Author: Christopher L. Sarro
Publisher:
ISBN:
Category :
Languages : en
Pages : 142

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Book Description

Author:
Publisher: ScholarlyEditions
ISBN: 1464964955
Category : Science
Languages : en
Pages : 1175

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Book Description
Issues in Global Environment: Biodiversity, Resources, and Conservation: 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Global Environment—Biodiversity, Resources, and Conservation. The editors have built Issues in Global Environment: Biodiversity, Resources, and Conservation: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Global Environment—Biodiversity, Resources, and Conservation in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Global Environment: Biodiversity, Resources, and Conservation: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.

Author: Roy E. Martin
Publisher: CRC Press
ISBN: 1482293978
Category : Science
Languages : en
Pages : 984

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Book Description
Comprehensive handbook of seafood information! This definitive reference is the most comprehensive handbook of information ever assembled on foods and other products from fresh and marine waters. Marine and Freshwater Products Handbook covers the acquisition, handling, biology, and the science and technology of the preservation and processing of

Author: Canada. Department of Fisheries and Oceans. Halifax Laboratory. Biological Sciences Branch
Publisher: Halifax, N.S. : Canadian Atlantic Fisheries Scientific Advisory Committee
ISBN:
Category :
Languages : en
Pages : 39

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Book Description

Author: Clyde L. MacKenzie
Publisher:
ISBN:
Category : Placopecten magellanicus
Languages : en
Pages : 48

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Book Description

Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 788

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Book Description

Author: Bradley Paul Harris
Publisher:
ISBN:
Category :
Languages : en
Pages : 136

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Book Description

Author:
Publisher:
ISBN:
Category : Shellfish
Languages : en
Pages : 688

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Book Description

Author: Megan M. Levesque
Publisher:
ISBN:
Category : Placopecten magellanicus
Languages : en
Pages : 142

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Book Description
The sea scallop (Placopecten magellanicus) fishery is the most valuable wild scallop fishery in the world. Landings are primarily' adductor muscles, which are ideally creamy white and firm. Recently, significant numbers of dark brown to gray, flaccid and stringy-meats, caused by an apicomplexan, have been caught in areas of Georges Bank and the mid-Atlantic, and are a concern for the industry and management. To investigate the impacts of this disease, a technique to isolate gray from white meat scallops using anesthesia was developed. A four-month laboratory study was conducted comparing mortality rates and shell height-meat weight ratios of healthy and diseased scallops. The density of parasites with decreased meat quality was quantified using histological analysis, and GIMP (GNU Image Manipulation Program) software.Furthermore, age and frequency of infestation by boring sponge (Cliona vastifica) and boring worm (Polydora sp.) were examined with their association to meat quality. Significantly higher mortality in gray-meat scallops compared to white-meat scallops correlated with an increase in the number of parasite nuclei and boring intensity. Additionally, smaller meat weights and extensive myodegeneration were observed with higher levels of infection. Based on these findings, it is important to consider diseased scallops in formulating applied harvestable biomass estimates and in future management strategies. Three general shell height-meat weight relationships are used in the stock assessment for sea scallops; however, a change in this relationship represents a change in biomass estimates. Gray-meat indicates imminent mortality, which also changes the estimate of natural mortality used in stock assessments. The frequency of diseased individuals affects the effort/day as well as the estimate of landings/day used to distribute allocations in the fishery. Understanding the impacts of this disease and how to manage the fishery in its presence is important for the future of the fishery.

Author: Charles Grant Law
Publisher:
ISBN:
Category : Patinopecten
Languages : en
Pages : 120

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Book Description
This project focuses on the population dynamics of sea scallops in the Middle Atlantic Bight and Georges Bank/Southern New England regions. Most sea scallop biomass now occurs within the confines of large federally mandated closed areas and the fishery has moved toward a rotational harvesting strategy. With this dissertation we develop a biophysical model that enables the role of physical variability in this system, and how it interacts with life history processes to shape local and global population dynamics for sea scallops. The modeling effort will link hind-cast circulation simulations, an individual- based model for larval drift and an adult, size-structured, spatial population model. The results of these modeling efforts are compiled and interpreted in such a way as to be useful to managers of the sea scallop fishery. The final goal is to provide information about the impacts of environmental factors on sea scallop population dynamics so that the fishery can be managed proactively instead of reactively. Understanding the connections between sea scallop sub-populations, and how they vary from year to year, should be valuable in assessing the impacts of various real-world management strategies. The thesis is organized in four chapters: the first is an introduction, the second develops the dispersal kernels, the third integrates them into a metapopulation model, and the fourth describes the entire project in a style appropriate for a technical magazine.