Arctic char and Dolly Varden 49 



Other species 50 



General significance of predation 50 



Summary and significance for resource development 50 



Acknowledgments 52 



Literature cited '*. 



Figures 



1 . Naknek River system, Bristol Bay, Alaska 2 



2. Coville Lake, Naknek River system 5 



3. Weighted daily mean number of age and age I sockeye salmon per standard tow in Naknek River 

 system, 1 1 July to 29 August 1962 13 



4. Weighted daily mean number of age sockeye salmon per standard tow in Naknek River system 

 1961-64 H 



5. Weighted mean number of age sockeye salmon per standard tow, Naknek River system 1961-63. . 15 



6. Weighted mean number of age I sockeye salmon per standard tow, Naknek River system 1961-63. . 15 



7. Mean number of age sockeye salmon per standard tow, Naknek River system 1961-63 17 



8. Mean number of age sockeye salmon per standard tow, Coville Lake 1961-64 18 



9. Mean number of pond smelt per standard tow in Coville Lake 1961-63 24 



10. Mean number of threespine sticklebacks per standard tow. West End 1961-63 25 



1 1. Curves of apparent growth of age sockeye salmon captured in Coville Lake and Coville River 

 1961-64 ■ ■ ■ 34 



12. Length frequency distributions of juvenile sockeye salmon captured in Coville Lake and Coville 

 River, July and September 1961-63 34 



13. Length frequency distributions of juvenile sockeye salmon captured in Coville Lake and Coville 

 River, July and September 1964 35 



14. Curves of apparent growth of age sockeye salmon captured in Grosvenor Lake and Grosvenor River 

 1961-63 36 



15. Length frequency distributions of juvenile sockeye salmon captured in Grosvenor Lake and Gros- 

 venor River, July and September 1961-63 37 



16. Curves of apparent growth of age sockeye salmon captured in Uiuk Arm 1961-63 37 



17. Curves of apparent growth of age I sockeye salmon captured in Iliuk Arm 1961-63 37 



18. Length frequency distributions of juvenile sockeye salmon captured in Iliuk Arm, July and August 

 1961-63 38 



19. Curves of apparent growth of age sockeye salmon captured in South Bay 1961-63 39 



20. Curves of apparent growth of age I sockeye salmon captured in South Bay 1961-63 39 



21. Length frequency distributions of juvenile sockeye salmon captured in South Bay, July and August 

 1961-63 40 



22. Curves of apparent growth of age sockeye salmon captured in West End 1962-63 41 



23. Length frequency distributions of juvenile sockeye salmon captured in West End, July and August 

 1961-63 42 



24. Curves of apparent growth of age sockeye salmon captured in Brooks Lake 1961-63 43 



25. Length frequency distributions of threespine sticklebacks captured in the Naknek River system 

 1961-64 45 



26. Length frequency distributions of ninespine sticklebacks captured in the Naknek River system, 1961, 

 1963, and 1964 46 



27. Length frequency distributions of pond smelt captured in the Naknek River system, 1961, 1963, and 

 1964 47 



Tables 



Area of lakes of the Naknek River system 3 



i v 



