Fishery Bulletin 



CONTENTS 



Vol. 86, No. 4 



October 1988 



MENDELSSOHN, ROY. Some problems in estimating population sizes from catch- 

 at-age data 617 



BAYLIFF, WILLIAM H. Integrity of schools of skipjack tuna, Katsuwonus pelamis, 

 in the eastern Pacific Ocean, as determined from tagging data 631 



CASTRO, MARGARIDA, and KARIM ERZINI. Comparison of two length-frequency 

 based packages for estimating growth and mortality parameters using simulated 

 samples with varying recruitment patterns 645 



LIN, BIING-HWAN, and NANCY A. WILLIAMS. Specifying a functional form for 

 the influence of hatchery smolt release on adult salmon production 655 



BEACHAM, TERRY D., CLYDE B. MURRAY, and RUTH E. WITHLER. Age, morphol- 

 ogy, developmental biology, and biochemical genetic variation of Yukon River fall chum 

 salmon, Oncorhynchus keta, and comparisons with British Columbia populations .... 663 



YANG, M. S., and R A. LIVINGSTON. Food habits and daily ration of Greenland halibut, 

 Reinhardtius hippoglossoides, in the eastern Bering Sea 675 



CROSS, JEFFREY N. Aspects of the biology of two scyliorhinid sharks, Apristurus 

 brunneus and Parmaturus xaniurus, from the upper continental slope off southern 

 California 691 



SHANKS, ALAN L. Further support for the hypothesis that internal waves can cause 

 shoreward transport of larval invertebrates and fish 703 



HOBSON, EDMUND S., and JAMES R. CHESS. Trophic relations of the blue rockfish, 

 Sebastes mystinus, in a coastal upwelling system off northern California 715 



GRIMES, CHURCHILL B., CHARLES F IDELBERGER, KENNETH W ABLE, and 

 STEPHEN C. TURNER. The reproductive biology of tilefish, Lopholatilus chamae- 

 leonticeps Goode and Bean, from the United States Mid-Atlantic Bight, and the effects 

 of fishing on the breeding system 745 



HARGRE AVES, N. B. A field method for determining prey preferences of predators . . . 763 



FORD, RICHARD F, BRUCE F PHILLIPS, and LINDSAY M. JOLL. Experimental 

 manipulation of population density and its effects on growth and mortality of juvenile 

 western rock lobsters, Panulirus cygnus George 773 



BARSHAW, DIANA E., and DONALD R. BRYANTRICH. A long-term study on the 

 behavior and survival of early juvenile American lobster, Homarus americanus, in 

 three naturalistic substrates: eelgrass, mud, and rocks 789 



{Continued on next page) 



Seattle, Washington 

 1988 



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Marine Biological Laboratory 

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JUL 7 1989 



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