Contents 



Foreword iii 



Preface v 



Effects of Long-Term Exposure to Supersaturation of Dissolved Atmospheric 

 Gases on Juvenile Chinook Salmon and Steelhead Trout in Deep and Shallow 



Test Tanks 1 



E. M. Dawley, M. Schiewe, B. Monk 



Gas Supersaturation Research National Marine Fisheries Service 



Prescott Facility— 1971 to 1974 11 



T. H. Blahm, B. McConnell, G. R. Snyder 



Equipment and Techniques for Monitoring the Vertical Distribution of Fish 



in Shallow Water 20 



W. Marshall 



Dissolved Gas Supersaturation: Live Cage Bioassays at Rock Island Dam, Washington 24 



D. E. Weitkamp 



Supersaturation and Fishery Observations in Selected Alpine Oregon Streams 37 



G. R. Bouck 



Some Effects of Excess Dissolved Gas on Squawfish, Ptychocheilus oregonensis 



(Richardson) 41 



W. W. Bentley, E. M. Dawley, T. W. Newcomb 



Responses of Coho Salmon (Oncorhynchus kisutch) to Supersaturation at 



One Atmosphere 47 



D. Beyer, B. G. D'Aoust, L. Smith 



Effects of Gas Supersaturated Water on Freshwater Aquatic Invertebrates 51 



A. V. Nebeker, D. G. Stevens, j. R. Brett 



A Study of the Pathogenesis of Gas Bubble Disease in Steelhead Trout 



(Salmo gairdneri) 66 



R. K. Stroud, A. V. Nebeker 



Effect of Temperature on Tolerance to Dissolved Gas Supersaturation of Black 



Bullhead, Ictalurus melas 72 



D. H. Fickeisen, j. C. Montgomery, R. W. Hanf, jr. 



Gas Bubble Disease Mortality of Atlantic Menhaden, Brevoortia Tyrannus, at a 



Coastal Nuclear Power Plant 75 



R. A. Marcello, Jr., R. B. Fairbanks 



Observations on the Effects of Gas Embolism in Captured Adult Menhaden 81 



A. Clay, A. Barker, S. Testaverde, R. Marcello, G. C. McLeod 



VII 



