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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>David Bunnell</dc:contributor>
  <dc:contributor>David M. Warner</dc:contributor>
  <dc:creator>Patricia M Dieter</dc:creator>
  <dc:date>2022</dc:date>
  <dc:description>&lt;p&gt;&lt;span&gt;Predators can shift their diets and even selectivity in response to changing environmental conditions. Since the early 2000s, Lake Huron experienced major food-web shifts that have caused changes in the prey availability and quality for consumers at multiple&amp;nbsp;trophic levels. Previous studies have reported declining energetic condition for key planktivorous fishes, such as bloater (&lt;/span&gt;&lt;span&gt;&lt;i&gt;Coregonus&lt;/i&gt;&lt;i&gt;&amp;nbsp;hoyi&lt;/i&gt;&lt;/span&gt;&lt;span&gt;) and rainbow smelt (&lt;/span&gt;&lt;span&gt;&lt;i&gt;Osmerus mordax&lt;/i&gt;&lt;/span&gt;&lt;span&gt;), which play a key role in supporting commercially and recreationally important piscivorous fishes. To improve understanding of how changes in the invertebrate prey community have influenced foraging by rainbow smelt and bloater, we processed diets and calculated selectivity along two transects in Lake Huron during 2012. Diet proportions for both species varied seasonally and consisted of mostly calanoid copepods during spring and summer, specifically&amp;nbsp;&lt;/span&gt;&lt;i&gt;Leptodiaptomus sicilis&lt;/i&gt;&lt;span&gt;&amp;nbsp;and diaptomid copepodites, and&amp;nbsp;&lt;/span&gt;&lt;span&gt;&lt;i&gt;Daphnia galeata&lt;/i&gt;&lt;i&gt;&amp;nbsp;mendotae&lt;/i&gt;&lt;/span&gt;&lt;span&gt;&amp;nbsp;in autumn. Bloater selectivity varied primarily by season and transect with&amp;nbsp;&lt;/span&gt;&lt;i&gt;Limnocalanus macrurus&lt;/i&gt;&lt;span&gt;&amp;nbsp;or&amp;nbsp;&lt;/span&gt;&lt;span&gt;&lt;i&gt;Mysis&lt;/i&gt;&lt;i&gt;&amp;nbsp;diluviana&lt;/i&gt;&lt;/span&gt;&lt;span&gt;&amp;nbsp;as the most preferred prey during spring,&amp;nbsp;Chironomidae&amp;nbsp;pupae&amp;nbsp;or L.&amp;nbsp;&lt;/span&gt;&lt;i&gt;sicilis&lt;/i&gt;&lt;span&gt;&amp;nbsp;during summer, and Chironomidae pupae or&amp;nbsp;&lt;/span&gt;&lt;i&gt;Mysis&lt;/i&gt;&lt;span&gt;&amp;nbsp;during autumn. Rainbow smelt selectivity was consistent across seasons and transects with&amp;nbsp;&lt;/span&gt;&lt;i&gt;Mysis&lt;/i&gt;&lt;span&gt;&amp;nbsp;being the species most commonly selected and&amp;nbsp;&lt;/span&gt;&lt;span&gt;&lt;i&gt;Bythotrephes longimanus&lt;/i&gt;&lt;/span&gt;&lt;span&gt;&amp;nbsp;the second most. Both fish species selected for relatively large invertebrate prey, but declining densities of&amp;nbsp;&lt;/span&gt;&lt;i&gt;Mysis&lt;/i&gt;&lt;span&gt;&amp;nbsp;and the benthic amphipod&amp;nbsp;&lt;/span&gt;&lt;i&gt;Diporeia&lt;/i&gt;&lt;span&gt;&amp;nbsp;have caused fish to consume smaller prey with much lower energy density. Our results illustrate how food-web changes underlie the reduced energetic condition of bloater and rainbow smelt, which ultimately reduces the growth potential for recreationally and commercially important piscivorous fish.&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1016/j.fooweb.2021.e00215</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Elsevier</dc:publisher>
  <dc:title>Seasonal variability of invertebrate prey diet and selectivity of the dominant forage fishes in Lake Huron</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>