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Larvae Information Summary for
Scopelosaurus harryi
| Main Ref: | Watson, W. and E.M. Sandknop 1996 | |||
Yolk-sac larvae
| max | min | mod | Ref. | |
| Length at birth (mm) | 4 | 35934 | ||
| Preanal L. % TL | 45 | 31 |
| Place of development | planktonic | |||
| Larval area | Northeastern Pacific (California Current region); Northwestern Pacific (Japan) | |||
| Yolk-sac | Ref: | |||
| Yolk | Oil globules | |||
| Rows on tail | no rows | |||
| Other melanophores on tail | no other melanophores | |||
| Melanophores on head + trunk | no melanophores on head or trunk | |||
Post larvae
| Striking feature | other | |||
| Striking shape lateral | eel-like | dorsal | ||
| Striking feature | other | |||
| Shape of gut | tube-like | |||
| Gas bladder early | absent | late | absent | |
| 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 | no melanophores on head or trunk | |||
| Pigmentation late | ||||
| Rows on tail | ventral + lateral row | |||
| Other melanophores on tail | no other melanophores | |||
| Melanophores on head + trunk | no melanophores on head or trunk | |||
| Urostyle region early | pigmented | late | pigmented | |
| Peritoneum | without melanophores | |||
| Pectorals | normal without melanophores | |||
| Pelvics | fin rays only without melanophores | |||
| Elongate, slender; horizontal elongate oval eyes; pigment largely limited to caudal peduncle; larvae shrink during transformation. Pigmentation: Yolk-sac and preflexion: 0 to few on ventral margin and ventral finfold near middle of tail (usually none before about 8-9 mm), located nearer finfold margin with increasing larval length; on dorsal and ventral margins of last few myomeres and notochord tip, extending onto caudal finfold, forming dorsal and ventral bands by about 11 mm; laterally on notochord tip by about 7 mm. Flexion-postflexion: series along distal margin of hypurals after about 14 mm; by 33 mm, laterally on caudal peduncle and embedded along ventral margin of caudal peduncle; few on anal fin rays after 22 mm; few on caudal fin rays, decreasing with growth. Sequence of fin development: caudal, anal, pelvics and adipose, dorsal and pectorals. Sequence of fin development: caudal, anal, dorsal, pectorals, pelvics (family). | ||||
Meristic characters
| max | min | mod | Ref. | |
| Total number of myomeres | 61 | 57 | 35934 |
| 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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