Translation Series No.1211

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is, however, not the case, because in November fish with greater oocytes
are present. These can only have grown up from the small oocytes.df April,
in that their diameter increased frOm 0.96 to about 1.44/ that is by about
0.5 mm on an average.
In order to make still clearer the reported train of ideas, the
diameter of the oocytes will now be considered in relation to the length
of the salmon. The evaluation of the sample of November 1959 ( Fig. 20 h)
3
llocytendurdwness e; mill
r Diameter of oocytes
10 30
. _ .
.
•• .
Total length
50 70 93 rotadnytc il rn .
Fig. 20 a. Relation between total length and diameter of the maturing
oocytes, April 1958, length distribution of the age classes: A.?, 65
to 86 cm, max. 72 to 79 cm; A.3, 87 to 101 cm, max. 90 to 98 cm.
shows that it is pOssible to distinguish between recruitment stock and
maturing oocytes in salmon already during the firstyear in the Baltic Sae&
Up to a length of 76 cm the Size of the oocytes correlates with the length
of the fish. That, however, does not hold for the samples of April 1958
and April : 1960.(Figs. 20 a, c). Furthermore, it does not hold true for the
larger fish (A.2+) of all three samples.
ACcording to the findings, the process (fàf maturing during the
sojourn in the Baltic Sea can be explained in the following manner:
during the first year in the Baltic Sea recruitment stock and maturing .