<?xml version='1.0' encoding='utf-8'?>
<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>Daniel D. Magoulick</dc:contributor>
  <dc:creator>Scott Longing</dc:creator>
  <dc:date>2023</dc:date>
  <dc:description>&lt;p&gt;&lt;span&gt;The ability to colonize new habitat is essential for wild populations affected by disturbance or other forms of habitat change. For aquatic insects in small streams, overland flight is an important strategy for dispersal when barriers to in-stream migration exist and when populations are isolated in upland habitats. Two Ozark-endemic water beetles (&lt;/span&gt;&lt;i&gt;&lt;span class="html-italic"&gt;Heterosternuta sulphuria&lt;/span&gt;&lt;/i&gt;&lt;span&gt;&amp;nbsp;and&amp;nbsp;&lt;/span&gt;&lt;i&gt;&lt;span class="html-italic"&gt;Heterosternuta phoebeae&lt;/span&gt;&lt;/i&gt;&lt;span&gt;) have shown little overlap in distributions, with the former frequently occurring in small upland watersheds and the latter occurring in aquatic habitats farther downstream in larger watersheds. Because&amp;nbsp;&lt;/span&gt;&lt;i&gt;&lt;span class="html-italic"&gt;H. sulphuria&lt;/span&gt;&lt;/i&gt;&lt;span&gt;&amp;nbsp;has been associated with perennial aquatic habitats, we hypothesized that&amp;nbsp;&lt;/span&gt;&lt;i&gt;&lt;span class="html-italic"&gt;H. sulphuria&lt;/span&gt;&lt;/i&gt;&lt;span&gt;&amp;nbsp;individuals could exhibit low capacity for flight, thereby affecting population distributions over time. Laboratory flight observations showed that zero individuals of&amp;nbsp;&lt;/span&gt;&lt;i&gt;&lt;span class="html-italic"&gt;H. sulphuria&lt;/span&gt;&lt;/i&gt;&lt;span&gt;&amp;nbsp;flew (&lt;/span&gt;&lt;span class="html-italic"&gt;n&lt;/span&gt;&lt;span&gt;&amp;nbsp;= 67), whereas 17 of 76 individuals of&amp;nbsp;&lt;/span&gt;&lt;i&gt;&lt;span class="html-italic"&gt;H. phoebeae&lt;/span&gt;&lt;/i&gt;&lt;span&gt;&amp;nbsp;were observed to fly. Stream habitat drying experiments provided further evidence of the weak capacity for flight and overland migration of&amp;nbsp;&lt;/span&gt;&lt;i&gt;&lt;span class="html-italic"&gt;H. sulphuria&lt;/span&gt;&lt;/i&gt;&lt;span&gt;, with low probabilities of survivorship in microhabitats exposed to drying. Weak flight capacity and apparent intolerance to habitat drying have important implications for the evolutionary history and conservation of&amp;nbsp;&lt;/span&gt;&lt;i&gt;&lt;span class="html-italic"&gt;H. sulphuria&lt;/span&gt;&lt;/i&gt;&lt;span&gt;&amp;nbsp;in small Ozark streams exposed to variable flow regimes and stream margins vulnerable to disturbances.&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.3390/hydrobiology2020023</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>MDPI</dc:publisher>
  <dc:title>Flight capacity and response to habitat drying of endemic diving beetles (Coleoptera: Dytiscidae) in Arkansas (USA)</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>