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Larvae Information Summary for  Polyprion americanus
( not available )

Main Ref: Sparta, A. 1939
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm)     3.7  
Preanal L. % TL     66.6  
Place of development in mouth (mouthbrooders)
Larval area to be filled
Yolk-sac ovoid   pigmented Ref:  
Yolk segmented Oil globules one oil globuleposteriorventralunpigmented
Rows on tail no rows
Other melanophores on tail tail with single melanophore
Melanophores on head + trunk melanophores on head + trunk
Black chromatophores on the margin of the dorsal and ventral primordial fin. A ventral preanal rowof melanophores.
Post larvae
Striking feature none
Striking shape lateral normal (not striking) dorsal normal (not striking)
Striking feature none
Shape of gut elongated
Gas bladder   early   late  
Spinal armature   early   late several different spines
Pigmentation early
Rows on tail no rows
Other melanophores on tail tail partly covered with melanophores
Melanophores on head + trunk melanophores on head + trunk
Pigmentation late
Rows on tail no rows
Other melanophores on tail tail partly covered with melanophores
Melanophores on head + trunk melanophores on head + trunk
Urostyle region   early unpigmented late unpigmented
Peritoneum covered with melanophores
Pectorals normal without melanophores
Pelvics normal (i.e. small or absent) with melanophores
At 8 mm the urostyle has turned up. The intestine is covered with melanophores. Many melanophores on the jaws.
  L 1st feeding Ref. Months of presence of larvae
max     Jan Feb Mar Apr
min   May Jun Jul Aug
mod 4.2   Sep Oct Nov Dec
Water parameters     Metric characters
Entered by: Papasissi,Christine - 29.10.90
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php script by kbanasihan, 09/07/10 ,  last modified by sortiz, 09/08/17