TemperateReefBase Geonetwork Catalogue
Reproductive potential of the long spined sea urchin Centrostephanus rodgersii in Tasmania
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).
Simple
Identification info
- Date (Creation)
- 2008-05-05T13:57:00
Principal investigator
School of Zoology, University of Tasmania (UTAS) - Ling, Scott (Postgraduate)
Private Bag 5
Hobart
Tasmania
7001
Australia
Principal investigator
School of Zoology, University of Tasmania (UTAS) - Johnson, Craig, Dr (PhD supervisor)
Private Bag 5
Hobart
Tasmania
7001
Australia
- Purpose
- The aim of this project was to determine the reproductive capabilities of C. rodgersii in Tasmania in terms of reproductive cycle, functional gamete production and subsequent successful larvae development.
- Credit
- Frusher, Stewart, Associate Professor
- Credit
- King, C.K.
- Credit
- Funding: School of Zoology, TAFI (University of Tasmania) Core grant (i.e. from State Govt) and grant from Tas Abalone Council; some funding from FRDC 2001/044
- Status
- Completed
Principal investigator
Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS) - Ling, Scott, Dr
IMAS - Sandy Bay
Private Bag 129
Hobart
Tasmania
7001
Australia
- Spatial representation type
- Text, table
- Temporal resolution
-
P0Y1M0DT0H0M0S
- Topic category
-
- Biota
Extent
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W
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Temporal extent
- Time period
- 2003-10-01 2005-08-23
Vertical element
- Minimum value
- 8
- Maximum value
- 15
- Identifier
- EPSG::5715
- Name
- MSL depth
- Maintenance and update frequency
- Not planned
Resource format
- Title
- Excel
- Date
- Edition
- 2003
- CAAB - Codes for Australian Aquatic Biota v2
-
- 25 211001
- Centrostephanus rodgersii
- Global Change Master Directory (GCMD) Earth Science Keywords Version 8.0
- Keywords (Discipline)
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- Temperate Reef
- Keywords (Theme)
-
- Larval development stage
- Test diameter
- Test height
- Body weight
- Gonad weight
- sex
- Gut weight
- Lantern weight
- Total weight
- Gonad index
- Gut index
- Percentage of animals induced to spawn
Resource constraints
- Classification
- Unclassified
Resource constraints
- Linkage
-
http://i.creativecommons.org/l/by/4.0/88x31.png
License Graphic
- Title
- Creative Commons Attribution 4.0 International License
- Website
-
http://creativecommons.org/licenses/by/4.0/
License Text
- Other constraints
- The citation in a list of references is: citation author name/s (year metadata published), metadata title. Citation author organisation/s. File identifier and Data accessed at (add http link).
- Language
- English
- Character encoding
- UTF8
- Supplemental Information
- Scott D. Ling, C.R. Johnson, S. Frusher and C.K. King. (2008). Reproductive potential of a marine ecosystem engineer at the edge of a newly expanded range. Global Change Biology, 14, 907-915. doi: 10.1111/j.1365-2486.2008.01543.x Paper is chapter 2 in Scott Ling's PhD Thesis (submitted 2008): CLIMATE CHANGE AND A RANGE-EXTENDING SEA URCHIN: CATASTROPHIC-SHIFTS AND RESILIENCE IN A TEMPERATE REEF ECOSYSTEM, University of Tasmania
Content Information
- Content type
- Physical measurement
- Name
- Larval development stage
- Name
- Test diameter
- Name
- test_diam
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/UXMM
- Name
- Millimetres
- Name
- Test height
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/UXMM
- Name
- Millimetres
- Name
- Body weight
- Name
- grams
- Name
- Gonad weight
- Name
- grams
- Name
- sex
- Name
- Gut weight
- Name
- grams
- Name
- Lantern weight
- Name
- grams
- Name
- Total weight
- Name
- grams
- Name
- Gonad index
- Name
- decimal
- Name
- Gut index
- Name
- decimal
- Name
- Percentage of animals induced to spawn
- Identifier
- http://vocab.nerc.ac.uk/collection/P06/current/UPCT
- Name
- Percent
Distribution Information
- OnLine resource
- DATA ACCESS - biometric data for derivation of gonad index cycles at 4 sites [direct download]
- OnLine resource
- DATA ACCESS - Centrostephanus larval development rates across different temperatures [direct download]
- OnLine resource
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imas:ZOO_SDLing_Reproductive_potential_long_spined_sea_urchin_tasmania_GV
MAP - sea urchin sampling sites
- OnLine resource
-
imas:ZOO_SDLing_Reproductive_potential_long_spined_sea_urchin_tasmania_GV
This OCG WFS service returns the data for download in subsettable CSV format.
Resource lineage
- Statement
- Study sites (eastern Tasmania): WGS84 Elephant Rock, St Helens (-41.2489, 148.3383) The Gulch, Bicheno (-41.8747, 148.3075) Mistaken Cape, Maria Island (-42.6428, 148.1547) The Lanterns, Tasman Peninsula (-43.1386, 148.0058)
- Hierarchy level
- Collection session
Resource lineage
- Statement
- See journal article for detailed methodologies [Scott D. Ling, C.R. Johnson, S. Frusher and C.K. King. (2008). Reproductive potential of a marine ecosystem engineer at the edge of a newly expanded range. Global Change Biology, 14, 907-915. doi: 10.1111/j.1365-2486.2008.01543.x], however, methods are summarised below: Reproductive cycle Mean gonad index (GI) was obtained bimonthly for 30 adult C. rodgersii from each site from Oct 2003 - June 2005. Test diameter (TD) ranged 80-110 mm. Urchins were dissected, gonads removed and sexed. Gonads, test (including spines), gut and contents, and Aristotle's lantern were weighed separately. An additional 10 urchins from each site we used to assess spawning ability. These were injected with 4ml 0.5M KCl, and those that were induced to spawn were recorded. Temperature effects on fertilization and larval development 30 urchins (TD 80-110 mm) were collected from Tasman Peninsula (-43.1365 S, 148.0035 E) near the annual GI peak (August 2005) and held in aquaria overnight at 12 C and induced to spawn using KCl. Sperm-egg cultures were arranged across a temperature-gradient block and allowed to develop. Fertilization rates were calculated from a subset of each sample as the percentage of eggs that displayed a fertilization membrane. Larval developmental stage was also assessed at set intervals, using the yield of advanced two-arm plutei for each temperature treatment as the relative contribution for each trial.
- Hierarchy level
- Dataset
Metadata
- Metadata identifier
- 9854c410-1a54-11dd-81a8-00188b4c0af8
- Language
- English
- Character encoding
- UTF8
Point of contact
Type of resource
- Resource scope
- Dataset
- Metadata linkage
-
https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/9854c410-1a54-11dd-81a8-00188b4c0af8
Point of truth URL of this metadata record
- Date info (Creation)
- 2021-03-30T21:26:50
- Date info (Revision)
- 2021-03-30T21:26:50
Metadata standard
- Title
- ISO 19115-3:2018
Overviews
Spatial extent
N
S
E
W
N
S
E
W
N
S
E
W
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E
W
Provided by
Associated resources
Not available