Larvae Information Summary for  Engraulis australis
( not available )

Main Ref: Miskiewicz, A.G. and F.J. Neira 1998
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm) 2.9      
Preanal L. % TL 80 69    
Place of development planktonic
Larval area Lake Macquarie and Botany Bay (NSW), Swan Estuary (WA)
Yolk-sac       Ref:  
Yolk   Oil globules no oil globule
Rows on tail  
Other melanophores on tail  
Post larvae
Striking feature none
Striking shape lateral short and/or deep dorsal compressed
Striking feature none
Shape of gut elongated
Gas bladder   early visible late pigmented
Spinal armature   early   late  
Pigmentation early
Rows on tail ventral row
Other melanophores on tail tail partly covered with melanophores
Melanophores on head + trunk melanophores on head + trunk
Pigmentation late
Rows on tail ventral row
Other melanophores on tail one dorso-ventral cluster or band
Melanophores on head + trunk melanophores on head + trunk
Urostyle region   early pigmented late pigmented
Peritoneum with row of melanophores
Pectorals fin rays only without melanophores
Pelvics fin rays only without melanophores
Diagnostic characters: cross-hatched pattern of muscle fibers visible until 12 mm; anus migrates anteriorly from myomere 33 to 26 between 2.9 and 32.2 mm; posterior end of dorsal fin overlaps anterior end of anal fin by up to 3 myomeres; no melanophores along dorsal surface of hindgut prior to flexion stage. Pigmentation: larvae are lightly pigmented. Pigment varies in intensity depending on the locality; larvae caught in estuaries such as Wilson Inlet tend to be more heavily pigmented than those caught in marine waters (Ref. 33832). Sequence of fin development: dorsal (4.5-12.7 mm); caudal 5.0-11.1 mm); anal (5.0-13.3 mm); pelvic (13.8-20.2 mm); pectoral 20.2->32.2 mm). Gas bladder inflated only in larvae caught at night (Ref. 33832). Gut initially very long, long in transforming larvae, straight with striated hindgut (Ref. 33832). Larvae have been caught in Western Australia in the Swan and Nornalup-Walpole estuaries, and in Wilson Inlet in most months, with peak abundances between October and December (Ref. 33819, 33834, 33835, 33820); in Victoria in Port Phillip Bay and the Gippsland Lakes (Ref. 26501, 26502, 28472); and in New South Wales in Lake Macquarie, Tuggerak Lakes, and in coastal waters of northern and central New South Wales, and off Sydney (Ref. 33821, 33621, 33622).
Meristic characters
  max min mod Ref.
Total number of myomeres 47 44   33832
Preanal number of myomeres 33 26   33832
  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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