IMAS Metadata Catalogue
Utilisation of the introduced New Zealand screwshell (Maoricolpus roseus) by native hermit crabs in eastern Tasmania - spatial variability in occupancy
Interactions between native and introduced species can help to elucidate the impact of exotic species on the broader community. This work examines utilisation of an introduced gastropod, the New Zealand screwshell (Maoricolpus roseus) by native hermit crabs in eastern Tasmania.
Samples of screwshells were collected from Bass Strait, Maria Island, Pirates Bay and Dennes Point using a modified scallop dredge or collected by divers. Site location, date, depth, dredge opening size were recorded, and random sub-samples of shells were measured for length and width, and spire damage was scored. Hermit crabs, if present, were identified to species, sexed and measured.
Simple
Identification info
- Date (Creation)
- 2008-05-27T13:04:00
Principal investigator
School of Zoology, University of Tasmania (UTAS) - Reid, Anthony
Private Bag 5
Hobart
Tasmania
7001
Australia
- Purpose
- To examine the association between Maoricolpus roseus and hermit crabs - and thereby identify potential impacts of this introduced screwshell on native populations of hermit crabs in eastern Tasmania - specifically looking at spatial variation in occupancy and utilisation of M. roseus shells by hermit crabs examined over large spatial scales.
- Credit
- School of Zoology, University of Tasmania
- Credit
- Natural Heritage Trust (NHT) Grant
- Status
- Completed
Principal investigator
Point of contact
Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS) - Johnson, Craig, Prof. (Honours supervisor)
IMAS - Sandy Bay
Private Bag 129
Hobart
Tasmania
7001
Australia
- Spatial representation type
- Text, table
- Topic category
-
- Biota
Extent
N
S
E
W
))
Temporal extent
- Time period
- 2003 2003
Vertical element
- Minimum value
- 10
- Maximum value
- 40
- Maintenance and update frequency
- Not planned
Resource format
- Title
- Excel
- Date
- Edition
- 2003
- Global Change Master Directory Earth Science keywords v.5.3.8
-
- Biosphere | Zoology | Crustaceans
- Biosphere | Zoology | Mollusks
- CAAB - Codes for Australian Aquatic Biota v2
-
- 24 079001
- Maoricolpus roseus
- Australian and New Zealand Standard Research Classification (ANZSRC): Fields of Research
- Keywords (Theme)
-
- Shell length
- Shell width
- Shell weight
- Hermit crab occupancy
Resource constraints
- Classification
- Unclassified
Resource constraints
- Use limitation
- The data described in this record are the intellectual property of A. Reid.
Resource constraints
- Linkage
-
http://i.creativecommons.org/l/by/2.5/au/88x31.png
License Graphic
- Title
- Creative Commons Attribution 2.5 Australia License
- Website
-
http://creativecommons.org/licenses/by/2.5/au/
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).
- Other constraints
- This data is yet to be published, please contact the researcher for access to the data.
Associated resource
- Title
- Utilisation of the introduced New Zealand screwshell Maoricolpus roseus by native hermit crabs in eastern Tasmania
- Date (Creation)
- 2008-06-23T16:36:00
- Language
- English
- Character encoding
- UTF8
- Supplemental Information
- Part of honours thesis work: Reid, A.P. 2003. Utilisation of the introduced New Zealand screwshell (Maoricolpus roseus) by native hermit crabs in eastern Tasmania: Indications of potential impact. University of Tasmania, Honours Thesis.
Content Information
- Content type
- Physical measurement
- Name
-
Shell length
- Name
-
Shell width
- Name
-
Shell weight
- Name
-
Hermit crab occupancy
Distribution Information
- Distribution format
-
-
Excel
-
Excel
Distributor
Resource lineage
- Statement
- Maoricolpus roseus were collected from 5 sites in eastern Tasmania: Bass Strait - 3 samples: 39°12.500 S 148°31.280 E (37m) 39°47.110 S 148°23.620 E (37m) 39°45.260 S 148°24.590 E (37m) Maria Island 42°39.076 S 147°59.757 E (18m) Pirates Bay 43°02.118 S 147°56.550 E (6m) Dennes Point 43°03.618 S 147°19.703 E (10-40m) Huon Island 43°16.350 S 147°07.860 E (10m)
- Hierarchy level
- Dataset
Resource lineage
- Statement
- Maoricolpus roseus were collected using a modified scallop dredge towed at an average speed of 1 knot for a period of 5 minutes: Bass Strait - using a dredge with an opening 4260mm x 1510mm and a depth of 390mm, with mesh size = 23 x 35 mm. Dennes Point and Huon Island - dredge opening of 630mm x 350mm and a depth of 320mm. Maria Island and Pirates Bay were randomly sampled by divers until approximately 300 shells had been collected.
- Hierarchy level
- Collection session
Resource lineage
- Statement
- A sub-sample of approx 300 Maoricolpus roseus shells were used from each site. Shell length and width were measured to the nearest 0.1 mm using Vernier callipers (shell length = longest distance of the shell from apex to anterior and width = widest part, below aperture). Shell weight was measured to the nearest 0.01g after drying at 110°C for 24 hours. Spire damage was given a relative score of 0-3. Shells were also scored as live, dead and available or dead and unavailable. Shells were broken, and if hermit crabs were present, they were identified to species, sexed and carapace measured with Vernier callipers to the nearest 0.1mm.
- Hierarchy level
- Dataset
Metadata
- Metadata identifier
-
a53781b0-2b96-11dd-a343-00188b4c0af8
- 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/a53781b0-2b96-11dd-a343-00188b4c0af8
Point of truth URL of this metadata record
- Date info (Creation)
- 2021-03-30T00:11:47
- Date info (Revision)
- 2021-03-30T00:11:47
Metadata standard
- Title
- ISO 19115-3:2018
Overviews
Spatial extent
N
S
E
W
Provided by
Associated resources
Not available