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Larvae Information Summary for  Micropogonias undulatus
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Main Ref: Scotton, L.N., R.E. Smith, N.S. Smith, K.S. Price and D.P. de Sylva 1973
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm)        
Preanal L. % TL        
Place of development planktonic
Larval area Delaware Bay
Yolk-sac       Ref:  
Yolk   Oil globules  
Rows on tail  
Other melanophores on tail  
Post larvae
Striking feature none
Striking shape lateral normal (not striking) dorsal  
Striking feature none
Shape of gut triangular
Gas bladder   early   late  
Spinal armature   early opercular spines only late  
Pigmentation early
Rows on tail ventral row
Other melanophores on tail no other melanophores
Melanophores on head + trunk no melanophores on head or trunk
Pigmentation late
Rows on tail ventral row
Other melanophores on tail no other melanophores
Melanophores on head + trunk no melanophores on head or trunk
Urostyle region   early unpigmented late unpigmented
Peritoneum covered with melanophores
Pectorals normal without melanophores
Pelvics normal (i.e. small or absent) without melanophores
At 2.8 mm, mouth large and nearly vertical; dark crescent-shaped peritoneum above visceral mass. At 3.6 mm, rudimentary rays of caudal fin point ventrally from slightly upturned notochord. At 4.0 mm, caudal rays more horizontal. At 6.0 mm, anal fin rays differentiated, usually being II,8; soft dorsal rays somewhat differentiated; distinctive pigmentation consists of 2 small chromatophores at base of anal fin; 3 to 5 chromatophores lie posterior to anal fin along caudal peduncle. At 11 mm, full complement of dorsal and anal rays present, caudal fin asymmetrical and somewhat pointed, thus separating this species from Leiostomus xanthurus.
  L 1st feeding Ref. Months of presence of larvae    Ref. 
max     Jan Feb Mar Apr
min   May Jun Jul Aug
mod     Sep Oct Nov Dec
Water parameters     Metric characters
Entered by: Luna,Susan M. - 05.12.01
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