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Larvae Information Summary for
Micropogonias undulatus
| Main Ref: | Scotton, L.N., R.E. Smith, N.S. Smith, K.S. Price and D.P. de Sylva 1973 | |||
Yolk-sac larvae
| max | min | mod | Ref. | |
| Length at birth (mm) | ||||
| Preanal L. % TL |
| Place of development | planktonic | |||
| Larval area | Delaware Bay | |||
| Yolk-sac | Ref: | |||
| Yolk | Oil globules | |||
| Rows on tail | ||||
| Other melanophores on tail | ||||
Post larvae
| Striking feature | none | |||
| Striking shape lateral | normal (not striking) | dorsal | ||
| Striking feature | none | |||
| Shape of gut | triangular | |||
| Gas bladder early | late | |||
| Spinal armature early | opercular spines only | late | ||
| Pigmentation early | ||||
| Rows on tail | ventral row | |||
| Other melanophores on tail | no other melanophores | |||
| Melanophores on head + trunk | no melanophores on head or trunk | |||
| Pigmentation late | ||||
| Rows on tail | ventral row | |||
| Other melanophores on tail | no other melanophores | |||
| Melanophores on head + trunk | no melanophores on head or trunk | |||
| Urostyle region early | unpigmented | late | unpigmented | |
| Peritoneum | covered with melanophores | |||
| Pectorals | normal without melanophores | |||
| Pelvics | normal (i.e. small or absent) without melanophores | |||
| At 2.8 mm, mouth large and nearly vertical; dark crescent-shaped peritoneum above visceral mass. At 3.6 mm, rudimentary rays of caudal fin point ventrally from slightly upturned notochord. At 4.0 mm, caudal rays more horizontal. At 6.0 mm, anal fin rays differentiated, usually being II,8; soft dorsal rays somewhat differentiated; distinctive pigmentation consists of 2 small chromatophores at base of anal fin; 3 to 5 chromatophores lie posterior to anal fin along caudal peduncle. At 11 mm, full complement of dorsal and anal rays present, caudal fin asymmetrical and somewhat pointed, thus separating this species from Leiostomus xanthurus. | ||||
| L 1st feeding | Ref. |
Months of presence of larvae
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| max | Jan | Feb | Mar | Apr | ||
| min | May | Jun | Jul | Aug | ||
| mod | Sep | Oct | Nov | Dec | ||
| Water parameters Metric characters |
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