Larvae Information Summary for  Anisotremus davidsonii
( not available )

Main Ref: Watson, W. 1996
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm)        
Preanal L. % TL        
Place of development  
Larval area California Current Region
Yolk-sac       Ref:  
Yolk   Oil globules  
Rows on tail  
Other melanophores on tail  
Post larvae
Striking feature  
Striking shape lateral   dorsal  
Striking feature  
Shape of gut triangular
Gas bladder   early pigmented late pigmented
Spinal armature   early opercular spines only late opercular spines only
Pigmentation early
Rows on tail ventral row
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on head
Pigmentation late
Rows on tail ventral row
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on head + trunk
Urostyle region   early unpigmented late unpigmented
Peritoneum with row of melanophores
Large melanophore on peritoneum anterior to liver; melanophore(s) at anterior margin of forebrain after 6-7 mm; relatively short, compact gut; up to 8 small to moderate spines on posterior preopercular margin; myomeres 7-9+16-19=25-27 (usually 8+18) through flexion stage, 9-12+14-17 (usually 10+16) in postflexion stage. Pigmentation: Preflexion-postflexion: None externally on head except at angular before about 8-9 mm, then forming and increasing on dorsum and jaws; on gular and opercular areas beginning at about 12.0 mm; present or absent under hindbrain after about 3.3 mm; at anterior margin of forebrain after about 6-7 mm; 1-7 on ventral margin between isthmus and anus; on dorsal surface of gas bladder and gut; usually 1 anteriorly at liver; externally, laterally on abdominal area after about 8.0 mm; 10-23 (usually 13-17) on ventral margin of tail; on anal fin base after about 4.4 mm; anteriorly on dorsal margin after 12.0 mm; 0-few on hypural margin and caudal fin rays. Transformation: Dorsolateral and midlateral stripes; increasing on upper half of body; on first dorsal and caudal fin rays. Sequence of fin development: principal caudal fin rays, second dorsal and anal, procurrent caudal fin rays, pectoral, first dorsal, pelvic.
Meristic characters
  max min mod Ref.
Total number of myomeres 27 25   41570
  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. - 02.04.02
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