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The distribution, taxonomy, physiology and feeding habits of pelagic amphipods in Terra Nova Bay
Entry ID: K043_2006_2008_NZ_5


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Summary
Abstract: The distribution, taxonomy, physiology and feeding habits of pelagic amphipods was investigated. Amphipods were collected by plankton tow, baited traps, coring (coring through sea ice) or hand collections (from tide cracks). Approximately 2000 individual amphipods were collected. About 75% of the amphipods collected were preserved in vials of absolute ethanol for DNA studies. The remaining 25% were split evenly between 4-5% EM grade gluteraldehyde, 5-6% formalin, and frozen dried for SEM, gut content analysis and isotope analysis respectively.

They will be examined for
1) an investigation of the diet of pelagic amphipods by means of visual microscopic gut content analysis, together with stable isotope analysis of carbon and nitrogen isotopic composition of the amphipod,
2) sequencing of the cytochrome c oxidase I (COXI) gene of each morphologically identified species and
3) a comparison of species composition and their respective diets between pelagic amphipods from Terra Nova Bay, an area covered by sea ice and those found in the open water of the Ross Sea.

The rate of movement of amphipods was determined by experimentally exposing amphipods to increasing water temperature and measuring the distance traveled over 30 seconds at each temperature. The distribution of amphipods under the ice was determined by lowering a plankton net to a depth of 5m below the sea ice, withdrawing it, emptying it and counting the amphipods, 3 times at 4 hour intervals over 24 hours.

Related URL
Link: VIEW RELATED INFORMATION
Description: LGP Project Homepage


Link: VIEW RELATED INFORMATION
Description: Investigators research page


Geographic Coverage
 N: -74.8333 S: -74.8333  E: 164.5  W: 164.5

Temporal Coverage
Start Date: 2006-11-03
Stop Date: 2006-12-09

Start Date: 2007-11-10
Stop Date: 2007-12-10


Location Keywords
CONTINENT > ANTARCTICA
CONTINENT > ANTARCTICA > TERRA NOVA BAY
GEOGRAPHIC REGION > POLAR


Science Keywords
BIOLOGICAL CLASSIFICATION >ANIMALS/INVERTEBRATES >ARTHROPODS >CRUSTACEANS >AMPHIPODS
BIOSPHERE >AQUATIC ECOSYSTEMS >MARINE HABITAT    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >SPECIES/POPULATION INTERACTIONS >DIURNAL MOVEMENTS    [Definition]


ISO Topic Category
BIOTA
OCEANS


Platform
LABORATORY    [Information]
FIELD INVESTIGATION    [Information]


Instrument
CORING DEVICES    [Information]
GRAB SAMPLERS    [Information]
TRAWL    [Information]


Project
LGP >Latitudinal Gradient Project    [Information]
EBA >Evolution and Biodiversity in the Antarctic    [Information]


Quality
Existing samples are held at Victoria University of Wellington with a spreadsheet of sample numbers. All raw data is held by the investigators. Please contact Dr Ken Ryan for more information.


Data Set Progress
COMPLETE


Originating Center


Data Center
Antarctica New Zealand, New Zealand Antarctic Institute, New Zealand    [Information]
Data Center URL: http://www.antarcticanz.govt.nz/

Data Center Personnel
Name: SHULAMIT GORDON
Phone: +64 3 358 0200
Fax: +64 3 358 0211
Email: s.gordon at antarcticanz.govt.nz
Contact Address:
Antarctica New Zealand
Private Bag 4745
City: Christchurch
Country: New Zealand


Personnel
KEN RYAN
Role: INVESTIGATOR
Phone: +64 4 463 6083
Fax: +64 4 463 5331
Email: ken.ryan at vuw.ac.nz
Contact Address:
Victoria University of Wellington
School of Biological Sciences
PO BOX 600
City: Wellington
Postal Code: 6140
Country: New Zealand


SHULAMIT GORDON
Role: DIF AUTHOR
Phone: +64 3 358 0200
Fax: +64 3 358 0211
Email: s.gordon at antarcticanz.govt.nz
Contact Address:
Antarctica New Zealand
Private Bag 4745
City: Christchurch
Country: New Zealand


Publications/References
Bryant, L. Maas, E., Davy S., Koh, EY, Rajanahally, M, Martin A, Ryan KG (2008). Biodiversity and diet of pelagic amphipods of the Ross Sea. Antarctic New Zealand Annual Conference, Dunedin July 2008.

Bryant, L. Amphipod diversity and taxonomy in the Ross Sea. MSc thesis in progress, Victoria University of Wellington, New Zealand.

Creation and Review Dates
DIF Creation Date: 2005-09-22
Last DIF Revision Date: 2009-03-16


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