Translation Series No.1211

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6.3.5. Differences in food related to the size of the salmon
Christensen (1961b) did not find a connection between the kind
of food And the size of the salmon when he examined his fish that had
a length of 60 to 95 cm. Neither did he find that the larger salmon had
more food in their stoamchs. He explains the latter by the larger surface
of the stomachs in.the large salmon and the consequently more rapid diges-
tion. The preeent investigations also show no size-dependent differences
in the salmon with lengths from 60 cm to 112 cm.
Table 53. Fàod of smolt and post-smolt according to different
authors (percentage of salmon with food in stomach
in parantheses).
Author Months
Fish. Am- Fly-
Num- L Clup. Amm. Bel. phi- ing
ground ber cm pods ins.
-
-
EICHELBAUM V-X Pomm. Kiiste 22 14-21 + ' + +
HENKING IV-V Kolberg 7 12-18 LI-
LINOROTH VI-IX Bottensee 46 13-22 + +
HENKING II-V Kolberg 127 36-52 -I- (24) 1,9 (50) 1,9 (30)
THUROW XI-IV Danz. Tief 6 28-48 • 2,7 (100) 0,2 (17)
[Pomm. Kiiste = Pomeranian coast, Danz. Tief = Danzig Deep]
The food of the smaller salmon (A.1), which in general are not
yet exploited, is of greater interest. Only six specimen with a length of
from 28 to 48 cm could be.examined. The results have been summariied iri
Table 53, together with the results of other authors. As has already been
stated, thé Smolt in the Balt4o eat to begin with mostly flying insects.
Some fiéh, however, change very soon to a diet of fish. Lindroth fOund a
fish in à emolt of a length of 20 cm and Eichelbaum could_demonstrate Am-
màdytes already in smolt.with a length of 14 to 21 . cm. When they are over
. 30 cm long.one . finds predominantly fish as food.
One can reckon that the rapid growth begins only when the young
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