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Larvae Information Summary for
Sebastes diploproa
| Main Ref: | Moser, H.G. 1996 | |||
Yolk-sac larvae
| max | min | mod | Ref. | |
| Length at birth (mm) | 5.2 | 4.4 | ||
| Preanal L. % TL |
| Place of development | planktonic | |||
| Larval area | California Current region | |||
| Yolk-sac | Ref: | |||
| Yolk | Oil globules | |||
| Rows on tail | ||||
| Other melanophores on tail | ||||
| Extrusion larvae: dorsolaterally on gut, 17-21 in postanal ventral midline series (from 4th or 5th to 16th-17th postanal myomere), and 1 or more at hypural. | ||||
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 | triangular | |||
| Gas bladder early | late | |||
| Spinal armature early | several different spines | late | several different spines | |
| Pigmentation early | ||||
| Rows on tail | dorsal row | |||
| Other melanophores on tail | no other melanophores | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Pigmentation late | ||||
| Rows on tail | dorsal + lateral row | |||
| Other melanophores on tail | no other melanophores | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Urostyle region early | pigmented | late | pigmented | |
| Pectorals | normal with rows of melanophores | |||
| Pelvics | normal (i.e. small or absent) with melanophores | |||
| No dorsal midline pigment in preflexion stage; hypural melanophore; distinctive sequence of pigment augmentation in larvae and pelagic juveniles; head spines relatively strong in flexion and postflexion stages. Pigmentation: Preflexion: initially, postanal ventral series reduced to 12-14, patch above midbrain, 1 to several at nape, anteriorly on lower jaw, scattered on pectoral fin blade (except distal margin), and on inner surface of pectoral fin base; by 5.0 mm, dorsolaterally on hindbrain, embedded anterior to gut, 1 to several in snout near jaw; above forebrain; on dorsal midline at caudal peduncle. Postflexion: increasing dorsally on anterior trunk along entire dorsum, laterally at caudal peduncle, on snout, posteriorly on head, on opercle, and on pelvic fins; head and body become solidly pigmented. Transformation-pelagic juvenile: second dorsal and anal fins with solid patch and first dorsal variegated. Sequence of fin development: pectorals, caudal, dorsal and anal, pelvics. Also Ref. 34817. | ||||
| 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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