10 U. S. BUREAU OF FISHEEIES. 



Summary, by species, of net output of fish and fisli eygs, fiscal year 192S — Con. 



EGG COLLECTIONS. 



The bureau's principal source of egg supply is the commercial 

 fisheries, where vast numbers of eggs of valuable fishes would an- 

 nually be wasted were it not for the bureau's work. In most in- 

 stances they are transported to the hatcheries for incubation; but in 

 the case of the offshore fisheries on the New^ England coast the 

 spawm takers sent out to salvage the eggs fertilize and plant them 

 on the spaAvning grounds, as it is impracticable to hold the spawn 

 until the vessels return to port. In some cases eggs are taken from 

 fish caught in nets and traps and are artificially impregnated and 

 incubated in the hatchery, this being done to insure a higher degree 

 of fertility than would be possible under natural conditions of 

 spawning. 



A decrease of approximately 991,000,000 is shown in the total egg 

 collections as compared with those of the previous year. This de- 

 crease is explained partly by the prevalence of unfavorable weather 

 during the spawning season of some of the fishes handled, and 

 partly by lack of funds necessary to take full advantage of the 

 opportunities for obtaining eggs in one or two instances. 



Comparison of egg collections, fiscal years 1923 and 1922. 



Species. 



Buffalofish 



Carp 



Shad ... 



Glut herring ' 



Whitefish 



Cisco 



Pilot fish 



Chinook salmon 



Chum salmon 



Humpback salmon _ 



Silver salmon 



Sockeye salmon 



Steelhead salmon.. . 



Atlantic salmon 



Landlocked salmon. 



Rainbow trout 



Black-spotted trout 



1923 



179, 173, 600 



160, 500, 000 



17,877,000 



313, 422, 620 



537, 546, 000 



76, 800, 000 



255, 000 



30, 889, 000 



26, 513, 500 



1. 099, 200 



15,159,800 



97, 886, 000 



7, 946, 300 



852. 350 

 11,488,410 

 16, (i55, 820 



199. 906, 250 

 98, 000, 000 

 82, 579, 000 

 116,920,000 

 623, 100, 000 

 429, 900, 000 



64, 7,56, 100 



22, 830, 000 



1, 722, 000 



13, 618, .500 



119,214,350 



7, 302, 800 



572, 040 



445, 000 



11,210.500 



9, 220. 300 



Species. 



Loch Leven trout _ 



Lake trout. _ 



Brook trout 



Smelt 



Mackerel 



Pike perch 



Yellow perch 



Striped bass. 



Sea bass , 



Scup 



Cod 



Haddock 



Pollock... 



Winter flounder.. 

 Pole flounder 



1923 



77, 775, 890 

 19, 109, 040 

 42, 000, 000 



230, 040. 000 

 151, 010, 000 

 22, 084, 000 



1, 279, 709, 000 

 109, 220, 000 

 420, 536, 000 



1,391,411,000 



109, 870 

 67, 426, 500 

 17, 9S6, 250 



300, 000 



2, 022, 000 

 254, 717, 5tO 

 277,501,870 



48, 745, 000 

 32, 000 



3, 425, 000 

 587, 426, 000 

 54.3,110,000 

 507, 270, 000 



2,312,029,000 

 5, 090, 000 



Total 5, 437, 057,-660 j 6,428,487,830 



