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<div class=Section1>

<p class=MsoNormal>Biological Journal of the Linnean Society<o:p></o:p></p>

<p class=MsoNormal style='outline: 0px'><b><span style='color:#007E8B'><a
href="http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1095-8312/earlyview"><span
style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#007E8A;
border:none windowtext 1.0pt;padding:0in'>Early View (Online Version of Record
published before inclusion in an issue)</span></a><o:p></o:p></span></b></p>

<p class=MsoNormal><span style='color:black'>Article first published online: 27
JUN 2015<o:p></o:p></span></p>

<p class=MsoNormal style='outline: 0px;word-wrap: break-word' id=doi><span
style='color:black'>DOI: 10.1111/bij.12614<o:p></o:p></span></p>

<h1 style='mso-margin-top-alt:0in;margin-right:24.0pt;margin-bottom:0in;
margin-left:0in;margin-bottom:.0001pt;mso-line-height-alt:7.5pt;vertical-align:
baseline'><span class=maintitle><span style='font-size:10.5pt;font-family:"Arial","sans-serif";
color:black;border:none windowtext 1.0pt;padding:0in'><o:p> </o:p></span></span></h1>

<h1 style='mso-margin-top-alt:0in;margin-right:24.0pt;margin-bottom:0in;
margin-left:0in;margin-bottom:.0001pt;mso-line-height-alt:7.5pt;vertical-align:
baseline'><span class=maintitle><span style='font-size:10.5pt;font-family:"Arial","sans-serif";
color:black;border:none windowtext 1.0pt;padding:0in'><o:p> </o:p></span></span></h1>

<h1 style='mso-margin-top-alt:0in;margin-right:24.0pt;margin-bottom:0in;
margin-left:0in;margin-bottom:.0001pt;mso-line-height-alt:7.5pt;vertical-align:
baseline'><span class=maintitle><span style='font-size:16.0pt;font-family:"Arial","sans-serif";
color:black;border:none windowtext 1.0pt;padding:0in'>Population genetic
analyses reveal distinct geographical blooms of the jellyfish</span></span><span
class=apple-converted-space><span style='font-size:16.0pt;font-family:"Arial","sans-serif";
color:black;border:none windowtext 1.0pt;padding:0in'> </span></span><em><span
style='font-size:16.0pt;font-family:"Arial","sans-serif";color:black;
border:none windowtext 1.0pt;padding:0in'>Rhizostoma octopus</span></em><span
class=apple-converted-space><span style='font-size:16.0pt;font-family:"Arial","sans-serif";
color:black;border:none windowtext 1.0pt;padding:0in'> </span></span><span
class=maintitle><span style='font-size:16.0pt;font-family:"Arial","sans-serif";
color:black;border:none windowtext 1.0pt;padding:0in'>(Scyphozoa)</span></span><span
style='font-size:16.0pt;font-family:"Arial","sans-serif";color:black'><o:p></o:p></span></h1>

<p class=MsoNormal style='mso-margin-top-alt:0in;margin-right:3.75pt;
margin-bottom:0in;margin-left:0in;margin-bottom:.0001pt;text-indent:-.25in;
line-height:18.0pt;mso-list:l2 level1 lfo1;vertical-align:baseline'><![if !supportLists]><span
style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black'><span
style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'>    
</span></span></span><![endif]><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:black'>Fergal Glynn</span><sup><span style='font-size:7.0pt;font-family:
"Arial","sans-serif";color:black;border:none windowtext 1.0pt;padding:0in'>1,2</span></sup><span
style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black'>,<span
class=apple-converted-space> </span>Jonathan D. R. Houghton</span><sup><span
style='font-size:7.0pt;font-family:"Arial","sans-serif";color:black;border:
none windowtext 1.0pt;padding:0in'>1,2,3</span></sup><span
class=apple-converted-space><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:black'> </span></span><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:black'>and Jim Provan</span><sup><span style='font-size:7.0pt;font-family:
"Arial","sans-serif";color:black;border:none windowtext 1.0pt;padding:0in'>1,2,*</span></sup><span
style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black'><o:p></o:p></span></p>

<p class=MsoNormal style='mso-line-height-alt:7.5pt;vertical-align:baseline;
outline: 0px' id=publishedOnlineDate><span class=affiliationnumber><span
style='font-size:8.0pt;font-family:"Arial","sans-serif";color:black;border:
none windowtext 1.0pt;padding:0in'>1 </span></span><span style='font-size:9.0pt;
font-family:"Arial","sans-serif";color:black'>School of Biological Sciences,
Queen's University Belfast, Belfast, UK </span><span class=affiliationnumber><span
style='font-size:8.0pt;font-family:"Arial","sans-serif";color:black;border:
none windowtext 1.0pt;padding:0in'>2 </span></span><span style='font-size:9.0pt;
font-family:"Arial","sans-serif";color:black'>Institute for Global Food
Security, Queen's University Belfast, Belfast, UK </span><span
class=affiliationnumber><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:black;border:none windowtext 1.0pt;padding:0in'>3 </span></span><span
style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black'>Queen's
Marine Laboratory, 12–13 The Strand, Portaferry, UK. <sup><span
style='border:none windowtext 1.0pt;padding:0in'>*</span></sup>Corresponding
author. E-mail:<span class=apple-converted-space> </span><a
href="mailto:j.provan@qub.ac.uk" title="Link to email address"><span
style='color:#007E8A;border:none windowtext 1.0pt;padding:0in'>j.provan@qub.ac.uk</span></a><o:p></o:p></span></p>

<p style='margin:0in;margin-bottom:.0001pt;line-height:15.6pt;vertical-align:
baseline'><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:black'><o:p> </o:p></span></p>

<form id=searchSite name=advancedSearchForm>

<p class=MsoNormal style='mso-margin-top-alt:0in;margin-right:6.0pt;margin-bottom:
0in;margin-left:0in;margin-bottom:.0001pt;text-indent:-.25in;mso-line-height-alt:
7.5pt;mso-list:l1 level1 lfo5;background:#007E8B;vertical-align:baseline'><![if !supportLists]><span
style='font-size:10.0pt;font-family:Symbol;color:#757373'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>        
</span></span></span><![endif]><b><span style='font-size:14.0pt;font-family:
"Arial","sans-serif";color:white;border:none windowtext 1.0pt;padding:0in'>Abstract</span></b><b><span
style='font-size:14.0pt;font-family:"Arial","sans-serif";color:#757373'><o:p></o:p></span></b></p>

<p style='margin:0in;margin-bottom:.0001pt;line-height:18.0pt;vertical-align:
baseline'><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:black'>Understanding the spatial integrity and connectivity of jellyfish
blooms is important for ecologists and coastal stakeholders alike. Previous
studies have shown that the distribution of jellyfish blooms can display a
marked consistency in space and time, suggesting that such patterns cannot be
attributed to passive processes alone. In the present study, we used a
combination of microsatellite markers and mitochondrial cytochrome oxidase I
sequences to investigate genetic structuring of the scyphozoan jellyfish</span><span
class=apple-converted-space><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:black'> </span></span><em><span style='font-size:9.0pt;font-family:
"Arial","sans-serif";color:black;border:none windowtext 1.0pt;padding:0in'>Rhizostoma
octopus</span></em><span class=apple-converted-space><span style='font-size:
9.0pt;font-family:"Arial","sans-serif";color:black'> </span></span><span
style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black'>in the
Irish and Celtic Seas. The mitochondrial data indicated far higher levels of
population differentiation than the microsatellites: Ö</span><sub><span
style='font-size:7.0pt;font-family:"Arial","sans-serif";color:black;border:
none windowtext 1.0pt;padding:0in'>ST[MT]</span></sub><em><span
style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black;border:
none windowtext 1.0pt;padding:0in'> </span></em><span style='font-size:
9.0pt;font-family:"Arial","sans-serif";color:black'>= 0.300 vs. Ö</span><sub><span
style='font-size:7.0pt;font-family:"Arial","sans-serif";color:black;border:
none windowtext 1.0pt;padding:0in'>ST[NUC]</span></sub><em><span
style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black;border:
none windowtext 1.0pt;padding:0in'> </span></em><span style='font-size:
9.0pt;font-family:"Arial","sans-serif";color:black'>= 0.013. Simulation
studies indicated that the low levels of nuclear differentiation were not the
result of limited power because of low levels of polymorphism. These findings,
supported by palaeodistribution modelling and mismatch distribution analysis,
are consistent with expansion of</span><span class=apple-converted-space><span
style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black'> </span></span><em><span
style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black;border:
none windowtext 1.0pt;padding:0in'>R. octopus</span></em><span
class=apple-converted-space><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:black'> </span></span><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:black'>from a single, limited refugium after the Last Glacial Maximum,
followed by subsequent isolation, and that the discrepancy between the
mitochondrial and nuclear markers is a result of the nuclear loci taking longer
to reach mutation–drift equilibrium following the expansion as a result
of their four-fold larger effective population size. The populations studied
are probably not well connected via gene flow, and thus genetically as well as
geographically distinct, although our findings also highlight the need to use a
combination of organellar and nuclear markers to enable a more complete
understanding of population demography and structure, particularly for species
with large effective population sizes.<o:p></o:p></span></p>

<p class=MsoNormal><o:p> </o:p></p>

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