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- Title
Swimming performance of least chub (Iotichthys phlegethontis) and June sucker (Chasmistes liorus): endemic and threatened fishes of Utah, USA.
- Authors
SUCHOMEL, ANDREW D.; BELK, MARK C.
- Abstract
Least chub (Iotichthys phlegethontis) and June sucker (Chasmistes liorus) are 2 species of conservation concern that are endemic to Utah, USA. Both species have experienced severe population decline, and conservation actions to bolster populations include habitat restoration and improvement. Critical to these habitat restoration projects is an understanding of swimming performance and capabilities for both species. We quantified swim speed performance (i.e., burst speed and prolonged speed) of least chub and June suckers. Least chub are small-bodied fish that occupy still or slow-moving water habitats with few predators. Accordingly, both burst speed and prolonged swim speed in least chub are comparatively low, although they do increase somewhat with increasing body size. June suckers are comparatively large-bodied lake suckers that inhabit Utah Lake, but as adults they ascend the Provo River and other tributaries to spawn. June suckers exhibit relatively low prolonged speed, but substantially higher burst speed, and both swim speeds increase with body size. Because of the difference in size, June suckers have a much broader range of swim speed capacity than least chub and are overall more similar to other species of fish native to the intermountain western United States (i.e., Rhinichthys osculus, Richardsonius balteatus, and Oncoryhnchus clarkii). Our results can inform habitat restoration plans, which should be designed to match swimming performance of these 2 species.
- Subjects
UTAH; PROVO (Utah); RARE fishes; ENDEMIC fishes; SWIMMING; WILDLIFE conservation; BODY size
- Publication
Western North American Naturalist, 2023, Vol 83, Issue 4, p569
- ISSN
1527-0904
- Publication type
Article
- DOI
10.3398/064.083.0411