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| Main Ref: | Compagno, L.J.V., 1984 | |||||||||||
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| Locality: | Western Atlantic | |||||||||||
| Season: |
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 111 | 111 | 111 | ||||||||||
| Sex ratio: | 100 % Ref.: Compagno, L.J.V., 1984 | |||||||||||
| Temperature: | - °C | |||||||||||
| Gestation period: | 8 - 12 month/s | |||||||||||
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Ref.:
Compagno, L.J.V., 1984
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| Length of offspring: | 56 - 75 cm | |||||||||||
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Ref.:
Compagno, L.J.V., 1984 Compagno, L.J.V., 1984 Min Ref.: Compagno, L.J.V., 1984 Max Ref.: Compagno, L.J.V., 1984 |
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| Batch spawners | ||||||||||||
| Daily spawning frequency |
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Min Ref.: Max Ref.: Mean Ref.: |
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| Comments: | Viviparous with a yolk-sac placenta; 5 to 12 common number of young; litter size varies directly with size of the mother and in populations with smaller adults the litter size averages smaller; gestation period estimated as 8 to 12 months, commonly 9 months off Florida and 11 to 12 months off South Africa and in the South China Sea; females may give birth every other year at most; gravid females come in shallow bays and estuaries of the east-central USA to drop their young in summer (June to August); off Senegal in the eastern Atlantic young are born in April; females are thought to be inhibited from feeding when they give birth and shortly afterwards, and leave the pupping grounds soon after giving birth; size at birth 56 to 75 cm. | |||||||||||
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