Larvae Summary

Larvae Information Summary for Menticirrhus saxatilis

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Main Ref:

Scotton, L.N., R.E. Smith, N.S. Smith, K.S. Price and D.P. de Sylva 1973

Yolk-sac larvae

	max	min	mod	Ref.
Length at birth (mm)	2.5	2
Preanal L. % TL

Place of development	planktonic
Larval area	Delaware Bay
Yolk-sac	spherical	Ref:
Yolk		Oil globules
Rows on tail	lateral row
Other melanophores on tail	no other melanophores
Melanophores on head + trunk	melanophores on head + trunk
At hatching, head is deflected. Yolk almost completely absorbed four days after hatching (length about 2.7 mm). At 3.7 mm, head is large and deep; line of melanophores extending from ventral surface of gut dorsally, around cleithrum and then mid-laterally towards tail.

Post larvae

Striking feature	none
Striking shape lateral	other	dorsal
Striking feature	none
Shape of gut	triangular
Gas bladder early		late
Spinal armature early		late
Pigmentation early
Rows on tail	ventral + lateral row
Other melanophores on tail	no other melanophores
Melanophores on head + trunk	melanophores on head + trunk
Pigmentation late
Rows on tail	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	without melanophores
Pectorals	normal
Pelvics	normal (i.e. small or absent)
At 4.5 mm, most pigmentation lost from gut; mid-lateral and ventral series still present; depth of head greater in proportion to SL than at 10 mm and larger. At 5.0 mm, nearly all soft dorsal and anal rays present. At 10.0 mm, full complement of fin rays present; body covered by melanophores as is spinous dorsal (Ref. 40810).

	L 1st feeding	Ref.	Months of presence of larvae Ref.
max			Jan	Feb	Mar	Apr
min	2.7	13501	May	Jun	Jul	Aug
mod			Sep	Oct	Nov	Dec

Water parameters Metric characters

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