Simon R M Jones
Caitlin A E McKinstry
William N. Batts
Paul Hershberger
James P Losee
2020
<p><span>Coastal cutthroat trout [</span><i>Oncorhynchus clarkii clarkii</i><span> (Richardson, 1836)] from the marine waters of Puget Sound, WA, was documented as a new host for the ectoparasite </span><i>Argulus pugettensis</i><span> (</span>Dana, 1852<span>). The prevalence of </span><i>A. pugettensis</i><span> was 66% (49 of 74) on cutthroat trout and 0% (0 of 55) on coho salmon [</span><i>O. kisutch</i><span> (Walbaum, 1792)] collected during the winter of 2017/2018. Infestations occurred most frequently on the dorsal surface, with intensities ranging from 1 to 26 argulids per fish (mean intensity 3.94 ± 4.93 S.D.). In contrast, the prevalence of the common salmon louse [</span><i>Lepeophtheirus salmonis</i><span> (Krøyer, 1837)] was 72% for cutthroat trout and 31% for coho salmon. Relative to other native salmonids, little is known regarding the status, ecology and threats for coastal cutthroat trout. New information reported here is a first step in understanding the relationship between this wild, native trout and infestations by parasitic sea lice and should be followed by future studies aimed to identify population level consequences.</span></p>
application/pdf
10.3955/046.094.0202
en
BioOne
Anadromous coastal cutthroat trout Oncorhynchus clarkii clarkii as a host for Argulus pugettensis (Crustacea, Branchiura): Parasite prevalence, intensity and distribution
article