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Larvae Information Summary for  Siphamia cephalotes
( not available )

Main Ref: Neira, F.J., A.G. Miskiewicz and T. Trnski 1998
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm) 4.8      
Preanal L. % TL 56 51    
Place of development planktonic
Larval area Spencer Gulf (SA)
Yolk-sac       Ref:  
Yolk   Oil globules  
Post larvae
Striking feature  
Striking shape lateral   dorsal  
Striking feature  
Shape of gut  
Gas bladder   early   late  
Spinal armature   early   late  
Diagnostic characters: weak preopercular spines; small gap between anus and origin of anal fin; 4-9 large stellate melanophores laterally along tail; light diffusers ventrally along trunk and anterior of tail, heavily pigmented in larvae >8.1 mm BL. Sequence of fin formation: caudal (4.8-6.1 mm); anal (<4.8-6.1 mm); dorsal (<4.8-8.0 mm); pectoral (<4.8-9.4 mm); pelvic (6.8-9.4 mm). Larvae as small as 5.3 mm BL (flexion stage) have been observed swimming with epibenthic adults (Ref. 33616). Adults, and larvae from 4.8 mm BL are regularly caught in oblique plankton tows at night (Ref. 33616). Larvae settle on the bottom at 5.3-22.0 mm BL.
Meristic characters
  max min mod Ref.
Total number of myomeres 24 24   33616
Preanal number of myomeres 11 10   33616
  L 1st feeding Ref. Months of presence of larvae
max     Jan Feb Mar Apr
min   May Jun Jul Aug
mod     Sep Oct Nov Dec
Water parameters     Metric characters
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