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<DIV class=articleTitle><SPAN class=mainTitle> </DIV>
<DIV id=productTitle>Marine Ecology</DIV>
<DIV class=articleDetails><A
href="http://onlinelibrary.wiley.com/doi/10.1111/mae.2012.33.issue-3/issuetoc"
shape=rect><FONT color=#000000><SPAN id=volumeNumber>Volume 33</SPAN>, <SPAN
id=issueNumber>Issue 3</SPAN>, </FONT></A><SPAN id=issuePages>pages
377–385</SPAN>, <SPAN id=issueDate>September 2012</SPAN></DIV>
<DIV class=articleTitle>Article first published online: 11 OCT 2011</DIV>
<DIV id=doi class=articleTitle>DOI: 10.1111/j.1439-0485.2011.00491.x</DIV>
<DIV class=articleTitle> </DIV></SPAN>
<DIV class=articleTitle><SPAN class=mainTitle><FONT size=4>A mass mortality of
subtropical intertidal populations of the sea urchin <EM>Paracentrotus
lividus</EM>: analysis of potential links with environmental
conditions</FONT></SPAN></DIV>
<DIV class=articleTitle><SPAN class=mainTitle></SPAN><FONT size=2>Dominique
Girard, </FONT><FONT size=2>Sabrina Clemente, </FONT><FONT size=2>Kilian
Toledo-Guedes, </FONT><FONT size=2>Alberto Brito, </FONT><FONT size=2>José
Carlos Hernández</FONT></DIV>
<DIV class=articleTitle>Biodiversidad, Ecología Marina y Conservación,
Departamento de Biología Animal (Ciencias Marinas), Facultad de Biología,
Universidad de La Laguna, La Laguna, Tenerife, Canary Islands,
Spain E-mail: <!--TODO: clickthrough URL--><A title="Link to email address"
href="mailto:dgirard@ull.es" shape=rect><FONT
color=#007e8a>dgirard@ull.es</FONT></A></DIV>
<DIV>
<H3>Abstract</H3>
<DIV class=para>
<P>An outbreak of bald sea urchin disease was detected affecting intertidal
populations of the edible temperate species <EM>Paracentrotus lividus</EM> at
its southernmost geographical limit. The mortality event was detected in three
sites (Güímar, Palmar and Alcalá) off Tenerife, Canary Islands (Northeastern
Atlantic), in October 2003, coinciding with the highest sea surface temperatures
(SST) and the lowest wave heights of the year. The prevalence of infection
reached 100% but did not affect equally all studied sites or the different size
classes. The disease was more prevalent in large sea urchins
(>40 mm). The prevalence appeared to be positively correlated with the
environmental variable SST and negatively correlated with wave height. In
October 2004, only two infected urchins were found (prevalence 1%) at one of the
studied sites. However, during 2004 no such extreme values of temperature and
wave height were observed. We conclude that high SSTs and low wave heights such
as those observed during 2003 are conditions that may trigger outbreaks of
urchin disease.</P></DIV></DIV></FONT><BR>
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