Download or read book Selectivity of Gillnets in the California Pacific Herring Roe Fishery written by Walter A. Dahlstrom and published by . This book was released on 1977 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gillnet Selectivity Data for the British Columbia Herring Roe Fishery in 1976 written by and published by . This book was released on 1981 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Characteristics of the Gill Net Catch from the Pacific Herring Clupea Harengus Pallasi Roe Fishery in California written by and published by . This book was released on 1988 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Characteristics of the Gill Net Catch from the 1989 90 Pacific Herring Roe Fishery in California written by Jerome D. Spratt and published by . This book was released on 1990 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Characteristics of the Catch from the Pacific Herring Clupea Harengus Pallasi Roe Fishery in California written by and published by . This book was released on 1986 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Characteristics of the Catch from the Pacific Herring Clupea Pallasi Roe Fishery in California written by and published by . This book was released on 1990 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Characteristics of the Gill Net Catch from the 1988 89 Pacific Herring Clupea Harengus Pallasi Roe Fishery in California written by Jerome D. Spratt and published by . This book was released on 1989 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Characteristics of the Gill Net Catch from the 1987 88 Pacific Herring Clupea Harengus Pallasi Roe Fishery in California written by Jerome D. Spratt and published by . This book was released on 1988 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Status of the Pacific Herring Clupea Harengus Pallasii Resource in California 1972 to 1980 written by Jerome D. Spratt and published by . This book was released on 1981 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selectivity of Gill Nets on Spanish Mackerel Scomberomorus Maculatus King Mackerel S Cavalla and Bluefish Pomatomus Saltatrix written by Lee Trent and published by . This book was released on 1983 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Annotated Bibliography on Impacts of Gillnets on Non targeted Species written by Sheridan Stone and published by . This book was released on 1986 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estimation of Gillnet Selectivity for Atlantic Herring Clupea Harengus Harengus L from the West Coast of Newfoundland 1997 2001 written by Canada. Department of Fisheries and Oceans and published by Mont-Joli, Quebec : Fisheries and Oceans 2003.. This book was released on 2003 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gillnet Dropout in the Roe Herring Gillnet Fishery in British Columbia written by Canada. Department of Fisheries and Oceans and published by Nanaimo, B.C. : Government of Canada, Fisheries and Oceans. This book was released on 1982 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Collected Reprints written by Southwest Fisheries Center (U.S.) and published by . This book was released on 1990 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Marine Resources Administrative Report written by and published by . This book was released on 1987 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Evaluation of the Extent of Gillnet Dropout in a Roe Herring Fishery in British Columbia written by Humphreys, R. D and published by Nanaimo, B.C : Fisheries and Marine Service. This book was released on 1975 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Manual on Estimation of Selectivity for Gillnet and Longline Gears in Abundance Surveys written by Holger Hovgård and published by Food & Agriculture Organization of the UN (FAO). This book was released on 2000 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: This manual defines methods for estimating selectivity of gillnet and longline gears, with particular reference to the use of these gears in abundance surveys. The manual illustrates how gear design, the basic concepts of size selection and fish morphometric data can be used to model selectivity. Statistical estimation methods are described in detail, and examples given of their application in spreadsheets.
