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Larvae Information Summary for  Scomber japonicus
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Main Ref: Demir, N. 1961
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm)     2.7  
Preanal L. % TL     47.3  
Place of development planktonic
Larval area Northwestern Pacific (Japan; Taiwan Strait)
Yolk-sac ovoid   pigmented Ref:  
Yolk unsegmented Oil globules one oil globuleposteriorventralpigmented
Rows on tail ventral row
Other melanophores on tail tail with single melanophore
Melanophores on head + trunk melanophores on head + trunk
Post larvae
Striking feature none
Striking shape lateral normal (not striking) dorsal normal (not striking)
Striking feature none
Shape of gut triangular
Gas bladder   early pigmented late pigmented
Spinal armature   early no spines late no spines
Pigmentation early
Rows on tail ventral row
Other melanophores on tail tail with single melanophore
Melanophores on head + trunk melanophores on head + trunk
Pigmentation late
Rows on tail ventral row
Other melanophores on tail tail with single melanophore
Melanophores on head + trunk melanophores on head + trunk
Urostyle region   early pigmented late pigmented
Peritoneum covered with melanophores
Pectorals normal  
Pelvics normal (i.e. small or absent)  
At 7 mm, appearance of buds which are the initial stages in the growth of the pelvic fins.
Meristic characters
  max min mod Ref.
Total number of vertebrae 31 30 30 263
  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
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