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Larvae Information Summary for
Syngnathus typhle
| Main Ref: | Bertolini, F., U. D'Ancona, E. Padoa Montalenti, S. Ranzi, L. Sanzo, A. Sparta, E. Tortonese and M. Vialli 1956 | |||
Yolk-sac larvae
| max | min | mod | Ref. | |
| Length at birth (mm) | 25 | 20 | 23 | |
| Preanal L. % TL |
| Place of development | attached to parental body | |||
| Larval area | to be filled | |||
| Yolk-sac | Ref: | |||
| Yolk | Oil globules | more than one oil globule | ||
| Rows on tail | ||||
| Other melanophores on tail | ||||
Post larvae
| Striking feature | tube-like snout | |||
| Striking shape lateral | eel-like | dorsal | ||
| Striking feature | tube-like snout | |||
| Shape of gut | elongated | |||
| Gas bladder early | invisible | late | invisible | |
| Spinal armature early | no spines | late | no spines | |
| Pigmentation early | ||||
| Rows on tail | no rows | |||
| Other melanophores on tail | tail completely covered with melanophores | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Pigmentation late | ||||
| Rows on tail | no rows | |||
| Other melanophores on tail | tail completely covered with melanophores | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Urostyle region early | pigmented | late | pigmented | |
| Peritoneum | covered with melanophores | |||
| Pectorals | normal with few scattered melanophores | |||
| Pelvics | normal (i.e. small or absent) | |||
| Snout slightly elongate, body and head covered with brownish chromatophores. Dorsal fin 34-38 rays with some chromatophores along them, the small anal 3 rays, caudal 10 rays and strongly pigmented, pectorals 13-17 rays. | ||||
| L 1st feeding | Ref. | Months of presence of larvae | ||||
| max | Jan | Feb | Mar | Apr | ||
| min | May | Jun | Jul | Aug | ||
| mod | 26 | Sep | Oct | Nov | Dec | |
| Water parameters Metric characters |
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