Short‐term survival and dispersal of hatchery‐reared juvenile pallid sturgeon stocked in the channelized Missouri River. (1st September 2015)

• Record Type: Journal Article
• Authors: Eder, B. L.; Steffensen, K. D.; Haas, J. D.; Adams, J. D.
• Is Part Of: Journal of applied ichthyology. Volume 31:Number 6(2015:Dec.)
• Page Start: 991
• Page End: 996
• Publication Date: 2015-09-01
• Subjects: Fishes -- Periodicals; Fish culture -- Periodicals; Fisheries -- Periodicals; Ichthyology -- Periodicals; 597
• DOI: 10.1111/jai.12881
• Languages: English
• ISSNs: 0175-8659

Abstract

Summary: In the summer and fall of 2014, Nebraska Game and Parks Commission crews monitored juvenile pallid sturgeon, Scaphirhynchus albus (Forbes & Richardson, 1905) (age‐1 and age‐4) implanted with telemetry tags that were stocked in a side channel of the Missouri River in Nebraska, USA to gain knowledge into post‐stocking survival and dispersal. For this study, specific questions were asked: (i) what is the short‐term survival of stocked pallid sturgeon, (ii) do pallid sturgeon stocked in summer exhibit decreased survival rates due to increased water temperatures or high river discharge, and (iii) how quickly do pallid sturgeon disperse from a stocking site? Detection histories for two rounds were used to estimate apparent survival ( Ø ) and detection ( p ) rates using maximum likelihood estimators based on the standard mark‐recapture Cormack‐Jolly‐Seber model structure within program MARK. Overall apparent survival was 98.6% and dispersal was rapid; therefore, moratoriums on stocking pallid sturgeon during summer months or during high flow events do not appear to be warranted.