Characterizing Growth and Condition of Endangered Humpback Chub in the Lower Colorado River
نویسندگان
چکیده
منابع مشابه
A quantitative life history of endangered humpback chub that spawn in the Little Colorado River: variation in movement, growth, and survival
While the ecology and evolution of partial migratory systems (defined broadly to include skip spawning) have been well studied, we are only beginning to understand how partial migratory populations are responding to ongoing environmental change. Environmental change can lead to differences in the fitness of residents and migrants, which could eventually lead to changes in the frequency of the s...
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Riverine ecosystems have been altered in many large catchments by dam development to provide water, power, flood control and navigational benefits to humans. Conservation actions in these river ecosystems are commonly focused on minimum releases of water to downstream ecosystems. Increasingly minimum release approaches are being replaced with ‘experimental’ flows that mimic natural conditions i...
متن کاملDevelopment of a Temperature-Dependent Growth Model for the Endangered Humpback Chub Using Capture-Recapture Data
Model derived predictions of fish growth are frequently required for detailed investigations of population dynamics to inform management decisions. Simple growth models are typically fit to paired age and length data, but age data is often not available from endangered species because of restrictions on lethal or invasive sampling methods. Growth increment data from capture-recapture studies ca...
متن کاملUsing Otolith Chemistry Tags and Growth Patterns to Distinguish Movements and Provenance of Native Fish in the Grand Canyon
Fish otolith and water chemistry were assessed in the Grand Canyon reach of the Colorado River and its tributaries. Aqueous strontium and selenium (in ratio to calcium) and carbon stable isotopic ratios were identified as markers with excellent potential to track the provenance and movements of the endangered humpback chub Gila cypha. Although otolith dC and Sr/Ca varied proportionately to wate...
متن کاملStocking of Endangered Razorback Suckers in the Lower Colorado River Basin over Three Decades: 1974–2004
—The razorback sucker Xyrauchen texanus was historically widespread and abundant throughout the larger streams of the Colorado River basin, ranging from Sonora, Mexico, to Wyoming. The species was federally listed as endangered in 1991 because it has been extirpated from most of its range. Its decline is attributed to habitat loss and predation by nonnative fishes. Thirty years of federal and s...
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ژورنال
عنوان ژورنال: Journal of Fish and Wildlife Management
سال: 2017
ISSN: 1944-687X
DOI: 10.3996/042016-jfwm-036