Reproduction of Heterodontus japonicus
Document source: http://fishbase.mnhn.fr/Reproduction/FishReproSummary.php?ID=741&GenusName=Heterodontus&SpeciesName=japonicus&fc=3&StockCode=757
 
Main Ref. Compagno, L.J.V., 1984
Mode dioecism
Fertilization internal (oviduct)
Mating type
Spawning frequency one clear seasonal peak per year
Spawning aggregation Ref.  
Batch spawner Yes.   Ref.  Compagno, L.J.V., 1984
Reproductive guild nonguarders
open water/substratum egg scatterers
Parental Care none
Description of life cycle and mating behavior Oviparous. Eggs are laid in rocks or in kelp at depths of about 8 or 9 m and are present from March through September. Eggs are more abundant, however, in March and April. Eggs are hatched in about a year; size at hatching is about 18 cm. There may be a `nest' for several females laying eggs but this is not a true nest. A female lays two eggs at a time, for 6 to 12 spawnings.
Search for more references on reproduction Scirus
(e.g. 9948)
( e.g. cephalopods )
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