Examining Variation in Sea Scallop Shell Growth and Environmental Conditions Across Georges Bank and the Mid-Atlantic PDF Download
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Author: Carly L. Mott
Publisher:
ISBN:
Category :
Languages : en
Pages : 252
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Book Description
Author: Carly L. Mott
Publisher:
ISBN:
Category :
Languages : en
Pages : 252
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Author: Bradley Paul Harris
Publisher:
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Category :
Languages : en
Pages : 136
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 300
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Author:
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ISBN:
Category :
Languages : en
Pages : 424
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 168
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Author: Han-Lin Lai
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 73
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Book Description
The 1996 Northeast Fisheries Science Center sea scallop survey was conducted during July 29 - August 9 and August 15 - 26 using the RIV ALBATROSS IV. The purpose of the survey was to monitor trends in abundance, population composition, and recruitment of sea scallop (Placopecten magellanicus) resources in the Mid-Atlantic and Georges Bank regions in depths between 28-110 meters (15 to 60 fin). A total of 429 sampling tows were conducted during the 1996 survey. Survey indices of relative abundance (stratified mean number per tow) and biomass (stratified mean meat weight per tow) were calculated for the principal scallop areas within the Mid-Atlantic and USA Georges Bank regions. Indices were derived for: 1) pre-recruits [80 meat count]; 2) recruits or harvestable-sized scallops [70 mm shell height; 80 meat count]; and 3) total scallops [all sizes]. In addition, percentage distributions of the number of scallops within five meat count intervals were calculated for each stratum, area, and region. Meat count refers to the number of scallop meats per pound. Results of the 1996 survey indicate that the indices of relative abundance and biomass in the Mid-Atlantic region decreased substantially from the relatively high levels observed in 1995. In the USA Georges Bank region, the indices of relative abundance and biomass increased substantially from the 1995 value. The most substantial increases of abundance and biomass indices occurred in the Northern Edge and Peak area; however, the indices decreased in the Southeast Part area between 1995 and 1996. . The Mid-Atlantic scallop resource had a high proportion of small scallops in 1996: 17% of the scallops caught were >80 count and 56% were in the 80-40 count category. Of the harvestable biomass
Author: Clyde L. MacKenzie
Publisher:
ISBN:
Category : Placopecten magellanicus
Languages : en
Pages : 48
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Author: William D. DuPaul
Publisher:
ISBN:
Category : Scallop fisheries
Languages : en
Pages : 48
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Author: Jonathan D. Carey
Publisher:
ISBN:
Category :
Languages : en
Pages : 172
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Author: Sandra E. Shumway
Publisher: Elsevier
ISBN: 0080480772
Category : Technology & Engineering
Languages : en
Pages : 1501
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Book Description
Scallops are among the better known shellfish and are widely distributed throughout the world. They are of great economic importance, support both commercial fisheries and mariculture efforts and occupy a unique niche in the marine environment. Contributions from world leaders in scallop research and culture cover all facets of scallop biology including anatomy, taxonomy, physiology, ecology, larval biology and neurobiology. Chapters are also devoted to diseases and parasites, genetics, population dynamics and the adductor muscle, with extensive reference lists provided for each chapter. Since the publication of the first edition of Scallops: Biology, Ecology and Aquaculture in 1991, commercial interest in scallops has grown globally and this is reflected in the seventeen extensive chapters covering both fisheries and aquaculture for all species of scallops in all countries where they are fished or cultured. The Second Edition is the only comprehensive treatise on the biology of scallops and is the definitive reference source for advanced undergraduate and graduate students, mariculturists, managers and researchers. It is a valuable reference for anyone interested in staying abreast of the latest advances in scallops.* Offers over 30 detailed chapters on the developments and ecology of scallops* Provides chapters on various cultures of scallops in China, Japan, Scandinivia, Eastern North American, Europe, and Eastern North America* Includes details of their reproduction, nervous system and behavior, genetics, disease and parasites, and much more* Complete updated version of the first edition
