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Larvae Information Summary for
Acanthopsetta nadeshnyi
| 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) | 3 | |||
| Preanal L. % TL |
| Place of development | planktonic | |||
| Larval area | Bering Sea, 54-66° N | |||
| Yolk-sac | Ref: | |||
| Yolk | Oil globules | |||
| Rows on tail | ||||
Post larvae
| Striking feature | none | |||
| Striking shape lateral | normal (not striking) | dorsal | other | |
| Striking feature | none | |||
| Shape of gut | ||||
| Gas bladder early | late | |||
| Spinal armature early | late | |||
| Rows on tail | ventral row | |||
| Melanophores on head + trunk | melanophores on head | |||
| Pigmentation late | ||||
| Rows on tail | dorsal + ventral + lateral row | |||
| Other melanophores on tail | one dorso-ventral cluster or band | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Peritoneum | covered with melanophores | |||
| Pectorals | normal without melanophores | |||
| Pelvics | normal (i.e. small or absent) without melanophores | |||
| Diagnostic characters: pigment pattern without bands; presence of hypaxial pigment; presence of pigment around urostyle. Pigment: series of ventral midline melanophores extending around urostyle; several spots above notochord, number increases with development; during flexion, pigment develops along hypaxial myomeres; initially, gut pigment restricted to dorsal and anteroventral surface; with development it extends posterodorsally and along ventral surface. Sequence of fin development: caudal, dorsal and anal, pelvics, pectorals. | ||||
Meristic characters
| max | min | mod | Ref. | |
| Total number of vertebrae | 42 | 39 | 265 |
| 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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