THRESHER ET AL.: LARVAE OF GADOID, MACRURONUS NOVAEZELANDIAE 



Sea surface temperature (°C) 



40°- 



42° 



440. 



40°- 



42°- 



44" 



143° 



146° 



149° 



Figure 8.— Distribution of surface isotherms during early winter of 1984 and 1985, based on shipboard thermosalinograph 



traces. 



1984 



R^= 0.96 

 n = 116 



•01 

 C 

 ^ 



o 



— I 1 1 1 1 1 1 — 



10 20 30 40 



50 60 



C 



3  



2  



10 20 30 40 50 



Age (days) postfirst-feeding 



60 



Figure 9.— Regressions of In total length against age (days postfirst feeding) for 116 lar- 

 vae of Mae-ruronus navaezelandiae collected in 1984 and 365 larvae collected in 1985. A 

 semilog regression accounts for 96% of the variance in length at age in 1984 and 84% of 

 the variance in 1985. Differences between years in the slopes of the regressions are signifi- 

 cant at P < 0.01. 



39 



