Main Ref: | Compagno, L.J.V., 1984 | |||||||||||
Data Ref.: | ||||||||||||
Country: | ||||||||||||
Spawning ground: | ||||||||||||
Locality: | North Atlantic, eastern South Pacific, eastern South Atlantic coast of South America, Cape coast of South Africa, , temperate south coast of Australia, temperate southern New Zealand, North Pacific | |||||||||||
Season: |
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
Sex ratio: | % Ref.: | |||||||||||
Temperature: | 7 - 15 °C | |||||||||||
Gestation period: | 18 - 24 month/s | |||||||||||
Ref.:
Cox, G. and M. Francis, 1997
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Length of offspring: | 18 - 33 cm | |||||||||||
Batch spawners | ||||||||||||
Daily spawning frequency |
- Mean: |
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Min Ref.: Max Ref.: Mean Ref.: |
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Comments: | Ovoviviparous; birth in the dogfish may occur primarily during the cold months of the year, with considerable variation and with some young produced in spring and summer; young are delivered head first with a series of rhythmic contractions reminiscent of birth in mammals; size of young at birth 22 to 33 cm. |