37 6 DISCOVERY REPORTS 



proportion of whales dispersing with the lapse of time increases. 34% of the short-term recoveries 



have dispersed compared with 60% of the long-term recoveries. 



Migration from the coast of Brazil to South Georgia has been demonstrated. 



5. It is suggested that dispersal may take place among the younger whales of the population 

 rather than among older whales. 



6. Some Blue whales apparently return to the area of marking year after year, but a higher pro- 

 portion of marked whales show dispersal than is the case in Fin whales. Blue whales disperse over 

 greater distances than Fin whales, one having moved through almost 87 of longitude. In view of 

 the small number of returns from this species it is not possible to say whether the range of dispersal 

 is limited, nor whether the proportion of whales dispersing with the lapse of time increases. 



7. The movements of Fin and Blue whales between the Antarctic whaling areas are discussed. 

 Fin whales are shown to have moved between Areas I and II, II and III, and III and IV, and Blue 

 whales between Areas III and IV. It is suggested that the boundary between Areas II and III is 

 more definite than that between Areas III and IV, and that there may be a significant exchange of 

 individuals between the populations of Areas I and II. 



REFERENCES 



Bergersen, B., Lie, J. & Ruud, J. T., 1939. Pelagic Whaling in the Antarctic. VIII. The Season 1937-38. Hvalradets Skrifter, 



No. 20, pp. 1-42, text-figs. 1-6, pis. 1-2. 

 Bergersen, B. & Ruud, J. T., 1941. Pelagic Whaling in the Antarctic. IX. The Season 1938-39. Hvalradets Skrifter, No. 25, 



pp. 1-46, text-figs. 1-9, pis. 1-2. 

 Conseil Permanent International pour I' exploration de la Mer. Rapports et Proces-Verbaux des Reunions, 1947, cxvii, p. 43. 

 Hjort, J., Lie, J. & Ruud, J. T., 1932. Norwegian Pelagic Whaling in the Antarctic. I. Whaling Grounds in 1929-1930 and 



1930-1931. Hvalradets Skrifter, No. 3, pp. 1-37, charts 1-6. 



- 1933 a. Norwegian Pelagic Whaling in the Antarctic. II. Hvalradets Skrifter, No. 7, pp. 128-52, text-figs. 75-80, 



pis. 1-6. 

 — 19336- Norwegian Pelagic Whaling in the Antarctic. III. The Season 1932-1933. Hvalradets Skrifter, No. 8, pp. 1-36, 

 text-figs. 1-9, pis. 1-2. 



- 1934. Pelagic Whaling in the Antarctic. IV. The Season 1933-34. Hvalradets Skrifter, No. 9, pp. 1-59, text-figs. 1-10, 



pis. 1-7. 



1935. Pelagic Whaling in the Antarctic. V. The Season 1934-35. Hvalradets Skrifter, No. 12, pp. 1-52, text-figs. 1-7, 



pis. 1-2. 



- 1937. Pelagic Whaling in the Antarctic. VI. The Season 1935-36. Hvalradets Skrifter, No. 14, pp. 1-45, text-figs. 1-7, 



pis. 1-2. 



1938. Pelagic Whaling in the Antarctic. VII. The Season 1936-37. Hvalradets Skrifter, No. 18, pp. 1-44, text-figs. 1-6, 



pis. 1-2. 



International Whaling Statistics, 1930-53, i-xxx. Det Norske Hvalrads Statistiske Publikasjoner. Edited by the Committee 

 for Whaling Statistics. 



Mackintosh, N. A., 1942. The Southern Stocks of Whalebone Whales. Discovery Reports, xxn, pp. 197-300, text-figs. 1-9. 



Rayner, G. W., 1940. Whale Marking: Progress and Results to December 1939. Discovery Reports, xix, pp. 245-84, text- 

 fig. 1, pis. xliii-lxviii. 



- 1948. Whale Marking II: Distribution of Blue, Fin and Humpback Whales marked from 1932 to 1938. Discovery Reports, 



xxv, pp. 31-38, text-fig. 1, pis. v-xxii. 

 Schubert, K., 1953. Gibt es ein Bartenwal-Schongebiet im Siidliclien Eismeer? Die Fischwirtschaft, Vol. 5, April, p. 103. 



