610 



Fishery Bulletin 93(4). 1995 



56°.30'N  



56-.00' 



55°.30' - 



55°.00' • 



54°.30' - 



54". 00' - 



0.25 



0.20 



| 0,5 



o 



O0.10 



£ 



0.05 

 0.00 



10 15 20 25 30 35 40 45 50 55 

 Standard Length (mm) 



^* 



■V- 7 a~* 



o 



Gadus macrocephalus larvae 



166°W 



164° 



162° 



160° 



158° 



156° 



Figure 6 



Distribution of larval and juvenile stages of Gadus macrocephalus in the study area. Also shown are the standard- 

 ized length distributions for each life stage (inset). 



Gadus macrocephalus larvae were differentiated 

 from juveniles on the basis of this analysis. 



Four station groupings were recognized by 

 TWINSPAN (Fig. 11). An inshore group (group 4) 

 showed a high positive association for G. macro- 

 cephalus, T. chalcogramma, and//, elassodon larvae 

 and a negative association for Sebastes spp. larvae 

 (Table 3). An offshore group (group 3) showed a high 

 affinity for Sebastes spp. and Bathyagonus alascanus 

 larvae and a low affinity for A. hexapterus, H. 



elassodon, and Icelinus spp. larvae. Many taxa, in- 

 cluding larval and juvenile T. chalcogramma, H. 

 elassodon, A. hexapterus, Lumpenus spp., and A. 

 stomias showed high affinities, whereas Bathyagonus 

 infraspinatus and Sebastes spp. larvae showed low 

 affinities with a widely scattered midshelf grouping 

 (group 2). Finally, a poorly defined grouping (group 

 1) was positively associated with Sebastes spp. lar- 

 vae and negatively with G. macrocephalus and Z. 

 silenus larvae. Ichthyoplankton densities were rela- 



