نتایج جستجو برای: fish yield

تعداد نتایج: 296754  

Journal: :Acta Scientiarum. Biological Sciences 2023

Tilapia is a species with great growth potential. Its production comes from semi-intensive system, such as earthen ponds (EP). Recently, biofloc technology (BFT) appears an option to intensify fish production. The objective of this work was compare the organosomatic indices, biochemical parameters, and chemical composition tilapia reared in EP BFT. Fish were grown for 150 days, initial weight ≅...

2012
M. A. Rahman S. Haque P. K. Sarma

The study examines the impact of the rice-cum-fish culture and the rice-mono culture on the rural households at Muktaghachha upazila of Mymensingh district in Bangladesh. Data were collected from 100 farmers of five villages following stratified random sampling technique. Activity budgets were prepared and comparisons were made through the tabular and statistical analyses. Both the rice-cum-fis...

Journal: :Ecological applications : a publication of the Ecological Society of America 2007
James E Byers Erik G Noonburg

Marine reserves are promoted as an effective supplement to traditional fishery management techniques of harvest quotas and effort limitation. However, quantitative fishery models have ignored the impact of noncompliance (poaching). Here we link a model of a harvested fish population to a game-theoretic representation of fisherman behavior to quantify the effect of poaching on fishery yield and ...

2008
J. M. REGENSTEIN

It has been estimated that the optimal yield of red hake, Urophycis chuss (also called squirrel hake, mud hake, and ling), is 32,000 metric tons (t). This is an increase from the 1978 optimal yield estimate which was 16,000 t. The international catch of this fish from Georges Bank in 1977 was 2,879 t with the U.S. commercial catch being just 96 t. Thus, there is an abundant resource of this spe...

Journal: :Journal of food science 2011
N Kamireddy S Jittinandana P B Kenney S D Slider R A Kiser P M Mazik J A Hankins

Rainbow trout were fed a low vitamin E (200 mg/kg; LVE) or a high vitamin E (5000 mg/kg; HVE) diet for 9 wk to characterize the effect of vitamin E supplementation at 5000 mg/kg on fillet quality. Fish were sampled at 2, 3, 4, 5, 7, and 9 wk of the trial. Fillets were stored at 2 °C for 0, 7, and 14 d, and analyzed for pH, psychrotrophic counts, color, cook yield, shear force, crude fat and moi...

2009
Tanja Miethe Calvin Dytham Ulf Dieckmann Jon Pitchford

Size-selective fishing may induce rapid evolutionary changes in life-history traits such as size at maturation. A major concern is that these changes will reduce population biomass and detrimentally affect yield and recruitment. Although marine reserves have been proposed as a tool for fisheries management, their evolutionary implications have as yet attracted little scrutiny. A simple model is...

Ziziphora clinopodioides is from the genus of Ziziphora and family of Lamiaceae,which grows in Iran and Turkey. This study was conducted to preserve the chemical and microbial quality of trout fish burger during storage using Ziziphora clinopodioides essential oil (ZEO) individually and in combination with nisin.  Firstly, the chemical composition of ZEO was deter...

Journal: :Nucleation and Atmospheric Aerosols 2022

Fish oil are currently high in demand due to its wide range of therapeutic benefits. High content eicosapentaenoic acid (EPA) and docosahexaenoic (DHA) derived from various sources marine life fish essential human mental developments metabolism. Swamp Eel Fish, scientifically known as Monopterus Albus is a freshwater that highly demands across South-East Asia can easily be found Malaysia. This ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2013
Anne Maria Eikeset Andries Richter Erin S Dunlop Ulf Dieckmann Nils Chr Stenseth

Fish stocks experiencing high fishing mortality show a tendency to mature earlier and at a smaller size, which may have a genetic component and therefore long-lasting economic and biological effects. To date, the economic effects of such ecoevolutionary dynamics have not been empirically investigated. Using 70 y of data, we develop a bioeconomic model for Northeast Arctic cod to compare the eco...

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