Table 10. --Recovery areas of tags released from traps 1n Lower Chatham Strait, 1938-39 and 1941-42. 



1938 

 7 July (EA-45) 

 6 Aug. (EA-45) 



9 Aug. (EA-45) 



12 Aug. (EA-45) 



Total 

 1939 

 16 July (EA-45) 

 4 Aug. (EA-45) 

 6 Aug. (EA-46) 



13 Aug. (EA-45) 



Total 

 1941 



10 Aug. (EA-45) 

 16 Aug. (EA-45) 



Total 

 1942 

 13 Aug. (EA-45) 



325 

 375 

 350 

 375 



1,425 



425 

 385 

 475 

 500 



1,785 



300 

 400 



700 



497 



0.0 



0.0 



0.0 



0.0 



1 0.3 47 14.5 8 2.5 



4 1.1 65 14.7 30 8.0 



1 0.3 124 35.4 12 3.4 



2 0.5 80 21.3 11 2.9 



0.0 56 17.2 



2.1 97 25.9 



0.6 139 39.7 



0.0 93 24.8 



0.0 



0.6 306 21.5 



61 



4.3 



10 



0.7 385 27.0 



0.0 0.0 2 0.5 112 26.4 



0.0 12 3.1 19 4.9 64 16.6 



0.0 10 2.1 63 13.3 40 8.4 



0.0 9 1.8 105 21.0 23 4.6 



8 1.9 122 28.7 



7 1.8 102 26.5 



8 1.7 121 25.5 

 2 0.4 139 27.8 



0.0 



31 1.7 189 10.6 239 13.4 



25 



1.4 484 27.1 



0.0 6 2.0 20 6.7 41 13.7 



0.0 1 0.3 20 5.0 37 9.3 



0.0 67 22.3 



0.0 58 14.5 



0.0 



7 1.0 40 5.7 



0.0 23 4.6 11 2.2 



78 11.1 



55 11.1 







0.0 125 17.9 



0.0 8! 



;9l^17.9 



— Does not include 68 tags which were recorded as trap recoveries and were accompanied by 

 the dates of recovery but not the locations. 



for tagged groups composed of a variety of racial 

 stocks spawning in streams located in different direc- 

 tions from the point of release. 



In spite of the considerable intraseasonal and in- 

 terseasonal variability observed, the following salient 

 features of these experiments are still of considerable 

 interest for determining management policy for 

 fisheries in southeastern Alaska. 



1. Results of these experiments confirm the find- 

 ings of other investigators showing the virtual separa- 

 tion for pink salmon management of southeastern 

 Alaska into a northern and a southern part with 

 Sumner Strait composing the northern boundary of 

 the southern part. 



2. The pink salmon stocks found in Icy Strait, up- 

 per Chatham Strait, and middle Chatham Strait 

 appear to be fairly distinct from those found in lower 

 Chatham Strait. There was only a limited exchange of 

 fish between lower Chatham Strait and middle 

 Chatham Strait. Fishing in Icy Strait, upper 

 Chatham Strait, and middle Chatham Strait would 

 not be expected to have a major effect on spawning es- 



capements in the lower Chatham Strait area and cor- 

 respondingly the fishery in lower Chatham Strait 

 would not have a great effect on the stocks from mid- 

 dle Chatham Strait, upper Chatham Strait, and Icy 

 Strait. Any effect would diminish with increasing dis- 

 tance moving northward from lower Chatham Strait. 



3. Stocks spawning in the watersheds adjoining 

 Frederick Sound and Stephens Passage use both Icy 

 Strait and lower Chatham Strait as major 

 passageways from the ocean. The numbers of fish 

 reaching Frederick Sound and Stephens Passage 

 would be influenced by the intensities of fishing along 

 both of these routes of entry. The experiments 

 reported here do not provide any information on the 

 relative numbers of fish using these two routes of en- 

 try. 



4. There was a strong intraseasonal trend in the 

 movement patterns. It was generally observed that 

 the earlier in the season the group was tagged, the 

 larger was the proportion of fish destined for spawning 

 grounds distant from the point of release. Usually fish 

 tagged later in the season exhibited a more restricted 

 range of movements about the point of release. 



23 



