Larvae Summary

Larvae Information Summary for Gymnapistes marmoratus

( not available )

Main Ref:

Neira, F.J., A.G. Miskiewicz and T. Trnski 1998

Yolk-sac larvae

	max	min	mod	Ref.
Length at birth (mm)	2.6
Preanal L. % TL	63	55

Place of development
Larval area	Lower Swan Estuary (WA); Port Phillip Bay (Vic); Gippsland Lakes (Vic)
Yolk-sac		Ref:
Yolk		Oil globules
Rows on tail
Other melanophores on tail

Post larvae

Striking feature	none
Striking shape lateral	normal (not striking)	dorsal	normal (not striking)
Striking feature	none
Shape of gut	spherical or gut loop
Gas bladder early	pigmented	late
Spinal armature early	opercular spines only	late	several different spines
Pigmentation early
Rows on tail	ventral row
Other melanophores on tail	no other melanophores
Melanophores on head + trunk	melanophores on trunk
Pigmentation late
Rows on tail	dorsal + ventral + lateral 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
Pectorals	strikingly large with marginal melanophores
Pelvics	normal (i.e. small or absent) melanophores at fin base
Diagnostic characters: pectoral fins typically with 11 rays, pigmented distally; single row of 16-22 small melanophores along ventral midline of tail; no pigment laterally along tail until postflexion stage. Sequence of fin formation: pectoral (3.3-4.7 mm); caudal (4.6-6.0 mm); pelvic (4.8-9.3 mm); dorsal (5.0-9.0 mm); anal (5.0-9.0 mm).

Meristic characters

	max	min	mod	Ref.
Total number of myomeres	29	28		33616
Preanal number of myomeres	11	9		33616

	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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