| FishBase |
Larvae Information Summary for
Cyclothone acclinidens
| Main Ref: | Watson, W. 1996 | |||
Yolk-sac larvae
| max | min | mod | Ref. | |
| Length at birth (mm) | ||||
| Preanal L. % TL |
| Place of development | planktonic | |||
| Larval area | Northeastern Pacific (California Current region); Northwestern Pacific (Japan) | |||
| Yolk-sac | Ref: | |||
| Yolk | Oil globules | |||
| Rows on tail | ||||
| Other melanophores on tail | ||||
Post larvae
| Striking feature | none | |||
| Striking shape lateral | normal (not striking) | dorsal | ||
| Striking feature | none | |||
| Shape of gut | tube-like | |||
| Gas bladder early | pigmented | late | pigmented | |
| Spinal armature early | late | |||
| Pigmentation early | ||||
| Rows on tail | no rows | |||
| Other melanophores on tail | one dorso-ventral cluster or band | |||
| Melanophores on head + trunk | melanophores on trunk | |||
| Pigmentation late | ||||
| Rows on tail | no rows | |||
| Other melanophores on tail | one dorso-ventral cluster or band | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Urostyle region early | pigmented | late | pigmented | |
| Peritoneum | with row of melanophores | |||
| Pectorals | normal without melanophores | |||
| Pelvics | normal (i.e. small or absent) without melanophores | |||
| Myoseptal pigment above gut; pigment over notochord beginning posteriorly after 6.5 mm, spreading forward to 2-3 melanophores past dorsal fin origin by transformation; pigment ventrally on tail beginning at postanal myomere 0-2 (usually 1); 8 cartobranchial gill rakers (by about 11 mm). Pigmentation: Preflexion-postflexion: pairs along sides of gut; over gas bladder; 4-9 on myosepta over gut after about 4 mm; 9-13 (usually 10-11) on ventral margin of tail from postanal myomere 1-3 (usually 2), gradually becoming internal; double row on anal fin base; 1 under notochord tip/along parhypural; 0-1 at center of hypural margin; 0-1 over notochord tip; series over notochord beginning at myomere 28-30 at 6.5-7 mm, extending to myomere 12-15 by about 10 mm. Transformation: between neural and haemal spines; on hypurals; on hindbrain; on margins of branchiostegal membranes; on dorsal fin and anal fin bases; external midlaterally beginning at about 15 mm. Sequence of fin development: caudal, anal, dorsal, pelvics, pectorals. | ||||
Meristic characters
| max | min | mod | Ref. | |
| Total number of myomeres | 33 | 31 | 35800 | |
| Preanal number of myomeres | 16 | 12 | 35800 |
| 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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