Brandon W. Baker

There is a limited understanding of the spatial and temporal variability of tributary use for riverine populations of white bass (Morone chrysops) during the spawning season. We sampled white bass in 10 tributaries of Arkansas River Pool 4 during their spawning season in 2010 and 2011. Each tributary was sampled using boat-mounted electrofishing every third week during the spawning season to assess spatial variability of white bass spawning. One tributary (Caney Bayou) known to be occupied by white bass during the spawning season was sampled weekly to document temporal variability of the...

The objectives of this study were to quantify ageing precision for largemouth bass (Micropterus salmoides) and spotted bass (M. punctulatus), and to evaluate the effect of ageing errors on the estimation of common fisheries metrics. Sagittal otoliths were extracted from 2164 largemouth bass and 738 spotted bass collected from throughout the Arkansas River, Arkansas. Largemouth bass collections occurred during 2004, 2005, and 2010; spotted bass collections were limited to 2004 and 2005. Annuli were counted by two independent readers from digital images of each whole otolith. For individuals...

White bass (Morone chrysops) are a popular sport fish throughout most of their zoogeographic distribution. We conducted a population assessment of white bass in Pool 4 of the Arkansas River. Using population metrics calculated from the assessment, responses of the white bass fishery to a 254-mm or 305-mm minimum length limit (MLL) were simulated using the Fishery Analysis and Modeling Simulator (FAMS) model. White bass ages ranged from 1-7, but 88% of white bass were less than age 5. Conditional natural mortality averaged 0.43, and total annual mortality was 54%, so exploitation was...