نتایج جستجو برای: aquaculture techniques

تعداد نتایج: 638453  

Journal: :Sexual development : genetics, molecular biology, evolution, endocrinology, embryology, and pathology of sex determination and differentiation 2009
A Cnaani B Levavi-Sivan

Aquaculture is one of the fastest rising sectors of world food production. Hundreds of fish species are cultured, providing an affordable, high quality food source. Two aspects of sexual development are critically important for the continued improvement of cultured fish stocks: sexual dimorphism and control of reproduction. In this paper, we review the main methods used to control sex determina...

Journal: :Journal of Aquaculture Research & Development 2014

Journal: :محیط شناسی 0
ظهیر شکوه سلجوقی - مربی گروه شیلات، دانشکده علوم دریایی، دانشگاه دریانوردی و علوم دریایی چابهار غلامرضا رفیعی دانشیار گروه شیلات، دانشکدة منابع طبیعی، دانشگاه تهران اکبر ملک پور استادیار گروه شیمی، دانشکدة علوم، دانشگاه اصفهان امیر شکوه سلجوقی استادیار گروه شیمی، دانشکدة علوم، دانشگاه فردوسی مشهد امید صفری استادیار گروه شیلات، دانشکدة منابع طبیعی، دانشگاه فردوسی مشهد

use of wastewater treatment methods in aquaculture is one of the main ways for decreasing the environmental effects of this industry and applies the best management practices (bmps). anionic compounds are the main pollutants in recirculation aquaculture systems. ion exchangers such as clays are vastly applied in waste water industry but in aquaculture systems at yet there isn't any report ...

The present study was conducted to examine the development and validation of sustainable indicators related to aquaculture as a social-ecological system. By reviewing the literature, it was found about 148 indicators related to sustainable aquaculture in economic (market-oriented and responsive aquaculture, capability of risk assessment and crisis management, and financial management in aquacul...

2009
Doris Soto

An overview of the current scientific knowledge available on climate change implications for fisheries and aquaculture is provided through three technical papers that were presented and discussed during the Expert Workshop on Climate Change Implications for Fisheries and Aquaculture (Rome, 7–9 April 2008). A summary of the workshop outcomes as well as key messages on impacts of climate change o...

Journal: :تحقیق در علوم شیلاتی 0
m alizadeh sh dadgar m hafezieh

inland saline aquaculture may offer an opportunity for income diversification and a potentially productive use of land that can no longer support traditional agriculture in salt-affected parts of inland production and investment levels are characteristically low. it needs to develop in a manner that both prevents the further degradation of agricultural land and provides opportunities for an alt...

2017
Halley E. Froehlich Rebecca R. Gentry Michael B. Rust Dietmar Grimm Benjamin S. Halpern

Aquaculture is developing rapidly at a global scale and sustainable practices are an essential part of meeting the protein requirements of the ballooning human population. Locating aquaculture offshore is one strategy that may help address some issues related to nearshore development. However, offshore production is nascent and distinctions between the types of aquatic farming may not be fully ...

2015
Barry A. Costa-Pierce

Aquaculture is nothing new. It arose multiple times in indigenous societies where coastal population densities of “seafood eating peoples” increased beyond the carrying capacities of natural, aquatic ecosystems to provide for them. There have been many “blue revolutions” throughout history! Aquaculture has a long, fascinating pre-history with well documented “blue revolutions” occurring through...

پایان نامه :0 1374

the present study investigated the effect of the two vocabulary teaching techniques in est, namely the use of translation and the use of visual aids as two separate vocabulary teaching techniques. to answer the question of the study, a pretest (michigan test) was administered to the 58 randomly selected est students at khajeh nasiredin tusi university, faculty of mechanics. after the homogeneit...

2010
G. D. Stentiford B. Oidtmann A. Scott E. J. Peeler

a European Community Reference Laboratory for Crustacean Disease, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Barrack Road, Weymouth, Dorset DT4 8UB, United Kingdom b Epidemiology and Risk Team, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Barrack Road, Weymouth, Dorset DT4 8UB, United Kingdom c Fish Health Inspectorate, Centre for Environment, Fishe...

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