Population size of pallid sturgeon, <i>Scaphirhynchus albus</i>
 (Forbes &amp; Richardson, 1905), in the lower Missouri River near Kansas City, Missouri, USA

Winders, Kyle; Steffensen, Kirk D.

doi:10.1111/jai.12558

Cited by 11 publications

(33 citation statements)

References 16 publications

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“…Population estimates by Steffensen et al. () in an 80.5 rkm reach below the Platte River and Winders and Steffensen () in a 43.3 rkm reach downstream of Kansas City, MO support this decreasing downstream population trend. Overall, estimates for hatchery‐reared population are three to six times higher and wild population estimates are approximately ten times higher in the upstream study area (Steffensen et al., ).…”

Section: Discussionmentioning

confidence: 83%

Updated assessment of hatchery‐reared pallid sturgeon (Forbes & Richardson, 1905) survival in the lower Missouri River

et al. 2015

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Summary As pallid sturgeon, Scaphirhynchus albus (Forbes & Richardson, 1905), natural reproduction and recruitment remains very minimal in the lower Missouri River from Gavins Point Dam (river kilometer [rkm] 1305.2) to the confluence with the Mississippi River (rkm 0.0), hatchery supplementation and river‐wide monitoring efforts have continued. Annual survival estimates of hatchery‐reared pallid sturgeon stocked in the lower Missouri River were previously estimated during 1994–2008. Low recapture rates prior to 2006 limited the data available to estimate survival, which resulted in considerable uncertainty for the estimate of annual survival of age‐1 fish. Therefore, the objective was to provide more precise estimates of annual survival of pallid sturgeon using five additional years of stocking and sampling. The Cormack‐Jolly‐Seber model structure provided in program MARK was used to estimate the age‐specific survival estimates. Over 135 000 hatchery‐reared pallid sturgeon were released during 1994–2011 and recaptured at a rate of 1.9%, whereby estimates for the annual survival of age‐0 (Ø = 0.048) and >age‐1 (Ø = 0.931) were similar to those previously reported, but the age‐1 (Ø = 0.403) survival estimate was 52% lower. Post hoc analysis using time‐specific survival estimates indicated lower survival for age‐1 fish post‐2003 year classes, relative to the pre‐2002 year classes. An analysis confirms that hatchery‐reared pallid sturgeon continue to survive in the wild. However, low survival during the first 2 years of life is a management concern as efforts are aimed at maximizing genetic diversity and population growth. A follow‐up analysis also demonstrated the variability of capture rates and survival over time, which reinforces the need to continue to monitor and evaluate mark‐recapture data. The mark‐recapture efforts have provided demographic parameter estimates that remain a critical component for species recovery as these data are incorporated into population models.

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Section: Discussionmentioning

confidence: 83%

Updated assessment of hatchery‐reared pallid sturgeon (Forbes & Richardson, 1905) survival in the lower Missouri River

et al. 2015

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“…This same combination of data was used to develop the first regional population estimates for pallid sturgeon in the Lower Missouri River ( fig. 2B) (Steffensen and others, 2012;Winders and Steffensen, 2014). The PSPAP data also have been used to characterize pallid sturgeon demographics, such as gender ratio, age-at-maturity, fecundity, reproductive readiness others, 2013a, 2013b), and growth (Shuman and others, 2011).…”

Section: Origin and Importance Of Pallid Sturgeon Population Size Andmentioning

confidence: 99%

Missouri River Scaphirhynchus albus (pallid sturgeon) effects analysis—Integrative report 2016

Jacobson¹,

Annis²,

Colvin³

et al. 2016

Scientific Investigations Report

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“…Similarly, the section downstream from the Kansas River confluence showed a positive correlation between proportion of "skinny fish" and the relative abundance of adult sized pallid sturgeon (r=0.67, p=0.011; table 20). Winders and Steffensen (2014) determined that the Ictaluridae species were the most important prey in the Lower Missouri River for subadult and adult pallid sturgeon. Evidence of the importance of Ictalurid prey relationships is questionable because we determined a significant positive correlation (r=0.74, p=0.005) in the relative abundance of blue catfish and proportion of "skinny" subadult pallid sturgeon, and in the 1-year offset (r=0.75, p=0.004).…”

Section: Results Of Competition Analysismentioning

confidence: 99%

Assessment of adult pallid sturgeon fish condition, Lower Missouri River—Application of new information to the Missouri River Recovery Program

Randall¹,

Colvin²,

Steffensen³

et al. 2017

Open-File Report

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For more information on the USGS-the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment-visit http://www.usgs.gov/ or call 1-888-ASK-USGS (1-888-275-8747).For an overview of USGS information products, including maps, imagery, and publications, visit http://www.usgs.gov/pubprod/.Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.Although this information product, for the most part, is in the public domain, it also may contain copyrighted materials as noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner. Table 19.Summary of the correlation statistics for hypothesized independent variables that may be affecting juvenile (less than 600 millimeters) pallid sturgeon condition in the lower Missouri River.. ........... 68 Table 20.Summary of the correlation statistics for hypothesized independent variables that may be affecting subadult (600-800 millimeters) pallid sturgeon condition in the lower Missouri River.. ................. 69 Table 21.Summary of the correlation statistics for hypothesized independent variables that may be affecting adult (greater than 800 millimeters) pallid sturgeon condition in the lower Missouri River. AbstractDuring spring 2015, Nebraska Game and Parks Commission (NGPC) biologists noted that pallid sturgeon (Scaphirhynchus albus) were in poor condition during sampling associated with the Pallid Sturgeon Population Assessment Project and NGPC's annual pallid sturgeon broodstock collection effort. These observations prompted concerns that reduced fish condition could compromise reproductive health and population growth of pallid sturgeon. There was a further concern that compromised condition could possibly be linked to U.S. Army Corps of Engineers management actions and increase jeopardy to the species. An evaluation request was made to the Missouri River Recovery Program and the Effects Analysis Team was chartered to evaluate the issue. Data on all Missouri River pallid sturgeon captures were requested and received from the National Pallid Sturgeon Database. All data were examined for completeness and accuracy; 12,053 records of captures between 200 millimeters fork length (mm FL) and 1,200 mm FL were accepted. We analyzed condition using (1) the condition formula (Kn) from Shuman and others (2011); (2) a second Kn formulation derived from the 12,053 records (hereafter referred to as "Alternative Kn"); and (3) an analysis of covariance (ANCOVA) approach that did not rely on a Kn formulation. The Kn data were analyzed using group (average annual Kn) and individual (percentage in low, normal, and robust conditions) approaches. Using the Shuman Kn formulation, annual mean Kn was fairly static from 2005 to 2011 (although always higher in the upper basin), declined from 2012 to 2015, then remained either static (lower basin) or increasing (upper basin) in 2016. Under the Alternative Kn formulation, the ...

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Population size of pallid sturgeon, Scaphirhynchus albus (Forbes & Richardson, 1905), in the lower Missouri River near Kansas City, Missouri, USA

Cited by 11 publications

References 16 publications

Updated assessment of hatchery‐reared pallid sturgeon (Forbes & Richardson, 1905) survival in the lower Missouri River

Updated assessment of hatchery‐reared pallid sturgeon (Forbes & Richardson, 1905) survival in the lower Missouri River

Missouri River Scaphirhynchus albus (pallid sturgeon) effects analysis—Integrative report 2016

Assessment of adult pallid sturgeon fish condition, Lower Missouri River—Application of new information to the Missouri River Recovery Program

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