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Larvae Information Summary for
Echiodon drummondii
| Main Ref: | Russell, F.S. 1976 | |||
Yolk-sac larvae
| max | min | mod | Ref. | |
| Length at birth (mm) | 4.7 | 4.5 | 4.6 | |
| Preanal L. % TL | 33.3 | 23.1 | 31.5 |
| Place of development | planktonic | |||
| Larval area | Northeastern Atlantic | |||
| Yolk-sac | ovoid pigmented | Ref: | ||
| Yolk | unsegmented | Oil globules | one oil globuleposteriorcentralunpigmented | |
| Rows on tail | no rows | |||
| Other melanophores on tail | tail with single melanophore | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| There is a small appendage on the dorsal trunk. Anus close behind the posterior end of the yolksac. Color of the oil globule amber or golden. | ||||
Post larvae
| Striking feature | some dorsal fin rays very elongated | |||
| Striking shape lateral | eel-like | dorsal | normal (not striking) | |
| Striking feature | some dorsal fin rays very elongated | |||
| Shape of gut | spherical or gut loop | |||
| 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 | more than two dorso-ventral clusters or bands | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Rows on tail | no rows | |||
| Other melanophores on tail | tail with single melanophore | |||
| Urostyle region early | pigmented | late | unpigmented | |
| Peritoneum | covered with melanophores | |||
| Pectorals | absent | |||
| Pelvics | normal (i.e. small or absent) | |||
| The dorsal appendage is very characteristic (but may be lost). 3 - 5 large melanophores along the ventral contour of the tail. The longest larvae found was 93 mm. | ||||
| L 1st feeding | Ref. | Months of presence of larvae | ||||
| max | Jan | Feb | Mar | Apr | ||
| min | May | Jun | Jul | Aug | ||
| mod | 6 | Sep | Oct | Nov | Dec | |
| Water parameters Metric characters |
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