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Larvae Information Summary for
Diogenichthys laternatus
| Main Ref: | Moser, H.G. and E.H. Ahlstrom 1996 | |||
Yolk-sac larvae
| max | min | mod | Ref. | |
| Length at birth (mm) | 2.9 | |||
| Preanal L. % TL | 58 | 50 |
| 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 | light organs | |||
| Striking shape lateral | normal (not striking) | dorsal | ||
| Striking feature | light organs | |||
| Shape of gut | elongated | |||
| Gas bladder early | late | |||
| Spinal armature early | no spines | late | no spines | |
| Pigmentation early | ||||
| Rows on tail | dorsal + ventral + lateral row | |||
| Other melanophores on tail | no other melanophores | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Pigmentation late | ||||
| Rows on tail | dorsal + ventral + lateral row | |||
| Other melanophores on tail | tail with single melanophore | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Urostyle region early | unpigmented | late | unpigmented | |
| Peritoneum | with row of melanophores | |||
| Pectorals | normal melanophores at fin base | |||
| Pelvics | fin rays only without melanophores | |||
| Morphology similar to D. atlanticus; lacks barbel but has pigment at tip of lower jaw; lacks large melanophore on trunk above preanal arch of gut that is present in D. atlanticus; Br2 photophores form at about 4.5 mm; PO5 the only other pair to develop in larvae. Pigmentation: Preflexion: by about 3.0 mm, ventrolateral pair just posterior to cleithrum, dorsolateral pair on terminus of gut, 2 pairs on lateral midgut, and 3-5 in postanal median ventral series; at about 4.5 mm, on anterior margin of lower jaw. Flexion: 5-9 in postanal series, becoming embedded. Postflexion: by about 7.0 mm, 10-12 in postanal series, 1 (large) on anterior region on pectoral fin base, pair on isthmus on each side of urohyal region, ventrolateral and dorsolateral pairs on hindbrain, 1 (large) at base of lower caudal fin rays, and beginning of paired series on each side of anal fin base; in larvae >7.7 mm, 1 or 2 more laterally on gut (some specimens); 11-12 in postanal series. Sequence of fin development: caudal, pectorals, anal, dorsal and pelvics. | ||||
Meristic characters
| max | min | mod | Ref. | |
| Total number of vertebrae | 32 | 29 | 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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