Larvae Information Summary for  Lipolagus ochotensis
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Main Ref: Moser, H.G. and E.H. Ahlstrom 1996
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm)     3 35604
Preanal L. % TL        
Place of development planktonic
Larval area Northeastern Pacific (California Current region); Northwestern Pacific (Japan)
Yolk-sac       Ref:  
Yolk segmented Oil globules more than one oil globule
Rows on tail no rows
Other melanophores on tail tail with single melanophore
Melanophores on head + trunk no melanophores on head or trunk
Pigmentation: on notochord tip.
Post larvae
Striking feature stalked eyes
Striking shape lateral normal (not striking) dorsal  
Striking feature stalked eyes
Shape of gut elongated
Gas bladder   early   late  
Spinal armature   early no spines late no spines
Pigmentation early
Rows on tail no rows
Other melanophores on tail tail with single melanophore
Melanophores on head + trunk melanophores on trunk
Pigmentation late
Rows on tail lateral row
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on head + trunk
Urostyle region   early pigmented late pigmented
Peritoneum with row of melanophores
Pectorals normal melanophores at fin base
Pelvics normal (i.e. small or absent) without melanophores
Stalked eyes with stalk length increasing to about 20% HL at about 9 mm, decreasing to about 12% at flexion stage and to 2-4% in post flexion stage; notochord tip pigment in early preflexion stage; hypaxial pigment series along entire body, epaxial series on posterior 33% of body; pigment series along hindgut. Pigmentation: Preflexion: below pectoral fin base lateral to liver; on terminal gut section; series of about 5 on lower trunk, increasing to about 12 at end of stage; pair on terminal gut increases to series extending forwards to entire hindgut; internal series on isthmus; series on epaxial myomeres above hindgut. Flexion-postflexion: hypaxial series increases to about 1 per myomere from pectoral fin base to caudal fin; on hypural; on opercle; on upper and lower jaws; laterally on brain; postorbital and otic regions. Sequence of fin development: caudal, anal, dorsal, pectorals and pelvics. Distinguishing characters from other bathylagids with linear series of smaller melanophores: posterior gut melanophores larger and fewer; anterior region of gut lacks pigment; epaxial myomere series limited to posterior region; fin rays form in finfold, away from body margin. Distinguished from B. bericoides by: presumably due to unavailability of small larvae, eye stalks are longer at comparable stages. Distinguished from B. pacificus by: series of melanophores as opposed to isolated spots. Also Ref. 265.
  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
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