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FISHERY BULLETIN: VOL. 87, NO. 3, 1989 



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LARVAL STANDARD LENGTH (mm) 



Figure 6. — Visual development of larval white seabass as a 

 function of larval length. A. Visual acuity, error bars are 2 x 

 SE, regression equation is Y = 138 - 18.2 SL + 0.726 SL" {n 

 = 66, r^ = 0.96), where Y = visual acuity (min of arc) and SL 

 = larval standard length (mm). L.R. is the first appearance 

 of the lens retractor muscle; Nuclei is the first appearance of 

 mitotic bodies in the outer nuclear layer; and R.M. is retino- 

 motor response. B. Squares are changes in lens diameter. 

 error bars are 2 x SE, regression equation is Y = -58.7 + 

 37.8 SL (n = 78, r = 0.97), where Y = lens diameter ((jim) 

 and SL = larval standard length (mm); circles are changes in 

 cone cell density, error bars are 2 x SE, regression equation 

 is F = 52.6 - 2.3 SL (n = 66, r^ = 0.89), where Y = cone cell 

 density (no./lOO |xm) and SL = larval standard length (mm). 

 Open circles are measurements taken in the area temporalis. 

 Values for a 30 mm SL juvenile are given for comparison to 

 larvae. 



Figure 7. — Retinomotor response of a 12.5 

 mm SL, light-adapted white seabass larva, 

 showing migration of the epithelial masking 

 pigment. ONL is the outer nuclear layer. 

 X400. 



544 



