MANZER: DISTRIBUTION AND FOOD OF STICKLEBACK 



Table 12.-Stomach contents of young sockeye salmon in Great Central Lake, October 1970-July 1971. 



'Mainly D. pulex. 



'Based on stomachs in which condition of contents permitted counts of various dietaries. 



3T = Trace = < 1% of bulk. 



Table 13.-Similarity in diet of threespine stickleback and young 

 sockeye salmon in the littoral zone, Great Central Lake, October 

 1970-July 1971. Similarity was measured by Spearman's rank 

 correlation coefficient (r,). Rotifers are excluded from the 

 calculations. 



Time period 



No. food items 

 considered 



October 1970 

 May-June 1971 

 July 1971 



11 



12 



8 



-0.068 

 0.629* 

 0.738* 



*Significant at P = 0.05. 



ACKNOWLEDGMENTS 



J. C. Mason and R. J. LeBrasseur read the 

 manuscript and offered valuable suggestions for 

 its improvement. 



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