BROTHERS: OTOLITH STUDIES 



51 



Fig. 2 1 Abrupt changes in external and internal morphology of the sagitta associated with the end of the larval stage. (A) Scanning electron 

 micrograph of the medial face of the left sagitta (9 mm SL) of a french grunt {Haemuton flavohtwatum). (B) 12 mm SL, showing development 

 of "secondary growth centers." (C) Enlargement of area in previous specimen. (D) 44 mm SL. Scale omitted: 12 mm = 500 ixm. (E) SEM of 

 ground and etched hake (Merluccius sp.) sagitta. showing growth centers around the larval otolith. (F) Photomicrograph of ground sagitta of a 

 largemouth bass, Micropterus salmoides. The larval portion of the otolith is in the lower right comer. 



