<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Gómez-Díaz,Elena</style></author><author><style face="normal" font="default" size="100%">González-Solís,J.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Trophic Structure in a Seabird Host-Parasite Food Web: Insights from Stable Isotope Analyses</style></title><secondary-title><style face="normal" font="default" size="100%">PLoS ONE</style></secondary-title><short-title><style face="normal" font="default" size="100%">PLoS ONE</style></short-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Apr-05-2010</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://dx.plos.org/10.1371/journal.pone.0010454</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">5</style></volume><pages><style face="normal" font="default" size="100%">7pp</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Ecological&amp;nbsp; studies&amp;nbsp; on&amp;nbsp; food&amp;nbsp; webs&amp;nbsp; rarely&amp;nbsp; include&amp;nbsp; parasites,&amp;nbsp; partly&amp;nbsp; due&amp;nbsp; to&amp;nbsp; the&amp;nbsp; complexity&amp;nbsp; and&amp;nbsp; dimensionality&amp;nbsp; of&amp;nbsp; host-parasiteinteraction&amp;nbsp; networks.&amp;nbsp; Multiple&amp;nbsp; co-occurring&amp;nbsp; parasites&amp;nbsp; can&amp;nbsp; show&amp;nbsp; different&amp;nbsp; feeding&amp;nbsp; strategies&amp;nbsp; and&amp;nbsp; thus&amp;nbsp; lead&amp;nbsp; to&amp;nbsp; complex&amp;nbsp; andcryptic&amp;nbsp; trophic&amp;nbsp; relationships,&amp;nbsp; which&amp;nbsp; are&amp;nbsp; often&amp;nbsp; difficult&amp;nbsp; to&amp;nbsp; disentangle&amp;nbsp; by&amp;nbsp; traditional&amp;nbsp; methods.&amp;nbsp; We&amp;nbsp; analyzed&amp;nbsp; stable&amp;nbsp; isotoperatios&amp;nbsp; of&amp;nbsp; C&amp;nbsp; (13C/12C,d13C)&amp;nbsp; and&amp;nbsp; N&amp;nbsp; (15N/14N,d15N)&amp;nbsp; of&amp;nbsp; host&amp;nbsp; and&amp;nbsp; ectoparasite&amp;nbsp; tissues&amp;nbsp; to&amp;nbsp; investigate&amp;nbsp; trophic&amp;nbsp; structure&amp;nbsp; in&amp;nbsp; 4&amp;nbsp; co-occurring&amp;nbsp; ectoparasites:&amp;nbsp; three&amp;nbsp; lice&amp;nbsp; and&amp;nbsp; one&amp;nbsp; flea&amp;nbsp; species,&amp;nbsp; on&amp;nbsp; two&amp;nbsp; closely&amp;nbsp; related&amp;nbsp; and&amp;nbsp; spatially&amp;nbsp; segregated&amp;nbsp; seabird&amp;nbsp; hosts(Calonectrisshearwaters).d13C&amp;nbsp; isotopic&amp;nbsp; signatures&amp;nbsp; confirmed&amp;nbsp; feathers&amp;nbsp; as&amp;nbsp; the&amp;nbsp; main&amp;nbsp; food&amp;nbsp; resource&amp;nbsp; for&amp;nbsp; the&amp;nbsp; three&amp;nbsp; lice&amp;nbsp; speciesand blood for the flea species. All ectoparasite species showed a significant enrichment ind15N relatively to the host tissueconsumed&amp;nbsp; (discrimination&amp;nbsp; factors&amp;nbsp; ranged&amp;nbsp; from&amp;nbsp; 2&amp;nbsp; to&amp;nbsp; 5%depending&amp;nbsp; on&amp;nbsp; the&amp;nbsp; species).&amp;nbsp; Isotopic&amp;nbsp; differences&amp;nbsp; were&amp;nbsp; consistentacross&amp;nbsp; multiple&amp;nbsp; host-ectoparasite&amp;nbsp; locations,&amp;nbsp; despite&amp;nbsp; of&amp;nbsp; some&amp;nbsp; geographic&amp;nbsp; variability&amp;nbsp; in&amp;nbsp; baseline&amp;nbsp; isotopic&amp;nbsp; levels. Our&amp;nbsp; findingsillustrate&amp;nbsp;&amp;nbsp; the&amp;nbsp;&amp;nbsp; influence&amp;nbsp;&amp;nbsp; of&amp;nbsp;&amp;nbsp; both&amp;nbsp;&amp;nbsp; ectoparasite&amp;nbsp;&amp;nbsp; and&amp;nbsp;&amp;nbsp; host&amp;nbsp;&amp;nbsp; trophic&amp;nbsp;&amp;nbsp; ecology&amp;nbsp;&amp;nbsp; in&amp;nbsp;&amp;nbsp; the&amp;nbsp;&amp;nbsp; isotopic&amp;nbsp;&amp;nbsp; structuring&amp;nbsp;&amp;nbsp; of&amp;nbsp;&amp;nbsp; theCalonectrisectoparasite&amp;nbsp; community.&amp;nbsp; This&amp;nbsp; study&amp;nbsp; highlights&amp;nbsp; the&amp;nbsp; potential&amp;nbsp; of&amp;nbsp; stable&amp;nbsp; isotope&amp;nbsp; analyses&amp;nbsp; in&amp;nbsp; disentangling&amp;nbsp; the&amp;nbsp; nature&amp;nbsp; andcomplexity&amp;nbsp; of&amp;nbsp; trophic&amp;nbsp; relationships&amp;nbsp; in&amp;nbsp; symbiotic&amp;nbsp; systems.&lt;/p&gt;
</style></abstract><issue><style face="normal" font="default" size="100%">5</style></issue><work-type><style face="normal" font="default" size="100%">Open access e10454</style></work-type></record></records></xml>