162 



Fishery Bulletin 102(1) 



E o 



150 

 100 



B 



\ 



1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9 10 1 1 12 13 14 15 16 17 1 



250 

 200 

 150 

 100 

 50 

 



i ! V '■ 



 Back-calculated Observed Fabens 



1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 



Age (years) 



Figure 6 



Growth curves generated from (A) females. (B) males, and (Cl sexes combined for the night shark (C. signatus) off the northeastern 

 Brazil. 



fourth trimesters (new bands begin to form in this period) 

 in juveniles. Results were inconclusive for adults. For C. 

 obscurus (Natanson et al., 1995), C. plumbeus (Sminkey 

 and Musick 1995), C. porosus (Batista and Silva, 1995: 



Lessa and Santana, 1998), C. acronotus (Carlson et al., 

 1999). and /. oxyrhynchus (Lessa et al., 2000), inconclusive 

 results for MI analysis were obtained. The inability to dem- 

 onstrate the periodicity of band deposition in adult sharks 



