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Spawning Summary
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Spawning of   Bolinus brandaris
Main Ref: Elhasni, K., P. Vasconcelos, M. Ghorbel and O. Jarboui, 2013
Data Ref.: Elhasni, K., P. Vasconcelos, M. Ghorbel and O. Jarboui, 2013
Country: Tunisia
Spawning ground: coastal
Locality: Sfax (Gulf of Gabès)/2007
Season: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
5 6 7 7 6 2 1 0 0 1 2 3
Sex ratio:    %  Ref.:   
Temperature:  -   °C
Fecundity
Ref.:  
  min     (g) (cm)  
  max     (g) (cm)  
Spawning Cycles: (1/y)   Ref:  
Comment:  
Gestation period: month/s
Length of offspring: cm
Relative Fecundity: oocytes/g
Mean: oocytes/g
Min Ref.:
Max Ref.:
Mean Ref.:
Fecundity/length relationship ( F = a * L ^b):
  Size (cm)  
  n  
  a  
  b  
  r  
Batch spawners
Daily spawning frequency -
Mean:
Min Ref.:
Max Ref.:
Mean Ref.:
Comments: GSI of females read off from Ref. 114300 (p. 32, Fig. 6B) using WebPlotDigitizer. Annual spawning was from April to July with peak from May to June (Ref. 114300).
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