Náttúrufræðingurinn - 1952, Side 23

ALDURSFLOKKAR
ÞORSKUR
C O D
READ BY : I. OSKARSSON
Aldur við íyrstu hryjjninsru
LOCALITY : S.ANDSW.COAST
DATO : JAN.- MAY 1951
GEAR i LONG-LINE
flUdursdreifing
AGE AT FIRST SPAWNING AGE DISTRIB.
4 5 6 7 8 9 IO U 12 1 3 14 IM- MAT. ? NO. % N O. 1-
3 55
4 2 69 2 2 005 4 o.l.
5 7 33 1 1 7 0.2 18 0.4
6 8 153 6 3 161 4.1 164 3.7
7 i 25 267 2 14 ?93 7.4 307 6.9
8 3 106 439 33 548 13:9 581 I3.2
9 5 75 846 IIOI 168 2027 51.5 2195 49.8
10 1 6 52 116 76 35 251 6.4 286 6.5
11 7 18 30 24 6 30 85 2.2 115 2.6
12 2 l 2 32 34 30 3 36 113 2.9 149 3.4
1 3 8 1 4 21 9 8 16 60 1.5 76 I.7
M 2 9 1 1 16 14 1 1 20 54 1.4 74 I.7
15 1 IO 29 77 67 25 16 5 81 230 5.8 311 7.1
16 2 9 20 13 15 3 14 62 1.6 76 I.7
17 2 7 5 2 3 1 5 20 0.5 25 0.6
18 5 1 3 4 3 6 16 0.4 22 0.5
19 1 2 ' 3 0.1 4 O.l
20 1 1 1 3 0.1 3 0.07
21
22 1 1 0.02
2 251
NO. 2 16 187 466 1397 1350 277 148 58 28 6 165 476 3935 4411
% D.05 0.4 4 B 11.8 35.5 343 7.0 3B 1.5 0.7 0.2
SPAWNING CLASSES COTFLOKKAR
l 2 3 4 5 6 7 8 9 10 ll 12 13 14 15 TOTAL
N O. 3054 1169 221 I25 I35 II6 69 31 6 7 I i 3935
% 522 29.7 5.6 3.2 3.4 2.9 IS 0.8 0.2 0.2 002 002
5. mynd. Aldursdreifing línufisks á vetrarvertíð 1951. — Age-distribution of long-line
cauglit fish in Jan.—May 1951, showing the age at fivst spaivning, spawning classes etc.