832 



Fishery Bulletin 92(4), 1994 



Function 2 



Figure 1 5 



Distribution of individual juvenile Nemadactylus macropterus from 

 each of the six sampling sites (see Fig. 1 and Table 1) in two-func- 

 tion space as defined by the three-group LDFAof the adults, based 

 on mean concentrations of the six detected elements at points 2-6, 

 inclusive. Circles enclose areas in two-function space defined by 

 the three adult groups (see Fig. 12). 



case among the Tasmanian-caught juveniles. There is 

 an indication of modes at either end of the probability 

 spectrum and possibly a third mode centered near 35%. 

 The second analysis of the link between nursery 

 areas and the adult population requires analysis of 

 that portion of the otolith deposited while the indi- 

 viduals were in the nursery areas. The otolith of the 

 smallest juvenile we found had a longest growth axis 

 (posterior to primordium) 500 urn in length; several 

 other small fish had similar growth axes in the range 

 of 570-650 urn. Therefore, we examined a standard 

 region approximately 600-800 urn posterior to the 

 primordium along the main growth axis as otolith 

 deposited early in the nursery area stage of develop- 

 ment. Specifically, we used as the datum of interest for 



Figure 16 



Distribution of probabilities that juvenile Nemadactylus 

 macropterus caught in each of the two regions sampled 

 < Tasmania and Victoria I group with adult samples collected 

 in the same regions as defined by the three group LDFA of 

 the adults. 



35 



20 



IS 



n 



E 



Tasmania 



Victoria 





0.5 



Probability juveniles group with 

 adults from region where caught 



