Discovery reports (1964) Discovery reports discoveryreports32inst Year: 1964 FEBRUARY MARCH 1 17 18 IB20 21 21 22 22 23 23 23 24 24 26 26 27 28 29 1 I 2 3 4 4 5 5 5 6 8 8 10 10 lO lO 12 14 14 15 15 17 19 21 22 23 23 24 24 25 26 26 2226 222a 624 W152 627 2244 1537 2590 1544 1297 1547 2268 2271 2506 368 540 643 1154 24 2000 38 1713 1715 1717 1720 I 618 522 1531 2BI4 1535 1285 WI56 1543 W9I5 2594 2600 2503 2606 2274 368 643 2614 23 200O2004 1711 2295 1717 1719 558 Scolc per cent Scole per cent WEDDELL DRIFT Scale per cent (2) (2X0 ;-50 144 85 200 71 lOO lOO 153 50 388 lOO 75 42 471 60 342 70
Discovery reports (1964) Discovery reports discoveryreports32inst Year: 1964 FEBRUARY MARCH 1 17 18 IB20 21 21 22 22 23 23 23 24 24 26 26 27 28 29 1 I 2 3 4 4 5 5 5 6 8 8 10 10 lO lO 12 14 14 15 15 17 19 21 22 23 23 24 24 25 26 26 2226 222a 624 W152 627 2244 1537 2590 1544 1297 1547 2268 2271 2506 368 540 643 1154 24 2000 38 1713 1715 1717 1720 I 618 522 1531 2BI4 1535 1285 WI56 1543 W9I5 2594 2600 2503 2606 2274 368 643 2614 23 200O2004 1711 2295 1717 1719 558 Scolc per cent Scole per cent WEDDELL DRIFT Scale per cent (2) (2X0 ;-50 144 85 200 71 lOO lOO 153 50 388 lOO 75 42 471 60 342 70 533 50 lOO 100 47 146 ISO 100 118 lOO 630 176 276 415 143 33 21 17 109 269 84 153 lOO 465 57 134 95 lOO 47 75 22 527 91 164 77 241 231 DATE ST 58 54 (/I 50 55 g 52 O 482 40z 36 ~ u 32 o 28 5 24' 20 £ ,6 12 Ul e N2MEAS- URED Fig. 136. Developmental condition of the small and staple whale food in summer. For vertical scale see legend to Fig. 107. fall mainly within a length range of 25-44 min., although exceptionally, as for instance at Station 1511, backward swarms may be encountered with a dominant length range of only 21-28 mm. In March the yearling swarms tend to fall mainly within a length range of 33-48 mm., although again exceptionally, as for instance at Station 658, surprisingly backward swarms may be encountered late in the month in which the females are still in stage i and the length range still dominantly 21-28 mm. as in February. (5) Throughout the season the adult swarms fall dominantly within a length range of 44-60 mm., the majority of them, however, in the 48-56 mm. range. (b) Southern zone (i) As in the northern zone the staple whale food is represented by a heterogeneous assemblage of yearling and adult swarms, the former, however, slowly outgrowing their early adolescent phase and in many instances persisting until well into March with the small whale food as an important or dominant component of the swarm length range.
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