Translation Series No.1211

10000
5000
I_ •
N. 0,622 L 2' 3345
20 a ,60 6o ao 00 m uocyili.tin ge)'
Length
Fig. 23. Number of eggs as function of the
length in the Baltic Sea salmon.
- 86-
those of the rivers. In Fig. 23 are shown the numbers of maturing oocytes
in 40 salmon from the Baltic Sea in relation to the fork length. On the
basis of the allometric growth formula and the value b = 2.3345, the ecol-
ogical constant c was calculated as 0.662, a value that agrees well with
the results of Pope etaal. For lengths under 80 cm the values differ from
those - of the formula N = 0.662 L 2 ' 3345 that is used as basis. It has
15000
EizaN(N) Number of eggs
already been pointed out that perhaps not all the maturing oocytes develop
into mature eggs..It must therefore be assumed that the number of the mat-
uring oocytes agrees the bettèr with the final number of eggs; the higher
is the the state of maturity attained. As has been shown, one can expect
that most of the smaller (ïounger) individuals,attain maturity only a year
later than the larger (older) fish. In the fish over 80 cm long the recruit-
ment oocytes and the maturing oocytes are already very clearly differen-
tiated. It is therefore easy to understand thitt the values for the
smaller salmon do not correspond to the course of the curve that is demanded.