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Larvae Information Summary for
Lestidiops pacificus
| Main Ref: | Ambrose, D.A. 1996 | |||
Yolk-sac larvae
| max | min | mod | Ref. | |
| Length at birth (mm) | ||||
| Preanal L. % TL | 62 | 25 |
| Place of development | planktonic | |||
| Larval area | California Current region | |||
| Yolk-sac | Ref: | |||
| Yolk | Oil globules | |||
| Rows on tail | ||||
| Other melanophores on tail | ||||
Post larvae
| Striking feature | duck-billed shape of head | |||
| Striking shape lateral | normal (not striking) | dorsal | ||
| Striking feature | duck-billed shape of head | |||
| Shape of gut | elongated | |||
| 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 | no other melanophores | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Pigmentation late | ||||
| Rows on tail | ventral + lateral row | |||
| Other melanophores on tail | no other melanophores | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Urostyle region early | unpigmented | late | pigmented | |
| Peritoneum | with row of melanophores | |||
| Pectorals | normal without melanophores | |||
| Pelvics | fin rays only without melanophores | |||
| In preflexion-flexion larvae, pigment absent from dorsal body margin and caudal finfold, embedded pigment behind eye, and pigment rows above and below notochord in caudal peduncle; at postflexion stage, pigment row along tail margin between anus and anal fin and crescent-shaped row of pigment between fore- and midbrain; in transformation-juvenile specimens, 11-12 peritoneal pigment patches, ventral half of caudal fin more heavily pigmented than dorsal half, and anus under dorsal fin. Pigmentation: Preflexion: on lip; internal behind eye; along ventral body margin where anal fin will develop; peritoneal patches increase from 1 to 4. Flexion-postflexion: crescent-like row between fore- and midbrain dorsally; infraorbital row; posterior to lower jaw; row along notochord and along the ventral body margin in the caudal peduncle region; peritoneal patches increase to 4-12. Transformation-juvenile: on snout, isthmus; over cranium; at base of dorsal fin, ventral lobe of caudal fin; gradually extending along dorsum; 11-12 peritoneal patches. Sequence of fin development: caudal and anal, dorsal, pectorals, pelvics, adipose. | ||||
| 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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