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<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:contributor>Istvan Imre</dc:contributor>
  <dc:contributor>C. Michael Wagner</dc:contributor>
  <dc:contributor>Richard T. Di Rocco</dc:contributor>
  <dc:contributor>Nicholas S. Johnson</dc:contributor>
  <dc:contributor>Grant E. Brown</dc:contributor>
  <dc:creator>Matthew Barnett</dc:creator>
  <dc:date>2016</dc:date>
  <dc:description>&lt;p&gt;&lt;span&gt;Sea lampreys (&lt;/span&gt;&lt;i&gt;Petromyzon marinus&lt;/i&gt;&lt;span&gt;&amp;nbsp;L., 1758) are nocturnal, so experiments evaluating their behaviour to chemosensory cues have typically been conducted at night. However, given the brief timeframe each year that adult&amp;nbsp;&lt;/span&gt;&lt;i&gt;P. marinus&lt;/i&gt;&lt;span&gt;&amp;nbsp;are available for experimentation, we investigated whether&amp;nbsp;&lt;/span&gt;&lt;i&gt;P. marinus&lt;/i&gt;&lt;span&gt;&amp;nbsp;exposed to a 12 h shifted diurnal cycle (reversed photoperiod) could be tested in a darkened arena during the day and show the same response to chemosensory cues as natural photoperiod&amp;nbsp;&lt;/span&gt;&lt;i&gt;P. marinus&lt;/i&gt;&lt;span&gt;&amp;nbsp;that were tested during the night. Ten replicates of 10&amp;nbsp;&lt;/span&gt;&lt;i&gt;P. marinus&lt;/i&gt;&lt;span&gt;, from each photoperiod, were exposed to deionized water (negative control), 2-phenylethylamine hydrochloride (PEA HCl, putative predator cue), or&amp;nbsp;&lt;/span&gt;&lt;i&gt;P. marinus&lt;/i&gt;&lt;span&gt;&amp;nbsp;whole-body extract (conspecific alarm cue). All&amp;nbsp;&lt;/span&gt;&lt;i&gt;P. marinus&lt;/i&gt;&lt;span&gt;&amp;nbsp;demonstrated a significant avoidance response to both cues. No significant differences were found in avoidance to PEA HCl between photoperiods. Avoidance of&amp;nbsp;&lt;/span&gt;&lt;i&gt;P. marinus&lt;/i&gt;&lt;span&gt;&amp;nbsp;whole-body extract was significantly stronger in natural compared with reversed photoperiod&amp;nbsp;&lt;/span&gt;&lt;i&gt;P. marinus&lt;/i&gt;&lt;span&gt;. The use of reversed photoperiod subjects is suitable for examining the presence or absence of avoidance in response to novel chemosensory alarm cues, or the change in the magnitude of antipredator response. Studies investigating the natural magnitude of antipredator response should use natural photoperiod experimental subjects.&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1139/cjz-2015-0254</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>NRC Research Press</dc:publisher>
  <dc:title>Evaluating potential artefacts of photo-reversal on behavioral studies with nocturnal invasive sea lamprey (&lt;i&gt;Petromyzon marinus&lt;i&gt;)</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>