Aquaculture and Fisheries Studies最新文献

The Use of Pine Apple Juice in the Elimination of Egg Stickiness in Catfish (Clarias gariepinus), Reared in a Hatchery, Sebeta, Ethiopia 使用松苹果汁消除埃塞俄比亚塞贝塔孵化场饲养的鲶鱼（Claras gariepinus）的粘卵现象

Aquaculture and Fisheries Studies Pub Date : 2024-04-16 DOI: 10.31038/afs.2024611

引用次数: 0

Stock Effect of Bio-Economic Indicators in an Over- exploited Fishery of the Gulf of Mexico 墨西哥湾过度开发渔业生物经济指标的种群效应

Aquaculture and Fisheries Studies Pub Date : 2023-03-15 DOI: 10.31038/afs.2023513

Ernesto A. Chávez, A. Chávez-Hidalgo

{"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}

引用次数: 0

Effect of Bifenthrin and Reduced Salinity Exposure on Larval Sheepshead Minnows (Cyprinodon variegatus) and Grass Shrimp (Palaemon pugio) 联苯菊酯和降盐对羊头鲦鱼(Cyprinodon variegatus)和草虾(Palaemon pugio)幼虫的影响

Aquaculture and Fisheries Studies Pub Date : 2022-11-17 DOI: 10.31038/afs.2022453

Breanne Yachiyo Hanson, K. Chung, E. Pisarski, M. DeLorenzo

引用次数: 0

Influence of Phosphorus Fertilizer Rates on Grain Yield and Economic Benefits of Sorghum (Sorghum bicolor L.) in Case of Kersa District, South Western Ethiopia 施磷量对高粱产量和经济效益的影响——以埃塞俄比亚西南部克尔萨地区为例

Aquaculture and Fisheries Studies Pub Date : 2022-10-28 DOI: 10.31038/afs.2022451

引用次数: 0

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) 光增强薄油膜对新孵化鱼类羊头鲦鱼(Cyprinodon variegatus)、斑点鱼(Cynoscion nebulosus)和红颡鱼(Sciaenops ocellatus)存活和生长的影响

Aquaculture and Fisheries Studies Pub Date : 2022-10-18 DOI: 10.31038/afs.2022444

引用次数: 0

Review on Studies on Genetic Variability of Chickpea (Cicer arietinum L.) Genotypes for Future Breeding Program in Ethiopia 鹰嘴豆(Cicer arietinum L.)遗传变异研究进展埃塞俄比亚未来育种计划的基因型

Aquaculture and Fisheries Studies Pub Date : 2022-09-05 DOI: 10.31038/afs.2022443

Garedo Tesfa, Berhanu Sime

引用次数: 0

Effects of African Walnut (Tetracarpidium conophorum) Leaf Powder on Growth Performance and Histopathology of African Catfish (Clarias gariepiuns) 非洲核桃叶粉对非洲鲶鱼生长性能和组织病理学的影响

Aquaculture and Fisheries Studies Pub Date : 2022-06-29 DOI: 10.31038/afs.2022442

引用次数: 0

Investigating Feeding Regimen of Brown Trout (Salmo Trutta Fario) in Tonekabon River, Northern Iran 伊朗北部Tonekabon河褐鳟(Salmo Trutta Fario)摄食方式调查

Aquaculture and Fisheries Studies Pub Date : 2022-06-29 DOI: 10.31038/afs.2022441

Mehran Moslemi, Mohamadreza Ahmadi, Ali Barzegar

引用次数: 1

Effect of Nitrogen and Phosphorus Fertilizer Rates on Yield and Yield Components Sorghum (Sorghum bicolor L. Moench) at Kersa Woreda of Oromia Region 氮磷肥施用量对奥罗米亚地区克尔萨沃瑞达高粱产量及产量构成的影响

Aquaculture and Fisheries Studies Pub Date : 2022-05-11 DOI: 10.31038/afs.2022434

G. Hailu, M. Kedir

{"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}

引用次数: 1

Breeding and Culture of Macrobrachium rosenbergii; Giant Freshwater Prawn (Scampi), Practiced along the Coast of Kerala, India 罗氏沼虾的选育与培养巨型淡水对虾(虾)，沿印度喀拉拉邦海岸练习

Aquaculture and Fisheries Studies Pub Date : 2022-05-07 DOI: 10.31038/afs.2022432

VS Ajay

引用次数: 0