MOSER: DEVELOPMENT OF ROCKFISH 





41 Q. 



6— t: 



c2 



£ C 



D _ W 



w> C >. 



S^ ° 

 o 



o c >. 



< •- 





aE 

 x-s 



o >. 



^ P 



o_ 

 IE o 



C o 



t/1 



CQ 



"?1 

 P n 





4s 



M- O 



ao 





0) 



>i: o 



c 



I I I II i-i. i_L-:.-L_i.-i.-i.-L-i-:.^ — -1 



_ i^;_L_:._:._L_:._i_i-;._L 



I I 1 1 I I I I— l>^ — — — — — — — 11 



I I I I ( I I |7 I I l_l.'''_l'_LJ. 



I I I I I I I i— I I i-_________ 



I I I I I I I I I I I I I iio^ioc^no 

 I I I I I I I I I I I I I I — — 



Illlllllllllll'^-'TIOCO— CM 

 I I I I I I I I I I I I I I — — 



— irOCOfOCOCOCOCNCSCS 



— ICSCNiesCNCNCMCMCOn 



CSCO l>0>000— Ohv'O'OOOO-O-O-OOO-t^'O- 



t— _,— .— ,— ^^^,— — — — »— 



Tfio'O'O'os.'or^ixr-.t^f^tvivrsfNrN 



csr)n'>tio>oo'Or^>oKtxt^i-vt~vrvrx'Ni^i^ 



I I I I I I I 'cN — '"co'^'^^'O'^r^"! — 

 I I I I I I I I 



I I I I I I I ICN ' ICN-^COlOiOTI-COOO 



I I I I I I I I II ■" — 



I 1 Ic^r>n-ot^v^^'^^-K^^^v^vr^^^'^^« 

 I I I 



I I icO'*tco>0"^corNCOcococooocooooocOco 





The critical pelagic juvenile stages vv^ere found 

 in the fish collections of the Scripps Institution 

 of Oceanography (SIO) and the Los Angeles 

 County Museum of Natural History (LACM). 

 Demersal juveniles w^ere obtained from bottom 

 trawl collections of the Southwest Fisheries 

 Center, La Jolla, and the University of California 

 at Los Angeles (UCLA), in addition to the two 

 sources mentioned above. 



Prior to the completion of notochord flexion 

 during caudal fin formation, the body length is 

 defined as the distance from the tip of the snout 

 to the posterior tip of the notochord. After 

 notochord flexion is completed the usual standard 

 length measurement, the distance from the tip 

 of the snout to the posterior margin of the hy- 

 pural plate, is used. Morphometric changes in 

 rockfish can be conveniently grouped into three 

 phases that correspond to the stages of notochord 

 flexion — one before flexion, one during flexion, 

 and one after flexion is completed. These stages 

 are separated in the morphometric table. Other 

 terms used in this table are defined as follows: 



Snout-anus distance = distance along midline 

 of body from tip of snout to vertical from 

 anus 



Head length = distance from tip of snout to 

 cleithrum 



Snout length = distance from tip of snout to 

 anterior margin of eye 



Upper jaw length = distance from tip of snout 

 to vertical from posterior margin of max- 

 illary 



Interorbital distance = width of tissue dorsal 

 to eyes 



Body depth = body depth at base of pectoral 

 fin 



Pectoral fin length = maximum length of 

 rayed portion of fin 



Pelvic fin length = maximum length of rayed 

 portion of fin 



Snout to origin of anal fin = distance along 

 midline of body from tip of snout to a verti- 

 cal from anterior end of anal fin 



Snout to origin of pelvic fins = distance along 

 midline of body from tip of snout to a verti- 

 cal from pelvic fin base. 



943 



