BIOTIC Species Information for Astropecten irregularis
Researched byMorvan Barnes & Sean Lindsley-Leake Data supplied byMarLIN
Refereed byThis information is not refereed
Reproduction/Life History
Reproductive typeGonochoristic
Developmental mechanismLecithotrophic
Reproductive SeasonMay to June Reproductive LocationWater column
Reproductive frequencyAnnual episodic Regeneration potential Yes
Life span3-5 years Age at reproductive maturity2-3 years
Generation timeInsufficient information FecundityInsufficient information
Egg/propagule size100-200 µm Fertilization typeExternal
Larval/Juvenile dispersal potential>10km Larval settlement periodInsufficient information
Duration of larval stage11-30 days   
Reproduction Preferences Additional InformationThere is a great deal of variation within the genus for larval duration and egg size. Larger egg size corresponds with shorter larval period. There is also variation in the developmental mechanism with Grant & Tyler (1986) describing planktotrophic binnaria larvae for Astropecten irregularis and McEdward & Janies (1993) describing lecithotrophic larvae.
Reproduction References McEdward & Janies, 1993, Freeman et al, 2001, McEdward & Morgan, 2001, Newth, 1925, Henry et al, 1991, Obrebski, 1979, Grant & Tyler, 1986, Tillin et al., 2006,
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