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Larvae Information Summary for  Eutrigla gurnardus
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Main Ref: Russell, F.S. 1976
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm) 4 3 3.5  
Preanal L. % TL 50.8 44.2    
Place of development planktonic
Larval area to be filled
Yolk-sac elongated   pigmented Ref:  
Yolk unsegmented Oil globules one oil globuleposteriorventralpigmented
Rows on tail no rows
Other melanophores on tail tail partly covered with melanophores
Melanophores on head + trunk melanophores on head + trunk
During development the pectoral fin enlarges quickly, and there is a postanal ventral row of melanophores.
Post larvae
Striking feature duck-billed shape of head
Striking shape lateral normal (not striking) dorsal normal (not striking)
Striking feature duck-billed shape of head
Shape of gut triangular
Gas bladder   early invisible late invisible
Spinal armature   early no spines late several different spines
Pigmentation early
Rows on tail ventral row
Other melanophores on tail no other melanophores
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 strikingly large with rows of melanophores
Pelvics normal (i.e. small or absent) with melanophores
Armature on the head develops at about 7 mm. Radially arranged melanophores along the outer marginal region of the pectorals.
Meristic characters
  max min mod Ref.
Total number of vertebrae 39 37 38 263
  L 1st feeding Ref. Months of presence of larvae
max     Jan Feb Mar Apr
min   May Jun Jul Aug
mod 4.7 41 Sep Oct Nov Dec
Water parameters     Metric characters
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