130 
120 
110 
0 I I % I I I § I i » 1 § s § § ! I 1 § § I g g S 5 
Total length (mm) 
Figure 3 
Size distribution of the narrownose smooth-hound ( Mustelus schmitti) caught 
in Anegada Bay, Argentina, in 2008. The white bars represent the total sample 
(n=1547) at a given total length, and the black bars represent the subsample 
composed of 10 randomly selected specimens of each size (n=245). Samplings 
were conducted in February (summer), May (autumn), August (winter) and No- 
vember (spring). 
Summer Autumn Winter Spring 
Figure 4 
Seasonal change in the percentage of translucent bands at the edge of the ver- 
tebrae of narrownose smooth-hound ( Mustelus schmitti) caught in Anegada Bay, 
Argentina, in 2008. The numbers above the bars indicate the number of indi- 
viduals sampled in each season. Sampling was conducted seasonally in February 
(summer), May (autumn), August (winter), and November (spring). Note that 
the vertebrae of 222 individuals were used for age determination — a number 
slightly smaller than the the size of the subsample (n=245) because 23 individu- 
als were not used as a result of the ilegibility of the edge of their vertebrae. 
