Translation Series No.1211

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• Table 36. Percentage of salmon with spawning marks in the Baltic Sea. Author CHRZAN CHRZAN CHRZAN CHRZAN CHRZ AN CHRZAN CHRZAN CHRZ AN CHRZAN CHRZAN K.ÂNDLER/LüHNIANN THUROW THUROV !THUROW • THUROW THUROW THUROW 1945/46 1946/47 1947/48 1948/49 1949/50 1950/51 1951/52 1952/53 1953/54 1954/55 1953-55 1957/58 1958/59 1959/60 1960/61 1961/62 1962/63 2,3 4,0 11,2 3,6 2,5 4,3 3,1 2,6 2,0 1,0 2 3,3 4,3 3,3 1,0 0,7 1,9 30 16 3 38 8 9 11 17 55 51 54 72 49 77 91 66 - 146 - Salmon with Share of sea Season spawning marks yeax class in per cent A.1+ in total catch in p.c. Table 37. Time of spawning and age at spawning of fish with spawning marks that were caught in 1957 to 1963, as number of salmon per 100,000 hooks (percentages in parantheses), 162 salmon examined. Time of Age at spawning spawning A.+ A.1+ A.2+ 4.3+ A.A+ A.5+ Total . 1954 1 1 1955 1 '1 ' 2 1956 9 . 13 5 27 1957 3 14 25 7 1 50 1958 8 38 20 66 1959 1 6 8 7 2 1 25 1960 3 3, 2 1 9 1961 1 6 7 14 1962 1 1 Summe gcsamt 4 (2) 43 (22) 95 (49) 46 (23) 5 (3) 2 (1) 195 Summc 1957 61 4 (2) 32 (20) 80 (49) 41 (25) 5 (3) 2 (1) 164 Summe gesamt - total sum, Summe = suml younger age group 4.1+ (grilse) and 25 per cent constituted the next older . age group A.34.
Sin% 0,1 2,8 37,0 96,8 100,0 - 147- If we compare these results with the series - of Swedish measurements of lengths in ascending salmon (Fig. 22),'we find that the bulk of the ascending fish here also is formed • y the sea year class A.2+. The fish that migrated already in their second year in the sea (A.1+) are grilse. Of the older groups, the sea year class A.2+ on the one hand and the classes A.3+ to A.5+ on the'other form each a maximum in the frequency distribution of the Swedish series of length measurements (3.2.3.). If one collects together correspondingly the age groups of the Table 37 and neglectF the grilse, then the sea.year class A.2+ constitutes a share of 64 per cent. F. Chrzan (1959) found on an average during the years 1945 to 1955 the share of the sea year class A.3+ to be more than 60 per cent. Table 38. The share of the salmon with spawning marks in the sea year clsses. Year of Age groups - invest- A.1+ A.2+ A. 3+ A.4+ A.5+ Total igation Tot. .8 Tot. S Tot. S Tot. S Tot. S Tot. S 1958 725 521 16 77 18 11 10 1338 44 1959, 558 2 186 17 22 14 775 33 1960 646 2 618 17 37 15 7 7 2 .2 1317 43 1961 1026 1 286 3 14 7 1 1 1 '1 1329 13 1962 979 96 2 3 2 2 2 2 2 1082 8 1963 724 342 3 20 8 10 10 1103 21 . Summe 4658 5 2049 58 173 64 31 30 5 5 6944 162 8 = salmon with spawning marks [Summe = sum] v/ In the age determination the salmon with spaipng marks have been incorporated inte the sea yeax classes according to the length of life they spent after their transformation into gmolt. Since the spawning maturity is dependent on the condition and thus can fluctuate annually and since the spawning fish are subjected for about one year to quite different 2,3
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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
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-5-. and Kerr very much later menti
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treated as a quality, a special pop
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• -9-- per cent). Furthermore, th
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• - 11 - fishery, mentions the gr
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• - 13 - in LiepUva. These voyage
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• 1948/49 545 1949/50 730 1950/51
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• 2.2.1. River fishing - 16- The
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- 18- are 50 norsels, 60 to 80 cm l
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• nets give better results is onl
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• • G Fig. 4. End buoy for salm
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• with • Total length (cm) Mout
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• • - 25- of Bothnia. In the fa
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• • - 27- increase the catch. S
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• of • fishing representsavalue
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• to lower figures than in the fa
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• • Umfang = Cire umference - 3
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• - 35 - and nape corresponds to
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• • / 100 50 Selektion Selectio
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- 39 - In Table 9 have been calcula
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. Table 10. Number of salmon per 10
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• Table 11. Number of salmon per.
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• - 45 - cza-ci, es When consider
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- 47 - If We examine once more the
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- 49 - German fishermen work during
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• - 51 - is true, have to be corr
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Table 16. Seasonal yields of the fi
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Table 17. Monthly average weights o
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- 57 - In February and March hardly
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• Table 20. Additional catch of c
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• 100 50 60 100 cm Totallarle . 2
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• subject to an error of ± o.op9
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cycle) during the second . period o
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• their third year. , Recruitment
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50 r-■ 2 / bet; 56cm = 1 fis 1 li
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• - 71 - ovary that has already b
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5 - 73 - April 1960 the diameter of
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- 75 - oocytes can be demonstrated
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. ineftlerer Mean OocytendurcArness
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- 79 - furnish the energy fer the s
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' 1741 salmon, which were.caught be
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• - 83- the series of measurement
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- 85 - the relative amount of eggs
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- 87 - The calculation of a formula
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- 89 - area of distribution is form
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- 91 - as percentages of thé recov
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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
Page 109 and 110: • 9:1 0 a) el-4 o (XI -P CNI 4- o
Page 111 and 112: 14,3 14,3 30,7 31,3 27,7 6,0 15,0 1
Page 113 and 114: Table 26. Catches of salmon in the
Page 115 and 116: - 111 - between Hela and Kahlberg r
Page 117 and 118: • - 113- 5 .. Age and growth of t
Page 119 and 120: cm 100 80 60 40 - 1 15- customarily
Page 121 and 122: found can be used for the recalcula
Page 123 and 124: v 0 00 0 I I - 119- of the scales.
Page 125 and 126: - 121 - The interpretation of the y
Page 127 and 128: • - 1 23 - the age groups 2.B to
Page 129 and 130: • L s - L c r s 0.85 Smolt Ls = l
Page 131 and 132: 5.3. The'age composition of the Ger
Page 133 and 134: -129- with shares in the catch of o
Page 135 and 136: "ervoct. Yeer-Le- -e-t. '4.y-c.1*.e
Page 137 and 138: 1955 1 2 3 4 23 3 61 506 7 3 135 21
Page 139 and 140: - 135 - yeAy-ctt4 thé explanation
Page 141 and 142: • • _ Table 33. The composition
Page 143 and 144: Table 34. Composition by age of cat
Page 145 and 146: - 141 - yeAy-cle..es Table 35. The
Page 147 and 148: - 143 - • U7,) tdL comparablenece
Page 149: • whereas the present data .(1957
Page 153 and 154: • - 149 - these results 38 per ce
Page 155 and 156: • • Number of salmon J. en1967
Page 157 and 158: 4. number 50 e" • ); e e , lot nb
Page 159 and 160: they take account of the annual cha
Page 161 and 162: • -157- and in the stock are bein
Page 163 and 164: Table 43. Mean lengths of age group
Page 165 and 166: • - 161 - of these catches has be
Page 167 and 168: - 163 - of enolt in Fig. 36. From a
Page 169 and 170: --165 - increase'in weight is more
Page 171 and 172: • rl -P b..0 -e nzi -ri r-1 gl a)
Page 173 and 174: - 169 - CLA‘s set of smolt of 193
Page 175 and 176: Year's sets of smolt CILS present 7
Page 177 and 178: - 173 - necessary to follow the gro
Page 179 and 180: - 175 - • been ascertained from t
Page 181 and 182: (after K. A. Pyefinch 1955). — 17
Page 183 and 184: • gadids and sticklebacks (after
Page 185 and 186: - 181 - especially decisive in, the
Page 187 and 188: 6.3.1. Seasonal fluctuations 36,9 2
Page 189 and 190: • Number of Months Gear salmon in
Page 191 and 192: MagerdW hing 40 , 20 Filling of Sto
Page 193 and 194: Deep could be examined. - 188 - Chr
Page 195 and 196: - 190 - salmon . switch over to the
Page 197 and 198: • - 192 - recognizable after seve
Page 199 and 200: - 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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