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Larvae Information Summary for
Cherublemma emmelas
| Main Ref: | Ambrose, D.A. 1996 | |||
Yolk-sac larvae
| max | min | mod | Ref. | |
| Length at birth (mm) | 3 | |||
| Preanal L. % TL | 44 | 38 |
| 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 | none | |||
| Striking shape lateral | normal (not striking) | dorsal | ||
| Striking feature | none | |||
| Shape of gut | spherical or gut loop | |||
| Gas bladder early | pigmented | late | ||
| Spinal armature early | no spines | late | no spines | |
| Pigmentation early | ||||
| Rows on tail | dorsal + ventral row | |||
| Other melanophores on tail | no other melanophores | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Pigmentation late | ||||
| Rows on tail | dorsal + ventral row | |||
| Other melanophores on tail | no other melanophores | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Urostyle region early | pigmented | late | pigmented | |
| Peritoneum | with row of melanophores | |||
| Pectorals | normal melanophores at fin base | |||
| Pelvics | fin rays only without melanophores | |||
| Low total vertebral (55-58) and dorsal fin ray (99-113) counts; gut loop formed by about 5.6 mm; head relatively large (HL >about 22% BL); in preflexion larvae, pigmentation on pectoral fin base by 4.5 mm; in flexion larvae, pigmentation on dorsal and anal fins and row posteriolaterally on tail; pigment increasing on peritoneum on postflexion larvae and juvenile specimens. Pigmentation: Preflexion: by 2.9 mm, still forming on eye, patches above, under, and anterior to gut; near anus, patches ventrally along tail, heavy dorsally and ventrally on posterior half of tail except at tip; by about 4.5 mm, on pectoral fin base, cheek, snout, lower jaw, gas bladder, and cleithral symphysis; by about 7 mm, on branchiostegal region, and midlaterally along posterior third of tail; by about 8 mm, spreading laterally on gut. Flexion-juvenile: increasing on head, body, and tail, especially on peritoneum and dorsal and anal fin margins. Sequence of fin development: dorsal and anal and pelvics, pectorals, caudal. | ||||
Meristic characters
| max | min | mod | Ref. | |
| Total number of vertebrae | 58 | 55 | 36413 |
| 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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