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Larvae Information Summary for
Acipenser oxyrinchus
| Main Ref: | Jones, P.W., F.D. Martin and J.D. Hardy Jr. 1978 | |||
Yolk-sac larvae
| max | min | mod | Ref. | |
| Length at birth (mm) | 11 | 4639 | ||
| Preanal L. % TL |
| Place of development | in close association with substrate | |||
| Larval area | Mid-Atlantic Bight | |||
| Yolk-sac | ovoid unpigmented | Ref: | ||
| Yolk | Oil globules | |||
| Melanophores on head + trunk | melanophores on head | |||
| Yolk sac is large, oval, vascular; head not deflected over yolk; mouth formed; eye relatively small; auditory vesicles round, equal to eye; branchial arches concealed by opercular folds; barbels lacking; pectoral buds present; origin of dorsal finfold in occipital region (Ref. 4639). | ||||
Post larvae
| Striking feature | ||||
| Striking shape lateral | dorsal | |||
| Striking feature | ||||
| Shape of gut | ||||
| Gas bladder early | late | |||
| Spinal armature early | late | |||
| Undescribed except that this species is toothless 'except in larval stages" (Ref. 4639). | ||||
| 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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