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Larvae Information Summary for  Parophidion vassali
( not available )

Main Ref: Bertolini, F., U. D'Ancona, E. Padoa Montalenti, S. Ranzi, L. Sanzo, A. Sparta, E. Tortonese and M. Vialli 1956
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm)     3.6  
Preanal L. % TL     48  
Place of development planktonic
Larval area to be filled
Yolk-sac ovoid     Ref:  
Yolk unsegmented Oil globules no oil globule
Rows on tail ventral row
Other melanophores on tail tail with single melanophore
Melanophores on head + trunk melanophores on head + trunk
Primordial fin without melanophores. 15-16 preanal segments and 42-45 postanal ones.
Post larvae
Striking feature other
Striking shape lateral eel-like dorsal  
Striking feature other
Shape of gut elongated
Gas bladder   early visible late  
Spinal armature   early no spines late no spines
Pigmentation early
Rows on tail dorsal + ventral row
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on trunk
Pigmentation late
Rows on tail dorsal + ventral row
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on trunk
Urostyle region   early pigmented late pigmented
Peritoneum with row of melanophores
Pectorals normal  
Pelvics normal (i.e. small or absent)  
The postanal ventral row of melanophores starts from the anus to the end of the tail. The dorsal postanal row extends in the urostyle region. At 17mm: D 128; A 110.
Meristic characters
  max min mod Ref.
Total number of myomeres 74 72 70  
Preanal number of myomeres 16 15 15  
  L 1st feeding Ref. Months of presence of larvae
max     Jan Feb Mar Apr
min   May Jun Jul Aug
mod 4   Sep Oct Nov Dec
Water parameters     Metric characters
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