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Larvae Information Summary for  Scophthalmus aquosus
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Main Ref: Fahay, M. 1983
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm)     2 68
Preanal L. % TL 50      
Place of development planktonic
Larval area Mid-Atlantic Bight (Cape Hatteras to the Southern Scotian Shelf; Delaware Bay)
Yolk-sac       Ref:  
Yolk   Oil globules  
Rows on tail no rows
Other melanophores on tail tail partly covered with melanophores
Melanophores on head + trunk melanophores on head + trunk
Heavily pigmented from head to midtail, with posterior 1/3 unpigmented.
Post larvae
Striking feature lower jaw strongly projecting
Striking shape lateral short and/or deep dorsal  
Striking feature lower jaw strongly projecting
Shape of gut triangular
Gas bladder   early   late  
Spinal armature   early no spines late no spines
Pigmentation early
Rows on tail no rows
Other melanophores on tail tail partly covered with melanophores
Melanophores on head + trunk melanophores on head + trunk
Pigmentation late
Rows on tail no rows
Other melanophores on tail tail partly covered with melanophores
Melanophores on head + trunk melanophores on head + trunk
Urostyle region   early unpigmented late unpigmented
Pectorals normal  
Pelvics other  
Body deep, especially in gut area, and compressed; pelvic fins unequal in size, both bases long with left longer, both origins on urohyal, left base on ventral midline, right base above midline; no elongate rays. Eye begins to move to the left side at about 6.5 mm. Migration of eye nearly complete at about 13 mm. Late postlarval and adult windowpane separable from all other Bothidae due to left ventral fin being as wide at the base as it is at the tip. Pigmentation: bars of pigment form and extend onto fins, with pronounced contrast between pigmented and unpigmented areas. Sequence of fin formation: pectoral fin rays form after transformation; all fin rays complete at about 8.5 mm TL.
Meristic characters
  max min mod Ref.
Total number of myomeres 36 34   68
  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
Entered by: Luna,Susan M. - 11.08.00
Modified by: Luna,Susan M. - 29.01.02
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