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Genetic sequencing of terrestrial invertebrates along the latitudinal range of the Ross Dependency to determine patterns of biodiversity, phylogenetic relationships and levels of gene flow among populations

Entry ID: K028_1999_2008_NZ_1

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Summary

Abstract: Molecular techniques (allozyme electrophoresis and mitochondrial gene sequencing) were used to characterise the Antarctic terrestrial biodiversity along the latitudinal range of the Ross Dependency to assess existing levels of biodiversity and to provide information on the origin, evolutionary relationships and present day dispersal patterns of Antarctic invertebrate taxa. Arthropods (springtails ... and mites) nematodes, rotifers and tardigrades were collected from Ross Island (Cape Evans, Cape Royds, Cape Bird, Cape Crozier, Observation Hill, around Scott Base), Cape Hallett, Granite Harbour (Cape Geology, Botany Bay, Mt England, Flatiron, Mt Suess and Sperm Bluff), Beaufort Island, Marble Point, the ice free areas of Wright and Victoria Valley’s, the Taylor Valley, the Miers Valley, the Garwood Valley, Lake Penny, Lake Morning and Minna Bluff, the Darwin Glacier area (mites and nematodes only from the Brown Hills region, the base of the Foggydog Glacier and the eastern end of Diamond Hill) and Mt Kyffin.

The springtails (Collembola) species collected include Desoria klovstadi, Fresia grisea, Cryptopygus cisantarcticus, Gomphiocephalus hodgsoni, Antarctophorus sudpolaris, Biscoia subpolaris and Neocryptopygus nivicolis. The mite (Acari) species collected were Stereotydeus mollis and Nanorchestes spp. Some genetic work was completed on one species of nematode Scottnema lindsayae from Mt Kyffin Traditional, morphologically-based, taxonomic approaches for assessing biodiversity were combined with more recent molecular techniques (e.g. allozyme and DNA analyses) with individuals from each study site evaluated using protein electrophoresis, mtDNA and morphological analyses. Allozyme electrophoresis was used to determine genetic differences within and among populations. Genotype frequencies were recorded for each locus at each site. Detailed and quantitative observations were made on modes of dispersal through the use of windsocks, pitfall traps and stream drift nets. These analyses are designed to accurately assess existing levels of biodiversity and to provide information on the origin, evolutionary relationships and present day dispersal patterns of Antarctic invertebrate taxa. It could also be used in understanding a species ability to track environmental changes and defining units for conservation management. This programme will improve our knowledge of the Antarctic terrestrial fauna and provide information for the better management and conservation of Antarctic terrestrial habitats.

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Description: The unique genetic sequences of springtails and mites are loaded into the international database GENBANK.

Accession numbers are:
AY294562-AY294608
DQ309560-DQ309567
DQ285391-DQ285394
DQ285399-DQ285406
DQ285297
DQ365783-DQ365786
DQ365770-DQ365772
AY191995
DQ305385-DQ305398
DQ309572-DQ309580
DQ305368
AJ312973-AJ313012
EF119745-EF119773
AY626779

Geographic Coverage

(Click for Interactive Map)

Spatial coordinates

	N: -72.0	S: -84.0	E: 170.0	W: 160.0

Min Depth: SURFACE Max Depth: 0.05

Temporal Coverage

Start Date: 2000-01-14

Stop Date: 2000-01-29

Location Keywords

CONTINENT > ANTARCTICA > TERRA NOVA BAY

CONTINENT > ANTARCTICA > CAPE HALLETT

Science Keywords

LAND SURFACE > SOILS > MICROFAUNA

BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CHELICERATES > ARACHNIDS

ISO Topic Category

BIOTA

ENVIRONMENT

Platform

GROUND-BASED OBSERVATIONS

Project

LGP > Latitudinal Gradient Project

EBA > Evolution and Biodiversity in the Antarctic

Ancillary Keywords

MITES

SPRINGTAILS

Data Set Progress

IN WORK

Data Center

Antarctica New Zealand, New Zealand Antarctic Institute, New Zealand

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

IAN HOGG

Role: INVESTIGATOR

Phone: +64 7 838 4225

Fax: +64 4 838 4324

Email: hogg at waikato.ac.nz

Contact Address:

Department of Biological Sciences

University of Waikato

Private Bag 3105

City: Hamilton

Country: NEW ZEALAND

CEISHA POIROT

Role: DIF AUTHOR

Phone: +64 3 358 0200

Fax: +64 3 358 0211

Email: c.poirot at antarcticanz.govt.nz

Contact Address:

Antarctica New Zealand

Private Bag 4745

City: Christchurch

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

Caruso, T., Hogg, I.D., Carapelli, A., Frati, F., Bargagli, R. Large-scale spatial patterns in the distribution of Collembola (Hexapoda) species in Antarctic terrestrial ecosystems. Journal of biogeography 36: 879-886 2009.

Creation and Review Dates

DIF Creation Date: 2005-05-22

Last DIF Revision Date: 2010-02-23

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