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Jeux de données / Australian Ocean Data Network (AODN)

Reproductive potential of the long spined sea urchin Centrostephanus rodgersii in Tasmania

Température sous la surfaceAbondance et diversité de poissonsAbondance et distribution des invertébrés

Recent poleward range expansion of the barrens-forming sea urchin Centrostephanus rodgersii (Diadematidae) from mainland Australia to Tasmania, has emphasized the need to understand the population dynamics of this ecologically important species in Tasmania.

This work informs potential population dynamics of C. rodgersii in Tasmania by examination of its reproductive ecology. Reproductive periodicity (gonad index and propensity to spawn) was assessed bimonthly for 18 months at 4 sites in eastern Tasmania. Gamete viability was assessed by fertilization and early development trials. Temperature tolerance of Tasmanian C. rodgersii larvae was also assessed to determine whether this species has undergone an adaptive shift to the cooler Tasmanian environment. There was also no evidence for an adaptive shift in reproductive phenology. Reproductive phenology was assessed by determination of peak spawning period (gonad index analysis).

Données et ressources

Informations supplémentaires

Étendue temporelle2003-10-01 – 2005-08-23
Date (creation)2008-05-05
Statutcompleted
Fréquence de mise à journotPlanned
Langue des métadonnéesen
LicenceCreative Commons Attribution 4.0
Métadonnées sourcesISO 19115 XML
Dernière mise à jour2026-11-05
Créé2026-11-05
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