Drass et al.: Larval development of Lul/anus campechanus 



511 



Figure 1 



Preflexion larvae of reared Lutjanus campechanus: I A) 2.5 mm, 1 DAH, from TX; (B) 2.6 mm, 

 3DAH, fromTX;(Cl2.8mm, 5DAH, from TX; (D). 2.4 mm, 6 DAH, from AL; (El 3.1 mm, 

 12 DAH, from TX. 



cleithral spines on the 3.5-mm ( 11-DAH) specimen and by 

 4.9 mm (14 DAH), four supracleithral spines were pres- 

 ent. A posttemporal spine had developed by 3.8 mm ( 12 

 DAH), and by 5.5 mm ( 15 DAH) there were two posttem- 

 poral spines. A supraocular ridge formed by 3.8 mm and 

 one spine developed on the ridge by 4.4 mm (13 DAH). 

 Two, three, and four additional spines were present on the 

 supraocular ridge by 4.9 mm ( 14 DAH), 5.6 mm ( 16 DAH), 

 and 9.6 mm ( 17 DAH), respectively. 



Fin development (Table 2, Figs. 1-5) Sequence of fin-ray 

 formation can be characterized either by initial or com- 

 pleted development of fin elements. The order of develop- 

 ment, based on initial development as reported by Potthoff 

 et al. (1988), for red snapper is first dorsal, then pelvic, 

 caudal, second dorsal, anal, pectoral. Order by completed 

 development as reported by Johnson ( 1984 ) for lutjanids in 

 general is first dorsal, then pelvic, second dorsal, anal, pec- 

 toral. Elements of the dorsal and pelvic fins began forming 



