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    <title>UTas ePrints - Tardigrade eggs and exuviae in Antarctic lake sediments: insights into Holocene dynamics and origins of the fauna</title>
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    <meta content="Gibson, John A.E." name="eprints.creators_name" />
<meta content="Cromer, Louise" name="eprints.creators_name" />
<meta content="Agius, Janelle T." name="eprints.creators_name" />
<meta content="McInnes, Sandra J." name="eprints.creators_name" />
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<meta content="Tardigrade eggs and exuviae in Antarctic lake sediments: insights into Holocene dynamics and origins of the fauna" name="eprints.title" />
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<meta content="colonisation, population dynamics, ecological change, Macrobiotus, Minibiotus, Acutuncus" name="eprints.keywords" />
<meta content="The preservation of tardigrade eggs and exuviae in Antarctic lake sediments provided an opportunity to assess post-glacial colonisation and Holocene tardigrade dynamics on the southern continent. Tardigrade eggs were recovered from five lakes, two from the maritime Antarctic and three from continental Antarctica. Eggs were identified from the following species: Dactylobiotus cf. ambiguus, Macrobiotus furciger, Macrobiotus blocki, Minibiotus weinerorum and Acutuncus antarcticus. Other, unornamented eggs were also observed. The preservation of some of these eggs in exuviae allowed identification to at least genus. Significant variations were observed in egg abundance within the sediment of each lake, and in one lake a species (Dactylobiotus cf. ambiguus) became locally extinct, probably as the result of penguin-associated eutrophication. Tardigrades generally did not become abundant for a considerable period after the lakes' formation. The presence of an in-part endemic fauna is consistent with slow colonisation from Antarctic sources rather than wind transport from extra-continental sites. Tardigrade eggs appear to be abundant in high-latitude
lake sediments, and greater use could be made of these records when evaluating tardigrade dynamics during the Holocene." name="eprints.abstract" />
<meta content="2007" name="eprints.date" />
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<meta content="Journal of Limnology" name="eprints.publication" />
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<meta content="Bertolani, R. &amp; D. Grimaldi. 2000. A new eutardigrade (Tardigrada:
Milnesiidae) in amber from the Upper Cretaceous
(Turonian) of New Jersey. In: D. Grimaldi (Ed.), Studies
on fossils in amber, with particular reference of the Cretaceous
of New Jersey. Backhuys Publishers, Leiden: 103-
110.
Binda, M.G. &amp; G. Pilato. 1994. Dactylobiotus caldarellai,
nuova specie di eutardigrado della Terra del Fuoco. Animalia,
21: 87-91.
Binda, M.G. &amp; G. Pilato. 1999. Dactylobiotus lombardoi sp.
n. (Eutardigrada: Macrobiotidae) from Terra del Fuego,
with a key to the Dactylobiotus-species. Zool. Anz., 238:
147-155.
Christner, B.C., B.H. Kvitko &amp; J.N. Reeve. 2003. Molecular
identification of Bacteria and Eukarya inhabiting an Antarctic
cryoconite hole. Extremophiles, 7: 177-183.
Convey, P., &amp; S.J. McInnes. 2005. Exceptional tardigradedominated
ecosystems in Ellsworth Land, Antarctica.
Ecology, 86: 519-527.
Cooper, K.W. 1964. The first fossil tardigrade: Beorn leggi
Cooper, from Cretaceous amber. Psyche, 71: 41-48.
Cromer, L., J.A.E. Gibson, K.M. Swadling &amp; D.A. Hodgson.
2006. Evidence for a lacustrine faunal refuge in the
Larsemann Hills, East Antarctica, during the Last Glacial
Maximum. J. Biogeogr., 33: 1314-1323.
Dastych, H. 1984. The Tardigrada from Antarctic with descriptions
of several new species. Acta Zool. Cracov., 27:
377-436.
Dastych, H., H. Kraus &amp; K. Thaler. 2003. Redescription and
notes on the biology of the glacier tardigrade Hypsibius
klebelsbergi Mihelĉiĉ, 1959 (Tardigrada), based on material
from the Ötztal Alps, Austria. Mitt. Hamb. Zool. Mus.
Inst., 100: 73-100.
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2006. Pleistocene deglaciation chronology of the Amery
Oasis and Radok Lake, northern Prince Charles Mountains,
Antarctica. Earth Plan. Sci. Letters, 243: 229-243.
Frey, D.G. 1964. Remains of animals in Quaternary lake and
bog sediments and their interpretation. Arch. Hydrobiol.,
Beiheft (Ergebnisse der Limnologie), 2: 1-114.
Gibson, J.A.E., &amp; R. Zale. 2006. Holocene development of the
fauna of Lake Boeckella, northern Antarctic Peninsula.
The Holocene, 16: 825-634.
Hodgson, D.A., P.E. Noon, W. Vyverman, C.L. Bryant, D.B.
Gore, P. Appleby, M. Gilmour, E. Verleyen, K. Sabbe,
V.J. Jones, J.C. Ellis-Evans, &amp; P.B. Wood. 2001. Were the
Larsemann Hills ice-free through the Last Glacial Maximum?
Antarctic Sci., 13: 440-454.
Hodgson, D.A., E. Verleyen, K. Sabbe, A.H. Squier, B.J.
Keely, M.J. Leng, K.M. Saunders &amp; W. Vyverman. 2005.
Late Quaternary climate-driven environmental change in
the Larsemann Hills, east Antarctica, multi-proxy evidence
from a lake sediment core. Quaternary Res., 64: 83-99.
Jankovska, V. 1991. Unbekannte Objekte in Pollenpräparaten
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development in Europe and regions relevant to its palaeofloristic
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19-23.
Maslen, N.R., &amp; P. Convey. 2006. Nematode biodiversity and
distribution in the southern maritime Antarctic – clues to
history. Soil Biol. Biochem., 38: 3141-3151.
McInnes, S.J., &amp; P.J.A. Pugh. 1998. Biogeography of limnoterrestrial
Tardigrada, with particular reference to the Antarctic
fauna. J. Biogeogr., 25: 31-36.
McInnes, S.J., &amp; P.J.A. Pugh. 1999. Zonation in Antarctic
lake-dwelling benthic meiofauna, with emphasis on the
Tardigrada. Zool. Anz., 238: 283-288.
Miller, W.R., &amp; H. Heatwole. 2003. Tardigrades of the subantarctic:
5000 year old eggs from Marion Island. Abstracts,
9th International Symposium on Tardigrada, St
Pete Beach, Florida: 46.
Miller, J.D., P. Horne, H. Heatwole, W.R. Miller &amp; L.
Bridges. 1988. A survey of terrestrial Tardigrada of the
Vestfold Hills, Antarctica. Hydrobiologia, 165: 197-208.
Müller, D.R &amp; W.H. Pollard. 2004. Gradient analysis of cryoconite
ecosystems from two polar glaciers. Polar Biol., 27:
66-74.
Pilato, G., &amp; M.G. Binda. 1997. Acutuncus, a new genus of
Hypsibiidae (Eutardigrada). Entomol. Mitt. Zool. Mus.,
Hamburg, 12: 159-162.
Pilato, G. &amp; M.G. Binda. 2001. Biogeography and limno-terrestrial
tardigrades: are they truly incompatible binomials?
Zool. Anz., 240: 511-516.
Pugh, P.J.A. &amp; S.J. McInnes. 1998. The origin of Arctic terrestrial
and freshwater tardigrades. Polar Biol., 19: 177-
182.
Smol, J.P., H.J.B. Birks &amp; W.M. Last. 2001. Tracking environmental
change using lake sediments: zoological indicators.
Developments in Paleoenvironmental Research, 4.
Springer, Dordrecht: 240 pp.
Tippet, R. 1964. An investigation into the nature of the layering
of deepwater sediments in two eastern Ontario lakes.
Can. J. Bot., 4: 1693-1708.
Tumanov, D.A. 2006. Five new species of the genus Milnesium
(Tardigrada, Eutardigrada, Milnesiidae). Zootaxa,
1122: 1–23.
Wagner, B., H. Cremer, N. Hultzsch, D.B. Gore &amp; M. Melles.
2004. Late Pleistocene and Holocene history of Lake Terrasovoje,
Amery Oasis, East Antarctica, and its climatic
and environmental implications. J. Paleolimnol., 32: 321-
339.
Zale, R. 1994. 14C age corrections in antarctic lake sediments
inferred from geochemistry. Radiocarbon, 36: 173-185.
Zale, R. &amp; W. Karlén. 1989. Lake sediment cores from the
Antarctic Peninsula and surrounding islands. Geografiska
Ann., 71A: 211-220." name="eprints.referencetext" />
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<meta content="The preservation of tardigrade eggs and exuviae in Antarctic lake sediments provided an opportunity to assess post-glacial colonisation and Holocene tardigrade dynamics on the southern continent. Tardigrade eggs were recovered from five lakes, two from the maritime Antarctic and three from continental Antarctica. Eggs were identified from the following species: Dactylobiotus cf. ambiguus, Macrobiotus furciger, Macrobiotus blocki, Minibiotus weinerorum and Acutuncus antarcticus. Other, unornamented eggs were also observed. The preservation of some of these eggs in exuviae allowed identification to at least genus. Significant variations were observed in egg abundance within the sediment of each lake, and in one lake a species (Dactylobiotus cf. ambiguus) became locally extinct, probably as the result of penguin-associated eutrophication. Tardigrades generally did not become abundant for a considerable period after the lakes' formation. The presence of an in-part endemic fauna is consistent with slow colonisation from Antarctic sources rather than wind transport from extra-continental sites. Tardigrade eggs appear to be abundant in high-latitude
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    <h1 class="ep_tm_pagetitle">Tardigrade eggs and exuviae in Antarctic lake sediments: insights into Holocene dynamics and origins of the fauna</h1>
    <p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Gibson, John A.E.</span> and <span class="person_name">Cromer, Louise</span> and <span class="person_name">Agius, Janelle T.</span> and <span class="person_name">McInnes, Sandra J.</span> and <span class="person_name">Marley, Nigel J.</span> (2007) <xhtml:em>Tardigrade eggs and exuviae in Antarctic lake sediments: insights into Holocene dynamics and origins of the fauna.</xhtml:em> Journal of Limnology, 66 (Supplement 1). pp. 65-71. ISSN 1723-8633</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a onmouseover="EPJS_ShowPreview( event, 'doc_preview_2242' );" href="http://eprints.utas.edu.au/1749/1/J._Limnol.pdf" onmouseout="EPJS_HidePreview( event, 'doc_preview_2242' );"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a><div class="ep_preview" id="doc_preview_2242"><table><tr><td><img alt="" src="http://eprints.utas.edu.au/1749/thumbnails/1/preview.png" class="ep_preview_image" border="0" /><div class="ep_preview_title">Preview</div></td></tr></table></div></td><td valign="top"><a href="http://eprints.utas.edu.au/1749/1/J._Limnol.pdf"><span class="ep_document_citation">PDF</span></a> - Requires a PDF viewer<br />1258Kb</td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://www.iii.to.cnr.it/pubblicaz/JL_66_supl1/10_Gibson.pdf">http://www.iii.to.cnr.it/pubblicaz/JL_66_supl1/10_Gibson.pdf</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">The preservation of tardigrade eggs and exuviae in Antarctic lake sediments provided an opportunity to assess post-glacial colonisation and Holocene tardigrade dynamics on the southern continent. Tardigrade eggs were recovered from five lakes, two from the maritime Antarctic and three from continental Antarctica. Eggs were identified from the following species: Dactylobiotus cf. ambiguus, Macrobiotus furciger, Macrobiotus blocki, Minibiotus weinerorum and Acutuncus antarcticus. Other, unornamented eggs were also observed. The preservation of some of these eggs in exuviae allowed identification to at least genus. Significant variations were observed in egg abundance within the sediment of each lake, and in one lake a species (Dactylobiotus cf. ambiguus) became locally extinct, probably as the result of penguin-associated eutrophication. Tardigrades generally did not become abundant for a considerable period after the lakes' formation. The presence of an in-part endemic fauna is consistent with slow colonisation from Antarctic sources rather than wind transport from extra-continental sites. Tardigrade eggs appear to be abundant in high-latitude
lake sediments, and greater use could be made of these records when evaluating tardigrade dynamics during the Holocene.</p></div><table style="margin-bottom: 1em" cellpadding="3" class="not_ep_block" border="0"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">colonisation, population dynamics, ecological change, Macrobiotus, Minibiotus, Acutuncus</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/270705.html">270000 Biological Sciences &gt; 270700 Ecology and Evolution &gt; 270705 Palaeoecology</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">1749</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Dr John A.E. Gibson</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">10 Sep 2007</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">09 Jan 2008 02:30</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=1749;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&amp;eprintid=1749">item control page</a></p>
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