successfully determined crop improvement is easy through the use of appropriate selection methods on yield components hence they are easily inherited than total yield itself. Thus, in this review, studies of genetic variability of chickpea have discussed to help different researchers on their variability studies by providing some important information that will help chickpea improvements.","PeriodicalId":262559,"journal":{"name":"Aquaculture and Fisheries Studies","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125153653","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}
{"title":"Effects of African Walnut (Tetracarpidium conophorum) Leaf Powder on Growth Performance and Histopathology of African Catfish (Clarias gariepiuns)","authors":"","doi":"10.31038/afs.2022442","DOIUrl":"https://doi.org/10.31038/afs.2022442","url":null,"abstract":"","PeriodicalId":262559,"journal":{"name":"Aquaculture and Fisheries Studies","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115245729","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}
{"title":"Investigating Feeding Regimen of Brown Trout (Salmo Trutta Fario) in Tonekabon River, Northern Iran","authors":"Mehran Moslemi, Mohamadreza Ahmadi, Ali Barzegar","doi":"10.31038/afs.2022441","DOIUrl":"https://doi.org/10.31038/afs.2022441","url":null,"abstract":",","PeriodicalId":262559,"journal":{"name":"Aquaculture and Fisheries Studies","volume":"190 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131641668","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}
Soil fertility is among the most important constraints that threaten sorghum production in Jimma Zone in Oromia Region. a field experiment was carried out at Kersa woreda for four consecutive cropping seasons from 2013/14 to 2016/17 to evaluate the response of various levels of nitrogen (N) and phosphorus (P) fertilizer using sorghum. The treatments consisted of factorial combinations of four rates each of N (0, 23, 46 and 69 kg N ha −1 ) and P (0, 11.5, 23 and 34.5 kg P 2 O 5 ha −1 ) laid down in a randomized complete block design (RCBD) with three replications. For data analysis, correlation coefficient and ANOVA were used. The result showed that the yield and yield components of the sorghum crop were highly significant response to impacts of inorganic N-P fertilizer nutrients. Parameters, such as, plant height, head weight, grain yield, biomass yield and stover yield, were statistically significantly different by nitrogen and phosphorus different fertilizer rates. Also, these parameters were significant and positive correlation to each other. This result revealed that the highest (4.14 t/ha) grain yield was obtained from 69 kgh -1 N and 23 kgha -1 P 2 O 5 inorganic fertilizer, whereas the lowest (1.37 t/ha) grain yield was recorded from control treatment. Compared to the control treatment, the highest rate of N/P (69/23 kg ha -1 ) increased sorghum grain yield by about 202.2%. It is concluded that nitrogen and phosphorus at the rate of 69 kgh -1 N and 23 kgha -1 P 2 O 5 has the best performance in obtaining maximum grain yield of sorghum crop. Therefore, N-P at the rate of 69 kgh -1 N and 23 kgha -1 P 2 O 5 is highly recommended for optimum grain yield of sorghum crop in the study area.
土壤肥力是威胁奥罗米亚地区Jimma地区高粱生产的最重要制约因素之一。本试验于2013/14 ~ 2016/17连续4个种植季在克尔萨沃雷达进行，评价不同水平氮磷肥对高粱的响应。处理采用随机完全区组设计(RCBD)，采用3个重复，N(0、23、46和69 kg N ha - 1)和P(0、11.5、23和34.5 kg P 2o - 1) 4个因子组合。数据分析采用相关系数和方差分析。结果表明，无机氮磷肥料对高粱作物的产量和产量构成有极显著的影响。不同施氮、施磷量对株高、穗重、籽粒产量、生物量产量和秸秆产量的影响均有显著统计学差异。这些参数之间呈显著正相关。结果表明，69 kgha -1 N和23 kgha -1 p2o - 5无机肥处理籽粒产量最高(4.14 t/ha)，而对照处理籽粒产量最低(1.37 t/ha)。与对照处理相比，施氮磷最高处理(69/23 kg ha -1)可使高粱籽粒产量提高约202.2%。综上所述，以69 kgha -1 N和23 kgha -1 p2o - 5的施氮磷量对高粱籽粒产量最有利。因此，推荐以69 kgha -1 N + 23 kgha -1 p2o - 5的施氮量为研究区高粱的最优产量。
{"title":"Effect of Nitrogen and Phosphorus Fertilizer Rates on Yield and Yield Components Sorghum (Sorghum bicolor L. Moench) at Kersa Woreda of Oromia Region","authors":"G. Hailu, M. Kedir","doi":"10.31038/afs.2022434","DOIUrl":"https://doi.org/10.31038/afs.2022434","url":null,"abstract":"Soil fertility is among the most important constraints that threaten sorghum production in Jimma Zone in Oromia Region. a field experiment was carried out at Kersa woreda for four consecutive cropping seasons from 2013/14 to 2016/17 to evaluate the response of various levels of nitrogen (N) and phosphorus (P) fertilizer using sorghum. The treatments consisted of factorial combinations of four rates each of N (0, 23, 46 and 69 kg N ha −1 ) and P (0, 11.5, 23 and 34.5 kg P 2 O 5 ha −1 ) laid down in a randomized complete block design (RCBD) with three replications. For data analysis, correlation coefficient and ANOVA were used. The result showed that the yield and yield components of the sorghum crop were highly significant response to impacts of inorganic N-P fertilizer nutrients. Parameters, such as, plant height, head weight, grain yield, biomass yield and stover yield, were statistically significantly different by nitrogen and phosphorus different fertilizer rates. Also, these parameters were significant and positive correlation to each other. This result revealed that the highest (4.14 t/ha) grain yield was obtained from 69 kgh -1 N and 23 kgha -1 P 2 O 5 inorganic fertilizer, whereas the lowest (1.37 t/ha) grain yield was recorded from control treatment. Compared to the control treatment, the highest rate of N/P (69/23 kg ha -1 ) increased sorghum grain yield by about 202.2%. It is concluded that nitrogen and phosphorus at the rate of 69 kgh -1 N and 23 kgha -1 P 2 O 5 has the best performance in obtaining maximum grain yield of sorghum crop. Therefore, N-P at the rate of 69 kgh -1 N and 23 kgha -1 P 2 O 5 is highly recommended for optimum grain yield of sorghum crop in the study area.","PeriodicalId":262559,"journal":{"name":"Aquaculture and Fisheries Studies","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127066001","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}
The Giant freshwater prawn, Macrobrachium rosenbergii (De Man, 1879), commonly known as Scampi, is one of the most important freshwater prawn species widely cultured in several tropical and sub-tropical countries around the world. It has several attractive attributes as a candidate species viz., fast growth rate, compatibility to grow under poly-/mixed-culture, hardy nature, high market price and demand in both domestic and export markets. Besides, it can also be cultured in low saline brackish water areas (salinity < 10 ppt). It is an indigenous species of India and is naturally occurring in most of the river systems along both coasts of India. It can be cultured alone or with compatible fish species such as Catla ( Catla catla ) and Rohu ( Labeo rohita ). It is also a suitable species for incorporating in paddy-cum-fish culture (rice-prawn farming) system. Culture of Scampi can be carried out in tanks and
罗氏沼虾(Macrobrachium rosenbergii, De Man, 1879)，俗称虾，是世界上一些热带和亚热带国家广泛养殖的最重要的淡水对虾品种之一。它具有生长速度快、适合多/混合栽培、耐寒性强、市场价格高、国内外市场需求大等优点。此外，它也可以在低盐半咸水地区(盐度< 10 ppt)培养。它是印度的本土物种，自然出现在印度两岸的大多数河流系统中。它可以单独养殖或与兼容的鱼类，如Catla (Catla)和Rohu (Labeo rohita)。它也是稻鱼结合养殖(稻对虾养殖)系统的适宜品种。虾的培养可以在鱼缸里进行
{"title":"Breeding and Culture of Macrobrachium rosenbergii; Giant Freshwater Prawn (Scampi), Practiced along the Coast of Kerala, India","authors":"VS Ajay","doi":"10.31038/afs.2022432","DOIUrl":"https://doi.org/10.31038/afs.2022432","url":null,"abstract":"The Giant freshwater prawn, Macrobrachium rosenbergii (De Man, 1879), commonly known as Scampi, is one of the most important freshwater prawn species widely cultured in several tropical and sub-tropical countries around the world. It has several attractive attributes as a candidate species viz., fast growth rate, compatibility to grow under poly-/mixed-culture, hardy nature, high market price and demand in both domestic and export markets. Besides, it can also be cultured in low saline brackish water areas (salinity < 10 ppt). It is an indigenous species of India and is naturally occurring in most of the river systems along both coasts of India. It can be cultured alone or with compatible fish species such as Catla ( Catla catla ) and Rohu ( Labeo rohita ). It is also a suitable species for incorporating in paddy-cum-fish culture (rice-prawn farming) system. Culture of Scampi can be carried out in tanks and","PeriodicalId":262559,"journal":{"name":"Aquaculture and Fisheries Studies","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124537943","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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