PACIFIC SALMON FISHERIES. 17 
It had been supposed that the other species did not feed when in 
coastal waters, but Marsh and Cobb @ state quite differently: 
Other species of salmon, in addition to the king, are found to take the trolling hook. 
For several weeks in July trollers in Union Bay, in southeast Alaska, caught a number 
of cohos and humpbacks while trolling for kings. The humpbacks were caught 
mainly with aspoon, no bait being used. Most of them appeared to have been feeding 
on needlefish and herring, according to the cutter who dressed them. A few re 
salmon are reported to have been caught on the trolling line by fishermen operating 
for king salmon in the neighborhood of Mary Island, near Dixon Entrance. Several 
fishermen report having in previous years frequently taken dog salmon on a hook in 
the bays along Chatham Strait. 
In 1909, Mr. J. R. Heckman, of Ketchikan, Alaska, a well-known 
cannery man, told the writer that, while he was trying to install a 
floating trap near Cape Chacon, at the lower end of Prince of Wales 
Island, southeast Alaska, he on several occasions observed red salmon 
feeding on what he called a red shrimp. 
This was also observed in 1912, when Dr. Gilbert reported, in con- 
nection with his observations of salinon fishing on Swiftsure Bank, of 
the Straits of San Juan de Fuca, that ‘‘during the past summer it 
was observed by Mr. J. P. Babcock and the writer that the sockeye on 
the Bank were feeding extensively on a small shrimp-like crustacean 
(Thysanoessa spinifera, Holmes), which floats in incredible numbers 
on the tides and forms a favorite food for the other species as well as 
for the sockeye.’ ® He also found all the other species feeding vora- 
ciously in this neighborhood. 
The experience of the fishermen operating in and off Port Moller, 
in Bering Sea, also affords confirmatory evidence along this line. A 
cannery was established on Port Moller in 1913, the avowed purpose 
of the owners being to catch what they claimed would be the enor- 
mous schools which annually resort to the great rivers of Bristol Bay, 
some 210 miles to the eastward from Port Moller. This cannery made 
a fairly large pack for a season or two, using purse seines in Bering 
Sea and traps along the shore. Misled by this, three other canneries 
were built in 1916 and 1917. In a season or two the catches of the 
combined plants had dropped to much less than the catch of the one 
cannery ob operating alone, thus showing that the fishermen were 
operating on a run which was local to that neighborhood. This is 
borne out by the fact that the Bristol Bay runs showed no appreciable 
diminution when the catch was lowest at Port Moller. The pack of 
the Port Moller canneries follows. 
Pack OF THE Port MOLLER CANNERIES. 
| 
Number Number 
Year. of can- Aree Year. | of can- ae 
neries. 1A neries. | P&cKed. 
1QISELI I Othe tL 1 ASST SON ALO Lies Ree eee eee 4 39, 688 
fe ES AN NT 1 S717, AOS. Pahsdds sg.) ..-2esst. 4 : 
Te pie in 8 Rete 1 CZ | i on 2 29) 849 
TTT, Speers ae a ea 2 132/367 ||. 
a The Fisheries of Alaska in 1909. By Millar C.Marsh and John N. Cobb. U.S. Bureau of Fisheries 
Document No. 730, p. 26. Washington, 1910. 
b The Salmon on Swiftsure Bank. By Charles H. Gilbert. Report of British Columbia Commissioner 
of Fisheries for Year ending Dec. 31, 1912, and Appendix, p.116. Victoria, British Columbia. 
11312°—21——-2 
