Larvae Information Summary for Osmerus mordax
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Main Ref: Fahay, M. 1983
Yolk-sac larvae
  min max mod Ref.
Length at birth (mm) 5 6    
Preanal L. % TL        
Place of development planktonic
Larval area Mid-Atlantic Bight
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: adipose fin present; air bladder obvious in sizes greater than 15 mm. Pigmentation: up to 15 mm, may have ventral pair of spots anterior to pectoral fins. Sequence of fin formation: fins well developed at about 15 mm.
Meristic characters
  min max mod Ref.
Total number of myomeres 62 64   68
Preanal number of myomeres 38 43   68
  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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