FISHERY BULLETIN: VOL. 71, NO. 4 



Table 3. — Geometric mean beach seine catches in Lake Aleknagik by area and year for the 



period 20 June- 19 July 1962, 1964 through 1972. 



by the normal distribution; however the vari- 

 ability in length in area C was more than in the 

 other areas. This part of the lake tends to warm 

 up earlier in the spring and has a lower abun- 

 dance of fry. Mean lengths were calculated for 

 20 June and 20 July from the regression para- 

 meters in Table 5. These lengths represent the 

 sizes of fish at the beginning and end of early 

 summer, when sockeye salmon fry were abun- 

 dant inshore. The fry were of similar length in 

 the lake areas on 20 June, but had become lar- 

 ger in area C than in the others by 20 July 

 (Table 6). 



Sockeye salmon fry were more abundant in 

 areas A and B than in area C, apparently be- 

 cause the major spawning ground, Agulowak 



River, is located here. They were more abundant 

 at the stations adjacent to spawning grounds 

 than at those stations located elsewhere. Most 

 spawning occurs from early August to mid- 

 September. The fry emerge from the gravel from 

 late winter to early spring, and most are in the 

 lake by early June. 



Regressions in In mean catch on coded date 

 (23 June = 1, 1 July = 9, etc.) were calculated 

 for the entire period of sampling (20 June-5 

 August) and for all periods except the first 

 period (Table 7). The latter results appeared 

 to have greater consistency than the former 

 and indicated that fish were perhaps less avail- 

 able in early spring than later. Catches of sock- 

 eye salmon fry declined at a greater rate than 



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