476 



FISHERY BULLETIN OF THE FISH AND WILDLIFE SERVICE 



Figure 54. — Caranx bartholomaei juvenile, 95 mm. standard length (Gill 3, Reg. 62). 



Table 11. — Caranx bartholomaei: Statistics describing regressions of body parts on standard length 



r=mean of independent variable! 

 y = mean of dependent variable y 

 N= number of specimens 

 6=rate of increase of y 

 a = y-intercept of repression line 

 Sy-x=standard deviation from regression (standard error of estimate) 



Independent variable z 



Standard length. 

 Do 



Do. 

 Do. 

 Do. 

 Do. 



Do 

 Do. 



Dependent variable y 



Dorsal-fin spine length (3d) . 

 Dorsal soft-ray length (1st).. 



Pectoral length 



do 



Body depth 



Head length 



Eye diameter 



Snout length 



Size range of 



specimens 



(mm.) 



10. 5-79. 5 

 6.0-95.0 

 8. 1-06. 5 

 I,.; :, ■_>):( 

 12. 7-108 

 6. 0-95. 

 6. 0-83. 5 

 6. 0-95. 



35.29 

 33.97 

 34.54 

 124.75 

 43.46 

 38.51 

 37.68 

 38.48 



4.24 

 4.69 

 8.16 

 38.09 

 19.35 

 13.27 

 4.47 

 3.67 



JV 



0.121 

 .146 

 .265 

 .388 

 .388 

 .314 

 .095 

 .106 



-0. 017 



-.279 



-1.001 



-10.261 



2.508 



1. 197 



.875 



-.209 



Sy-i 



0.378 

 .502 

 .551 



1.521 

 .952 

 .647 

 .277 

 .373 



insufficient to suggest a possible change in growth 

 rate, and the same rate may prevail at these larger 

 sizes. 



Anal soft-rays. — 21 to 24 (table 12). Formation, 

 segmentation, branching, and lobation occur 

 about as with the second dorsal fin. The second 

 ray averages the longest to about 23 mm. standard 

 length; above 23 mm., the first ray is longest. 

 The longest anal and dorsal rays are nearly equal 

 to about 40 mm.; above 40 mm., the dorsal is the 

 longer. The second anal spine is two-thirds as 

 long as the longest anal ray at 6.0 mm. standard 

 length, one-half as long at 60 mm., less than one- 

 third as long at 151 mm., and almost one-fourth 

 as long at 243 mm. 



Interneural and interhemal spines. — Posterior 

 lateral projections of these spines are not extended 

 above the body surface (as occuis in latus and 

 hippos). 



Table 12. — Caranx bartholomaei: Correlation of the 

 nujnbers of dorsal and anal soft-rays of 115 specimens 



[The upper number in each block is the count obtained for that combination, 

 and the number in parentheses below is the approximate percentage of 

 that count in the total sample] 



DORSAL SOFT-RAYS 



25 26 27 28 



■< 



« 

 o 



CQ 



►J 

 < 



Caudal. — 9 + 8 principal rays; about 8 or 9 + 7 

 to 9 secondary rays. The principal rays are all 

 present and segmentation has begun at 6.0 mm. 

 standard length (fig. 48). One or two dorsal and 

 ventral secondary rays are probably unformed at 

 8.1 mm., but the full complement is present at 



