Larvae Summary

Larvae Information Summary for Bregmaceros atlanticus

( not available )

Main Ref:

Okiyama, M. 1998

Yolk-sac larvae

	max	min	mod	Ref.
Length at birth (mm)			1.5	46075
Preanal L. % TL

Place of development	planktonic
Larval area	Northwestern Pacific (Japan)
Yolk-sac		Ref:
Yolk		Oil globules
Rows on tail
Other melanophores on tail

Post larvae

Striking feature	some dorsal fin rays very elongated
Striking shape lateral	normal (not striking)	dorsal
Striking feature	some dorsal fin rays very elongated
Shape of gut	triangular
Gas bladder early		late
Spinal armature early		late
Pigmentation early
Rows on tail	no rows
Other melanophores on tail	tail partly covered with melanophores
Melanophores on head + trunk	melanophores on head + trunk
Pigmentation late
Rows on tail	no rows
Other melanophores on tail	tail completely covered with melanophores
Melanophores on head + trunk	melanophores on head + trunk
Urostyle region early	pigmented	late	pigmented
Peritoneum	with row of melanophores
Pectorals	normal melanophores at fin base
Pelvics	with elongated fin rays
Occipital ray develops at around 5.0-5.5 mm SL. Pigmentation: At < or = 3 mm SL: Melanophore at angle of jaw and tip of lower jaw. Scattered melanophores, on head and over midbrain and at base of pectoral fin. Scattered, large internal stellate melanophores on side of body. Diffuse melanophores, some dendritic, on surface of trunk and tail. At 5-10 mm SL: Many melanophores over surface of head and body, including dorsal, anal and caudal fins. Larva more or less "completely" pigmented.

Meristic characters

	max	min	mod	Ref.
Total number of myomeres	55	50		46075

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

Water parameters Metric characters

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