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Larvae Information Summary for
Ammodytes tobianus
| Main Ref: | Russell, F.S. 1976 | |||
Yolk-sac larvae
| max | min | mod | Ref. | |
| Length at birth (mm) | 6 | 4 | 5 | |
| Preanal L. % TL | 60 |
| Place of development | planktonic | |||
| Larval area | to be filled | |||
| Yolk-sac | ovoid pigmented | Ref: | 66 | |
| Yolk | unsegmented | Oil globules | one oil globulecentralcentralunpigmented | |
| Rows on tail | dorsal row | |||
| Other melanophores on tail | tail with single melanophore | |||
| Melanophores on head + trunk | melanophores on trunk | |||
| Anus does not reach the edge of the primordial fin. | ||||
Post larvae
| Striking feature | none | |||
| Striking shape lateral | eel-like | dorsal | normal (not striking) | |
| Striking feature | none | |||
| Shape of gut | tube-like | |||
| Gas bladder early | invisible | late | invisible | |
| Spinal armature early | no spines | late | no spines | |
| Pigmentation early | ||||
| Rows on tail | ventral row | |||
| Other melanophores on tail | tail with single melanophore | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Pigmentation late | ||||
| Rows on tail | dorsal + ventral row | |||
| Other melanophores on tail | tail with single melanophore | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Urostyle region early | pigmented | late | unpigmented | |
| Peritoneum | with row of melanophores | |||
| Pectorals | normal without melanophores | |||
| Pelvics | normal (i.e. small or absent) | |||
| Absence of ventral gut melanophores, weak development of caudal pigmentation, and extension of dorsal body melanophore row to the level of the anus. | ||||
Meristic characters
| max | min | mod | Ref. | |
| Total number of vertebrae | 68 | 60 | 64 | 37 |
| L 1st feeding | Ref. | Months of presence of larvae | ||||
| max | 12 | Jan | Feb | Mar | Apr | |
| min | 11 | May | Jun | Jul | Aug | |
| mod | 11 | Sep | Oct | Nov | Dec | |
| Water parameters Metric characters |
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