Selectivity Of Gill Nets On Spanish Mackerel Scomberomorus Maculatus King Mackerel S Cavalla And Bluefish Pomatomus Saltatrix
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Selectivity Of Gill Nets On Spanish Mackerel Scomberomorus Maculatus King Mackerel S Cavalla And Bluefish Pomatomus Saltatrix
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Author : Lee Trent
language : en
Publisher:
Release Date : 1983
Selectivity Of Gill Nets On Spanish Mackerel Scomberomorus Maculatus King Mackerel S Cavalla And Bluefish Pomatomus Saltatrix written by Lee Trent and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Bluefish categories.
Information from experimental settings of gill nets reported in the literature and data taken from commercial fishermen in Florida from 1973 to 1981 were used to analyze gill net selection on Spanish mackerel, Scomberomorus maculatus, king mackerel, S. cavalla, and bluefish, Pomatomus saltatrix from Florida and Serra Spanish-mackerel, S. braziliensis, from Brazil. The information on Spanish mackerel and bluefish obtained from the commercial gillnet fishedes did not further our understanding of selectivity over that produced by experimental nettings except in defining girth-length relations. The commercial fisheries data appeared to reflect mostly the sizes of fish that were abundant at the time of capture ratner than the effects of selectivity. We did use commercial fisheries data for describing selectivity of king mackerel, however, because we had other estimates of the size compositions of the populations to adjust the gillnet distributions for unequal numbers of fish in the length intervals. Selectivity was evaluated under the assumptions that: (1) the selectivity curve would take the form of a normal frequency distribution; (2) the efficiencies of two nets with different mesh sizes would be similar for fish of their respective lengths; and (3) the standard deviations of the distributions for two different mesh sizes would be equal. Under these assumptions the computed mean selection lengths in relation to mesh size and species- were: Spanish mackerel - 6.3 cm stretched mesh, 30.8 cm fork length; 7.0 cm SM, 33.9 cm FL; 7.6 cm SM, 37.0 cm FL; 8.2 cm SM, 40.1 cm FL; 8.9 cm SM. 43.2 cm FL; and 9.5 cm SM, 46. 3 cm FL. Bluefish - 6.3 cm SM, 28.5 cm FL; 7.0 cm SM, 31.4 cm FL; 7.6 cm SM, 34.2 cm FL; 8.2 cm SM. 37.1 cm FL; and 8.9 cm SM, 40.0 cm FL. King mackerel - 12.1 cm 5M, 92.-1 cm FL. Serra Spanish mackerel - 6.0 cm SM. 42. 1 cm FL; 8.0 cm SM. 43.6 cm FL; and YO cm SM, 55.2 cm FL.
Selectivity Of Gill Nets On Spanish Mackerel Scomberomorus Maculatus King Mackerel S Cavalla And Bluefish Pomatomus Saltatrix
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Author : L. Trent
language : en
Publisher:
Release Date : 1983
Selectivity Of Gill Nets On Spanish Mackerel Scomberomorus Maculatus King Mackerel S Cavalla And Bluefish Pomatomus Saltatrix written by L. Trent and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with categories.
Noaa Technical Report Nmfs
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Author :
language : en
Publisher:
Release Date : 1984
Noaa Technical Report Nmfs written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Fisheries categories.
Noaa Scientific And Technical Publications Announcement
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Author :
language : en
Publisher:
Release Date : 1984
Noaa Scientific And Technical Publications Announcement written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Engineering categories.
Government Reports Announcements Index
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Author :
language : en
Publisher:
Release Date : 1984
Government Reports Announcements Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Science categories.
A Bibliography Of Noaa Technical Memoranda Issued By The Southeast Fisheries Science Center Of The National Marine Fisheries 1972 1993
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Author : Harriet M. Corvino
language : en
Publisher:
Release Date : 1994
A Bibliography Of Noaa Technical Memoranda Issued By The Southeast Fisheries Science Center Of The National Marine Fisheries 1972 1993 written by Harriet M. Corvino and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Fisheries categories.
"The Southeast Fisheries Science Center (SEFSC) is one of five regional fishery research centers of the National Marine Fisheries Service (NMFS). In 1970, the NMFS was organized as a component of the National Oceanic and Atmospheric Administration (NOAA) in the U.S. Department of Commerce. The Fisheries Science Centers provide scientific information required for decisions relating to the conservation and management of fishery resources, and the protection of fishery habitats, endangered and threatened species. In 1972, the NOAA Technical Memorandum series was established and the Southeast Fisheries Science Center began the publication of research reports. The purpose of this series is timely dissemination of the results of scientific research. The series also affords the SEFSC a means of publishing research results in greater depth and detail than is normally allowed by scientific journals, which usually have stringent length restrictions. To address the difficulties of identification and location of these publications, we present the following listing of SEFSC Technical Memoranda from number 1 (1972) to number 340 (1993). They are available from their originating laboratories or from the National Technical Information Service. A directory of these sources is provided on page 2"--Introduction
Fishery Bulletin
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Author :
language : en
Publisher:
Release Date : 1983
Fishery Bulletin written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Fisheries categories.
Government Reports Annual Index
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Author :
language : en
Publisher:
Release Date : 1984
Government Reports Annual Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Research categories.
Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Monthly Catalog Of United States Government Publications
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Author :
language : en
Publisher:
Release Date : 1984
Monthly Catalog Of United States Government Publications written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Government publications categories.
Government Reports Annual Index Keyword A L
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Author :
language : en
Publisher:
Release Date : 1984
Government Reports Annual Index Keyword A L written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Government reports announcements & index categories.