Reproduction of Raja asterias
Document source: http://www.fishbase.de/Reproduction/FishReproSummary.php?ID=8924&GenusName=Raja&SpeciesName=asterias&fc=19&StockCode=9246
 
Main Ref. Breder, C.M. and D.E. Rosen, 1966
Mode dioecism
Fertilization internal (oviduct)
Mating type
Spawning frequency
Spawning aggregation Ref.  
Batch spawner Ref.  
Reproductive guild nonguarders
open water/substratum egg scatterers
Parental Care none
Description of life cycle and mating behavior Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Spawning peak in summer to early autumn with 30 to more than 100 egg-cases per year depending on the size of the female (Ref. 3167). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205).
Search for more references on reproduction Scirus
(e.g. 9948)
( e.g. cephalopods )
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