448 



Fishery Bulletin 97(3), 1999 



Appendix 



The plots of deviance residuals (Fig. 7) for both se- 

 lection curves provided in Figure 6 showed that most 

 of the size classes of prawns above 45-mm carapace 

 length had high deviances. By removing these data 

 from analysis and also the frequencies for the 35- 

 and 36-mm size classes from the composite-square-3 



codend, the P-values for model goodness-of-fit in- 

 creased from 0.760 to 0.999 for the composite-square-2 

 codend (df=25) and from 0.221 to 0.853 for the com- 

 posite-square-3 codend (df=21) (Table 4). Although 

 this alternative analysis does provide selectivity pa- 

 rameters that are slightly different from those cal- 

 culated in Table 3, the overall interpretation of the 

 data remains the same. 



