10. GROWTH, MATURITY AND MORTALITY
309
WIW'Z8: Weddell swarms
pi(i
-..
. -.I . ". .
188888888888 East Wind swarms
....... /.. " . . E
/
l o - '
.. ... .p =
' : :
r. ..
* = : : . : :
. ../... .
- - ...........
" " /
* ;
;
*
;
:
7
1
I
I
I
I
I
I
I
,
,
I
First year swarms
Semnd year swarms
"
.-"
,, . F
: ; South Georgia
1
,
,
I
. .
4 D J
F M n M J J
A
S
0
FIQ. 117. Growth in body length of individuals in swarms of Euphausia superba. The
modal lengths of individuals in separate swarms (see text) are plotted against months
of the year. A curve has been drawn to show the approximate position of a growth
in body length curve computed from these data. (After Marr, 1962.)