A Study of the Movements of the Channel Catfish PDF Download
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Author: Robert L. Humphries
Publisher:
ISBN:
Category : Catfishes
Languages : en
Pages : 64
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Book Description
Author: Robert L. Humphries
Publisher:
ISBN:
Category : Catfishes
Languages : en
Pages : 64
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Book Description
Author: Robert L. Humphries
Publisher:
ISBN:
Category : Catfishes
Languages : en
Pages : 182
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Book Description
Author: Jamison L. Wendel
Publisher:
ISBN:
Category : Channel catfish
Languages : en
Pages : 338
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Book Description
Author: Larry D. Messman
Publisher:
ISBN:
Category : Channel catfish
Languages : en
Pages : 192
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Book Description
Author: Steven R. Walker
Publisher:
ISBN:
Category : Catfishes
Languages : en
Pages : 144
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Book Description
Author: C.S. Tucker
Publisher: Elsevier
ISBN: 0080472206
Category : Technology & Engineering
Languages : en
Pages : 686
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Book Description
The history of channel catfish farming in the United States serves as a model for the development of pond-based aquaculture industries worldwide. Channel catfish farming is the largest and economically most important aquaculture industry in the United States. In 2003, over 300,000 metric tons (662 million pounds) of channel catfish were processed, representing about half the total United States aquaculture production. Demand for farm-raised catfish is strong, with record processing years in 2002 and 2003. In 22 chapters written by active scientists in the field, Biology and Culture of Channel Catfish comprehensively synthesizes over 30 years of research on this American icon. Throughout the book, fundamental biological aspects of channel catfish are linked to practical culture techniques. Topics include: • Latest information on reproductive physiology, genetics, and breeding • Comprehensive treatment of catfish nutrition, feeds, and feeding practices • Water quality management and pond dynamics • In-depth review of immunology in channel catfish • Practical information on diseases and health management • Techniques for commercial culture, including innovative techniques such as raceways, recirculating systems, and partitioned aquaculture systems • Catfish economics and marketing • Exploration of environmental concerns, including recommended Best Management Practices
Author: James Lloyd Mauney
Publisher:
ISBN:
Category :
Languages : en
Pages : 174
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Book Description
Author: Stephen F. Siddons
Publisher:
ISBN:
Category :
Languages : en
Pages : 136
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Book Description
Channel Catfish are widely distributed across North America and highly valued as a sport fish and for food. While most Channel Catfish fisheries are managed under liberal harvest regulations, the Red River of the North (Red River) in Manitoba, Canada is managed with restrictive harvest regulations to promote a trophy fishery. Two barriers (dams) are present on the main stem of the Red River and may fragment the population to some degree. My objectives were to: 1) analyze population dynamics of the trophy Channel Catfish population on the lower Red River, 2) compare population characteristics of Channel Catfish in selected reaches throughout the Red River in Manitoba, and 3) determine movement characteristics of Channel Catfish and the permeability of a dam on the lower Red River. We compared our results to the most recent studies on Channel Catfish in the Red River, and also to range-wide age, growth, and mortality statistics. Channel Catfish in the lower Red River commonly reached ages > 20, grew slowly, and had a low mortality rate. Trophy Channel Catfish were most abundant below the dam on the lower river. The size structure within the most upstream reaches we studied were predominantly comprised of small- and intermediate-sized Channel Catfish. We determined the dam is passable by large Channel Catfish (>600 mm), but may be an impediment to small Channel Catfish. My mark-recapture data indicated Channel Catfish can move long distances, where upstream movements > 500 kilometers were common for large Channel Catfish. This research provides insight into the age, growth, and mortality of a trophy fishery for Channel Catfish. We believe restrictive harvest regulations are adequately maintaining the desired age structure and size structure of Channel Catfish in the lower Red River and by consequence, sustaining one of the premier fisheries in North America.
Author: Henry Hansen
Publisher:
ISBN:
Category :
Languages : en
Pages : 354
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Book Description
The large-scale movements and spatial behavior of channel catfish in the Red River of the North, have direct interactions with geopolitics, anthropogenic structures, and ecosystems. Investigating the spatial dynamics and exploitation of this mobile and internationally managed fish species provides opportunities for resource managers to design evidence-based policy for the diverse interest groups that utilize the fishery. My thesis comprised two parts: 1) characterize systemwide movement and survival patterns using mark-recapture methods and acoustic telemetry and 2) project the interaction of hypothetical exploitation scenarios and alternative movement methodologies to assess the fishery from an ecosystem service flow perspective. Channel catfish were tagged with Tbar tags and acoustic transmitters to track movement patterns and quantify harvest. Approximately 40% of individuals tagged with acoustic transmitters moved into Lake Winnipeg at least once during the study. Conversely, about 30% of T-bar tag recaptures in the U.S.A. had been initially marked in Canada. A large proportion (0.89-0.97) of the individuals remained within the initial study reach where they were tagged. Fishing mortality was estimated to be less than 0.001, and natural mortality was estimated to be 0.16 across the entire system. Projection models demonstrated that trophy stages of channel catfish were highly sensitive to exploitation and were typically depleted at or below a 0.30 exploitation rate. Depletion of populations and changes in stock structure affected subregions within the Red River system differently which resulted in competing strategies among countries and fishers from the perspective of economic valuation of harvests. We found that recruitment from areas with the greatest population size appeared to buffer aspects of harvest within regions and to some extent immediately adjacent regions. Movement, regardless of methodology, was critical in supporting exploitation for regions with low recruitment. The sustainability of exploiting highly mobile fish species from an ecosystem service flow perspective hinges on the ability of fisheries management organizations to incorporate spatial variability and understand the economic consequences of exploitation for competing interests.
Author: Hanna Gibbs Kruckman
Publisher:
ISBN:
Category : Channel catfish
Languages : en
Pages : 134
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Book Description
