Author: Zdeňka Svobodová
Publisher: Food & Agriculture Org.
ISBN: 9789251034378
Category : Technology & Engineering
Languages : en
Pages : 80

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Author: Coastal Engineering Research Center (U.S.)
Publisher:
ISBN:
Category : Coastal engineering
Languages : en
Pages : 50

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Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 256

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Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9251314896
Category : Technology & Engineering
Languages : en
Pages : 128

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Due to the recent rapid development of freshwater aquaculture in the Caucasus Region, many new and previously known fish diseases have appeared. One of the most prominent features of the region’s aquaculture is that it is mostly based on the rearing of cyprinids, mainly the common carp (Cyprinus carpio), as well as a few other predatory fish species. As a result, this book focuses on the diseases that affect these and other important warmwater fish species. Although this field guide covers the diseases of warmwater fish of Central and Eastern Europe, the Caucasus and Central Asia, it also draws upon the extensive knowledge base available for the countries of Central Europe and the former Soviet Union, as well as recent research findings from the Islamic Republic of Iran and from Turkey. The major warmwater fish species cultured in the region and their health status are discussed, and two major categories of disease are recognized: biotic and abiotic diseases. Although there are numerous biotic diseases, abiotic factors (e.g. lack of oxygen, temperature, feeding mistakes) remain the main cause of losses in aquaculture. The best practices for the field and laboratory examination of disease outbreaks are reviewed, and the importance of accurate and detailed data recording emphasized. Prevention as a key factor in avoiding the spread of disease is highlighted, and actions to prevent the spread of diseases between farms, regions, countries and continents are discussed. Possible methods for the treatment of each disease are reviewed; unfortunately, the chemicals available for use in aquaculture are now rather limited, as many of them are hazardous to both the environment and human health. Of the viral diseases discussed, spring viraemia of carp (SVC) and koi herpesvirus (KHV) pose the greatest threats to the world’s carp populations. Of the bacterial diseases, ulcer disease is still the main problem in carp culture, while among the parasites, Ichthyophthirius multifiliis, the cause of white spot disease, is among the most important. Exotic parasites such as various Thelohanellus species, as well as tapeworms belonging to the genera Bothriocephalus and Khawia, are responsible for a considerable amount of damage. Some diseases of unknown aetiology are also discussed.

Author: European Inland Fisheries Advisory Commission
Publisher: Food & Agriculture Org.
ISBN: 9789251022290
Category : Technology & Engineering
Languages : en
Pages : 88

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The fourteenth session of the European Inland Fisheries Advisory Commission (EIFAC)was held in Bordeaux from 27 May to 3 June 1986. The session reviewed EIFAC activities since 1984 in the fields of fishery biology and management, fish culture and diseases and water pollution control. EIFAC decided its future programme of work and in particular the activities which should be carried out until the session scheduled to take place in Sweden in 1988.

Author: Marian Leopold
Publisher: Food & Agriculture Org.
ISBN: 9789251011522
Category : Nature
Languages : en
Pages : 112

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This document deals with the problems of fish culture, particularly carp, in eastern Europe. It reviews the types, methodology and role of fish culture and the economic analysis of this activity. It shows that there is no universal method for economic analysis of fish culture, especially if it has to be used for comparing economic efficiency of fish farming activities, and presents a general simplified outline of feasible economic analysis.

Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 925131098X
Category : Technology & Engineering
Languages : en
Pages : 47

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The two and a half day Advisory Roundtable was convened to contribute to FAO’s response to the request by the 32nd Session of the Committee on Fisheries (COFI), to advise FAO on its approach to developing a more comprehensive report on methods and data and analytical approach, which could be used to provide a credible, objective and replicable assessment of inland fisheries; and ii) provide guidance on tools that could be provided to member states seeking advice with respect to assessing the status of their inland fisheries (yield/production, threats & drivers), predicting future impacts and how to quantify the effect of mitigation/adaptation measures on fisheries. The roundtable reviewed and discussed the background that had led up to the meeting to scrutinize the purpose of an assessment and the scope of coverage and how this could be used to determine the status of inland fisheries. It further developed the criteria to conduct such an assessment, and then attempted to apply the approach to a number of basins. This practical exercise was based on concrete examples from countries or basins with which the experts were familiar. It was concluded by the roundtable, that the use of a dual index approach is the right way to go, and that it can be used to assess fisheries both at the national, basin, regional and global levels although different levels of resolution will be required and may thus have somewhat different data requirements. Adding a valuation element will direct investment towards the fisheries that provides most benefit to society in the context of the priorities set at the national level. At the national level, data may include yields, catches, threats, and measures that can be used to estimate future adaptive capacity. For global level analysis an index approach will be necessary relying on “big” data. Any information system should be useful to serve, first and foremost, the countries that collect/analyse and provide the data. Reports to FAO that could be compiled into a global picture of the state of inland fisheries would be a value added product of this process. The national reports would also have utility in reporting on progress towards the Sustainable Development Goals/Aichi Targets.

Author: Food and Agriculture Organization of the United Nations
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 762

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Author: O. Ravera
Publisher: Elsevier
ISBN: 148329322X
Category : Medical
Languages : en
Pages : 225

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Ten well-known experts in their specific field illustrate and discuss the fundamentals of the effects of pollution on fresh water organisms, populations and communities, providing an up-to-date picture of research on this crucial problem

Author: National Measurement Laboratory (U.S.)
Publisher:
ISBN:
Category : Air
Languages : en
Pages : 970

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