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Larvae Information Summary for
Bolinichthys longipes
| Main Ref: | Moser, H.G. and E.H. Ahlstrom 1996 | |||
Yolk-sac larvae
| max | min | mod | Ref. | |
| Length at birth (mm) | 3 | |||
| Preanal L. % TL | 62 | 53 |
| 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 | 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 | |
| Peritoneum | without melanophores | |||
| Pectorals | normal without melanophores | |||
| Pelvics | fin rays only without melanophores | |||
| Moderately slender body; head and jaw size moderate; eyes large and nearly round; snout blunt; gut to midbody with slight sigmoid curvature; pigment sparse but diagnostic (see Ceratoscopelus townsendi; Br2 photophores form at about 5.0 mm; Br1, Op1, and PO5 form during transformation; larvae somewhat similar to those of C. townsendi but are stouter, have a larger, more round eye, have embedded pigment in the otic region (lacking in C. townsendi larvae <10.5 mm), and lack early developing photophores present in C. townsendi larvae. Pigmentation: Preflexion: 3-9 (usually 4-6) in median ventral series extending posteriad from above preanal arch of gut; 1 above gas bladder by 4.0 mm; 1 embedded in otic region in larvae as small as 4.4 mm. Flexion: by 5.0 mm, postanal series coalesces to 1, occasionally 2, in caudal peduncle region in larvae as small as 5.3 mm. Postflexion: all larvae >7.0 mm have series above spinal column, 1-9 (usually 2-3), 1 or 2 in dorsal midline posterior to cerebellum at about 8.0 mm. Sequence of fin development: caudal, dorsal and anal and pectorals, pelvics. | ||||
Meristic characters
| max | min | mod | Ref. | |
| Total number of vertebrae | 35 | 32 | 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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