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Larvae Information Summary for  Spratelloides robustus
( not available )

Main Ref: Miskiewicz, A.G. and F.J. Neira 1998
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm) 4.3      
Preanal L. % TL 89 76    
Place of development  
Larval area Wilson Inlet (WA), Lake Macquarie and Sydney (NSW)
Yolk-sac       Ref:  
Yolk   Oil globules  
Rows on tail  
Other melanophores on tail  
Post larvae
Striking feature none
Striking shape lateral short and/or deep dorsal compressed
Striking feature none
Shape of gut elongated
Gas bladder   early   late pigmented
Spinal armature   early   late  
Pigmentation early
Rows on tail no rows
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on head + trunk
Pigmentation late
Rows on tail ventral row
Other melanophores on tail one dorso-ventral cluster or band
Melanophores on head + trunk melanophores on head + trunk
Urostyle region   early unpigmented late pigmented
Peritoneum with row of melanophores
Pectorals fin rays only without melanophores
Pelvics fin rays only without melanophores
Diagnostic characters: muscle fibers without cross-hatched pattern; hindgut without striations; anus migrates anteriorly from myomere 40 to 37 between 3.7 and 18.1 mm; posterior end of dorsal fin 2-4 myomeres in front of origin of anal fin; no pigment around tip of notochord in preflexion larvae; 2-4 bilateral pairs of melanophores dorsally along posteriormost hindgut, above anus. Gas bladder inflated only in larvae caught at night (Ref. 33617).
Meristic characters
  max min mod Ref.
Total number of myomeres 50 47   33617
Preanal number of myomeres 40 37   33617
  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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