SeaLifeBase |
Main Ref: | Scheltema, R.S. and I.P. Williams 1983 |
max | min | mod | Ref. | |
Length at birth (mm) | ||||
Preanal L. % TL |
Place of development | planktonic | |||
Larval area | central Pacific Ocean | |||
Yolk-sac | Ref: | |||
Yolk | Oil globules | |||
Larval shell measures 1.26 mm in diameter. There is a sutural keel extending from the varix along the edge of the body whorl into the "keyhole" shaped umbilicus. Several heavy ribs radiate from this "keyhole." The larval shell is slightly convex apically when viewed dorsally. Anal keel is absent but has few radiating umbilical ribs. |
Striking feature | ||||
Striking shape lateral | dorsal | |||
Striking feature | ||||
Shape of gut | ||||
Gas bladder early | late | |||
Spinal armature early | late |
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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