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Figure 4 



Micrographs of larval shortbelly rockfish, Sebastesjnrdam, otoliths: EC = extrusion check; ERP = etchant-resistant 

 particles in primordium; CB = core boundary; Pr = preextrusion incremental growth; Po = postextrusion increments. 

 (A) optical micrograph (400x) of a wholemount sagitta from a 8.5-mm planktonic larva showing increment micro- 

 structure; (B) SEM micrograph from a stage-6 gestating prolarva (scale bar = 10 j/m); (C) sagittal section SEM 

 micrograph from a 7.3-mm planktonic larva (scale bar = 10^m); (D) transverse section SEM from an 8.2-mm plank- 

 tonic larva (scale bar = 10 ^m); (E) wide post-extrusion increments (scale bar = 1 /jml; (F) narrow postextrusion 

 increments (scale bar=l ^m). 



