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Spawning of   Pterodroma ultima
Main Ref: Brooke, M. de L., 1995
Data Ref.:  
Country: Pitcairn
Spawning ground:  
Locality: Oeno and Ducie
Season: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
        111 111 111          
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: Laying period was from 28 May to 9 July 1991. Estimated breeding pairs are 1500 in Henderson, 12500 +/- 2500 in Oeno and 250000 +/- 29000 in Ducie (Ref. 5720).
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