processes and products studied by NMFS, by 

 Malcolm B. Hale. November 1972, v + 32 pp., 15 

 figs., 17 tables, 1 app. table. Price 50 cents. 

 ABSTRACT 

 Research into biological methods for fish protein con- 

 centrate (FPC) preparation which has been carried out 

 within the National Marine Fisheries Service is sum- 

 marized. The effects of various processing conditions 

 and commercially available proteolytic enzymes on yields 

 and characteristics of water-soluble fish protein hydroly- 

 sates are presented. Soluble FPC prepared from red hake 

 (Urophycis chuss) tended to be deficient in either tryp- 

 tophan or histidine, depending on the pH of hydrolysis. 

 Hydrolysis of raw fish with an alkaline protease of Bacillus 

 subtilis at pH 8.5 or above gave the best balance of essen- 

 tial amino acids and a high yield of soluble product. Pan- 

 creatin also gave very good results at pH 8.5. The protein 

 efficiency ratio (PER) of a totally soluble FPC prepared 

 from alewife (Alosa pseudoharengus) was equivalent to 

 that of casein. Soluble products prepared from hake were 

 equivalent to casein as a wheat supplement but not as a 

 sole source of protein. Process outlines and preliminary 

 cost estimates are presented for the production of two 

 types of fish protein hydrolysates. Possible food uses and 

 the flavor problem are discussed. This report includes a 

 literature survey of fish protein modifications by fermen- 

 tation and selected chemical hydrolysis methods as well 

 as by enzymatic hydrolysis processes. 



658. List of fishes of Alaska and adjacent waters with 

 a guide to some of their literature, by Jay C. Quast 

 and Elizabeth L. Hall. July 1972. iv + 47 pp. Price 

 50 cents. 



ABSTRACT 

 The authors list 432 species known to occur in Alaska 

 waters, supplemented by 137 species that have been 

 recorded from neighboring waters and, in the authors' 

 opinion, should be considered when new collections are 

 identified. Species entries are annotated to include com- 

 mon names, recorded range, useful references, localities 

 represented by specimens in the collection of the Auke 

 Bay Fisheries Laboratory, and comments on Taxonomy. 

 Recorded geographic ranges are extended for 26 

 species: Ophidiidae— Spectrunculus radcliffel; 

 Scorpaenidae — Sebastes emphaeus, S. nigrocinctus, S. 

 wilsonl; Cottidae — Eurymen gyrinus, Gymnocanthus de- 

 trisus, G. pistilliger, Hemilepidotus zaplus, Icelus spatula, 

 I. uncinalis, Myoxocephalus jaok, Nautlchthys 

 pribilovius, Triglops scepticus; Agonidae— Agonopsis 

 emmelane, Aspidophoroides bartoni, Ocella verrucosa; 

 Cyclopteridae — Careproctus melanurus, C. rastrinus, 

 Cyclopteropsis phrynoides, Liparis bristolense, L. 

 ochotensis, Paraliparis caudatus, P. deani, Temnocora 

 Candida; Scombridae — Thunnus thynnus; Pleuro- 

 nectidae— Limanda proboscidea. 



659. The Southeast Fisheries Center bionumeric 

 code. Part l: Fishes, by Harvey R. Bullis, Jr.. 

 Richard B. Roe, and Judith C. Gatlin. July 1972, 

 xl + 95 pp., 2 figs. Price $1.25. 



ABSTRACT 



The Southeast Fisheries Center, Pascagoula, Missis- 

 sippi Laboratory uses a nine-digit numeric code to 

 catalog marine organisms. The basic code was adapted 

 from the FAO taxonomic code developed in 1960, to 

 which generic and specific levels were added and con- 

 siderable classification modifications adopted. 



This publication provides the code listing for fishes. 

 Succeeding publications will deal with such groups as 

 Crustacea, mollusca, and various invertebrates. 



660. Afreshwaterfishelectro-motivator(FFEM)-its 

 characteristics and operation, by James E. Ellis 

 and Charles C. Hoopes. November 1972, iii + 11 

 pp., 9 figs. 



ABSTRACT 

 A prototype Freshwater Fish Electro-Motivator (FFEM) 

 system was developed as a research tool to test the appli- 

 cation of electricity for use with active and passive fishing 

 gear for increasing the gear's catching efficiency. The 

 system's basic characteristics and operating modes are 

 explained. The prototype system is extremely sophisti- 

 cated, and its versatility permits single or multiple time- 

 sequenced electrode loading and various pulse patterns, 

 and allows duty cycles over a wide dynamic electrode 

 load range. A summary of the field testing is discussed. 



661-662. To be published in 1973. 



663. Fish larvae collected from the northeastern 

 Pacific Ocean and Puget Sound during April and 

 May 1967, by Kenneth D. Waldron. December 

 1972, iii + 16 pp., 2 figs.. 1 table. 4 apps. tables. 

 Price 30 cents. 



ABSTRACT 

 Fish larvae belonging to 24 families and the suborder 

 Blennioidea were collected from Puget Sound and the 

 Pacific Ocean off British Columbia, Washington, and 

 Oregon during April and May 1967. All families and the 

 Blennioidea were present in oceanic waters, but only 

 13 families and the Blennioidea were present in Puget 

 Sound. The most abundant families in the oceanic area 

 were Scorpaenidae, Myctophidae. and Pleuronectidae, 

 whereas in Puget Sound the most abundant families were 

 Gadidae, Pleuronectidae. and Scorpaenidae. Variations 

 in composition and numbers of larvae in the catch were 

 associated with area, water depth, water temperature, 

 and time of day at which the collections were made. 



664. Tagging and tag-recovery experiments with At- 

 lantic menhaden, Brevoortia tyrannus, by 

 Richard L. Kroger and Robert L. Dryfoos. De- 

 cember 1972. iv + 1 1 pp.. 4 figs.. 12 tables. 



ABSTRACT 



Laboratory tagging experiments with adult and juvenile 



Atlantic menhaden were conducted at Beaufort. N.C., in 



1965 and 1969. Tag-recovery experiments were done at 



menhaden processing plants at Beaufort, N.C Internal 



