BIOTIC Species Information for Victorella pavida
Researched byMichelle Carter & Angus Jackson Data supplied byMarLIN
Refereed byThis information is not refereed.
Reproduction/Life History
Reproductive typeProtandrous hermaphrodite
Developmental mechanismLecithotrophic
Reproductive SeasonJune to September Reproductive Location
Reproductive frequency Regeneration potential No
Life spanSee additional information Age at reproductive maturity<1 year
Generation time<1 year FecundityCa 25 eggs per gravid zooid
Egg/propagule size Fertilization type
Larval/Juvenile dispersal potentialInsufficient information Larval settlement period
Duration of larval stage<1 day   
Reproduction Preferences Additional Information
Life span
The life span of an individual zooid has not been researched in this species. Generally, the polypides (combined lophophore and gut) of individual zooids within a bryozoan colony have the potential to undergo a cyclical degeneration and regeneration process. Polypides may last for one week up to 10 weeks (Reed, 1991). With respect to the life span of a Victorella pavida colony, new colonies emerge from dormancy during the spring and when temperatures are approximately 13°C. By November and the onset of winter, zooids begin to degenerate and eventually only the asexually produced dormant resting bodies (hibernacula) remain. The hibernacula germinate again in the spring and the cycle begins again (Carter, 2004).

Reproduction frequency
Reproduction is seasonal and eggs were observed in zooids from June to September. Following reproduction the colony will degenerate in preparation for winter dormancy (Carter, 2004).

Approximately 25 eggs can be produced per gravid zooid (Carter, 2004). Overall colony fecundity, therefore, varies with size of the colony.
Reproduction References Reed, 1991, Carter, 2004,
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