34 



COMMERCIAL FISHERIES REVIEW 



Vol. 28, No. 8 



oils and 9,859 tons of fish meal was produced 

 in the United States. Con^p-^T-'^^'. with April 

 1965, this was a decrease of 4,723,000 pounds 

 of marine aninnal oils and 922 tons of fish 

 meal and scrap. Fish solubles production a- 

 mounted to 3,627 tons--an increase of 450 

 tons as compared with April 1965. 



U. S. FISH MEAL AND SOLUBLES : 



Production and Imports , January - April 

 1966 : Based on domestic production and im- 

 ports, the United States available supply of 

 fish meal for the first 4 months in 1966 a- 

 mounted to 133,262 short tons--20,609 tons 

 (or 13.4 percent) less than during the same 

 period in 1965. Domestic production was 658 

 tons (or 3.5 percent) higher but imports were 

 21,267 tons (or 15.8 percent) lower than in 

 January-April 1965. Peru continued to lead 

 other countries with shipments of 71,200tons-. 



U. S. Supply of Fish Meal and Solubles, January- April 1966 



Item 



Jan.-Apr. 



Total 



1966 1 1965 



1965 



Fish Meal and Scrap; 

 Domestic production: 



....(£ 



5,090 



9,362 



883 



4,285 



hort Tons 



7,468 

 7,222 

 1,275 

 2,997 



). . . . 



175,838 

 25,410 

 12,859 

 39,264 



Tuna and mackerel 



Herring 



Other 





Total production 



19,620 



18.962 



253.371 



Imports: 



13,768 



71,200 



22,319 



22 



955 



5,378 



14,059 



114,138 



3,458 



700 

 2,554 



43,830 



209,801 



5,651 



78 



5,100 



6,206 





Chile '. . . 













113,642 



134,909 



270,666 





Available fish meal supply . . . 



133.262 



153.871 



524.037 



Fish Solubles 1 /: 

 Domestic production 



8.898 



5.606 



98.017 



Imports: 



636 



33 



1,213 



706 

 2,133 



1,488 

 3,650 



Iceland 



Other countries 



Total imports 



1.882 



2,839 



5.138 



Available fish solubles supply 



10,780 



8,445 



103,155 



WWet weight basis except for imports from 



countries"). 

 Source: U, S. Department of the Interior, I 

 Department of Commerce, Bureau of the C 



outh Africa Republic (inck 



ureau of Commercial Fishe 

 ensus. 



ded in "other 

 ies, and U.S. 



The United States supply of fish solubles 

 during January-April 1966 amounted to 10,780 

 tons --an increase of 27.6 percent as com- 

 pared with the same period in 1965. Domes- 

 tic production of fish solubles increased 58.7 

 percent and imports offish solubles decreased 

 33.7 percent. 



Inland Fisheries Explorations 

 and Gear Development 



OAHE RESERVOIR TRAWLING STUDIES: 



Reservoir Research Vessel '' Hiodon " 

 Cruise 6_(May 1966): Another experimental 

 trawling cruise was made in the Oahe Reser- 

 voir in South Dakota, located on the Upper 

 Missouri River. Trawling operations by the 

 reservoir fishery research vessel Hiodon, 

 operated by the Department of the Interior's 

 Bureau of Commercial Fisheries, were con- 

 ducted in Zones 4, 5, 6, 7, 8, and 9 during 

 May 1966. 



FISHING OPERATIONS: A total of 76 drags 

 was niade with 35-, 45-, and 52-foot (headrope) 

 trawls. The drags varied from 5 to 15 min- 

 utes duration and were m.ade during daylight 

 hours. Seven drags were incomplete due to 

 fouling of the nets. No drags were attempted 

 in Zone 5 as suitable areas were not located. 

 One drag was attempted in Zone 7 but could 

 not be completed. Also, an attempt to trawl 

 in Zone 10 (Missouri River above the im- 

 pounded water) was unsuccessful as it was not 

 possible to proceed upstream beyond theCan- 

 nonball River in North Dakota. 



FISHING RESULTS: The 76 drags (40 of 5- 

 minute duration; 2 of 10-minute; and 34 of 15- 

 minute) took a total of 6,260 fish (age group 

 II or older) that weighed 6,404 pounds for an 

 average of 82 fish or 84 pounds per drag. 

 Carp (average weight 2.0 pounds) comprised 

 74.6 percent of the catch by weight. 



Only three species comprised over 2.0 per- 

 cent of the catch by weight in Zone 4. These 

 were: carp 86.3 percent; perch 5.7 percent; 

 and bigmouth buffalo 2.4 percent. 



In Zone 6, carp and bigmouth buffalo made 

 up 68.1 and 5.0 percent of the weight, respec- 

 tively. In addition, drum made up 8.0 per- 

 cent; carpsuckers 6,4 percent; goldeye 3.4 

 percent; and channel catfish 2.5 percent. e 



In the upper portion of the reservoir (Zones 

 8 and 9), the weight composition was: carp 

 51.6 percent; c arp sue ke r 19.3 percent; 

 shovelnose sturgeon 12.7 percent; goldeye 

 7.3 percent; bigmouth buffalo 2.9 percent; 

 and sauger 2.5 percent. 



A total of 419 yearling fish was taken--38 

 percent were white bass, 21 percent perch, 

 and 17 percent goldeye. Also taken (in order 



