An Introduction to Commercial Fishing Gear and （介绍商业渔具和）.pdf

Scottish Fisheries Fisheries Research Services Information Pamphlet No. 25 2004 An Introduction to Commercial Fishing Gear and Methods Used in Scotland R D Galbraith and A Rice after E S Strange FRS Marine Laboratory, Aberdeen ISSN: 0309 9105 SCOTTISH EXECUTIVE © Crown copyright 2 4 CONTENTS Introduction Fishing Methods for Commercially Important Species - Summary Trawling Demersal Otter Trawling (Bottom Trawling) Shooting and Hauling Otter Trawl Gear Twin Rig Trawling Demersal Pair Trawling Beam Trawling Shellfish Trawling Pelagic Pair Trawling (Mid-water Trawling) Pelagic Single Boat Trawling Seine-Netting Scottish Seining (Fly-dragging) Fishing the Seine-Net Pair Seining Purse-Seining Potting and Creeling Pots Creels Fishing Creels and Pots 2 Scallop Dredging Longlines Set-nets Bag-Nets and Stake-Nets The Bag-Net Fishing the Bag-Net Stake-Nets Fishing Stake-Nets Net and Coble (Beach-Seining) Fishing the Net and Coble Haaf-Net Acknowledgements Reading List First published 1977 Second Edition revised 1981 Third Edition republished 2 4 3 Note to the Third Edition Since this pamphlet was first published there have been fundamental changes in the status of fishing methods brought about by international recognition of territorial claims by coastal states in the administration of sea fisheries; political, economic and social change and an ongoing requirement to limit exploitation of diminished fish stocks. The loss of traditional distant and middle water fishing grounds marked the beginning of a decline which all but eli