Main Ref: | Utrilla, C.G. and J. Lobón-Cerviá, 1999 | |||||||||||
Data Ref.: | Utrilla, C.G. and J. Lobón-Cerviá, 1999 | |||||||||||
Country: | Spain | |||||||||||
Spawning ground: | riverine | |||||||||||
Locality: | Esva River (43°33'N, 6°32'E), 1992-1994 | |||||||||||
Season: |
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
111 | ||||||||||||
Sex ratio: | 50 % Ref.: Utrilla, C.G. and J. Lobón-Cerviá, 1999 | |||||||||||
Temperature: | - °C | |||||||||||
Gestation period: | month/s | |||||||||||
Length of offspring: | cm | |||||||||||
Batch spawners | ||||||||||||
Daily spawning frequency |
- Mean: |
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Min Ref.: Max Ref.: Mean Ref.: |
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Comments: | It was noted that 2 months after spawning (by March) most of the male population in the two tributaries (86% La Viella, 62% Ma´llene) still showed ripe gonads (Ref. 36293). |