From Australian Oceans Data Network
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Reproductive potential of the long spined sea urchin Centrostephanus rodgersii in Tasmania

Created 13/03/2025

Updated 13/03/2025

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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).

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Title Reproductive potential of the long spined sea urchin Centrostephanus rodgersii in Tasmania
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/ee97e69d-04b9-4307-9a6f-4fd3c156fb37
Contact Point
CSIRO Oceans & Atmosphere
Scott.Ling@utas.edu.au
Reference Period 01/10/2003 - 23/08/2005
Geospatial Coverage {"type": "Polygon", "coordinates": [[[148.0, -41.5], [148.5, -41.5], [148.5, -41.0], [148.0, -41.0], [148.0, -41.5]]]}
Data Portal data.gov.au

Data Source

This dataset was originally found on data.gov.au "Reproductive potential of the long spined sea urchin Centrostephanus rodgersii in Tasmania". Please visit the source to access the original metadata of the dataset:
https://devweb.dga.links.com.au/data/dataset/reproductive-potential-of-the-long-spined-sea-urchin-centrostephanus-rodgersii-in-tasmania

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