Wilson and Nieland: Age and growth of Lut/anus campechanus 
657 
Figure 2 
Medial view (A) and transverse sections (B and C) of red snapper (Lat- 
janus campechanus) left sagittal otoliths. Abbreviations for all are Do = 
dorsal, V = ventral, P = posterior, A = anterior, SA = sulcus acousticus, 
Di = distal, and Pr = proximal. Arrows with numbers indicate positions of 
opaque annuli and their enumeration. 
Not surprisingly, the von Bertalanffy growth model gen- 
erated for all individuals of known sex ( rz =2979 ) was quite 
similar to the above: 
TL fmm) = 935 [1 -e -o-istt + O-M^ (r 2 =0.72). 
However, a likelihood ratio test revealed that von Ber- 
talanffy growth models for males (/t = 1438 ) and females 
(/2=1541) were significantly different from one another 
( X 2= 7 5 .09; df=l,2979; P<0.0001). The resultant models for 
TL at age were 
Female TL (mm) = 977 [l _ e -o.ie u + o.63) ]; ( r 2 =0.71) 
Male TL (mm) = 904 [l _ e “° 19u + 048) ], (r 2 =0.73) 
