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Larvae Information Summary for
Hippoglossus hippoglossus
| Main Ref: | Russell, F.S. 1976 | |||
Yolk-sac larvae
| max | min | mod | Ref. | |
| Length at birth (mm) | 7 | 6.5 | 6.75 | |
| Preanal L. % TL |
| Place of development | planktonic | |||
| Larval area | to be filled | |||
| Yolk-sac | elongated | Ref: | ||
| Yolk | unsegmented | Oil globules | no oil globule | |
| Rows on tail | no rows | |||
| Other melanophores on tail | no other melanophores | |||
| Melanophores on head + trunk | no melanophores on head or trunk | |||
| The newly hatched larva has a large yolk sac. | ||||
Post larvae
| Striking feature | none | |||
| Striking shape lateral | short and/or deep | dorsal | compressed | |
| Striking feature | none | |||
| 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 | dorsal + ventral row | |||
| Other melanophores on tail | tail completely covered with melanophores | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Pigmentation late | ||||
| Rows on tail | dorsal + ventral row | |||
| Other melanophores on tail | tail completely covered with melanophores | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Urostyle region early | pigmented | late | pigmented | |
| Peritoneum | without melanophores | |||
| Pectorals | normal | |||
| Pelvics | normal (i.e. small or absent) | |||
| A preanal ventral contour row of very small melanophores. One ventrolateral row running from the anus to the tail region and 3-4 faint longitudinal dorsolateral rows. Small melanophores are present near the margins of the dorsal and anal fins. | ||||
| L 1st feeding | Ref. | Months of presence of larvae | ||||
| max | Jan | Feb | Mar | Apr | ||
| min | May | Jun | Jul | Aug | ||
| mod | Sep | Oct | Nov | Dec | ||
| Water parameters Metric characters |
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