Assessment of Hatchery-Reared Pallid Sturgeon Survival in the Lower Missouri River

作者: Kirk D. Steffensen , Larkin A. Powell , Jeff D. Koch

DOI: 10.1577/M09-151.1

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摘要: Abstract The population of pallid sturgeon Scaphirhynchus albus in the lower Missouri River between Gavins Point Dam (river kilometer [rkm] 1,305.2) and confluence with Mississippi (rkm 0.0) remains imperiled, little to no natural recruitment occurring. Artificial propagation subsequent augmentation (i.e., stocking) may be only viable option for maintaining populations near term. Because relatively is known about ability hatchery-reared survive, objective this study was quantify survival estimates stocked into River. We used stock–recapture data collected from 1994 2008 derive based on Cormack–Jolly–Seber model within program MARK. Since 1994, a total 78,244 have been released 1% these recaptured. Recapture numbers by size at stocking were as foll...

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