54 



Fishery Bulletin 92(1). 1994 



ratory (NMML) and Los Angeles County Museum 

 (LACM). Cephalopod identifications were based on 

 the reference collections of the NMML and Oregon 

 State University (OSU). Voucher specimens of prey 

 material (statoliths, beaks, otoliths, teeth, and 

 bones) are archived at the NMML. Identifications of 

 squid and squid beaks were confirmed by C. Fiscus 

 (NMML, retired), K. Jefferts (OSU), and W. Walker 

 (LACM). Identification of fish otoliths and bones 

 were confirmed by G. Antonelis Jr. (NMML) and J. 

 Dunn (University of Washington) respectively. 

 Voucher samples of juvenile pollock otoliths were 

 confirmed by A. Brown (Alaska Fisheries Science 

 Center [AFSC]), K. Frost (Alaska Department of 

 Fish and Game [ADF&G], and L. Lowry [ADF&G]). 

 Gary Walters (AFSC) helped interpret bottom trawl 

 values, and W Carlson and C. Leap of the AFSC 

 Graphics Unit helped produce the figures. 



The following individuals contributed to the qual- 

 ity and content of this manuscript: G. Antonelis Jr., 

 J. Baker, L. Fritz, R. Gentry, P. Livingston, and two 

 anonymous reviewers. These data were first pre- 

 sented in part as a Northwest and Alaska Fisher- 

 ies Center Processed Report (Hacker and Antonelis, 

 1986 9 ) and in full as a Masters Thesis from Oregon 

 State University (Sinclair, 1988). 



Literature cited 



Bailey, K., R. Francis, and J. Schumacher. 



1986. Recent information on the causes of variabil- 

 ity in recruitment of Alaska pollock in the eastern 

 Bering Sea: physical conditions and biological 

 interactions. Int. North Pac. Comm. Bull. 

 47:155-165. 



Bakkala, R. G., V. G. Wespestad, and J. J. Traynor. 



1987. Walleye pollock. In R. G. Bakkala and J. W. 

 Balsiger (eds.), Condition of groundfish resources 

 of the eastern Bering Sea and Aleutian Islands 

 region in 1986, p. 11-29. U.S. Dep. Commer, 

 NOAATech. Memo. NMFS F/NWC-117. 



Bigg, M. A., and I. Fawcett. 



1985. Two biases in diet determination of northern 

 fur seals (Callorhinus ursinus). In J. R. H. 

 Beddington, R. J. H. Beverton, and D. M. Lavigne 

 (eds.), Marine mammals and fisheries, p. 284- 

 299. George Allen and Unwin Ltd., London. 



9 Hacker, E. S., and G. A. Antonelis Jr. 1986. Pelagic food hab- 

 its of northern fur seals. In T. R. Loughlin and P. Livingston 

 (eds.), Summary of joint research on the diets of northern fur 

 seals and fish in the Bering Sea during 1985, p. 5-22. NWAFC 

 Proc. Rep. 86-19. Alaska Fish. Sci. Cent., NMFS, NOAA, 7600 

 Sand Point Way NE., BinC15700, Seattle, WA 98115-0070. 



Clarke, M. R. 



1962. The identification of cephalopod "beaks" and 

 the relationship between beak size and total body 

 weight. Bull. Br. Mus. (Nat Hist.) Zool. 8:419- 

 480. 



Clarke, M. R. (ed.) 



1986. A handbook for the identification of cepha- 

 lopod beaks. Clarendon Press, Oxford, 273 p. 



Dunn, J. R. 



1983. Development and distribution of the young 

 of northern smoothtongue, Leuroglossus schmidti 

 (Bathylagidae), in the Northeast Pacific, with com- 

 ments on the systematics of the genus 

 Leuroglossus Gilbert. Fish. Bull. 81(l):23-40. 



Fiscus, C. H., and H. Kajimura. 



1965. Pelagic fur seal investigations, 1964. U.S. 

 Fish. Wildl. Serv. Spec. Sci. Rep. Fish. No. 522, 47 

 p. Available: Alaska Fish. Sci. Cent., NOAA, 

 NMFS, 7600 Sand Point Way NE, BINC15700, 

 Seattle, WA 98115-00700. 



Fiscus, C. H., G. A. Baines, and F. Wilke. 



1964. Pelagic fur seal investigations, Alaska wa- 

 ters, 1962. U.S. Fish. Wildl. Serv. Spec. Sci. Rep. 

 Fish. No. 475, 59 p. Available: Alaska Fish. Sci. 

 Cent., NOAA, NMFS, 7600 Sand Point Way NE., 

 BINC15700, Seattle, WA 98115-0070. 



Fiscus, C. H., G. A. Baines, and H. Kajimura. 



1965. Pelagic fur seal investigations, Alaska, 

 1963. U.S. Fish. Wildl. Serv. Spec. Sci. Rep. Fish. 

 No. 489, 33 p. Available: Alaska Fish. Sci. Cent., 

 NOAA, NMFS, 7600 Sand Point Way NE., 

 BinC15700, Seattle, WA 98115-0070. 



Fitch, J. E., and R. L. Brownell Jr. 



1968. Fish otoliths in cetacean stomachs and their 

 importance in interpreting feeding habits. 

 J. Fish. Res. Board Can. 25(121:2561-2574. 



Fleiss, J. L. 



1981. Statistical methods for rates and proportions, 

 2nd ed. John Wiley & Sons, 321 p. 



Fowler, C. W. 



1985. An evaluation of the role of entanglement in 

 the population dynamics of northern fur seals on 

 the Pribilof Islands. In R. S. Shomura and H. W. 

 Yoshida (eds.). Proceedings of the workshop on the 

 fate and impact of marine debris; 27-29 Novem- 

 ber 1984, Honolulu, HI., p. 291-307. U.S. Dep. 

 Commer., NOAA Tech. Memo. NOAA-TM-NMFS- 

 SWFC-54. 



Fowler, C. W., and D. B. Siniff. 



1992. Determining population status and the use 

 of biological indices for the management of marine 

 mammals. In D. R. McCullough and R. H. 

 Reginald (eds.), Wildlife 2001: populations, p. 

 1051-1061. Elsevier Science Publishers. London, 

 England. 



Frost, K. J., and L. F. Lowry. 



1981. Trophic importance of some marine gadids in 

 northern Alaska and their body-otolith size 

 relationships. Fish. Bull. 79(1):187-192. 



