Larvae Summary

Larvae Information Summary for Syngnathus phlegon

( not available )

Main Ref:

Bertolini, F., U. D'Ancona, E. Padoa Montalenti, S. Ranzi, L. Sanzo, A. Sparta, E. Tortonese and M. Vialli 1956

Yolk-sac larvae

	max	min	mod	Ref.
Length at birth (mm)			18	6733
Preanal L. % TL

Place of development	attached to parental body
Larval area	to be filled
Yolk-sac		Ref:
Yolk		Oil globules	more than one oil globule
Rows on tail	no rows
Other melanophores on tail	more than two dorso-ventral clusters or bands
Melanophores on head + trunk	melanophores on head + trunk
Snout concave and not very long. At the apex of snout jaws strongly prominent.

Post larvae

Striking feature	tube-like snout
Striking shape lateral	eel-like	dorsal
Striking feature	tube-like snout
Shape of gut	tube-like
Gas bladder early		late
Spinal armature early	no spines	late	no spines
Pigmentation early
Rows on tail	no rows
Other melanophores on tail	more than two dorso-ventral clusters or bands
Melanophores on head + trunk	melanophores on head + trunk
Pigmentation late
Rows on tail	no rows
Other melanophores on tail	more than two dorso-ventral clusters or bands
Melanophores on head + trunk	melanophores on head + trunk
Urostyle region early	pigmented	late	pigmented
Peritoneum	covered with melanophores
Pectorals	normal without melanophores
Pelvics	normal (i.e. small or absent)
Five postanal dark transverse stripes. At advanced larval stages very marked reliefs of the bony rings. 38-44 dorsal rays, extending over 12-15 segments, longer than the head, 3 anal, 13-15 pectoral and 10 caudal rays.

Meristic characters

	max	min	mod	Ref.
Total number of myomeres	69	64	67
Preanal number of myomeres	18	17	18

	L 1st feeding	Ref.	Months of presence of larvae
max			Jan	Feb	Mar	Apr
min			May	Jun	Jul	Aug
mod	18		Sep	Oct	Nov	Dec

Water parameters Metric characters

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