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Larvae Information Summary for  Pomatoschistus minutus
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Main Ref: Russell, F.S. 1976
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm)     3  
Preanal L. % TL     50.6 65
Place of development planktonic
Larval area to be filled
Yolk-sac ovoid   pigmented Ref:  
Yolk   Oil globules more than one oil globule
Rows on tail ventral row
Other melanophores on tail one dorso-ventral cluster or band
Melanophores on head + trunk melanophores on head + trunk
One or 2 postanal dorsal melanophores. There is a melanophore on the head, and sometimes on the lower jaw.
Post larvae
Striking feature none
Striking shape lateral normal (not striking) dorsal normal (not striking)
Striking feature none
Shape of gut elongated
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 without melanophores
Pelvics normal (i.e. small or absent)  
At a length of 8 mm the postanal dorsal melanophores disappear. At 12 mm there may be a single postanal melanophore behind the second dorsal fin and a row of melanophore from the throat to the base of the pelvic fin.
Meristic characters
  max min mod Ref.
Total number of vertebrae 33 30 32 65
  L 1st feeding Ref. Months of presence of larvae
max     Jan Feb Mar Apr
min   May Jun Jul Aug
mod 3.5 37 Sep Oct Nov Dec
Water parameters     Metric characters
Entered by: Papasissi,Christine - 19.10.90
Modified by: Papasissi,Christine - 25.05.92
Checked by: Giovanardi,Otello - 15.02.91
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