Influence of a Saugeye (Sauger × Walleye) Introduction Program on the Black Crappie Population in Richmond Lake, South Dakota

Galinat, Gene F.; Willis, David W.; Blackwell, Brian G.; Hubers, Matthew J.

doi:10.1577/1548-8675(2002)022<1416:ioassw>2.0.co;2

Cited by 19 publications

(30 citation statements)

References 16 publications

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“…Given that larval white bass compete for resources with other age-0 fishes, including walleye (Michaletz et al 1987;Beck et al 1998) and black crappie (Pope et al 1996;Galinat et al 2002), it is likely that resource conditions (e.g., abundant zooplankton and reservoir Table 4. The second-most important variable in the candidate model set for white bass was age-0 walleye abundance, which was also positively related to year-class strength of white bass.…”

Section: White Bass Recruitmentmentioning

confidence: 99%

Environmental factors regulating the recruitment of walleye Sander vitreus and white bass Morone chrysops in irrigation reservoirs

DeBoer

Pope

Koupal

2012

Ecology of Freshwater Fish

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Understanding the environmental factors that regulate fish recruitment is essential for effective management of fisheries. Generally, first-year survival, and therefore recruitment, is inherently less consistent in systems with high intra-and interannual variability. Irrigation reservoirs display sporadic patterns of annual drawdown, which can pose a substantial challenge to recruitment of fishes. We developed species-specific models using an 18-year data set compiled from state and federal agencies to investigate variables that regulate the recruitment of walleye Sander vitreus and white bass Morone chrysops in irrigation reservoirs in south-west Nebraska, USA. The candidate model set for walleye included only abiotic variables (water-level elevation, minimum daily air temperature during winter prior to hatching, annual precipitation, spring warming rate and May reservoir discharge), and the candidate model set for white bass included primarily biotic variables (catch per unit effort (CPUE) of black crappie Pomoxis nigromaculatus, CPUE of age-0 walleye, CPUE of bluegill Lepomis macrochirus and CPUE of age-3 and older white bass), each of which had a greater relative importance than the single abiotic variable (minimum daily air temperature during winter after hatching). Our findings improve the understanding of the recruitment of fishes in irrigation reservoirs and the relative roles of abiotic and biotic factors.

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Section: White Bass Recruitmentmentioning

confidence: 99%

Environmental factors regulating the recruitment of walleye Sander vitreus and white bass Morone chrysops in irrigation reservoirs

DeBoer

Pope

Koupal

2012

Ecology of Freshwater Fish

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“…; Mosher ; Boxrucker ; Galinat et al. ). Concern has been raised regarding diploid saugeye stockings in Kansas because of potential impacts to the genetic integrity of percid populations (Fields and Phillip ; Quist et al.…”

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confidence: 99%

Comparison of Diploid and Triploid Saugeye Recruitment, Growth, and Condition in Kansas Impoundments

Koch

Steffen

Goeckler

et al. 2018

N American J Fish Manag

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Saugeyes (Walleye Sander vitreus × Sauger S. canadensis) are stocked by natural resource agencies to provide angling opportunities and biological control of abundant small‐bodied fishes. Concern has been raised regarding the stocking of fertile diploid saugeyes in Kansas waters due to potential genetic introgression into wild parental stocks and unintended natural reproduction in ecologically sensitive systems. As such, triploid saugeyes have been stocked in Kansas since 2006 but with minimal evaluation. We compared relative recruitment, growth, and condition of diploid and triploid saugeyes after stocking equal numbers of 3–6‐d‐old diploid and triploid saugeye fry in four Kansas reservoirs for 3 years. Saugeyes were sampled from study reservoirs annually (2014–2016) with autumn night electrofishing, and flow cytometry was used to determine the ploidy of sampled fish. Throughout the study, diploid fish composed approximately 80% of sampled saugeyes. Age‐0 year‐classes consisted of 67–100% diploid fish, depending on the study reservoir and sampling year. As saugeyes reached ages 1 and 2, similar patterns in relative recruitment were indicated, with diploids outnumbering triploids by approximately four times. At individual study impoundments, diploid saugeyes composed 75–87% of fish from all study year‐classes. Mean length of diploid saugeyes was generally greater than that of triploids at age 0, whereas mean lengths at ages 1 and 2 were similar for the two groups. Our results indicate that diploid saugeye fry represent a more efficient stocking option than triploid fry and that managers should carefully balance consideration of the relative recruitment of diploid and triploid saugeyes with potential genetic integration between Sander spp. when conducting supplemental stockings.

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“…; Galinat et al. ). Thus, it is likely that age‐0 larval walleye and white bass abundances are greater in years or reservoirs with fewer competitors.…”

Section: Discussionmentioning

confidence: 75%

“…; Galinat et al. ) and juvenile walleye and white bass prey on age‐0 gizzard shad (Hartman & Margraf ; Einfalt & Wahl ; Michaletz ; Schultz et al. ; Willis et al.…”

Section: Introductionmentioning

confidence: 99%

Factors influencing recruitment of walleye and white bass to three distinct early ontogenetic stages

DeBoer

Pope

2015

Ecology of Freshwater Fish

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Determining the factors that influence recruitment to sequential ontogenetic stages is critical for understanding recruitment dynamics of fish and for effective management of sportfish, particularly in dynamic and unpredictable environments. We sampled walleye (Sander vitreus) and white bass (Morone chrysops) at 3 ontogenetic stages (age 0 during spring: 'age-0 larval'; age 0 during autumn: 'age-0 juvenile'; and age 1 during autumn: 'age-1 juvenile') from 3 reservoirs. We developed multiple linear regression models to describe factors influencing age-0 larval, age-0 juvenile and age-1 juvenile walleye and white bass abundance indices. Our models explained 40-80% (68 AE 9%; mean AE SE) and 71%-97% (81 AE 6%) of the variability in catch for walleye and white bass respectively. For walleye, gizzard shad were present in the candidate model sets for all three ontogenetic stages we assessed. For white bass, there was no unifying variable in all three stage-specific candidate model sets, although walleye abundance was present in two of the three white bass candidate model sets. We were able to determine several factors affecting walleye and white bass year-class strength at multiple ontogenetic stages; comprehensive analyses of factors influencing recruitment to multiple early ontogenetic stages are seemingly rare in the literature. Our models demonstrate the interdependency among early ontogenetic stages and the complexities involved with sportfish recruitment.

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Influence of a Saugeye (Sauger × Walleye) Introduction Program on the Black Crappie Population in Richmond Lake, South Dakota

Cited by 19 publications

References 16 publications

Environmental factors regulating the recruitment of walleye Sander vitreus and white bass Morone chrysops in irrigation reservoirs

Environmental factors regulating the recruitment of walleye Sander vitreus and white bass Morone chrysops in irrigation reservoirs

Comparison of Diploid and Triploid Saugeye Recruitment, Growth, and Condition in Kansas Impoundments

Factors influencing recruitment of walleye and white bass to three distinct early ontogenetic stages

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