Larvae Information Summary for  Sebastes paucispinis
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Main Ref: Moser, H.G. 1996
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm) 5 4    
Preanal L. % TL        
Place of development planktonic
Larval area California Current region
Yolk-sac       Ref:  
Yolk   Oil globules  
Rows on tail  
Other melanophores on tail  
Post larvae
Striking feature duck-billed shape of head
Striking shape lateral normal (not striking) dorsal  
Striking feature duck-billed shape of head
Shape of gut triangular
Gas bladder   early   late  
Spinal armature   early several different spines late several different spines
Pigmentation early
Rows on tail no rows
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on trunk
Rows on tail no rows
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on head + trunk
Pectorals strikingly large with marginal melanophores
Pelvics strikingly large or elongated with melanophores
Early development of elongate pigmented paired fins; midlateral pigment blotch on caudal peduncle; gap between anus and anal fin origin. In early larvae, few melanophores in postanal ventral series, no dorsal series, pectoral fins heavily pigmented distally; pectoral fin becomes very elongate and aliform with heavily pigmented distal margin; pelvic fins elongate and heavily pigmented on distal margin; head spines strong in mid-larval period; pelagic juveniles with distinctive barring. Pigmentation: Preflexion: initially, a shield over gut, heavy distally on pectoral fin blade, 6-14 in postanal ventral midline (from 3rd-4th to 14th-17th postanal myomere); by 6.0 mm, above mid- and hindbrain and concentrated at distal margin of pectoral fin blade. Flexion: on nape; on distal margin of pelvic fins; on lateral region of hypurals; 1 on upper opercular region at end of stage. Postflexion: by 10.0 mm, a blotch on upper opercular and lateral hypural regions; by 15.0 mm, on dorsum along each side of dorsal fin, on membrane of first dorsal fin; larger larvae develop 3 saddles below first dorsal fin and 1 below second dorsal fin. Pelagic juveniles: saddles form anterior and posterior to saddle at second dorsal and posteriorly on caudal peduncle; 3rd and 5th saddles extend ventral to form irregular bars. Sequence of fin development: pectorals, caudal and dorsal and anal and pelvics.
  L 1st feeding Ref. Months of presence of larvae
max     Jan Feb Mar Apr
min   May Jun Jul Aug
mod     Sep Oct Nov Dec
Water parameters     Metric characters
Entered by: Luna,Susan M. - 22.02.00
Modified by: Luna,Susan M. - 08.12.00
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