Data

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

University of Tasmania, Australia
Ling, Scott ; Johnson, Craig, Dr
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/9854c410-1a54-11dd-81a8-00188b4c0af8&rft.title=Reproductive potential of the long spined sea urchin Centrostephanus rodgersii in Tasmania&rft.identifier=https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/9854c410-1a54-11dd-81a8-00188b4c0af8&rft.description=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).Maintenance and Update Frequency: notPlannedStatement: 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)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.&rft.creator=Ling, Scott &rft.creator=Johnson, Craig, Dr &rft.date=2008&rft.coverage=westlimit=148.00; southlimit=-41.50; eastlimit=148.50; northlimit=-41.00&rft.coverage=westlimit=148.00; southlimit=-41.50; eastlimit=148.50; northlimit=-41.00&rft.coverage=westlimit=148.00; southlimit=-42.00; eastlimit=148.50; northlimit=-41.50&rft.coverage=westlimit=148.00; southlimit=-42.00; eastlimit=148.50; northlimit=-41.50&rft.coverage=westlimit=148.00; southlimit=-43.00; eastlimit=148.50; northlimit=-42.50&rft.coverage=westlimit=148.00; southlimit=-43.00; eastlimit=148.50; northlimit=-42.50&rft.coverage=westlimit=148.00; southlimit=-43.50; eastlimit=148.50; northlimit=-43.00&rft.coverage=westlimit=148.00; southlimit=-43.50; eastlimit=148.50; northlimit=-43.00&rft.coverage=uplimit=15; downlimit=8&rft.coverage=uplimit=15; downlimit=8&rft_rights= http://creativecommons.org/licenses/by/4.0/&rft_rights=http://i.creativecommons.org/l/by/4.0/88x31.png&rft_rights=WWW:LINK-1.0-http--related&rft_rights=License Graphic&rft_rights=Creative Commons Attribution 4.0 International License&rft_rights=http://creativecommons.org/international/&rft_rights=WWW:LINK-1.0-http--related&rft_rights=WWW:LINK-1.0-http--related&rft_rights=License Text&rft_rights=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).&rft_rights=Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0&rft_subject=biota&rft_subject=25 211001&rft_subject=Centrostephanus rodgersii&rft_subject=SEA URCHINS&rft_subject=EARTH SCIENCE&rft_subject=BIOLOGICAL CLASSIFICATION&rft_subject=ANIMALS/INVERTEBRATES&rft_subject=ECHINODERMS&rft_subject=WATER TEMPERATURE&rft_subject=REEF HABITAT&rft_subject=BIOSPHERE&rft_subject=AQUATIC ECOSYSTEMS&rft_subject=FISH&rft_subject=ANIMALS/VERTEBRATES&rft_subject=Temperate Reef&rft_subject=Marine and Estuarine Ecology (incl. Marine Ichthyology)&rft_subject=BIOLOGICAL SCIENCES&rft_subject=ECOLOGY&rft_subject=Ecological Impacts of Climate Change&rft_subject=ENVIRONMENTAL SCIENCES&rft_subject=ECOLOGICAL APPLICATIONS&rft_subject=Larval development stage&rft_subject=Test diameter&rft_subject=Test height&rft_subject=Body weight&rft_subject=Gonad weight&rft_subject=sex&rft_subject=Gut weight&rft_subject=Lantern weight&rft_subject=Total weight&rft_subject=Gonad index&rft_subject=Gut index&rft_subject=Percentage of animals induced to spawn&rft.type=dataset&rft.language=English Access the data
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Brief description

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).

Lineage

Maintenance and Update Frequency: notPlanned
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)
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.

Notes

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
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.

Created: 05 05 2008

Data time period: 2003-10-01 to 2005-08-23

This dataset is part of a larger collection

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148.5,-41 148.5,-41.5 148,-41.5 148,-41 148.5,-41

148.25,-41.25

148.5,-41.5 148.5,-42 148,-42 148,-41.5 148.5,-41.5

148.25,-41.75

148.5,-42.5 148.5,-43 148,-43 148,-42.5 148.5,-42.5

148.25,-42.75

148.5,-43 148.5,-43.5 148,-43.5 148,-43 148.5,-43

148.25,-43.25

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text: westlimit=148.00; southlimit=-42.00; eastlimit=148.50; northlimit=-41.50

text: westlimit=148.00; southlimit=-43.00; eastlimit=148.50; northlimit=-42.50

text: westlimit=148.00; southlimit=-43.50; eastlimit=148.50; northlimit=-43.00

text: uplimit=15; downlimit=8

Subjects
25 211001 | ANIMALS/INVERTEBRATES | ANIMALS/VERTEBRATES | AQUATIC ECOSYSTEMS | BIOLOGICAL CLASSIFICATION | Biological Sciences | BIOSPHERE | Body weight | Centrostephanus rodgersii | EARTH SCIENCE | ECHINODERMS | Ecological Applications | Ecology | Environmental Sciences | Ecological Impacts of Climate Change | FISH | Gonad index | Gonad weight | Gut index | Gut weight | Lantern weight | Larval development stage | Marine and Estuarine Ecology (Incl. Marine Ichthyology) | Percentage of animals induced to spawn | REEF HABITAT | SEA URCHINS | Temperate Reef | Test diameter | Test height | Total weight | WATER TEMPERATURE | biota | sex |

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Other Information
(DATA ACCESS - biometric data for derivation of gonad index cycles at 4 sites [direct download])

uri : https://data.imas.utas.edu.au/attachments/9854c410-1a54-11dd-81a8-00188b4c0af8/bodyindex.xls

(DATA ACCESS - Centrostephanus larval development rates across different temperatures [direct download])

uri : https://data.imas.utas.edu.au/attachments/9854c410-1a54-11dd-81a8-00188b4c0af8/Centrostephanus_larval_development_rates.xls

(DATA ACCESS - Bimonthly sampling of spawning induction at 5 sites [direct download])

uri : https://data.imas.utas.edu.au/attachments/9854c410-1a54-11dd-81a8-00188b4c0af8/spawn_induction.xlsx

(ASSOCIATED PUBLICATION - Reproductive potential of a marine ecosystem engineer at the edge of a newly expanded range (DOI:10.1111/j.1365-2486.2008.01543.x))

doi : http://dx.doi.org/10.1111/j.1365-2486.2008.01543.x

Identifiers
  • global : 9854c410-1a54-11dd-81a8-00188b4c0af8
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