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Larvae Information Summary for  Lampetra pacifica
( not available )

Main Ref: Renaud, C.B. 2011
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm)        
Preanal L. % TL        
Place of development  
Larval area Global
Yolk-sac       Ref:  
Yolk   Oil globules  
Post larvae
Striking feature  
Striking shape lateral   dorsal  
Striking feature  
Shape of gut  
Gas bladder   early   late  
Spinal armature   early   late  
Ammocoetes: estimated max. size at least 175 mm TL (based on adult size), but the largest recorded 148 mm TL. Body proportions, as percentage of TL (based on mean values of four samples totaling 41 specimens measuring 75-143 mm TL): prebranchial length, 7.1-8.8; branchial length, 11.5-13.1; trunk length, 49.5-52.6; tail length, 27.5-28.2. Trunk myomeres, 52-57. Body coloration unrecorded. Extent of pigmentation (- = absence to trace; + = 1% to under 25%; ++ = 25% to under 75%; +++ = 75% or more): upper lip, + (80% of specimens); subocular, - (29%) or + (44%) but the ammocoete in fig. 8 of the original description shows +++; lower prebranchial, - (33%) or + (60%) but the ammocoete in fig. 8 of the original description shows ++; upper branchial, ++ (% not known); caudal fin, + (84%); tongue precursor bulb, - or + (both 47%) or ++ (7%). Metamorphosing ammocoetes: 110-160 mm TL.
  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: Hilomen,Teresa - 22.11.13
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