TABLE 1.— Catch of dogfish in thousands of pounds^ 



■"" The livers only were landed from a large portion of the catch. Because of the varied 

 methods which have been used in computing whole weights and reporting landings, the 

 values shown are estimates only. 



^ Fishery Statistics of the United States, U. S. Fish and Wildlife Service Statistical 

 Digest Nos. 1, 4, 7, 11, 14, 16, 18, 19, 21, 22, 25, 27, 30, 34, 36, 39, 41, 43, 44, and 

 49. 



^ Fishery Statistics of Canada, 1937-51. Total pounds of dogfish caught = pounds of 

 livers landed x 8.33. 



* Alaska Fishery and Fur Seal Industries, 1937-54. 

 5 Holland ( 1957) . 



* Fishery Statistics of British Columbia (Preliminary), 1952-59. Total pounds of dog- 

 fish caxight = pounds of livers landed x ^.32. 



During the early phases of the English 

 fishery, difficulty was encountered in over- 

 coming public prejudice against using sharks 

 as human food. The obstacle was partially 

 overcome by introducing the market name 

 "flake", a name later adopted in the United 

 States and Canada along with "grayfish". 



Regardless of the somewhat low protein 

 content of dogfish meat, use of dogfish for 

 human food in Europe has increased rapidly. 

 Since the end of World War II, the growing 

 interest in dogfish has skyrocketed landings 

 in Great Britain and Norway. Approximately 



88 million pounds of dogfish were marketed 

 in Europe in 1955. 



Dogfish landed in Europe for human food 

 are gutted and skinned at sea. In Great Britain, 

 the catch is auctioned at the docks along with 

 other food fish and is marketed extensively 

 in the fish-and-chip trade. Smoked dogfish 

 are used, to some extent. 



EFFECTS OF FISHING ON DOGFISH 



The actual changes occurring in stock abun- 

 dance during the period of intense fishing 



