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Larvae Information Summary for
Mallotus villosus
| Main Ref: | Matarese, A.C., A.W. Kendall, D.M. Blood and M.V. Vinter 1989 | |||
Yolk-sac larvae
| max | min | mod | Ref. | |
| Length at birth (mm) | ||||
| Preanal L. % TL |
| Place of development | planktonic | |||
| Larval area | Northeastern Pacific; Northwestern Pacific | |||
| Yolk-sac | Ref: | |||
| Yolk | Oil globules | |||
Post larvae
| Striking feature | duck-billed shape of head | |||
| Striking shape lateral | eel-like | dorsal | ||
| Striking feature | duck-billed shape of head | |||
| Shape of gut | tube-like | |||
| Gas bladder early | late | |||
| Spinal armature early | late | |||
| Distinguished from other clupeiforms by: higher number of myomeres (62-73); single rather than double row of midventral melanophores below gut; greater gut length (75% SL); presence of adipose fin. Distinguished from other osmerids by: combination of greater number of pectoral fin rays (16-21) and anal fin rays (16-23). Pigment: single row of melanophores along ventral gut midline; single row of postanal ventral melanophores developing into double row (ventral view). Sequence of fin development: probably caudal, dorsal, anal, pelvics, pectorals. | ||||
Meristic characters
| max | min | mod | Ref. | |
| Total number of myomeres | 73 | 62 | 265 |
| L 1st feeding | Ref. |
Months of presence of larvae
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| max | Jan | Feb | Mar | Apr | ||
| min | May | Jun | Jul | Aug | ||
| mod | Sep | Oct | Nov | Dec | ||
| Water parameters Metric characters |
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