FISHERY BULLETIN: VOL. 74, NO. 2 



3 



3IOp 

 3CX) 

 290 

 280 

 270 

 260- 

 250- 

 240- 

 230- 

 220- 

 210- 

 200- 

 190- 

 180- 

 170- 

 160- 

 150- 

 140- 

 130- 

 120- 

 110- 

 100- 

 90- 

 80- 

 70- 

 60- 

 50- 

 40- 

 30 

 20- 

 I 

 

 60- 

 50- 

 40 

 30- 

 20 

 10 





 60 



50- 



40- 



30- 



20- 



?9 



FUSED 

 (g83) 



' I ' '  



I  I  I  I  I 



AVERAQE 



MOTTLED 

 (194) 



'''!''■ 



. I 



SPECKLED 

 (210) 



a^ 



m/BMBE 



I ''■  ' 1-^ I 



J 



Figure 14. — Length-frequency distributions of fe- 

 males of Stenella attenuata from the offshore east- 

 ern Pacific, by color pattern phases. On cruises be- 

 tween January 1971 and October 1972, adult 

 females (3^160 cm) were selected for measuring and 

 dissection. Earlier and later samples were non- 

 selective. Average lengths for neonatal, two-tone, 

 and fused are based on all the samples (no length 

 bias), and averages for speckled and mottled are 

 based on the nonselective samples (shaded). The 

 analyses of coloration transition are based on all 

 the samples for neonatal-to-two-tone and on the 

 nonselective samples for the remaining three 

 transitions. Size of sample used for calculation of 

 average is given in parentheses. 



tb 



m/fjmt 



. i i I t R-t-< 



80 90 K)0 110 120 130 140 ISO 160 170 180 190 200 210 220 230 



TOTAL LENGTH (cm) 



244 



