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Larvae Information Summary for  Sebastes rastrelliger
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Main Ref: Moser, H.G. 1996
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm)     4.3 36715
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 ventral + lateral row
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on head + trunk
Rows on tail ventral row
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on head + trunk
Pectorals normal without melanophores
Pelvics normal (i.e. small or absent) without melanophores
In early preflexion larvae, heavy pigment on head, dorsum, ventral margin of tail, and jaws; in later preflexion larvae, pigment on nares and on lateral midline of tail (on surface and internally); pectoral fin lacks pigment; weakly developed parietal, postocular, pterotic, and preopercular spines. Pigmentation: Preflexion: initially, on midbrain, on lower jaw tip (some specimens), laterally on upper and lower jaws (some specimens), on nape, dorsally and ventrally on gut, 1 anterior to anus, about 35-50 in series on dorsum (from nape to posteriormost myomere), heavy on entire ventral margin of tail, on lateral midline of tail (some specimens), laterally at cleithrum (some specimens), at angular (some specimens), and on forebrain (some specimens); by 5.0 mm, lower jaw tip and laterally on upper and lower jaws (most specimens), lateral midline of tail (most specimens), laterally on gut (most specimens), laterally on cleithrum (most specimens), otic region (most specimens), and at nares (some specimens). Flexion: more on head and nape; up to 90 in series on dorsum; series on ventral margin of tail becoming embedded; more in lateral midline series; internally above spinal column on tail; lacking on pectoral fins. Juvenile: heavy on head, except on cheek; heavy on body, except ventrally on gut; basally on second dorsal, anal, and pelvics; at mid-region of first dorsal fin.
  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. - 08.12.00
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