Translation Series No.1211

2.3. The extent of the pelagic salmon fishery
2.3.1. The fishing grounds
2.3.2. The fishing season
2.3.3. The yield of the stock
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2.3.3.1. Fishing effort
2.3.3.2. Catch per unit effort
2.3.4. The yields of the salmon fishery
2.3.5. The composition of the catch in the pelagic
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fishery
•3. The sexual maturation of the Baltic Sea salmon in the ocean . .
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3.1. The sexual composition of the exploited stock 62
3.2. The condition of the gonads 64
3.2.1. The ovary 66
3.2.2. The maturing of the oocytes
3.2.3. Comparative discussion of the findings about the
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sexual maturation
3.3. The fertility of the salmon
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4. The migrations of the Baltid Sea salmon 87
4.1. The sections of the periodic migration 89
4.1.1. The smolt migration 89
4.1.2. The feeding migration 90
4.1.3. The spawning Migration 95
4.2. Small-scale movements 101
5. Age and growth of the salmon in the main basin of the Baltic Sea 113
5.1. On the terminology of the analyses of age and growth . . . 113
5.1.1. The relation between total length and. fork length . 114
5.1.2. The gutted weight 11 6
5.2. Material and method 118
5.2.1. The arrangement of the scales 119
- 5.2.2. The significance of the sclerite rings for age
determination ............ . . . . . .120
5.3. The age composition of the German catches
5.3.1. The results of the age analyses of January
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catches
5.3.1.1. The brood year t s sets
5.5.1.2. The sea year classes
5.3.1.3. The salmon with spawning marks
5.3.2. Seasonal .changes in age composition
5.3.3. The age composition of the exploited stock in the
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main basin of the Baltic Sea
5.4. The growth relations
5.4.1. Results of the investigations •
5.4.2. Discussion of the findings
5-4.2.1. The rate of growth •
5.4.2.2. The growth of the smelt of the year 1959.•
5.4.2.3. The effect of the size of smolt on the
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• growth in the sea
6. The food of the Baltic Sea salmon
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