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Larvae Information Summary for
Pomatoschistus flavescens
| Main Ref: | Russell, F.S. 1976 | |||
Yolk-sac larvae
| max | min | mod | Ref. | |
| Length at birth (mm) | 2.6 | 2.2 | 2.4 | |
| Preanal L. % TL | 49.7 | 59 |
| Place of development | planktonic | |||
| Larval area | eastern Atlantic | |||
| Yolk-sac | ovoid pigmented | Ref: | 59 | |
| Yolk | unsegmented | Oil globules | more than one oil globule | |
| Rows on tail | ventral row | |||
| Other melanophores on tail | one dorso-ventral cluster or band | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| One or two dorsal postanal melanophores. | ||||
Post larvae
| Striking feature | none | |||
| Striking shape lateral | normal (not striking) | dorsal | normal (not striking) | |
| Striking feature | none | |||
| Shape of gut | elongated | |||
| Gas bladder early | pigmented | late | pigmented | |
| Spinal armature early | no spines | late | no spines | |
| Pigmentation early | ||||
| Rows on tail | ventral row | |||
| Other melanophores on tail | no other melanophores | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Rows on tail | ventral + lateral row | |||
| Other melanophores on tail | tail with single melanophore | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Peritoneum | covered with melanophores | |||
| Pectorals | normal without melanophores | |||
| Pelvics | normal (i.e. small or absent) | |||
| At 8-9 mm length a large melanophore appears in the otocystic region. Pelvics do not appear before 9 mm. Continuous row of notochordal melanophores at 10 mm. | ||||
| L 1st feeding | Ref. |
Months of presence of larvae
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| max | Jan | Feb | Mar | Apr | ||
| min | May | Jun | Jul | Aug | ||
| mod | 4 | Sep | Oct | Nov | Dec | |
| Water parameters Metric characters |
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