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    <title>UTas ePrints - Late stage deferral of parturition in the viviparous lizard Niveoscincus ocellatus (Gray 1845): implications for offspring quality and survival</title>
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<meta content="The ability of viviparous lizards to defer parturition after completion of embryonic development is a potentially key
strategy for enhancing offspring fitness. Using the spotted snow skink,
Niveoscincus ocellatus, we investigated the
ability of females to defer birth if placed into cold conditions at the same time, for 1, 2 or 3 weeks at the end of gestation.
The ability to defer birth was compared between two populations at each end of the species’ altitudinal range.
We hypothesized that females from the high elevation population would be less likely to defer parturition under
extended periods of poor conditions, thus ensuring that young were not born too late in the season. In all but the 3-
week treatment group from the high elevation population, females were able to defer birth when placed under cold
conditions: for all groups, there was no treatment effect on offspring phenotype at birth, dispersal distance or survivorship
after release. However, there was a significant negative effect of treatment on offspring growth measured
after release, with the results differing between the populations. Females from the high elevation population were
less able to defer birth under long periods (3 weeks) of cold conditions, and this was accompanied by a decrease in
viability of the offspring. " name="eprints.abstract" />
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<meta content="Aiken JW. 1972. Aspirin and indomethacin prolong parturition
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Journal of Herpetology 37: 309–314." name="eprints.referencetext" />
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<meta content="The ability of viviparous lizards to defer parturition after completion of embryonic development is a potentially key
strategy for enhancing offspring fitness. Using the spotted snow skink,
Niveoscincus ocellatus, we investigated the
ability of females to defer birth if placed into cold conditions at the same time, for 1, 2 or 3 weeks at the end of gestation.
The ability to defer birth was compared between two populations at each end of the species’ altitudinal range.
We hypothesized that females from the high elevation population would be less likely to defer parturition under
extended periods of poor conditions, thus ensuring that young were not born too late in the season. In all but the 3-
week treatment group from the high elevation population, females were able to defer birth when placed under cold
conditions: for all groups, there was no treatment effect on offspring phenotype at birth, dispersal distance or survivorship
after release. However, there was a significant negative effect of treatment on offspring growth measured
after release, with the results differing between the populations. Females from the high elevation population were
less able to defer birth under long periods (3 weeks) of cold conditions, and this was accompanied by a decrease in
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    <h1 class="ep_tm_pagetitle">Late stage deferral of parturition in the viviparous lizard Niveoscincus ocellatus (Gray 1845): implications for offspring quality and survival</h1>
    <p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Atkins, Natalia</span> and <span class="person_name">Swain, Roy</span> and <span class="person_name">Wapstra, Erik</span> and <span class="person_name">Jones, Susan M.</span> (2007) <xhtml:em>Late stage deferral of parturition in the viviparous lizard Niveoscincus ocellatus (Gray 1845): implications for offspring quality and survival.</xhtml:em> Biological Journal of the Linnean Society, 90 . pp. 735-746. ISSN 0024-4066</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_2786' );" href="http://eprints.utas.edu.au/2189/2/late_stage_deferral.pdf" onmouseout="EPJS_HidePreview( event, 'doc_preview_2786' );"><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_2786"><table><tr><td><img alt="" src="http://eprints.utas.edu.au/2189/thumbnails/2/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/2189/2/late_stage_deferral.pdf"><span class="ep_document_citation">PDF</span></a> - Requires a PDF viewer<br />132Kb</td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1111/j.1095-8312.2007.00770.x">http://dx.doi.org/10.1111/j.1095-8312.2007.00770.x</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">The ability of viviparous lizards to defer parturition after completion of embryonic development is a potentially key&#13;
strategy for enhancing offspring fitness. Using the spotted snow skink,&#13;
Niveoscincus ocellatus, we investigated the&#13;
ability of females to defer birth if placed into cold conditions at the same time, for 1, 2 or 3 weeks at the end of gestation.&#13;
The ability to defer birth was compared between two populations at each end of the species’ altitudinal range.&#13;
We hypothesized that females from the high elevation population would be less likely to defer parturition under&#13;
extended periods of poor conditions, thus ensuring that young were not born too late in the season. In all but the 3-&#13;
week treatment group from the high elevation population, females were able to defer birth when placed under cold&#13;
conditions: for all groups, there was no treatment effect on offspring phenotype at birth, dispersal distance or survivorship&#13;
after release. However, there was a significant negative effect of treatment on offspring growth measured&#13;
after release, with the results differing between the populations. Females from the high elevation population were&#13;
less able to defer birth under long periods (3 weeks) of cold conditions, and this was accompanied by a decrease in&#13;
viability of the offspring. </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">Additional Information:</th><td valign="top" class="ep_row">The definitive version is available at www.blackwell-synergy.co&#13;
</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">dispersal – elevation – gestation – maternal effects – squamate – trade-offs.&#13;
</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/270706.html">270000 Biological Sciences &gt; 270700 Ecology and Evolution &gt; 270706 Life Histories (incl. Population Ecology)</a></td></tr><tr><th valign="top" class="ep_row">Collections:</th><td valign="top" class="ep_row">UNSPECIFIED</td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2189</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 Erik Wapstra</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">15 Oct 2007 14:47</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">12 Feb 2008 12:43</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=2189;">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=2189">item control page</a></p>
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