Translation Series No.1211

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• the period from 1940 to '1962. - 54 - The figures for the landings for the total salmon and sea trout fishery show considerable fluctuations for the Baltic Sea and also for the rivers (Tables III and Iv). For the Baltic Sea they rose from 250 t to 1330 t during the 20 years from 1913 to 1932. The most astonishing phen- omenon is, however, the sudden growth of the fishery after the Second World War to a total of 4000 t, which finds expression also in the rivers (700 t). The average yield for the years 1957 to 1962 amounted to 2675- t. Of this about 275 t were caught in the rivers. The shore.fishery (Sweden, Finland, SSSR, Poland) yielded about 600 t and the pelagic fishery 1800 t or 440,000 fish. This corresponds to a percentage of 67 per cent of the total yield. 'These catches were composed of 1500 to 1600 t Atlantic salmon and 200 to 300 t sea trout. Lp. 2581 . The pelagic fishery (Denmark, Germany, Poland,Sweden) is res- tricted substantially to the main basin of the Baltic Sea (fishing grounds 3, 4, 5, 6), but it has been extended recently during the fall months into the Gulf of Bothnia (fishing ground 2, Fig. 6). Since the fishing in the ocean is carried out preponderantly from fall to sprink, the seasonal yields are of special interest (Table 16). They show still greater fluctuations than the figures that relate to the calendar year. This is caused by the fact that the seasonal yields are affected especially by the fluctuations in the stock. At the beginning of the fishing season the salmon, which spend their second year in the Baltic Sea, are just entering the exploited phase..They form, together with the fish that are one year older, the main bulk of the catches. Towards the • .end of the seaèon, in April/May of the following year, the large fish 'begin their spanning migration. This is the beginning of the rejuvenation •
Table 17. Monthly average weights of salmon, according to German landings, in kg, gutted weight. Season IX X XI XII . I II III IV V VI Weighted Arithm. - mean mean 1954/55, 1956/57 1957/58 1958/59 1959/60 1960/61 1961/62 1962/63 1963/64 3,92 .4,25 4,67 4,68 4,75 . 4,63 4,33 4,38 4,47 4,87 5,79 5,88 6,68 - 5,21 5,31 5,10 4,52 5,36 5,42 4,34 4,49 4,18 3,34 4,04 4,20 4,22 ' 4,02 3,70 4,02 4,06 5,29 4,63 5,03 4,32 5,07 5,28 5,10 5,11 4,92 4,98 3,98 4,32 4,13 4,31 4,44 4,67 3,94 3,72 - 4,27 4,18 5,37 4,64 4,46 5,42 4,86 4,34 4,71 4,12 3,53 4,39 4,61 3,29 4,95 5,18 5,09 4,98 5,31 5,35 5,09 4,42 5,10 4,85. 3,55 4,05 4,13 3,90 3,62 3,85 4,14 3,87 3,89 3,84 3,91 3,88 4,39 4,63 3,63 4,05 4,04 3,57 3,35 3,87 3,95 4,93 4,38" z :..4,06 4,46 5,89 3,79 3,24 4,47 3,25 3,23 4,35 4,17 Mitrelwert = mean val .4,04 4,72 4,35 4,55 4,69 4,73 4,55 4,61 . 4,18 3,70 4,47 4,49 fiinfgliedriges Five-term ' Mittel (4,37) 4,47 4,61 4,57 4,63 4,55 4,35 (4,16) Table 18. The monthly yields of the fishery in the main basin of the Ba3.tio Sea. SeasOn Country :VIII IX X XI XII II III IV V VI VII Total _ Mitte1=Mean M. 1 1,2 1955/56 bis =t0Dell 2 1961/62 Po 3 Svi 9,7 4 • ' 23,3 92,8 162,8 219,6 144,0 90,4 85,5 80,1 77,5 23,4 * 0,5 1001,0 1,0 11,7 52,9 63,3 39,9 24,7 31,5 19,1 11,7 1,3 • 259,1 0,2 8,6 18,1 13,0 • 1,9 4,6 26,6 • 17,6 1,4 92,0 35,7 30,6 31,8 11,3 3,4 2,8 17,2 28,2 21,8 5,2 0,9 198,5 Ges. Mittel Tot .Mean '10,9 : 5 9,9 135,3 /56,0 314,3 200,3 - 11 9,7 138,7 153,9 1/3,6 ' 31,7 1,3 1550;6 _. . I Schweden nur Gotland und Bleitinge: = Sweden. -only Gotland and Blekingè - ' . 1 = Denmark 2 - Germany 3 = Poland 4 = Sweden •
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FISHERIES RESEARCH BOARD OF CANADA
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sos-2cto—lo-31 DEPARTMENTOFTHESEC
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• 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 and 56: • - 51 - is true, have to be corr
Page 57: Table 16. Seasonal yields of the fi
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
Page 107 and 108: - 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
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- 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
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Table VI. Ratio between fork le . B
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Translation Series No.1211

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