176 



FISHERY BULLETIN OF THE FISH AND WILDLIFE SERVICE 



The numbers of fish landed in 1934 as compared 

 with 18-year averages were: scrod 8,024,000 

 (18,214,000), large 11,311,000 (18,661,000), total 

 haddock 19,335,000 (36,875,000). 



In addition to such yearly deviations, seasonal 

 deviations for 1934 can be compared with average 

 seasonal values, and subarea contributions can be 

 evaluated in terms of average subarea contribu- 

 tions. 



6. For a rapid evaluation of how each of the 18 

 years deviate in the more important characteristics 

 from the average year, table 37 has been prepared. 

 Shown are the percentages that the individual 

 years are above or below the 18-year average; 



pounds, nimibers, and average weights are treated, 

 for large, scrod and total haddock. 



7. The data in this paper serve (1) as a record 

 of the total landings of haddock from Georges 

 Bank in terms of pounds, average weights, num- 

 bers and sizes of scrod, large, and total haddock, 

 by seasons and years over the 18-year period, 

 1931 to 1948; and (2) as a basis for developing 

 other data, among which wUl be the age composi- 

 tion of the landings; the size of various ages; 

 year class contributions; and estimates of the 

 relative size of the stock on the banks, of rates of 

 dechne of year classes, and of mortahty rabes. 



Table 37. — Percentage deviations of quantities and average weights from the average year 



Pounds: 



Scrod 



Large 



Total 



Numbers: 



Scrod 



Large 



Total-.- 



Average weights (pounds) 



Scrod 



Large 



Total 



1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 194S 1946 1947 1948 



-43.2 

 53.8 

 22.1 



-39.4 

 50.5 

 6.1 



-6.2 

 2.2 

 15.1 



2.3 

 16.6 

 11.9 



-3.5 

 17.4 

 7.1 



6.0 



-.7 

 4.5 



-38.0 



-.9 



-13.3 



-35.7 



2.8 



-16.2 



-5.1 



-3.6 



3.4 



-57.9 

 -41.8 

 -47.0 



-55.9 

 -39.4 

 -47.6 



-4.3 



-4.0 



1.0 



-17.1 

 -15.4 

 -15.9 



-16.4 

 -9.4 

 -12.4 



-1.9 

 -6.6 

 -4,0 



-2.7 

 -14.7 

 -10.8 



1.2 

 -9.1 

 -4.0 



-3.8 

 -6.2 

 -7.1 



1.0 

 1.5 

 1.3 



-2.4 



.5 



-.9 



3.4 

 1.0 

 2.3 



29. 



-17. 



-1. 



30. 



-24. 



2. 



40.1 

 -3.2 

 11.0 



38.1 



.2 



18.9 



1,4 

 -3.3 



-5.7 



-3.9 



-.6 

 -1.6 



-.6 

 -5.2 



6.7 







3.7 



60.7 

 -9.1 

 13.7 



53.8 

 -7.6 

 22.7 



4.5 

 -1.7 

 -7.4 



21.1 

 -17. 

 -4. 



17.: 

 -13.1 



1.. 



3.! 

 -4. 



-6.; 



-50.5 



27.4 



1.9 



-52.8 



31.5 



-10. I 



4.8 

 -3.2 

 13.4 



-62. 



5. 



-16. 



-59. 



2. 



-28. 



-6. 

 2. 



16. 



-31.4 

 30.5 

 10.3 



-29.4 



31.4 



1.4 



-2.9 

 -.6 

 8.8 



32.8 

 1.5 

 11.8 



34.4 

 -7.3 

 13.3 



-1.2 



9.4 



-1.4 



44.7 

 -22.8 



-.7 



50.8 



-26.5 



11.6 



-4.0 



5.1 



-11.1 



LITERATURE CITED 



Herrington, William C. 



1933. Conservation of immature fish in otter trawling. Trans. Amer. Fish. Soc, vol. 62 (1932), pp. 57-63. 



1935. Modifications in gear to curtail the destruction of undersized fish in otter trawling. Bureau of Fisheries, U. S. 

 Dept. Commerce, Investigational Report No. 24, 48 pp. 



1936. Decline in haddock abundance on Georges Bank and a practical remedy. Bureau of Fisheries, U. S. Dept. 

 Commerce, Fishery Circular No. 23, 22 pp. 



1941. A crisis in the haddock fishery. Fish and Wildlife Service, U. S. Dept. Interior, Fishery Circular No. 4, 14 pp. 

 1944. Factors controlling population size. Trans. Ninth North Amer. Wildlife Conf., 1944, pp. 250-263. 



1948. Limiting factors in fish production. Some theories and an example. Bulletin, Bingham Oceanographic Col- 

 lection, vol. 11, Article 4, pp. 229-283. 



McKenzie, R. a. 



1946. The haddock fishery of grounds fished by Canadians. Bull. 69, Fish. Res. Bd. Can., 1946, 30 pp. 

 Needler, a. W. H. 



1930. The migrations oi haddock and the interrelationships of haddock populations in North American waters. 

 Contr. Canad. Biol. Fish., N. 8., vol. 6, No. 10, 1930, pp. 243-313. 



Rounsefell, George A. 



1942. Field experiments in selecting the most efficient tag for use in haddock studies. Trans. Amer. Fish. Soc, vo^. 

 71, 1941, pp. 228-235. 



1948. Development of fishery statistics in the North Atlantic. U. S. Fish and Wildlife Service, Spec. Sci. Report 

 No. 47, 18 pp. 



Russell, E. S. 



1942. The overfishing problem. Cambridge Univ. Press, London, 1942, 130 pp. 

 Schroeder, William C. 



1942. Results of haddock tagging in the Gulf of Maine from 1923 to 1932. Sears Foundation: Jour. Marine Res., 

 vol. 5, No. 1, June 1942, pp. 1-19. 



ScHucK, Howard A. 



1949. Relationship of catch to changes in population size of New England haddock. Amer. Stat. Assn.: Biometrics, 

 vol. 5, No. 3, Sept. 1949, pp. 213-231. 



ScHucK, Howard .\., and Edgar L. Arnold, Jr. 



1951. Comparison of haddock from Georges and Browns Banks. U. S. Fish and Wildlife Service, Fishery Bulletin 

 67, vol. 52, pp. 177-185. 



