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<DIV class=articleTitle><SPAN class=mainTitle>Journal of Fish
Biology</SPAN></DIV>
<DIV class=articleTitle><SPAN class=mainTitle>Article first published online: 22
JAN 2014</DIV>
<DIV id=doi>DOI: 10.1111/jfb.12293</DIV>
<DIV class=articleTitle></SPAN> </DIV>
<DIV class=articleTitle><SPAN class=mainTitle></SPAN> </DIV>
<DIV class=articleTitle><SPAN class=mainTitle><FONT size=5>Ontogenetic and
spatiotemporal variability in anchoveta <I>Engraulis ringens</I> diet off
Peru</FONT></SPAN></DIV>
<DIV id=jfb12293-cr-0001>P. Espinoza<SUP>1,*</SUP>, A.
Bertrand<SUP>2</SUP></DIV>
<DIV><SUP>1</SUP> Instituto del Mar del Perú, Esquina Gamarra y Gral. Valle s/n,
Apartado 22, Callao, Lima, Peru<SUP>2</SUP> Institut de Recherche pour le
Développement (IRD), UMR212 EME IFREMER/IRD/UM2, Avenue Jean Monnet, BP 171,
34203 Sète Cedex, France <SUP>*</SUP>Author to whom correspondence should be
addressed. Tel.: +51 1 6250800; email: <!--TODO: clickthrough URL--><A
title="Link to email address" href="mailto:pespinoza@imarpe.gob.pe"
shape=rect><FONT color=#007e8a>pespinoza@imarpe.gob.pe</FONT></A></DIV>
<P><STRONG>Abstract</STRONG></P>
<P>In this study, historical data available since 1954 were used to get new
insight to ontogenetic and spatiotemporal variability in Peruvian anchovy or
anchoveta <I>Engraulis ringens</I> diet. Whatever the period, <I>E. ringens</I>
foraged mainly on macrozooplankton and the importance of euphausiids in <I>E.
ringens</I> diet appears directly related to euphausiids abundance. This
bottom-up effect is also observed at smaller scale because the euphausiids
fraction increased with <I>E. ringens</I> total length and euphausiids
accessibility. Selecting the largest prey, the euphausiids, provides an
energetic advantage for <I>E. ringens</I> in its ecosystem where oxygen
depletion imposes strong metabolic constraints on pelagic fishes. This study
illustrates the plasticity of <I>E. ringens</I> that allows it to cope with its
highly variable environment.</P></FONT></BODY></HTML>