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Larvae Information Summary for
Hippocampus guttulatus
| 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) | 11.8 | 52034 | ||
| Preanal L. % TL |
| Place of development | in close association with substrate | |||
| Larval area | algae and eel grass beds | |||
| Yolk-sac | Ref: | |||
| Yolk | Oil globules | |||
| Rows on tail | ||||
| Other melanophores on tail | ||||
Post larvae
| Striking feature | tube-like snout | |||
| Striking shape lateral | other | dorsal | ||
| Striking feature | tube-like snout | |||
| Shape of gut | tube-like | |||
| Gas bladder early | late | |||
| Spinal armature early | several different spines | late | several different spines | |
| Pigmentation early | ||||
| Rows on tail | no rows | |||
| Other melanophores on tail | more than two dorso-ventral clusters or bands | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Pigmentation late | ||||
| Rows on tail | no rows | |||
| Other melanophores on tail | more than two dorso-ventral clusters or bands | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Urostyle region early | pigmented | late | pigmented | |
| Peritoneum | covered with melanophores | |||
| Pectorals | normal | |||
| Pelvics | normal (i.e. small or absent) | |||
| Snout distinctly longer than in H. brevirostris. Bony crests and rings evident with marked reliefs. 18-21 dorsal rays, extending over 3 segments, 4 anal and 14-18 pectoral rays, no caudal, no primordial fin. | ||||
Meristic characters
| max | min | mod | Ref. | |
| Total number of myomeres | 49 | 48 | 48 | |
| Preanal number of myomeres | 11 |
| L 1st feeding | Ref. | Months of presence of larvae | ||||
| max | Jan | Feb | Mar | Apr | ||
| min | May | Jun | Jul | Aug | ||
| mod | 15 | Sep | Oct | Nov | Dec | |
| Water parameters Metric characters |
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