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Larvae Information Summary for  Morone saxatilis
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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) 3.7 2    
Preanal L. % TL        
Place of development  
Larval area Delaware Bay (USA)
Yolk-sac elongated     Ref:  
Yolk   Oil globules  
Rows on tail no rows
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on trunk
Large yolk-sac extends in front of head. At about 5 mm, part of yolk absorbed; melanophores along ventral surface.
Post larvae
Striking feature none
Striking shape lateral normal (not striking) dorsal  
Striking feature none
Shape of gut elongated
Gas bladder   early pigmented late  
Spinal armature   early no spines late no spines
Pigmentation early
Rows on tail no rows
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on trunk
Pigmentation late
Rows on tail no rows
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on trunk
Urostyle region   early unpigmented late unpigmented
Pectorals normal  
Pelvics normal (i.e. small or absent)  
At 7.5 mm, body slender, yolk-sac absorbed; pigmentation on ventral part of body, upper surface of air bladder and visceral mass; teeth visible. At about 10 mm, dorsal and anal fins somewhat differentiated; caudal rays well developed. At 15 mm, fins well formed, except for spinous dorsal and pelvics. Fish between 9-15 mm possess 2 anal spines; fish greater than 20 mm have 3 anal spines.
  L 1st feeding Ref. Months of presence of larvae    Ref. 
max 7.5 14096 Jan Feb Mar Apr
min   May Jun Jul Aug
mod     Sep Oct Nov Dec
Water parameters     Metric characters
Entered by: Luna,Susan M. - 14.12.01
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