https://cpw.cvlcollections.org/files/original/4d10888a3b9372d59f08df14748119ed.jpg b8efea80aa456549773782468b342ebf https://cpw.cvlcollections.org/files/original/0c3c5b18856393ddd9c710c6e22deae7.jpg 30f6a11463c7b4b2c10720184895a56a Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Aquatics Research Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Understanding and Managing Gill Lice Infections in Reservoir Sport Fish Description An account of the resource <p><strong>Led By</strong></p> <p>Lake and Reservoir Researchers</p> <p><strong>Study Area</strong></p> <p>Select reservoirs</p> <p><strong>Project Status</strong></p> <p>Ongoing</p> <p><strong>Research Objectives</strong></p> <ul> <li>Monitor gill lice infection prevalence and intensity on kokanee salmon and rainbow trout populations in key reservoirs in relation to environmental conditions to identify factors contributing to high parasite burdens and potential mitigation strategies.</li> </ul> <p><strong>Project Description</strong></p> <p>Gill lice, parasitic copepods (group of small crustaceans), can infect cutthroat trout, kokanee salmon and rainbow trout, which are ecologically and economically important fish species in Colorado. Gill lice are very host-specific, and thus far, only one species of gill lice (<em>Salmincola californiensis</em>) has been identified in Colorado.​</p> <p>Gill lice attach to and damage the gills of host fish, interfering with oxygen exchange. As a result, infections can negatively affect fish behavior, immune system function, growth, warm water tolerance and survival.</p> <p>Fisheries managers are concerned about gill lice in Colorado because the parasite is resistant to chemical treatments and very difficult to control. Further, very little research has been conducted on gill lice, making management challenging.​</p> <p>Lake and Reservoir Researchers have been monitoring gill lice infestations within kokanee and rainbow trout populations in select reservoirs to better understand how different factors such as the density of vulnerable fish, environmental conditions, and water level fluctuations interact to influence parasite burdens.</p> <p>With a greater understanding of gill lice dynamics, we may be able to identify management strategies that effectively limit infection prevalence and intensity.</p> <p><strong>Associated Publications</strong></p> <p>Hargis, L.N., <strong>J.M. Lepak</strong>, E.M. Vigil, and C. Gunn. 2014. <a href="https://doi.org/10.1894/N06-JC-72.1">Prevalence and intensity of the parasitic copepod (<em>Salmincola californiensis</em>) on kokanee salmon (<em>Oncorhynchus nerka</em>) in a Colorado reservoir</a>. Southwestern Naturalist 59:126-129.</p> <p><strong>Lepak, J.M.</strong>, <strong>A.G. Hansen</strong>, M.B. Hooten, D. Brauch, and E.M. Vigil. 2022. <a href="https://doi.org/10.1111/jfd.13539">Rapid proliferation of the parasitic copepod <em>Salmincola californiensis</em> (Dana) on kokanee salmon, <em>Oncorhynchus nerka</em> (Walbaum), in a large Colorado reservoir.</a> Journal of Fish Diseases 45:89-98 (<strong>Cover image and story for journal issue</strong>).</p> <p>Vigil, E.M., K.R. Christianson, <strong>J.M. Lepak</strong>, and P.J. Williams. 2016. <a href="https://doi.org/10.1111/jfd.12422">Temperature effects on hatching and viability of juvenile gill lice,</a> <em>Salmincola californiensis</em>. Journal of Fish Diseases 39:899-905.</p> Creator An entity primarily responsible for making the resource <a href="https://cpw.cvlcollections.org/items/show/482">Lake and Reservoir Researchers</a> Rights Information about rights held in and over the resource <a href="http://rightsstatements.org/vocab/NoC-NC/1.0/">No Copyright - Non-Commercial Use Only</a>