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
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Geographic Coverage
(Click for Interactive Map)
Spatial coordinates
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N: -72.0
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S: -84.0
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E: 170.0
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W: 160.0
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Min Depth:
SURFACE
Max Depth:
0.05
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Temporal Coverage
Start Date:
2000-01-14
Stop Date:
2000-01-29
Start Date:
2001-01-11
Stop Date:
2001-01-19
Start Date:
2002-01-11
Stop Date:
2002-01-19
Start Date:
2003-01-07
Stop Date:
2003-01-11
Start Date:
2004-01-06
Stop Date:
2004-01-17
Start Date:
2004-12-09
Stop Date:
2004-12-14
Start Date:
2007-01-19
Stop Date:
2007-01-31
Start Date:
2008-01-08
Stop Date:
2008-01-12
Use Constraints
Although these data and information have been processed successfully on the originators' computer system, no warranty expressed or implied is made regarding the accuracy or utility of the data and information on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and information, and aggregate use with other data and information. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data and information. The originator shall not be held liable for improper or incorrect use of the data and information described and/or contained herein.
Personnel
Role:
DIF AUTHOR
Phone:
(301) 614-6898
Fax:
301-614-5268
Email:
Tyler.B.Stevens at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Global Change Master Directory
City:
Greenbelt
Province or State:
MD
Postal Code:
20771
Country:
USA
Role:
TECHNICAL CONTACT
Phone:
(360) 305-8822
Email:
lotts at montana.edu
Contact Address:
NBII Mountain Prairie Information Node Coordinator Informatics Lab
Big Sky Institute 106 AJM Johnson Hall
City:
Bozeman
Province or State:
MT
Postal Code:
59717
Country:
USA
Creation and Review Dates
DIF Creation Date:
2007-03-13
Last DIF Revision Date:
2007-08-15
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