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Larvae Information Summary for
Lampanyctus nobilis
| Main Ref: | Moser, H.G. and E.H. Ahlstrom 1996 | |||
Yolk-sac larvae
| max | min | mod | Ref. | |
| Length at birth (mm) | 3.5 | |||
| Preanal L. % TL | 64 | 43 |
| Place of development | planktonic | |||
| Larval area | California Current region; Agulhas Current Region | |||
| Yolk-sac | Ref: | |||
| Yolk | Oil globules | |||
| Rows on tail | ||||
| Other melanophores on tail | ||||
Post larvae
| Striking feature | light organs | |||
| Striking shape lateral | normal (not striking) | dorsal | ||
| Striking feature | light organs | |||
| Shape of gut | elongated | |||
| Gas bladder early | pigmented | late | pigmented | |
| 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 | no rows | |||
| Other melanophores on tail | tail with single melanophore | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Urostyle region early | unpigmented | late | unpigmented | |
| Pectorals | normal melanophores at fin base | |||
| Pelvics | fin rays only melanophores at fin base | |||
| Large head; large, nearly round eyes; large jaws with prominent teethe and tooth patch at tip of upper jaw; gut short, sigmoid; body sharply tapered in early larvae, robust in late larvae; distinctive pigment pattern with median gular series; Br2 photophores form at about 10 mm. Pigmentation: Preflexion-postflexion: 1 above and 1 anterior to forebrain; 1 above cerebellum; at lower jaw symphysis; on midline of gular region between urohyal and symphysis, usually 1 in larvae <4.0 mm, 2-4 in larger larvae; blotch above gas bladder; 1 embedded medially anterior to gut mass; beginning at about 12 mm, series on myosepta anterior to pelvic fins; in late larvae, myosepta of entire trunk outlined between pectoral and pelvic fin bases. Sequence of fin development: caudal, dorsal and anal, pectorals, pelvics. | ||||
Meristic characters
| max | min | mod | Ref. | |
| Total number of vertebrae | 39 | 37 | 31442 |
| 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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