Translation Series No.1211

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a, c) that the age of the fish plays a.certain role in the growth of the
oocytes. Within an age class, however, the process - of ripening is depen-
dent on the length. At any rate, Fig. 20 a shows oocytes in both age classes
for which it is not possible to decide with certainty whether they will
mature already in the current year.
3
.2
Oocytundurchtnessecrnal D inmeter of odcytes
Fork length
ZO • 60 80 .100
GabellÉinge, cm '
...____. . _... ._ - _. ... .
Fig. 20 c. Relation between fork length and diameter of oocytes in April
1960, length distribution of the age classes: A.2, 63 to 80 cm, max. 66
to 75 om,A.3, 84 to 101 cm, max. 88 to 96 cm.
If we attempt to group the salmon according to their degree of
maturity with the aid of the diameter of the oocytes, we find for the fish'
investigated:
Sea year class A.+ A.1+ A.2+
Nmber of salmon investigated 3 32 33
of these in preparation for spawning in the follwing fall - 1 32