THEILACKER; EFFECT OF STARVATION ON JACK MACKEREL 



4.2^ A 



• FED 



A STARVED 



0.60 



E 



E 0.70 



X 



Q- 0.601- 



UJ 



o 



Q 0.50- 



o 

 iij 

 a. 



0.40- 



0.30 



6 7 8 9 10 



h-^-^ 



6 7 8 9 



DAYS 



10 



'g 0.35 

 E 



ui 



ijj 



>- 



UJ 



0.30- 



< 



Q 0.25 



0.20 



8 



10 



Figure 13. — A. Growth ofTrachurus symmetricus larvae, with means and standard deviations. Sample size on any day was usually 15. 

 B-F. Relationship between five morphological characteristics of T. symmetricus larvae and days of starvation, with means and standard 

 deviations. Sample size was usually 15. 



starved) have been feeding or starving for 1 or 2 

 days. 



To determine whether a set of several mor- 

 phometric variables could predict the condition of 

 larvae in the 3.30 to 3.55 mm size class, a SWDA 



was run. Eleven morphometric variables, in which 

 the two predetermined groups (fed and starved) 

 were expected to differ, were entered into the 

 SWDA: 1) HL, 2) ed, 3) bd-1, 4) bd-2, 5) HL/SL, 6) 

 ed/SL, 7) bd-l/SL, 8) bd-2/SL, 9) ed/HL, 10) bd-1/ 



409 



