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Larvae Information Summary for
Clupea pallasii pallasii
| Main Ref: | Matarese, A.C., A.W. Kendall, D.M. Blood and M.V. Vinter 1989 | |||
Yolk-sac larvae
| max | min | mod | Ref. | |
| Length at birth (mm) | 7.5 | 5.6 | ||
| Preanal L. % TL |
| Place of development | planktonic | |||
| Larval area | California Current region; Japan | |||
| Yolk-sac | Ref: | 265 | ||
| Yolk | segmented | Oil globules | no oil globule | |
| Rows on tail | no rows | |||
| Other melanophores on tail | no other melanophores | |||
| Melanophores on head + trunk | melanophores on trunk | |||
Post larvae
| Striking feature | duck-billed shape of head | |||
| Striking shape lateral | eel-like | dorsal | normal (not striking) | |
| Striking feature | duck-billed shape of head | |||
| Shape of gut | tube-like | |||
| Gas bladder early | late | |||
| Spinal armature early | no spines | late | no spines | |
| Pigmentation early | ||||
| Rows on tail | no rows | |||
| Other melanophores on tail | one dorso-ventral cluster or band | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Pigmentation late | ||||
| Rows on tail | dorsal + lateral 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 | with row of melanophores | |||
| Pectorals | normal without melanophores | |||
| Pelvics | normal (i.e. small or absent) without melanophores | |||
| Distinguished from Engraulis mordax by: more myomeres (usually >50); longer gut (consistently >70% SL); placement of dorsal fin relative to anus (6-7 myomeres between dorsal and anal fins); less isthmus pigment; prominent swimbladder in E. mordax; dorsal spots at notochord tip usually not in E. mordax; generally more pigmented; distinguished from Sardinops sagax by: presence of posteroventral pigment on gut; dorsal spots at notochord tip usually not in S. sagax. Pigmentation: isthmus, thoracic region; gut: dorsal, midventral (midventral melanophores on intestine usually paired, sometimes slightly offset); caudal, hypural. Sequence of fin development: caudal, dorsal, anal, pelvics, pectorals. | ||||
Meristic characters
| max | min | mod | Ref. | |
| Total number of myomeres | 56 | 50 | 53 | 35601 |
| 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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