from fur seal stomachs for the first time 

 since collecting began in 1958. 



The data fron-i 1963 stomach collections 

 verified the conclusion that seals are pri- 

 marily night and early morning feeders. 



Surface water temperature varied from 5° 

 to 11° C. during the 1963 field season. Fur 

 seal distribution was apparently not directly 

 regulated by temperature. 



The ranking food items by volume and the 

 frequency with which they were found in fur 

 seal stomachs in 1963 were: Squid (>630), 

 Mallotus (140), Theragra (47), Bathylagidae 

 (92), Clupea (15), Pleurogrammus (13), and 

 Oncorhynchus sp. (14). 



Nonfood items in stomachs were gastropod 

 and pelecypod fragments, crustaceans, isopods, 

 and pebbles. 



Three fish eaten by fur seals, Clupea , 

 Oncorhynchus , and Theragra , are fished com- 

 mercially in the Bering Sea. The effect of 

 fur seals upon Clupea and Oncorhynchus is 

 not clear but appears to be negligible. The 

 decline of Theragra coincides with heavy 

 fishing pressure by trawlers. 



EVERMANN, BARTON WARREN, and ED- 

 MUND LEE GOLDSBOROUGH. 

 1906. The fishes of Alaska. [U.S.] Bureau 

 of Fisheries Document 624, p. 219-360, 

 pi. 23 to 42. 



FISCUS, CLIFFORD H., GARY A. BAINES, 

 and FORD WILKE. 

 1964. Pelagic fur seal investigations, Alas- 

 kan waters, 1962. U.S. Fish and Wild- 

 life Service, Special Scientific Report-- 

 Fisheries No. 475, 59 p. 



JORDAN, DAVID STARR, and CHARLES HEN- 

 RY GILBERT. 

 1899. The fishes of Bering Sea. In The 

 fur seals and fur-seal islands of the 

 North Pacific Ocean. U.S. Treasury 

 Department Document 2017, Part 3, 

 p. 440-441. 



KENYON. KARL W, 



1956. Food of fur seals taken on St. Paul 

 Island, Alaska, 1954. Journal of Wild- 

 life Management, vol. 20, no. 2, p. 214- 

 215. 



LITERATURE CITED 



ANDRIASHEV, ANATOLY P. 



1937. A contribution to the knowledge of 

 the fishes from the Bering and Chukchi 

 Seas. Hydrographical Institute, Lenin- 

 grad, Exploration des mers de I'URSS, 

 fasc. 25, p. 292-355. (Translated by 

 Lisa Lanz and N. J. Wilimovsky, U.S. 

 Fish and Wildlife Service, Special Scien- 

 tific Report--Fisheries No. 145, 81 p. 

 1955.) 



BERRY, S. S. 



1912. A review of the cephalopods of western 

 North America. Bulletin [U.S.] Bureau 

 of Fisheries, vol. 32, p. 257-362. 



BEST, E. A. 



1963. Greenland halibut, Reinhardtius hip- 

 poglossoides (Walbaum), added to Cali- 

 fornia fauna. California Fish and Game, 

 vol. 49, no. 3, p. 213-214. 



CHAPMAN, W. M. 



1943. The osteology and relationships of the 

 bathypelagic fishes of the genus Bathy- 

 lagus Gunther with notes on the system- 

 atic position of Leuroglossus stilbius 

 Gilbert and Therobromus callorhinus 

 Lucas. Journal of the Washington Aca- 

 demy of Sciences, vol. 33, no. 5, p. 147- 

 160. 



CLEMENS, W. A., and G. V. WILBY. 



1961. Fishes of the Pacific Coast of Canada. 

 Fisheries Research Board of Canada, 

 Bulletin No. 68 (2d edition), 368 p. 



KENYON, KARL W., and FORD WILKE. 



1953. Migration of the northern fur seal, 

 Callorhinus ur sinus . Journal of Mam- 

 nnalogy, vol. 34, no. 1, February, p. 86- 



ROPPEL, ALTON Y.. ANCEL M. JOHNSON, 

 RICHARD D. BAUER, DOUGLAS G. CHAP- 

 MAN, and FORD WILKE. 

 1963. Fur seal investigations, Pribilof Is- 

 lands, Alaska, 1962. U.S. Fish and 

 Wildlife Service, Special Scientific Re- 

 port--Fisheries No, 454, 101 p. 



SASAKI, MADOKA. 



1929. A monograph of the dibranchiate ce- 

 phalopods of the Japanese and adjacent 

 waters. Journal of Faculty of Agricul- 

 ture, Hokkaido Imperial University, 

 Sapporo, vol. 20, suppl., 357 p., 30 pis. 



SCHULTZ, L. P. 



1936. Keys to the fishes of Washington, 

 Oregon, and closely adjoining regions. 

 University of Washington Publications 

 in Biology, 4th printing, 1953, vol. 2, 

 no. 4, p. 103-228. 



TAYLOR, F. H. C, M. FUJINAGA, and FORD 



WILKE. 



1955. Distribution and food habits of the 



fur seals of the North Pacific Ocean. 



U.S. Department of the Interior, Fish 



and Wildlife Service, Washington, 86 p. 



TOWNSEND, C. H. 



1899. Pelagic sealing. In The fur seals 

 and fur-seal islands of the North Pacific 

 Ocean. U.S. Treasury Department Doc- 

 ument 2017, Part 3, p. 223-274. 



