SPLASH page for Atrina fragilis

Reproduction

Adult Atrina fragilis embedded in sea bed.
Image: Sue Scott

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Reproductive type	Gonochoristic	Reproductive frequency	Insufficient information
Developmental mechanism	Planktotrophic	Fecundity (number of eggs)	Data deficient
Generation time	Insufficient information	Age at maturity	Insufficient information
Dispersal potential	>1000m	Larval settling time	Insufficient information
Time of first gamete	Insufficient information	Time of last gamete	Insufficient information
Life span	Insufficient information
Additional information
Atrina fragilis is assumed to be long lived due to its large size. Butler et al. (1993) report that the related Mediterranean genus Pinna nobilis may live up to 18 yr. Dispersion is assumed to be possible over large distances due to the pelagic life history. However, Butler et al. (1993) mention evidence for genetic population sub-division in Pinna bicolor within the Gulf of St Vincent in South Australia, which suggests that effective dispersal is lower than expected.