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Larvae Information Summary for
Zu cristatus
| Main Ref: | Bertolini, F., U. D'Ancona, E. Padoa Montalenti, S. Ranzi, L. Sanzo, A. Sparta, E. Tortonese and M. Vialli 1956 | |||
Yolk-sac larvae
| max | min | mod | Ref. | |
| Length at birth (mm) | 6.5 | |||
| Preanal L. % TL | 55.2 |
| Place of development | planktonic | |||
| Larval area | to be filled | |||
| Yolk-sac | pigmented | Ref: | ||
| Yolk | unsegmented | Oil globules | no oil globule | |
| Rows on tail | no rows | |||
| Other melanophores on tail | tail with single melanophore | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| First ray of anterior dorsal fin exceeds the total body length with 5 black swellings. 1st ventral ray very long. 4 dorsal and 4 ventral spots. | ||||
Post larvae
| Striking feature | ||||
| Striking shape lateral | other | dorsal | compressed | |
| Striking feature | ||||
| Shape of gut | elongated | |||
| Gas bladder early | pigmented | late | pigmented | |
| Spinal armature early | no spines | late | no spines | |
| Pigmentation early | ||||
| Rows on tail | no rows | |||
| Other melanophores on tail | tail with single melanophore | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Pigmentation late | ||||
| Rows on tail | no rows | |||
| Other melanophores on tail | more than two dorso-ventral clusters or bands | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Urostyle region early | pigmented | late | pigmented | |
| Peritoneum | covered with melanophores | |||
| Pectorals | normal | |||
| Pelvics | with elongated fin rays with melanophores | |||
| Tail thin in more advanced larval stages and in strong contrast with height of anterior part of body. | ||||
Meristic characters
| max | min | mod | Ref. | |
| Total number of myomeres | 60 | |||
| Preanal number of myomeres | 21 | 20 | 20 |
| 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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