Tsuyuki, H. and S. N. Williscroft (1977).  Swimming stamina differences between 
genotypically distinct forms of rainbow Salmo gairdneri and steel-head trout. 
Journal of the Fisheries Research Board of Canada.  34:996-1003.
	
Rainbow trout Salmo gairdneri homozygous for liver lactate dehydrogenase alleles 
ldhH?A and ldhH?B were artificially propagated and their swimming stamina 
compared.  The time required to fatique 50% of the H?AH?A phenotypes in fixed 
water velocity tests was 2.3 times greater on the average than that of H?BH?B 
phenotypes.  Likewise, LDH phenotypes H?AH?A , H?AH?B , and  H?BH?Bof steelhead 
trout from the Thompson River were artificially propagated and their swimming 
stamina compared.  In contrast to the rainbow trout, significant differences in 
stamina among the three phenotypes of steelhead were not evident in the stocks 
from this river not between phenotypes H?AH?A and H?AH?A from another stream, 
the Vedder River, which has a very low frequency of the ldhH?A allele.  The 
stamina of young steelhead from the Thompson River was, however, 3.8 times 
greater than that of those from the Vedder River.