salinity, dissolved oxygen, dissolved organic nitrogen, nitrite, total 

 phosphorus, inorganic phosphate phosphorus, pH, carbon dioxide, 

 total alkalinity, carbonate alkalinity, and turbidity. 



FISHERY FACTS 



7. A Trapping System for Harvesting Sablefish Anopio- 

 poma fimbria. By Fred W. Hipkins. November 1974, 20 p., 

 17 figs. 



ABSTRACT 



An improved method of commercial fishing for sablefish, 

 commonly known as black cod (not related to the family of 

 codfishes), is now used by commercial fishermen from California to 

 Alaska. Fish are captured and impounded in lightly constructed, 

 baited traps. The traps are collapsible (they fold down) but are rigid 

 when set out to fish. They can be completely covered with webbing 

 or steel wire mesh. Fish impounded in the traps, which are attached 

 to groundlines. are alive and in excellent condition when brought 

 aboard the tishmg vessels. The traditional setline method lor tishing 

 sablefish requires considerably more bait, larger fishing crews, and 

 many more hours of work per day to catch a comparable amount of 

 sablefish. 



Datails of the trapping gear, setlines, and buoylines, plus the 

 vessel equipment, fishing instructions, and locations of traditional 

 fishing grounds are described. 



8. Sanitation Recommendations for Fresh and Frozen Fish 

 Plants. By J. Perry Lane. November 1974, 39 p., 14 figs. 



ABSTRACT 



The problem of sanitation in fish -processing plants is receiving 

 increasing attention from Federal and State regulatory agencies, as 

 well as private industry. This article covers recommended 

 guidelines that can assist the processors of fresh and frozen fish in 

 evaluating their existing sanitation practices or in establishing new 



9. Design and Materials Used in Construction of a 16-Foot 

 Shrimp Trawl. By Elmer J. Gutherz, Anthony F. Serra, 

 and Edward F. Klima. December 1974, 14 p.. 12 figs., 1 

 table. 



(No abstract) 



10. How to Build Marine Artificial Reefs. By R. 0. Parker, 

 Jr., R. B. Stone, C. C. Buchanan, and F. W. Steimle, Jr. 

 December 1974, 47 p., 21 figs., 1 table, 4 app. figs. 



ABSTRACT 



Artificial reefs provide or improve rough bottom habitat and 

 offer fishery scientists and administrators an effective technique to 

 conserve and develop coastal fishery resources. With careful 

 planning and organized efforts, local reef committees can build reefs 

 to improve fishing and contribute to the recreational and financial 

 growth of coastal communites. Advice and procedures are 

 presented for: 1) selecting construction materials. 2) determining a 

 suitable reef site. 3) obtaining permits. 4) buoying the reef, and 5) 

 preparing, transporting, and placing reef-building materials. 

 Included in appendixes are instructions for preparing permits, 

 addresses of Federal and State agencies involved in approving or 

 funding reef construction, and addresses of manufacturers of 

 materials and equipment. 



NOAA TECHNICAL REPORT NMFS SSRF 



674. Lake Erie Bottom Trawl Explorations, 1962-66. By 

 Edgar W. Bowman. January 1974, iv + 21 p., 9 figs., 1 

 table, 7 app. tables. 



ABSTRACT 



The Bureau of Commercial Fisheries (now the National Marine 

 Fisheries Service) Exploratory Fishing and Gear Research Base, at 

 Ann Arbor, Mich., surveyed the abundance, availability to the otter 

 (bottom) trawl, and depth distribution of various Lake Erie fish 

 stocks between April 1962 and October 1966. The four exploratory 

 cruises, conducted aboard the research vessel Kaho, clearly 

 demonstrated the effectiveness of the bottom trawl in producing 

 commercial quantities of yellow perch, Perca flavescens, and 

 rainbow smelt. Osmerus mordax. Freshwater drum, Aplodinottis 

 grunniens: carp, Cyprinus carpio; channel catfish, Ictalurus 

 punctatus; and white bass. Roccus chrysops, were all produced 

 in commercial quantities at least once during the study and 

 collectively account for 17.1% of the total landings. 



Between the first exploratory cruise in 1962 and the last m 1966 

 the abundance of yellow perch decreased significantly, and that of 

 alewife, Alosa pseudoharengus, increased dramatically. 



675. Proceedings of the International Billfish Symposium, 

 Kailua Kona, Hawaii, 9-12 August 1972. Part 2. Review 

 and Contributed Papers. By Richard S. Shomura and 

 Francis Williams (editors). July 1974, iv + 335 p. 



(No abstract) 



(675.) Proceedings of the International Billfish Symposium, 

 Kailua-Kona, Hawaii, 9-12 August 1972. Part 2. Review 

 and Contributed Papers— A Review of the World 

 Commercial Fisheries for Billfishes. By Shoji Ueyanagi. 

 July 1974, p. Ml. 



ABSTRACT 



This report gives a general "overview" of the commercial 

 fisheries for billfishes. The present world production of billfishes is 

 approximately 100.000 tons per year, of which more than 90% is 

 taken by the tuna longline fishery. Japan alone produces about 70% 

 of the world's catch oibillfishes and is the principal consumer nation 

 of these fish. 



Although billfishes account for only about 18% of the longline 

 catches, they are presently of considerable importance, especially 

 among the fishery products utilized in Japan. Tnis report discusses 

 the value and utilization of billfishes in Japan, and describes how 

 billfishes have gained status as a quality fish, commanding prices 

 comparable to the tunas. In addition, the expansion of the longline 

 fishery is described, showing that by 1965 the fishery had covered 

 the entire distributional range of the billfishes. Catch and effort 

 data for billfishes indicate that 1 ) swordfish is the only species which 

 has shown an increase in landings in recent years. 2) blue marlin 

 landings have decreased in recent years in the South Pacific. 

 Atlantic, and to a slightly lesser degree, also in the Indian Ocean, 

 and ,3) the catch of the striped marlin has fluctuated greatly from 

 year to year. 



(675.) Proceedings of the International Billfish Symposium, 

 Kailua-Kona, Hawaii, 9-12 August 1972. Part 2. Review 

 and Contributed Papers— A Review of the World Sport 

 Fishery for Billfishes (Istiophoridae and Xiphiidae). By 

 Donald P. de Sylva. July 1974, p. 12-33. 



ABSTRACT 



Sport fishing is conducted for billfishes (Istiophoridae and 

 Xiphiidae) in nearly all warm oceans, primarily in tropical and 

 subtropical seas. In probable order of descending catch rate, the 

 principal species caught by anglers are sailfish. wTiite marlin. blue 

 marlin. striped marlin. black marlin. swordfish. and longbill 

 spearfish: the shortbill and Mediterranean spearfishes are rarely 

 taken by anglers. Important sport fisheries are presently 

 concentrated from Massachusetts to North Carolina and about 

 Bermuda, southeastern Florida, the northern and northeastern Gulf 

 of Mexico, the Bahamas, the larger islands of the Caribbean. 

 Venezuela, the eastern tropical Pacific between southern California 

 and Chile. Hawaii. New Zealand and eastern Australia, Kenya to 

 Cape Town, South Africa, Ivory Coast to Senegal, West Africa, and 

 off Portugal. Spain, and Italy. 



In some regions maximum angling effort coincides with 

 maximum availability of billfish. while in others, especially in the 

 western North Atlantic, maximum angling pressure is correlated 



