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1 March 2008 The Case for Humboldtensis: A Subspecies Name for the Indigenous Cutthroat Trout (Oncorhynchus clarkii) of the Humboldt River, Upper Quinn River, and Coyote Basin Drainages, Nevada and Oregon
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Abstract

In the early years of his research on the native trouts of western North America, Behnke (1960, 1966, 1979) observed consistent differences in certain meristic characters between the cutthroat trout of the Humboldt River drainage and those from the Truckee, Carson, and Walker river drainages of the Lahontan Basin, and proposed that the Humboldt trout be recognized as a distinct subspecies. He coined the subspecies name humboldtensis, but a formal description was never published. Here we again present the early evidence for subspecific distinction of the Humboldt drainage cutthroat trout, and add more recent findings from the fields of population genetics and Pleistocene and recent zoogeography that support this interpretation. Based on this evidence, we offer a formal description of the cutthroat subspecies Oncorhynchus clarkii humboldtensis and map its likely historical distribution. Available meristic and zoogeographic evidence indicates that the native trouts of the upper Quinn River, Nevada and Oregon and the Coyote Basin of Oregon should be included with humboldtensis as well.

Patrick C. Trotter and Robert J. Behnke "The Case for Humboldtensis: A Subspecies Name for the Indigenous Cutthroat Trout (Oncorhynchus clarkii) of the Humboldt River, Upper Quinn River, and Coyote Basin Drainages, Nevada and Oregon," Western North American Naturalist 68(1), (1 March 2008). https://doi.org/10.3398/1527-0904(2008)68[58:TCFHAS]2.0.CO;2
Received: 29 May 2007; Accepted: 1 October 2007; Published: 1 March 2008
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