Reproduction of Heterodontus portusjacksoni
Document source:
Main Ref. Breder, C.M. and D.E. Rosen, 1966
Mode dioecism
Fertilization internal (oviduct)
Mating type monogamy:
Spawning frequency one clear seasonal peak per year
Spawning aggregation Ref.  
Batch spawner Yes.   Ref.  
Reproductive guild nonguarders
open water/substratum egg scatterers
Parental Care none
Description of life cycle and mating behavior Oviparous. Distinct pairing with embrace (Ref. 205). Undergoes yearly migrations to breeding sites. Females lay about 10 to 16 (commonly 10-12) eggs in rock crevices on shallow sheltered reefs at depths of 1-5 m (rarely 20-30 m) during August and September (rarely in July and October). In captivity, females lay 2 eggs a day every 8-17 days. Eggs are hatched after 9-12 months and young then move into nursery areas in bays and estuaries. After the breeding season, males move into deeper waters followed by the females in late September or October.
Search for more references on reproduction Scirus
(e.g. 9948)
( e.g. cephalopods )
Entered by Luna, Susan M. on 02.04.94
Modified by Luna, Susan M. on 07.19.17
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