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Larvae Information Summary for  Chauliodus macouni
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Main Ref: Moser, H.G. 1996
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm)   4.7    
Preanal L. % TL        
Place of development planktonic
Larval area California Current region
Yolk-sac       Ref:  
Yolk segmented Oil globules no oil globule
Rows on tail no rows
Other melanophores on tail no other melanophores
Melanophores on head + trunk no melanophores on head or trunk
Post larvae
Striking feature light organs
Striking shape lateral normal (not striking) dorsal  
Striking feature light organs
Shape of gut elongated
Gas bladder   early   late  
Spinal armature   early   late  
Pigmentation early
Rows on tail no rows
Other melanophores on tail no other melanophores
Melanophores on head + trunk no melanophores on head or trunk
Pigmentation late
Rows on tail no rows
Other melanophores on tail no other melanophores
Melanophores on head + trunk no melanophores on head or trunk
Urostyle region   early unpigmented late unpigmented
Peritoneum without melanophores
Pectorals normal without melanophores
Pelvics fin rays only without melanophores
Small head, elliptical eyes, long gut, slender body; median finfold shape; lack of pigmentation; slightly trailing gut >90% of body length; all fins except caudal fin late-forming, dorsal fin far forward. Pigmentation: unpigmented except for fan-shaped caudal finfold in yolksac larvae (Ref. 35899). Sequence of fin development: caudal, dorsal, anal, pelvics, pectorals form late in postflexion larvae in adult position.
  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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