CAUSES OF PATCHINESS 



231 





1" 



2 12 



w ,0 



S = 

 I 4 



JULY 



AUGUST 



SEPTEMBER 



OCTOBER 



9 21 22 22 24 26 2928 29 29 2912 4 13 17 17 17 IB 18 19 19 25 25 29 30 2 3 3 3 4 4 4 S 5 5 5 6 6 6 6 7 7 8 

 2854 2856 2365 2963 2864 2405 2408 «26l W264 W267 I403 W279 W262 W285 W287 2431 2443 2447 W294 W295 W297 W299 W30I W302 W304 W305 W3I0 

 2655 29S7 2959 2372 2398 2406 24(2 W263 W266 W26e W276 W260W293 W266 W268 2432 2445 1821 1823 W296 1824 W3O0 1825 W303 1826 W306 



r-m I r-m 



O SO JOO 11 I O so 100 



T T I I 1 I I I , o so roo 



80 47 40 32 56 ISO SO lOO 45 IOC 362 lOO lOO lOO lOO 62 192 236 24 100 71 lOO 61 lOO lOO lOO 56 

 33 51 58 7 lOO lOO 166 lOO 52 59 59 50 lOO lOO lOO 405 90 58 291 lOO 498 lOO 321 77 224 64 



|»ffp|^ff^*^'f™»!"f% 



-TffWP Willi 



DATE 



ST 



22 

 20 



Fig. 38. The patches as swarms. Stage and length frequency in larval, or mixed larval and adolescent, samples from the 

 Antarctic surface layer. Based on all measured samples of 10 or more from the northern or Weddell zone and continued in 

 Figs. 39-42. The specimens, measured to the nearest millimetre, are plotted in 2-mm. groups, the operative figure in the 

 length range being the second of the group, e.g. 12 includes specimens of 11 and 12 mm. 



DATE 

 ST 



OCTOBER 



NOVEMBER 



9 10 10 10 10 10 10 10 10 10 10 10 10 10 to II 12 16 17 18 I9 2020 21 21 21 22 22 23 25 26 26 26 26 28 28 28 29 31 | I I 2 2 2 2 4 6 13 14 16 16 17 17 



1832 1835 1835 1835 1835 1835 1835 1635 1637 454 459 1846 461 461 462 464 2465 467 2468 2475 472 2477 2479 1O09 493 467 491 



1835 1835 1835 1835 1935 1835 1635 1936 453 455 460 461 461 461 463 2463 465 2467 469 471 1003 2478 IBS6 461 484 468 



AOOL 

 FURC6 



(l)(l)(0(l)CI) 



50 295 94 71 638 ISO 171 322 lOO lOO lOO 57 SO SO lOO 103 606 97 39 73 lOO 66 60 106 lOO lOO lOO 



83 325 64 336 348 lOO 164 lOO 50 100 45 SO 50 50 46 



46 52 30 no lOO 121 3IO 42 lOO 95 75 



TffffTfflrpffwifffliin f-wffir 



DATE 



ST 



34 

 32 



30 

 28 

 26 

 24 

 22 

 20 



AOOL 

 6 F 



Fig. 39. The patches as swarms. Stage and length frequency in mixed larval and adolescent, or purely 

 adolescent, samples from the Antarctic surface layer. See legend to Fig. 38. 



SS6 

 8 52 



32a 

 S24 



NOVEMBER 



DECEMBER 



JANUARY 



FEBRUARY 



18 19 19 21 21 21 222222222323232324252626262627272629 292930|6 9 lOII II 13 19 19 |l025 26 27 27 27 27 27 27 2930 7 6 9 9 9 10 11 



492 I029 500W4B7 2093 503 2094 1624 517 1628 519 2109 2112 2116 2SI3 S S30 539 V(S37 W54OW54OWS40W542 I507 351 354 ISM 



494 W466 2091 502 2093 507 2094 210O 1039 2103 1630 S23 2113 2510 S 527 537 S W536 W540W540 924 2567 349 352 612 



^ SAMPLE FROM SIGHTED SWARM 



lOO 200 lOO lOO I02 SO 251 64 lOO 96 74 52 65 87 189 99 23 61 116 568 904 604 lOO lOO 55 92 SO 

 lOO lOO 112 67 129 ICO 92 594 197 76 62 lOO 290 27 57 49 379 325 66 522 539 95 619 35 60 517 



AOOL 

 FURC6 



TfW W -: ""T™ T 



ADOL 

 6FURC 



Fig. 40. The patches as swarms. Stage and length frequency in mixed larval and adolescent, or purely adolescent, samples 

 from the Antarctic surface layer. Specimens plotted in 4-mm. groups, the operative figure in the length range being 

 the fourth of the group, e.g. 28 includes specimens of 25, 26, 27 and 28 mm. 



