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<title>UTas ePrints - Geographic and annual variation in reproductive cycles in the Tasmanian spotted snow skink, Niveoscincus ocellatus (Squamata : Scincidae)</title>
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<meta content="Wapstra, Erik" name="eprints.creators_name" />
<meta content="Swain, Roy" name="eprints.creators_name" />
<meta content="Jones, Susan M." name="eprints.creators_name" />
<meta content="O'Reilly, Julianne" name="eprints.creators_name" />
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<meta content="2007-11-15 02:55:10" name="eprints.datestamp" />
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<meta content="Geographic and annual variation in reproductive
cycles in the Tasmanian spotted snow skink,
Niveoscincus ocellatus (Squamata : Scincidae)" name="eprints.title" />
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<meta content="We studied the reproductive cycle of two populations of the spotted snow skink, Niveoscincus ocellatus,
over a three-year period. This species is widespread in Tasmania and its distribution overlaps those of other
species in the genus that show two distinct reproductive strategies: annual reproduction that is completed
within one season, and biennial reproduction in which females carry advanced embryos throughout winter
hibernation. We chose populations representative of the climatic extremes of the species' distribution,
within these areas of overlap. Niveoscincus ocellatus maintains the same basic reproductive strategy in both
populations: summer gestation, primary autumn mating with obligate sperm storage by females, secondary
mating in spring, and predominantly spring vitellogenesis and ovulation. In both populations all females
reproduce annually, suggesting that reproductive frequency is not constrained by availability of energy.
However, we found distinct differences in the timing of ovulation and parturition. Females from our
subalpine site ovulated approximately one month later than those from our warmer, lowland site; parturition
was delayed by the same period so gestation length was unchanged. The delay in ovulation results in
gestation proceeding over the warmest months at the cold site. The annual reproductive cycle of this species
appears to constrain its distribution to the lower altitudinal/climatic range of alpine Niveoscincus species.
There were minor annual differences in the timing of reproductive events at each site, which we attribute to
variation in thermal conditions and the amount of precipitation.
" name="eprints.abstract" />
<meta content="1999" name="eprints.date" />
<meta content="published" name="eprints.date_type" />
<meta content="Australian Journal of Zoology" name="eprints.publication" />
<meta content="47" name="eprints.volume" />
<meta content="6" name="eprints.number" />
<meta content="539-550" name="eprints.pagerange" />
<meta content="10.1071/ZO99038" name="eprints.id_number" />
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<meta content="0004-959X" name="eprints.issn" />
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<meta content="Avery, R. A. (1971). Estimates of food consumption by the lizard Lacerta vivipara Jacquin. Journal of
Animal Ecology 40, 351-365.
Ballinger, R. E. (1983). Life history variations. In 'Lizard Ecology: Studies of a Model Organism'. (Eds R.
B. Huey, E. R. Pianka and T. W. Schoener.) pp. 241-260. (Harvard University Press: Cambridge.)
Ballinger, R. E., and Condon, J. D. (1981). Population ecology and the life history strategy of a montane
lizard (Sceloporus scalaris) in southeastern Arizona. Journal of Natural History 15, 213-222.
Beuchat, C. A. (1986). Reproductive influences on the thermoregulatory behaviour of a live-bearing lizard.
Copeia 1986, 971-979.
Beuchat, C. A. (1988). Temperature effects during gestation in a viviparous lizard. Journal of Thermal
Biology 13, 135-142.
Beuchat, C. A. (1989). Patterns of frequency of activity in a high altitude population of the iguanid lizard,
Sceloporus jarrovi. Journal of Herpetology 23, 152-158.
Cogger, H. G. (1992). 'Reptiles and Amphibians of Australia.' (Reed Books: Sydney.)
Cree, A., and Guillette, L. J. (1995). Biennial reproduction with a fourteen-month pregnancy in the gecko
Hoplodactylus maculatus from southern New Zealand. Journal of Herpetology 29, 163-173.
Doughty, P., and Shine, R. (1998). Reproductive energy allocation and long-term energy stores in a
viviparous lizard (Eulamprus tympanum). Ecology 79, 1073-1083.
Duvall, D., Guillette, L. J., and Jones, R. E. (1982). Environmental control of reptilian reproductive cycles.
In 'Biology of the Reptilia'. (Eds C. Gans and F. H. Pough.) pp. 210-231. (Academic Press: New York.)
Flemming, A. F. (1993). The male reproductive cycle of the lizard Pseudocordylus m. melanotus (Sauria :
Cordylidae). Journal of Herpetology 27, 473-478.
Goldberg, S. R. (1974). Reproduction in mountain and lowland populations of the lizard Sceloporus
occidentalis. Copeia 1974, 176-182.
Goldberg, S. R. (1975). Yearly variations in the ovarian cycle of the lizard Sceloporus occidentalis. Journal
of Herpetology 9, 187-189.
Guillette, L. J., and Casas-Andreu, G. (1980). Fall reproductive activity in the high altitude Mexican lizard,
Sceloporus grammicus microlepidotus. Journal of Herpetology 14, 143-147.
Guillette, L. J., and Casas-Andreu, G. (1987). The reproductive biology of the high elevation Mexican lizard
Barisia imbricata. Herpetologica 43, 29-38.
Guillette, L. J., and Méndez-de la Cruz, F. R. (1993). The reproductive cycle of the viviparous Mexican
lizard Sceloporus torquatus. Journal of Herpetology 27, 168-174.
Heatwole, H., and Taylor, J. (1987). 'Ecology of Reptiles.' (Surrey Beatty & Sons: Sydney.)
Hutchinson, M. N., and Schwaner, T. D. (1991). Genetic relationships among the Tasmanian scincid lizards
of the genus Niveoscincus. Journal of Herpetology 25, 49-58.
Hutchinson, M. N., Robertson, P., and Rawlinson, P. A. (1989). Redescription and ecology of the endemic
Tasmanian scincid lizards Leiolopisma microlepidotum and L. pretiosum. Papers and Proceedings of the
Royal Society of Tasmania 123, 257-273.
Hutchinson, M. N., Donnellan, S. C., Baverstock, P. R., Krieg, M., Simms, S., and Burgin, S. (1990).
Immunological relationships and generic revision of the Australian lizards assigned to the genus
Leiolopisma (Scincidae : Lygosominae). Australian Journal of Zoology 38, 535-554.
James, C. D. (1991). Annual variation in reproductive cycles of scincid lizards (Ctenotus) in central
Australia. Copeia 3, 744-760.
James, C., and Shine, R. (1985). The seasonal timing of reproduction: a tropical-temperate comparison in
Australian lizards. Oecologia 67, 464-474.
Jones, S. M., and Ballinger, R. E. (1987). Comparative life histories of Holbrookia maculata and Sceloporus
undulatus in Western Nebraska. Ecology 68, 1828-1838.
Jones, S. M., and Swain, R. (1996). Annual reproductive cycle and annual cycles of reproductive hormones
in plasma of female Niveoscincus metallicus (Scincidae) from Tasmania. Journal of Herpetology 30,
140-146.
Jones, S. M., Wapstra, E., and Swain, R. (1997). Asynchronous male and female gonadal and plasma steroid
concentrations in a viviparous lizard, Niveoscincus ocellatus (Scincidae), from Tasmania. General and
Comparative Endocrinology 108, 271-281.
Lee, J. C., Clayton, D., Eisenstein, S., and Perez, I. (1989). The reproductive cycle of Anolis sagrei in
southern Florida. Copeia 1989, 930-937.
Mathies, T., and Andrews, R. M. (1995). Thermal and reproductive biology of high and low elevation
populations of the lizard Sceloporus scalaris: implications for the evolution of viviparity. Oecologica
104, 101-111.
Melville, J., and Swain, R. (1998). Evolutionary relationships within the snow skinks (Squamata : Scincidae :
Niveoscincus) of Tasmania. Australian Biologist 11, 22-25.
Melville, J., and Swain, R. (2000). Mitochondrial DNA-sequence based phylogeny and biogeography of the
snow skinks (Squamata : Scincidae : Niveoscincus) of Tasmania. Herpetologica in press.
Méndez-de la Cruz, F. R., Guillette, L. J., Villigrán santa Cruz, M., and Casas-Andreu, G. (1988).
Reproductive and fat body cycles of the viviparous lizard Sceloporus mucronatus (Sauria : Iguanidae).
Journal of Herpetology 22, 1-12.
Olsson, M., and Shine, R. (1999a). Timing of parturition as a maternal care tactic in an alpine lizard species.
Evolution 52, 1861-1864.
Olsson, M., and Shine, R. (1999b). Plasticity in frequency of reproduction in an alpine lizard, Niveoscincus
microlepidotus. Copeia 99, 794-796.
Olsson, M., Birkhead, T., and Shine, R. (1999). Can relaxed time constraints on sperm production eliminate
protandry in an ectotherm. Biological Journal of the Linnean Society 66, 159-170.
Qualls, C. P. (1997). Effects of reproductive mode and climate on success in the Australian lizard, Lerista
bougainvillii. Journal of Herpetology 31, 60-65.
Rawlinson, P. A. (1974). Biogeography and ecology of the reptiles of Tasmania and the Bass Strait area. In
'Biogeography and Ecology in Tasmania'. (Ed. W. D. Williams.) pp. 291-338. (Dr W. Junk: The
Hague.)
Rawlinson, P. A. (1975). Two new lizard species from the genus Leiolopisma (Scincidae : Lygosominae) in
southeastern Australia and Tasmania. Memoirs of the National History Museum of Victoria 36, 1-16.
Rohr, D. H. (1997). Demographic and life-history variation in two proximate populations of a viviparous
skink separated by a steep altitudinal gradient. Journal of Animal Ecology 66, 567-578.
Schwarzkopf, L. (1992). Annual variation of litter size and offspring size in a viviparous skink.
Herpetologica 48, 390-395.
Schwarzkopf, L., and Shine, R. (1991). Thermal biology of reproduction in viviparous skinks, Eulamprus
tympanum: why do gravid females bask more? Oecologia 88, 562-569.
Shine, R. (1985). The reproductive biology of Australian reptiles: a search for general patterns. In 'Biology
of Australasian Frogs and Reptiles'. (Eds G. Grigg, R. Shine and H. Ehmann.) pp. 311-318. (Surrey
Beatty & Sons: Sydney.)
Shine, R., and Harlow, P. (1993). Maternal thermoregulation influences offspring viability in a viviparous
lizard. Oecologia 96, 122-127.
Smith, S. A., and Shine, R. (1997). Intraspecific variation in reproductive mode within the scincid lizard
Saiphos equalis. Australian Journal of Zoology 45, 435-445.
Swain, R. (1972). The fauna of south-western Tasmania. In 'The Tasmanian Year Book'. pp. 59-64.
(Government Printer: Hobart.)
Swain, R., and Jones, S. M. (1994). Annual cycle of plasma testosterone and other reproductive parameters
in the Tasmanian skink, Niveoscincus metallicus. Herpetologica 50, 502-509.
Taylor, J. A. (1985). Reproductive biology of the Australian lizard Ctenotus taeniolatus. Herpetologica 41,
408-418.
Van Damme, R., Bauwens, D., and Verheyen, R. F. (1991). The thermal dependence of feeding behaviour,
food consuption and gut passage time in the lizard Lacerta vivipara Jacquin. Functional Ecology 5,
507-517.
Waldschmidt, S. R., Jones, S. M., and Porter, W. P. (1986). The effect of body temperature and feeding
regime on activity, passage time, and digestive coefficient in the lizard Uta stansburiana. Physiological
Zoology 59, 376-383.
Wapstra, E. (1998). Life history and reproductive variation in the spotted skink, Niveoscincus ocellatus.
Ph.D. Thesis, University of Tasmania, Hobart.
Wapstra, E., and Swain, R. (1996). Feeding ecology of the Tasmanian spotted skink, Niveoscincus ocellatus
(Squamata : Scincidae). Australian Journal of Zoology 44, 205-213." name="eprints.referencetext" />
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<meta content="We studied the reproductive cycle of two populations of the spotted snow skink, Niveoscincus ocellatus,
over a three-year period. This species is widespread in Tasmania and its distribution overlaps those of other
species in the genus that show two distinct reproductive strategies: annual reproduction that is completed
within one season, and biennial reproduction in which females carry advanced embryos throughout winter
hibernation. We chose populations representative of the climatic extremes of the species' distribution,
within these areas of overlap. Niveoscincus ocellatus maintains the same basic reproductive strategy in both
populations: summer gestation, primary autumn mating with obligate sperm storage by females, secondary
mating in spring, and predominantly spring vitellogenesis and ovulation. In both populations all females
reproduce annually, suggesting that reproductive frequency is not constrained by availability of energy.
However, we found distinct differences in the timing of ovulation and parturition. Females from our
subalpine site ovulated approximately one month later than those from our warmer, lowland site; parturition
was delayed by the same period so gestation length was unchanged. The delay in ovulation results in
gestation proceeding over the warmest months at the cold site. The annual reproductive cycle of this species
appears to constrain its distribution to the lower altitudinal/climatic range of alpine Niveoscincus species.
There were minor annual differences in the timing of reproductive events at each site, which we attribute to
variation in thermal conditions and the amount of precipitation.
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<h1 class="ep_tm_pagetitle">Geographic and annual variation in reproductive cycles in the Tasmanian spotted snow skink, Niveoscincus ocellatus (Squamata : Scincidae)</h1>
<p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Wapstra, Erik</span> and <span class="person_name">Swain, Roy</span> and <span class="person_name">Jones, Susan M.</span> and <span class="person_name">O'Reilly, Julianne</span> (1999) <xhtml:em>Geographic and annual variation in reproductive cycles in the Tasmanian spotted snow skink, Niveoscincus ocellatus (Squamata : Scincidae).</xhtml:em> Australian Journal of Zoology, 47 (6). pp. 539-550. ISSN 0004-959X</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 href="http://eprints.utas.edu.au/2422/1/1999WapstraetalAustJZool.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/2422/1/1999WapstraetalAustJZool.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />228Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input accept-charset="utf-8" value="3129" name="docid" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1071/ZO99038">http://dx.doi.org/10.1071/ZO99038</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">We studied the reproductive cycle of two populations of the spotted snow skink, Niveoscincus ocellatus,
over a three-year period. This species is widespread in Tasmania and its distribution overlaps those of other
species in the genus that show two distinct reproductive strategies: annual reproduction that is completed
within one season, and biennial reproduction in which females carry advanced embryos throughout winter
hibernation. We chose populations representative of the climatic extremes of the species' distribution,
within these areas of overlap. Niveoscincus ocellatus maintains the same basic reproductive strategy in both
populations: summer gestation, primary autumn mating with obligate sperm storage by females, secondary
mating in spring, and predominantly spring vitellogenesis and ovulation. In both populations all females
reproduce annually, suggesting that reproductive frequency is not constrained by availability of energy.
However, we found distinct differences in the timing of ovulation and parturition. Females from our
subalpine site ovulated approximately one month later than those from our warmer, lowland site; parturition
was delayed by the same period so gestation length was unchanged. The delay in ovulation results in
gestation proceeding over the warmest months at the cold site. The annual reproductive cycle of this species
appears to constrain its distribution to the lower altitudinal/climatic range of alpine Niveoscincus species.
There were minor annual differences in the timing of reproductive events at each site, which we attribute to
variation in thermal conditions and the amount of precipitation.
</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">Copyright 1999 CSIRO. http://www.publish.csiro.au/nid/90.htm</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 > 270700 Ecology and Evolution > 270706 Life Histories (incl. Population Ecology)</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2422</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 Nov 2007 13:55</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=2422;">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&eprintid=2422">item control page</a></p>
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