Fishing for Growth PDF Download

Author: Michael Roemer
Publisher: Harvard University Press
ISBN: 9780674304802
Category : Business & Economics
Languages : en
Pages : 236

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Author: Sekar Megarajan
Publisher: Delve Publishing
ISBN: 9781773611990
Category : Fishes
Languages : en
Pages : 0

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Growth rate is a primary trait of interest in most finfish selection programs and is intrinsically linked to productivity and profitability of finfish aquaculture industry in several parts of the world. Search for candidate genes influencing growth has been a major focus of research in aquaculture and several such genes have been isolated from the fish genome and their effects are quantified. Growth hormone genes have been studied extensively in many species because of its potential in enhancing the growth rate of fishes in aquaculture. The identified growth hormone gene in most of the fishes is roughly 1.5 kb long, with the protein coding region divided in to four to five blocks (exons) representing less than one third length of the genomic region. Growth hormone (GH) is a single chain polypeptide that plays a major role in the growth development of vertebrates. It is the main regulator of postnatal somatic growth and stimulates anabolic processes such as cell division, skeletal growth and protein synthesis. In addition, growth hormone is also involved in the regulation of fat oxidation, inhibition of glucose transport to peripheral tissues and regulation of ribosome translational activity, which in turn influences protein synthesis. Presently, the importance of GH as a candidate gene for studies of genetic variation in connection with growth traits and potential natural marker for studies of evolutionary relationship of various fishes has been demonstrated. Its potential application in the growth traits and fish evolution studies has been an active area of research. Natural growth rates of organisms have evolved to provide maximum fitness in wild environments and therefore, enhancement of natural growth rate of fish in aquaculture has been extensively explored, with gains arising from improvements in husbandry, nutrition, and genetical selection. Growth enhancement can be advantageous for aquaculture by shortening production time, and enhancing feed conversion efficiency. Therefore, endocrine approaches in controlling growth have been extensively explored. Several studies have demonstrated the efficacy of mammalian GH in the acceleration of growth of various species. In fish, GH administration by various modes of delivery like injection, and oral administration of hormones has been successfully studied. These studies have suggested that the exogenous growth hormone enhances fish growth by stimulating appetite and improving feed conversion. It is clearly understood that growth hormone plays major role in aquaculture industry by increasing the growth. Therefore, knowing the different aspects of growth hormone is very much essential for the researchers aim for growth enhancement in fishes.

Author: Brian M. Fagan
Publisher: Yale University Press
ISBN: 0300215347
Category : History
Languages : en
Pages : 365

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"Before prehistoric humans began to cultivate grain, they had three main methods of acquiring food: hunting, gathering, and fishing. Hunting and gathering are no longer economically important, having been replaced by their domesticated equivalents, ranching and farming. But fishing, humanity's last major source of food from the wild, has grown into a worldwide industry on which we have never been more dependent. In this history of fishing--not as sport but as sustenance--archaeologist and writer Brian Fagan argues that fishing rivaled agriculture in its importance to civilization. [He] tours archaeological sites worldwide to show ... how fishing fed the development of cities, empires, and ultimately the modern world"--Jacket flaps.

Author: Fikret Berkes
Publisher: IDRC
ISBN: 0889369437
Category : Electronic books
Languages : en
Pages : 321

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Managing Small-Scale Fisheries: Alternative directions and methods

Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9251305625
Category : Technology & Engineering
Languages : en
Pages : 227

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Book Description
The 2018 edition of The State of World Fisheries and Aquaculture emphasizes the sector’s role in achieving the 2030 Agenda for Sustainable Development and the Sustainable Development Goals, and measurement of progress towards these goals. It notes the particular contributions of inland and small-scale fisheries, and highlights the importance of rights-based governance for equitable and inclusive development. As in past editions, the publication begins with a global analysis of trends in fisheries and aquaculture production, stocks, processing and use, trade and consumption, based on the latest official statistics, along with a review of the status of the world’s fishing fleets and human engagement and governance in the sector. Topics explored in Parts 2 to 4 include aquatic biodiversity; the ecosystem approach to fisheries and to aquaculture; climate change impacts and responses; the sector’s contribution to food security and human nutrition; and issues related to international trade, consumer protection and sustainable value chains. Global developments in combating illegal, unreported and unregulated fishing, selected ocean pollution concerns and FAO’s efforts to improve capture fishery data are also discussed. The issue concludes with the outlook for the sector, including projections to 2030. As always, The State of World Fisheries and Aquaculture aims to provide objective, reliable and up-to- date information to a wide audience, including policy-makers, managers, scientists, stakeholders and indeed all those interested in the fisheries and aquaculture sector.

Author: A. H. Weatherley
Publisher: London ; Toronto : Academic Press
ISBN:
Category : Nature
Languages : en
Pages : 464

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The study of fish growth; Nutrition; Metabolism and growth; Protein, lipid and caloric contents; Tissues and growth; Influence of hormones; Determination of age and growth; Growth, competition, and the niche concept; Increase and self-regulation of fish populations; Feeding relations, correlated functional morphology, growth and size; Production dynamics of fish; Fish culture; Applications and the future.

Author: A. H. Weatherley
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 312

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Author: Anthony James Fedler
Publisher:
ISBN:
Category : Fishers
Languages : en
Pages : 43

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Author: Gaonkar
Publisher: APH Publishing
ISBN: 9788131300350
Category : Fisheries
Languages : en
Pages : 322

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Papers presented at the National Seminar on Conservation and Sustainable Growth of Fisheries, held at Zuarinagar during 4-5 October 2004.

Author: Arthur NEWMAN (Management Scientist.)
Publisher:
ISBN:
Category :
Languages : en
Pages :

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