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    <title>UTas ePrints - Differential sex allocation in sand lizards: bright males induce daughter production in a species with heteromorphic sex chromosomes</title>
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    <meta content="Olsson, Mats" name="eprints.creators_name" />
<meta content="Wapstra, Erik" name="eprints.creators_name" />
<meta content="Uller, Tobias" name="eprints.creators_name" />
<meta content="molsson@uow.edu.au" name="eprints.creators_id" />
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<meta content="Differential sex allocation
in sand lizards: bright
males induce daughter
production in a species
with heteromorphic sex
chromosomes" name="eprints.title" />
<meta content="pub" name="eprints.ispublished" />
<meta content="270205" name="eprints.subjects" />
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<meta content="sex allocation; maternal allocation;
male attractiveness;
major histocompatibility complex;
heteromorphic sex chromosomes
" name="eprints.keywords" />
<meta content="In sand lizards (Lacerta agilis), males with
more and brighter nuptial coloration also have
more DNA fragments visualized in restriction
fragment length polymorphism analysis of their
major histocompatibility complex class I loci
(and, hence, are probably more heterozygous at
these loci). Such males produce more viable
offspring, with a particularly strong viability
effect on daughters. This suggests that females
should adjust both their reproductive investment
and offspring sex ratio in relation to male
coloration (i.e. differential allocation). Our
results show that experimental manipulation of
partner coloration in the wild results in signifi-
cantly higher maternal effort and a 10% higher
proportion of daughters than sons. This supports
the hypothesis that females increase their
maternal energetic expenditure and adjust their
offspring sex ratio in response to high-quality
partners. However, it also suggests that this has
probably evolved through natural selection for
increased offspring viability (primarily through
production of daughters), rather than through
increased mate attraction (e.g. sexy sons).
" name="eprints.abstract" />
<meta content="2005" name="eprints.date" />
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<meta content="378-380" name="eprints.pagerange" />
<meta content="10.1098/rsbl.2005.0327" name="eprints.id_number" />
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<meta content="Anderholm, S., Olsson, M., Wapstra, E. &amp; Ryberg, K. 2004
Fit and fat from enlarged badges: a field experiment on
male sand lizards. Proc. R. Soc. B 271(Suppl. 4),
S142–S144. (doi:10.1098/rsbl.2003.0094.)
Andersson, M. 1994 Sexual selection. Princeton University
Press.
Burley, N. 1981 Sex-ratio manipulation and selection for
attractiveness. Science 211, 721–722.
Burley, N. 1982 Facultative sex ratio manipulation. Am.
Nat. 120, 81–107.
Burley, N. 1986 Sex-ratio manipulation in color-banded
populations of zebra finches. Evolution 40, 1191–1206.
Charnov, E. 1982 The theory of sex allocation. Princeton
University Press.
Ellegren, H., Gustafsson, L. &amp; Sheldon, B. C. 1996 Sex
ratio adjustment in relation to paternal attractiveness in
a wild bird population. Proc. Natl Acad. Sci. USA 93,
11 723–11 728.
Fedorka, K. M. &amp; Mousseau, T. A. 2004 Female mating
bias results in conflicting sex-specific offspring fitness.
Nature 429, 65–67.
Grindstaff, J. L., Buerkle, C. A., Casto, J. M., Nolan Jr, V.
&amp; Ketterson, E. D. 2001 Offspring sex ratio is unrelated
to male attractiveness in dark-eyed juncos ( Junco hyemalis).
Behav. Ecol. Sociobiol. 50, 312–316.
Gullberg, A., Olsson, M. &amp; Tegelstro¨m, H. 1997 Male
mating success, reproductive success and multiple paternity
in a natural population of sand lizards: behavioural
and molecular genetics data. Mol. Ecol. 6, 105–112.
Hardy, I. C. W. 2002 Sex ratios: concepts and research
methods. Cambridge University Press.
Harlow, P. 1996 A harmless technique for sexing hatchling
lizards. Herpetol. Rev. 27, 71–72.
Olsson, M. &amp; Madsen, T. 2001 ‘Promiscuity’ in sand lizards
and adder snakes: causes and consequences. J. Hered.
92, 190–197.
Olsson, M., Gullberg, A. &amp; Tegelstro¨m, H. 1996 Mate
guarding in male sand lizards (Lacerta agilis). Behaviour
133, 367–386.
Olsson, M., Madsen, T., Nordby, J., Wapstra, E., Ujvari, B.
&amp; Wittsell, H. 2003 Major histocompatibility complex
and mate choice in sand lizards. Proc. R. Soc. B
270(Suppl. 2), S254–S256. (doi:10.1098/rsbl.2003.
0079.)
Olsson, M., Ujvari, B., Madsen, T., Uller, T. &amp; Wapstra, E.
2004 Haldane rules: costs of outbreeding at production
of daughters in sand lizards. Ecol Lett. 7, 924–928.
Olsson, M., Madsen, T., Uller, T., Wapstra, E. &amp; Ujvari, B.
2005 The role of Haldane’s rule in sex allocation.
Evolution 59, 221–225.
Olsson, M., Madsen, T., Wapstra, E., Silverin, Ujvari, B. &amp;
Wittzell, H. In press. MHC, health, color, and reproductive
success in sand lizards. Behav. Ecol. Sociobiol.
Saino, N., Ellegren, H. &amp; Møller, A. P. 1999 No evidence
for adjustment of sex allocation in relation to paternal
ornamentation and paternity in barn swallows. Mol. Ecol.
8, 399–406.
Shaw, R. F. &amp; Mohler, J. D. 1953 The selective advantage
of the sex ratio. Am. Nat. 87, 337–342.
Sheldon, B. C., Andersson, S., Griffith, S. C., O¨
rnborg, J.
&amp; Sendencka, J. 1999 Ultraviolet colour variation influences
blue tit sex ratio. Nature 402, 874–877.
West, S. A. &amp; Sheldon, B. 2002 Constraints in the evolution
of sex ratio adjustment. Science 295, 1685–1688.
 
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<meta content="In sand lizards (Lacerta agilis), males with
more and brighter nuptial coloration also have
more DNA fragments visualized in restriction
fragment length polymorphism analysis of their
major histocompatibility complex class I loci
(and, hence, are probably more heterozygous at
these loci). Such males produce more viable
offspring, with a particularly strong viability
effect on daughters. This suggests that females
should adjust both their reproductive investment
and offspring sex ratio in relation to male
coloration (i.e. differential allocation). Our
results show that experimental manipulation of
partner coloration in the wild results in signifi-
cantly higher maternal effort and a 10% higher
proportion of daughters than sons. This supports
the hypothesis that females increase their
maternal energetic expenditure and adjust their
offspring sex ratio in response to high-quality
partners. However, it also suggests that this has
probably evolved through natural selection for
increased offspring viability (primarily through
production of daughters), rather than through
increased mate attraction (e.g. sexy sons).
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    <h1 class="ep_tm_pagetitle">Differential sex allocation in sand lizards: bright males induce daughter production in a species with heteromorphic sex chromosomes</h1>
    <p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Olsson, Mats</span> and <span class="person_name">Wapstra, Erik</span> and <span class="person_name">Uller, Tobias</span> (2005) <xhtml:em>Differential sex allocation in sand lizards: bright males induce daughter production in a species with heteromorphic sex chromosomes.</xhtml:em> Biology Letters, 1 . pp. 378-380. ISSN 1744-9561</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/2195/1/Differentialsexalloction.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/2195/1/Differentialsexalloction.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />80Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input accept-charset="utf-8" value="2779" 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/10.1098/rsbl.2005.0327">http://dx.doi.org/10.1098/rsbl.2005.0327</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">In sand lizards (Lacerta agilis), males with&#13;
more and brighter nuptial coloration also have&#13;
more DNA fragments visualized in restriction&#13;
fragment length polymorphism analysis of their&#13;
major histocompatibility complex class I loci&#13;
(and, hence, are probably more heterozygous at&#13;
these loci). Such males produce more viable&#13;
offspring, with a particularly strong viability&#13;
effect on daughters. This suggests that females&#13;
should adjust both their reproductive investment&#13;
and offspring sex ratio in relation to male&#13;
coloration (i.e. differential allocation). Our&#13;
results show that experimental manipulation of&#13;
partner coloration in the wild results in signifi-&#13;
cantly higher maternal effort and a 10% higher&#13;
proportion of daughters than sons. This supports&#13;
the hypothesis that females increase their&#13;
maternal energetic expenditure and adjust their&#13;
offspring sex ratio in response to high-quality&#13;
partners. However, it also suggests that this has&#13;
probably evolved through natural selection for&#13;
increased offspring viability (primarily through&#13;
production of daughters), rather than through&#13;
increased mate attraction (e.g. sexy sons).&#13;
</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">sex allocation; maternal allocation;&#13;
male attractiveness;&#13;
major histocompatibility complex;&#13;
heteromorphic sex chromosomes&#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/270205.html">270000 Biological Sciences &gt; 270200 Genetics &gt; 270205 Genetic Development (incl. Sex Determination)</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2195</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 14:01</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=2195;">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=2195">item control page</a></p>
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