Translation Series No.1211

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- 52- ce,.,td.es in the Baltic Sea. Later on we shall discuss the changes in the -eap-turen per unit effort as expression for the fluctuations in the stock. Table 15. Captures per unit effort of the German salmon fishery as expression of the strength of the exploited stock (percentages in parantheses). animal Number of salmon Season per 1000 hooks, XI-III per 100 nets, II-IV acc. to corrected acc. to corrected Table 7 Table 7 1954/55 13,9 13 (85) . ' 1955/56 11 8 (52) . 14 10 (102) ' 1956/57 21,1 24,0 (157) 7,8 7,5 (77) 1957/58 9,6 10,5 (69) 8,6 9,2 (94) 1958/59 19,1 22,5 (147) 15,4 13,3 (136) 1959/60 8,0 8,4 (55) • 8,0 10,5 (107) 1960/61 10,5 10,8 (71) 8,9 . 8,5 (87) 1961/62 14,6 15,8 (103) 9,7 10,0 (102) 1962/63 8 8 (52) 12 8 (82) Dunfischilin . = Average 56/57-61/62 15,3 = 100 9,8 = 100 2.3.4. The yields of the salmon fishery The yields of the salmon fishery in the Baltic Sea have been ascertained according tontitements by G. Alm (1928a, 1954a), 0 . Christensen (19 6 1, 19 6 2, 1963), F. Chrzan - (1956b), E. lialme (pers. comm.), H. Hinking (190 5, 1913), R. Kândler (1957, 1958-63), A. Lindroth (1950), M. Linshev (1961), C. G. J. Petersen and A. Otterstrlim (1904), J. A. Sandmann (190e), S. J. Sjtigren (19 6 3),.F. Trybom (1910), and from the Bulletin Statitisque. (Vol. 1-45)(APpendix III). In the figures for the fishery in the Baltic Sea and in part [P. 25 6 ] - also in those for the river fishery are'included alsothe sea trout. The statements about their'share are incomplete. The yields of sea trout are summarized in Table V in the Appendix according to the available data and amounted,to about 100 to 400 t for the Baltic-Sea for some estimates. They
Table 16. Seasonal yields of the fishery for salmon...and sea trout in the Baltic Sea properl. Fishing • Danmark Germany Poland • Sweden Total period t Number t ' Number t Number t Number t Number % ' • 1954/55 969 1955/56 644 1956/57 . 1 072 1957158 761 1958/59 1 107 1959/60 • . . 744 1960/61 1 241 1961/62 • .1 410 1962/63 1 061 • 188 900 , 288 400 174 300 276 500 361 100 285 000 195 140 375 241 267 169 282 339 130 44 500 26 200. 93 200 49 700 62 600 36 900 55 400 86 000 32 400 191 240 225 289 170 (391) • 40 000 58 000 " 63 000 80 000 48 000 110 000 ' 328 217 . 508 185 257 • 182 321 267 (180) 82 000 40 100 108 400 35 700 54 800 31 000 75 800 (60 000) (43 000) • 1 378 314 300 1 871 463 800 1.320 305 200 2 133 ' 487 700 2 186 555 100 1 762 . 470 400 57/58-62/63 1 054 . 262 367 238 53 833 251 66 500 232 50 050 1 775 432 750 59,4 60,6 1;3,4 12,4 14,1 15,4 13,1 11,6 100,0 100,0 1 In these figures are included the yields of sea trout that amount to 35 to 85 per cent in Poland. The Swedish yields have been re-calculated after the statements by Alm (1928a, 1954a) and Segren. Figures in parantheses have beén estimated. 111' •
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FISHERIES RESEARCH BOARD OF CANADA
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sos-2cto—lo-31 DEPARTMENTOFTHESEC
Page 5 and 6: • 6.1. Previous investigations 17
Page 7 and 8: -5-. and Kerr very much later menti
Page 9 and 10: treated as a quality, a special pop
Page 11 and 12: • -9-- per cent). Furthermore, th
Page 13 and 14: • - 11 - fishery, mentions the gr
Page 15 and 16: • - 13 - in LiepUva. These voyage
Page 17 and 18: • 1948/49 545 1949/50 730 1950/51
Page 19 and 20: • 2.2.1. River fishing - 16- The
Page 21 and 22: - 18- are 50 norsels, 60 to 80 cm l
Page 23 and 24: • nets give better results is onl
Page 25 and 26: • • G Fig. 4. End buoy for salm
Page 27 and 28: • with • Total length (cm) Mout
Page 29 and 30: • • - 25- of Bothnia. In the fa
Page 31 and 32: • • - 27- increase the catch. S
Page 33 and 34: • of • fishing representsavalue
Page 35 and 36: • to lower figures than in the fa
Page 37 and 38: • • Umfang = Cire umference - 3
Page 39 and 40: • - 35 - and nape corresponds to
Page 41 and 42: • • / 100 50 Selektion Selectio
Page 43 and 44: - 39 - In Table 9 have been calcula
Page 45 and 46: . Table 10. Number of salmon per 10
Page 47 and 48: • Table 11. Number of salmon per.
Page 49 and 50: • - 45 - cza-ci, es When consider
Page 51 and 52: - 47 - If We examine once more the
Page 53 and 54: - 49 - German fishermen work during
Page 55: • - 51 - is true, have to be corr
Page 59 and 60: Table 17. Monthly average weights o
Page 61 and 62: - 57 - In February and March hardly
Page 63 and 64: • Table 20. Additional catch of c
Page 65 and 66: • 100 50 60 100 cm Totallarle . 2
Page 67 and 68: • subject to an error of ± o.op9
Page 69 and 70: cycle) during the second . period o
Page 71 and 72: • their third year. , Recruitment
Page 73 and 74: 50 r-■ 2 / bet; 56cm = 1 fis 1 li
Page 75 and 76: • - 71 - ovary that has already b
Page 77 and 78: 5 - 73 - April 1960 the diameter of
Page 79 and 80: - 75 - oocytes can be demonstrated
Page 81 and 82: . ineftlerer Mean OocytendurcArness
Page 83 and 84: - 79 - furnish the energy fer the s
Page 85 and 86: ' 1741 salmon, which were.caught be
Page 87 and 88: • - 83- the series of measurement
Page 89 and 90: - 85 - the relative amount of eggs
Page 91 and 92: - 87 - The calculation of a formula
Page 93 and 94: - 89 - area of distribution is form
Page 95 and 96: - 91 - as percentages of thé recov
Page 97 and 98: Table 22. The recapture of tagged s
Page 99 and 100: • II> Three conclusions can be dr
Page 101 and 102: • 6 65- 64 - 62-. 61 - 6 . 5 . 59
Page 103 and 104: • - 99 - fish. The tagging does n
Page 105 and 106: - 101 - tagging experiments'that sa
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- 103- Renne Bank in about 60 m dep
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• 9:1 0 a) el-4 o (XI -P CNI 4- o
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14,3 14,3 30,7 31,3 27,7 6,0 15,0 1
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Table 26. Catches of salmon in the
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- 111 - between Hela and Kahlberg r
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• - 113- 5 .. Age and growth of t
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cm 100 80 60 40 - 1 15- customarily
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found can be used for the recalcula
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v 0 00 0 I I - 119- of the scales.
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- 121 - The interpretation of the y
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• - 1 23 - the age groups 2.B to
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• L s - L c r s 0.85 Smolt Ls = l
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5.3. The'age composition of the Ger
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-129- with shares in the catch of o
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"ervoct. Yeer-Le- -e-t. '4.y-c.1*.e
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1955 1 2 3 4 23 3 61 506 7 3 135 21
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- 135 - yeAy-ctt4 thé explanation
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• • _ Table 33. The composition
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Table 34. Composition by age of cat
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- 141 - yeAy-cle..es Table 35. The
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- 143 - • U7,) tdL comparablenece
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• whereas the present data .(1957
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Sin% 0,1 2,8 37,0 96,8 100,0 - 147-
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• - 149 - these results 38 per ce
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• • Number of salmon J. en1967
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4. number 50 e" • ); e e , lot nb
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they take account of the annual cha
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• -157- and in the stock are bein
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Table 43. Mean lengths of age group
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• - 161 - of these catches has be
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- 163 - of enolt in Fig. 36. From a
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--165 - increase'in weight is more
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• rl -P b..0 -e nzi -ri r-1 gl a)
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- 169 - CLA‘s set of smolt of 193
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Year's sets of smolt CILS present 7
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- 173 - necessary to follow the gro
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- 175 - • been ascertained from t
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(after K. A. Pyefinch 1955). — 17
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• gadids and sticklebacks (after
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- 181 - especially decisive in, the
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6.3.1. Seasonal fluctuations 36,9 2
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• Number of Months Gear salmon in
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MagerdW hing 40 , 20 Filling of Sto
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Deep could be examined. - 188 - Chr
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- 190 - salmon . switch over to the
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• - 192 - recognizable after seve
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- 194 - amount of food. Under-consi
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- 196- expenditure, composition in
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• - 1 98- the stock losses are co
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NUmber of salmon per Z Weigh- Seaso
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• 'Table 55. Values of the total
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- 204 experiment were about 40 per
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- 206- strength of the stock N pert
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• N„ Z o = cf„ (M1- T) -- In
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— 210— the coefficient for the
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- 212- In a further paper Piggins (
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- 214- shifted and the fOod supply
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- 216 - concerns the yield of captu
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nachafter 00 04 0,3 0,4 2 1 0,5 6 9
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• 1. (5 100 000) (4 250 000) 4 25
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• •em.ilts - 222 - in an error
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• - 224- BRANDT, A. y. , 1959: Fa
Page 231 and 232:
- 226 - Paw, T. H., 1938: Fluctuati
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- 228- PETERSEN, C. G. .11, and Orr
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Table I. Captures per unit effort w
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Table II. Captures per unit effort
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• Yea.r Sweden Continuation Table
Page 241 and 242:
Table VI. Ratio between fork le . B
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Translation Series No.1211

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