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Larvae Information Summary for
Scomberesox scombroides
| Main Ref: | Bruce, B.D. and C.A. Sutton 1998 | |||
Yolk-sac larvae
| max | min | mod | Ref. | |
| Length at birth (mm) | 6.6 | 6.4 | ||
| Preanal L. % TL | 71 | 65 |
| Place of development | ||||
| Larval area | Eastern Tasmania | |||
| Yolk-sac | Ref: | |||
| Yolk | Oil globules | |||
| Rows on tail | ||||
| Other melanophores on tail | ||||
Post larvae
| Striking feature | lower jaw strongly projecting | |||
| Striking shape lateral | short and/or deep | dorsal | compressed | |
| Striking feature | lower jaw strongly projecting | |||
| Shape of gut | ||||
| Gas bladder early | late | |||
| Spinal armature early | late | |||
| Pigmentation early | ||||
| Rows on tail | dorsal row | |||
| Other melanophores on tail | tail partly covered with melanophores | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Pigmentation late | ||||
| Rows on tail | dorsal row | |||
| Other melanophores on tail | tail partly covered with melanophores | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Urostyle region early | pigmented | late | pigmented | |
| Peritoneum | covered with melanophores | |||
| Pectorals | fin rays only | |||
| Pelvics | fin rays only | |||
| Diagnostic characters: lower jaw slightly projected beyond upper jaw; dorsal fin directly opposite anal fin; body heavily pigmented; expanded melanophore at base of caudal-fin rays. Sequence of fin development: caudal prior to hatching; anal (<6.4-11.2 mm); dorsal (<6.4-11.2 mm); pelvic 18.5-23.1 mm); pectoral (12.0-17.8 mm). Body elongate, initially cylindrical, laterally compressed with development. Head moderate. Lower jaw robust, projecting slightly beyond upper jaw. Gut long to very long. Prominent preanal membrane extending from about midgut to anus until 22.0 mm. Scales form between 17.8 and 25.2 mm. | ||||
Meristic characters
| max | min | mod | Ref. | |
| Total number of myomeres | 68 | 64 | 33868 |
| 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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