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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">A new navigational mechanism mediated by ant ocelli</title><author><name sortKey="Schwarz, Sebastian" sort="Schwarz, Sebastian" uniqKey="Schwarz S" first="Sebastian" last="Schwarz">Sebastian Schwarz</name><affiliation><nlm:aff id="af1"><addr-line>Department of Biological Sciences</addr-line>,<institution>Macquarie University</institution>,<addr-line>Sydney</addr-line>,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Wystrach, Antoine" sort="Wystrach, Antoine" uniqKey="Wystrach A" first="Antoine" last="Wystrach">Antoine Wystrach</name><affiliation><nlm:aff id="af1"><addr-line>Department of Biological Sciences</addr-line>,<institution>Macquarie University</institution>,<addr-line>Sydney</addr-line>,<country>Australia</country></nlm:aff></affiliation><affiliation><nlm:aff id="af2"><addr-line>CRCA</addr-line>,<institution>Université Paul Sabatier</institution>,<addr-line>Toulouse</addr-line>,<country>France</country></nlm:aff></affiliation></author><author><name sortKey="Cheng, Ken" sort="Cheng, Ken" uniqKey="Cheng K" first="Ken" last="Cheng">Ken Cheng</name><affiliation><nlm:aff id="af1"><addr-line>Department of Biological Sciences</addr-line>,<institution>Macquarie University</institution>,<addr-line>Sydney</addr-line>,<country>Australia</country></nlm:aff></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">21733873</idno><idno type="pmc">3210681</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3210681</idno><idno type="RBID">PMC:3210681</idno><idno type="doi">10.1098/rsbl.2011.0489</idno><date when="2011">2011</date><idno type="wicri:Area/Pmc/Corpus">001778</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">001778</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">A new navigational mechanism mediated by ant ocelli</title><author><name sortKey="Schwarz, Sebastian" sort="Schwarz, Sebastian" uniqKey="Schwarz S" first="Sebastian" last="Schwarz">Sebastian Schwarz</name><affiliation><nlm:aff id="af1"><addr-line>Department of Biological Sciences</addr-line>,<institution>Macquarie University</institution>,<addr-line>Sydney</addr-line>,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Wystrach, Antoine" sort="Wystrach, Antoine" uniqKey="Wystrach A" first="Antoine" last="Wystrach">Antoine Wystrach</name><affiliation><nlm:aff id="af1"><addr-line>Department of Biological Sciences</addr-line>,<institution>Macquarie University</institution>,<addr-line>Sydney</addr-line>,<country>Australia</country></nlm:aff></affiliation><affiliation><nlm:aff id="af2"><addr-line>CRCA</addr-line>,<institution>Université Paul Sabatier</institution>,<addr-line>Toulouse</addr-line>,<country>France</country></nlm:aff></affiliation></author><author><name sortKey="Cheng, Ken" sort="Cheng, Ken" uniqKey="Cheng K" first="Ken" last="Cheng">Ken Cheng</name><affiliation><nlm:aff id="af1"><addr-line>Department of Biological Sciences</addr-line>,<institution>Macquarie University</institution>,<addr-line>Sydney</addr-line>,<country>Australia</country></nlm:aff></affiliation></author></analytic><series><title level="j">Biology Letters</title><idno type="ISSN">1744-9561</idno><idno type="eISSN">1744-957X</idno><imprint><date when="2011">2011</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>Many animals rely on path integration for navigation and desert ants are the champions. On leaving the nest, ants continuously integrate their distance and direction of travel so that they always know their current distance and direction from the nest and can take a direct path to home. Distance information originates from a step-counter and directional information is based on a celestial compass. So far, it has been assumed that the directional information obtained from ocelli contribute to a single global path integrator, together with directional information from the dorsal rim area (DRA) of the compound eyes and distance information from the step-counter. Here, we show that ocelli mediate a distinct compass from that mediated by the compound eyes. After travelling a two-leg outbound route, untreated foragers headed towards the nest direction, showing that both legs of the route had been integrated. In contrast, foragers with covered compound eyes but uncovered ocelli steered in the direction opposite to the last leg of the outbound route. Our findings suggest that, unlike the DRA, ocelli cannot by themselves mediate path integration. Instead, ocelli mediate a distinct directional system, which buffers the most recent leg of a journey.</p></div></front></TEI><pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<front><journal-meta><journal-id journal-id-type="nlm-ta">Biol Lett</journal-id><journal-id journal-id-type="publisher-id">RSBL</journal-id><journal-id journal-id-type="hwp">roybiolett</journal-id><journal-title-group><journal-title>Biology Letters</journal-title></journal-title-group><issn pub-type="ppub">1744-9561</issn><issn pub-type="epub">1744-957X</issn><publisher><publisher-name>The Royal Society</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">21733873</article-id><article-id pub-id-type="pmc">3210681</article-id><article-id pub-id-type="doi">10.1098/rsbl.2011.0489</article-id><article-id pub-id-type="publisher-id">rsbl20110489</article-id><article-categories><subj-group subj-group-type="hwp-journal-coll"><subject>1001</subject><subject>14</subject><subject>424</subject><subject>133</subject><subject>70</subject></subj-group><subj-group subj-group-type="heading"><subject>Animal Behaviour</subject></subj-group></article-categories><title-group><article-title>A new navigational mechanism mediated by ant ocelli</article-title><alt-title alt-title-type="short">Ocelli navigation in ants</alt-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Schwarz</surname><given-names>Sebastian</given-names></name><xref ref-type="aff" rid="af1">1</xref><xref ref-type="corresp" rid="cor1">*</xref><xref ref-type="author-notes" rid="AN1">†</xref></contrib><contrib contrib-type="author"><name><surname>Wystrach</surname><given-names>Antoine</given-names></name><xref ref-type="aff" rid="af1">1</xref><xref ref-type="aff" rid="af2">2</xref><xref ref-type="author-notes" rid="AN1">†</xref></contrib><contrib contrib-type="author"><name><surname>Cheng</surname><given-names>Ken</given-names></name><xref ref-type="aff" rid="af1">1</xref></contrib></contrib-group><aff id="af1"><label>1</label><addr-line>Department of Biological Sciences</addr-line>,<institution>Macquarie University</institution>,<addr-line>Sydney</addr-line>,<country>Australia</country></aff><aff id="af2"><label>2</label><addr-line>CRCA</addr-line>,<institution>Université Paul Sabatier</institution>,<addr-line>Toulouse</addr-line>,<country>France</country></aff><author-notes><corresp id="cor1"><label>*</label>Author for correspondence (<email>sebastian.schwarz@mq.edu.au</email>).</corresp><fn fn-type="con" id="AN1"><label>†</label><p>These authors contributed equally to the study.</p></fn></author-notes><pub-date pub-type="ppub"><day>23</day><month>12</month><year>2011</year></pub-date><pub-date pub-type="epub"><day>6</day><month>7</month><year>2011</year></pub-date><volume>7</volume><issue>6</issue><fpage>856</fpage><lpage>858</lpage><history><date date-type="received"><day>9</day><month>5</month><year>2011</year></date><date date-type="accepted"><day>15</day><month>6</month><year>2011</year></date></history><permissions><copyright-statement>This journal is © 2011 The Royal Society</copyright-statement><copyright-year>2011</copyright-year></permissions><self-uri content-type="pdf" xlink:type="simple" xlink:href="rsbl20110489.pdf"></self-uri><abstract><p>Many animals rely on path integration for navigation and desert ants are the champions. On leaving the nest, ants continuously integrate their distance and direction of travel so that they always know their current distance and direction from the nest and can take a direct path to home. Distance information originates from a step-counter and directional information is based on a celestial compass. So far, it has been assumed that the directional information obtained from ocelli contribute to a single global path integrator, together with directional information from the dorsal rim area (DRA) of the compound eyes and distance information from the step-counter. Here, we show that ocelli mediate a distinct compass from that mediated by the compound eyes. After travelling a two-leg outbound route, untreated foragers headed towards the nest direction, showing that both legs of the route had been integrated. In contrast, foragers with covered compound eyes but uncovered ocelli steered in the direction opposite to the last leg of the outbound route. Our findings suggest that, unlike the DRA, ocelli cannot by themselves mediate path integration. Instead, ocelli mediate a distinct directional system, which buffers the most recent leg of a journey.</p></abstract><kwd-group><kwd>ocelli</kwd><kwd>ants</kwd><kwd>navigation</kwd><kwd>path integration</kwd><kwd>compound eyes</kwd><kwd><italic>Melophorus bagoti</italic></kwd></kwd-group></article-meta></front></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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