NOAA TECHNICAL REPORTS 

 National Marine Fisheries Service, Special Scientific Report-Fisheries Series 



The major responsibilities of the National Marine Fisheries Service (NMFS) are to monitor and assess the 

 abundance and geographic distribution of fishery resoui-ces, to understand and predict fluctuations in the quantity 

 and distribution of these resources, and to establish levels for optimum use of the resources. NMFS is also 

 charged with the development and implementation of policies for managing national fishing grounds, develop- 

 ment and enforcement of domestic fisheries regulations, surveillance of foreign fishing off United States coastal 

 waters, and the development and enforcement of international fishery agreements and policies. NMFS also as- 

 sists the fishing industry through marketing service and economic analysis programs, and mortgage insurance 

 and vessel construction subsidies. It collects, analyzes, and publishes statistics on various phases of the industry. 



The Special Scientific Report — Fisheries series was established in 1949. The series carries reports on scien- 

 tific investigations that document long-term continuing programs of NMFS, or intensive scientific reports on 

 studies of restricted scope. The reports may deal with applied fishery problems. The series is also used as a 

 medium for the publication of bibliographies of a specialized scientific nature. 



NOAA Technical Reports NMFS SSRF are available free in limited numbers to governmental agencies, both 

 Federal and State. They are also available in exchange for other scientific and technical publications in the 

 marine sciences. Individual copies may be obtained (unless otherwise noted) from NO.\A Publications Section, 

 Rockville, Md. 20852. Recent SSRF's are: 



619 Macrozooplankton and small nekton in the 

 coastal waters off Vancouver Island (Canada) 

 and Washington, spring and fall of 1963. By 

 Donald S. Day, January 1971, iii + 94 pp., 19 

 figs., 13 tables. 



620 The Trade Wind Zone Oceanography Pilot Study. 

 Part IX : The sea-level wind field and wind stress 

 values, July 1963 to June 1965. By Gunter R. 

 Seckel. June 1970, iii -r 66 pp., 5 figs. 



621 Predation by sculpins on fall chinook salmon, 

 Oncorhynchus tsliawytsclia, fry of hatchery or- 

 igin. By Benjamin G. Patten. February 1971, 

 iii -|- 14 pp., 6 figs., 9 tables. 



622 Number and lengths, by season, of fishes caught 

 with an otter trawl near Woods Hole, Massa- 

 chusetts, September 1961 to December 1962. 

 By F. E. Lu.x and F. E. Nichy. February 1971, 

 iii -f 15 pp., 3 figs., 19 tables. 



623 Apparent abundance, distribution, and migra- 

 tions of albacore, ThioniKS altiliinga, on the North 

 Pacific longline grounds. By Brian J. Rothschild 

 and Marian Y. Y. Yong. Septeml)er 1970, v + 

 37 pp., 19 figs., 5 tables. 



624 Influence of mechanical processing on the quality 

 and yield of bav scallop meats. Bv N. B. Webb 

 and F. B. Thomas. April 1971, ii'i -|- 11 pp., 9 

 figs., 3 tables. 



625 Distribution of salmon and related oceanographic 

 features in the North Pacific Ocean, spring 1968. 

 By Robert R. French. Richard G. Bakkala, !\Ia- 

 sanao Osako, and Jun Ito. March 1971, iii -j- 

 22 pp., 19 figs., 3 tables. 



626 Commercial fi.shery and biology of the fresh- 

 water shrimp, Macrohrachium, in the Lower St. 

 Paul River, Liberia, 1952-53. Bv George C. 

 Miller. Febi-uary 1971, iii + 13 pp., 8 figs., 

 7 tables. 



627 Calico scallops of the Southeastern United States, 

 1959-69. Bv Robert Cummins, Jr. June 1971, 

 iii -1- 22 pp., 23 figs., 3 tables. 



628 Fur Seal Investigations, 1969. By NMFS, Ma- 

 rine Mammal Biological Laboratory. August 

 1971, 82 pp., 20 figs., 44 tables, 23 appendix A 

 tables, 10 appendix B tables. 



629 Analysis of the operations of seven Hawaiian 

 skipjack tuna fishing vessels, June-August 1967. 

 By Richard N. Uchida and Ray F. Sumida. 

 March 1971, v -)- 25 pp., 14 figs., 21 tables. For 

 sale by the Superintendent of Documents, U.S. 

 Government Printing Office, Washington, D.C. 

 20402 - 35 cents. 



630 Blue crab meat. I. Preservation by freezing. 

 July 1971, iii -|- 13 pp., 5 figs., 2 tables. IL Effect 

 of chemical treatments on acceptability. By 

 Jurgen H. Strasser, Jean S. Lennon, and Fred- 

 erick J. King. July 1971, iii -f 12 pp., 1 fig., 9 

 tables. 



631 Occurrence of thiaminase in some common aquat- 

 ic animals of the United States and Canada. By 

 R. A. Greig and R. H. Gnaedinger. July 1971, 

 iii -f- 7 pp., 2 tables. 



632 .•\n annotated bibliography of attempts to rear 

 the larvae of marine fishes in the laboratory. By 

 Robert C. May. August 1971, iii -f 24 pp., 1 ap- 

 pendix I table, 1 appendix II table. For sale by 

 the Superintendent of Documents, U.S. Govern- 

 ment Printing Office, Washington, D.C. 20402 - 

 35 cents. 



633 Blueing of processed crab meat. II. Identification 

 of some factors involved in the blue discoloration 

 of canned crab meat CalUnectes sapidus. Bv 

 Melvin E. Waters. May 1971, iii + 7 pp., 1 fig'., 

 3 tables. 



634 Age composition, weight, length, and sex of her- 

 ring, Clupea paUasii, used for reduction in Alas- 

 ka, 1929-66. By Gerald M. Reid. July 1971, 

 iii -\- 25 pp., 4 figs., 18 tables. 



635 A bibliography of the blackfin tuna, Thiinnus 

 atlanticns (Lesson). By Grant L. Beardsley and 

 David C. Simmons. August 1971, 10 pp. For 

 sale by the Superintendent of Documents, U.S. 

 Government Printing Office, Washington, D.C. 

 20402 - 25 cents. 



Continued on inside back cover. 



