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 resources, 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. Tt 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 NOAA Publications Section, 

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



586. The Trade Wind Zone Oceanography Pilot Study. 

 Part VII : Observations of sea birds March 1964 

 to June 1965. By Warren B. King. June 1970, 

 vi -I- 136 pp., 36 figs., 11 tables. 



591. A bibliography of the lobsters, genus Homarus. 

 By R. D. Lewis. January 1970, i -|- 47 pp. 



592. Passage of adult salmon and trout through pipes. 

 By Emil Slatick. January 1970, iii -|- 18 pp., 

 8 figs., 12 tables. 



594. Seasonal and areal distribution of zooplankton 

 in coastal waters of the Gulf of Maine, 1967 and 

 1968. By Kenneth Sherman. July 1970, iii -|- 

 8 pp., 6 figs., 3 tables. 



595. Size, seasonal abundance, and length-weight re- 

 lation of some scombrid fishes from southeast 

 Florida. By Grant L. Beardsley, Jr., and William 

 J. Richards. May 1970, iii + 6 pp., 5 figs., 2 

 tables. 



596. Fecundity, multiple spawning, and description of 

 the gonads in Sebastodes. By John S. MacGregor. 

 March 1970, iii -|- 12 pp., 6 figs., 7 tables. 



597. Fur seal investigations, 1967. By Bureau of 

 Commercial Fisheries Marine Mammal Biological 

 Laboratory. March 1970, vii + 104 pp., 31 figs., 

 79 tables. 



599 Diagnostic characters of juveniles of the shrimps 

 Penaeus aztenis azteciis, P. diiorarum duorarum, 

 and P. hrasiliensis (Crustacea, Decapoda, Penaei- 

 dae). By Isabel Perez Farfante. February 

 1970, iii -I- 26 pp., 25 figs. 



600. Birectilinear recruitment curves to assess in- 

 fluence of lake size on survival of sockeye salmon 

 (Oncorhynchns nerka) to Bristol Bay and fore- 

 cast runs. By Ralph P. Silliman. March 1970, 

 iii 4- 9 pp., 13 figs., 2 tables. 



601. Effect of flow on performance and behavior of 

 Chinook salmon in fishways. By Clark S, Thomp- 

 son. March 1970, iii -|- 11 pp., 8 figs., 3 tables. 



602. Biological characteristics of intertidal and fresh- 

 water spawning pink .salmon at Olsen Creek, 

 Prince William Sound, Alaska, 1962-63. By John 

 H. Helle. May 1970, iii -f- 19 pp., 11 figs., 5 

 tables. 



603. Distribution and abundance of fish in the Yakima 

 River, Wash., April 1957 to May 1958. By Ben- 

 jamin G. Patten, Richard B. Thompson, and Wil- 

 liam D. Gronlund. June 1970, iii -)- 31 pp., 26 

 figs., 37 tables. 



604. The flora and fauna of a basin in central Florida 

 Bay. By J. Harold Hudson, Donald M. Allen, 

 and T. J. Costello. May 1970, iii -|- 14 pp., 2 figs., 

 1 table. 



605. Contributions to the life histories of several 

 penaeid shrimps (Penaeidae) along the south 

 Atlantic Coast of the United States. By William 

 W. Anderson. May 1970, iii + 24 pp., 15 figs., 12 

 tables. 



606. Annotated references on the Pacific saury, Colol- 

 abis xaira. By Steven E. Hughes. June 1970, 

 iii -I- 12 pp. 



607. Studies on continuous transmission frequency 

 modulated sonar. Edited by Frank J. Hester. 

 June 1970, iii -|- 26 pp. 1st paper. Sonar target 

 classification experiments with a continuous- 

 transmission Doppler sonar, by Frank J. Hester, 

 pp. 1-20, 14 figs., 4 tables; 2d paper. Acoustic 

 target strength of several species of fish, by H. W. 

 Volberg, pp. 21-26, 10 figs. 



608. Preliminary designs of traveling screens to col- 

 lect juvenile fish. July 1970, v -(- 15 pp. 1st 

 paper. Traveling screens for collection of juvenile 



Continued on inside back cover. 



