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Larvae Information Summary for
Ammodytes marinus
| Main Ref: | Russell, F.S. 1976 | |||
Yolk-sac larvae
| max | min | mod | Ref. | |
| Length at birth (mm) | 6.6 | 5 | 5.8 | |
| Preanal L. % TL | 62 |
| Place of development | planktonic | |||
| Larval area | to be filled | |||
| Yolk-sac | Ref: | 37 | ||
| Yolk | unsegmented | Oil globules | one oil globule | |
| Rows on tail | ventral row | |||
| Other melanophores on tail | no other melanophores | |||
| Melanophores on head + trunk | melanophores on trunk | |||
| Postanal ventral body row of melanophores extending from anus to end of notochord; dorsal gut row of melanophores; abdominal melanophores. | ||||
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 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 | pigmented | |
| Peritoneum | with row of melanophores | |||
| Pectorals | normal without melanophores | |||
| Pelvics | normal (i.e. small or absent) | |||
| By the growing of the postlarva appears a caudal vertical row of melanophores (14mm). One or two dorsal body melanophores appear in the caudal region (7mm), which will extend as far as the level of the anus (20mm). | ||||
Meristic characters
| max | min | mod | Ref. | |
| Total number of vertebrae | 75 | 65 | 70 | 37 |
| L 1st feeding | Ref. |
Months of presence of larvae
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| max | Jan | Feb | Mar | Apr | ||
| min | May | Jun | Jul | Aug | ||
| mod | 7.5 | Sep | Oct | Nov | Dec | |
| Water parameters Metric characters |
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