Daniel Shoup - Academia.edu (original) (raw)

Uploads

Papers by Daniel Shoup

Research paper thumbnail of Diel Littoral–Pelagic Movements by Juvenile Bluegills in a Small Lake

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Age-0 gizzard shad prey supply and predator demand: Analysis of the trophic support capacity of southern U.S. reservoirs

Gizzard shad Dorosoma cepedianum often comprise a majority of the prey biomass in reservoir syste... more Gizzard shad Dorosoma cepedianum often comprise a majority of the prey biomass in reservoir systems. However, they rapidly grow to a size surpassing the preferred prey sizes of most piscivores. Therefore, even reservoirs with high gizzard shad abundance may be prey limited if age-0 abundance is low. Previous studies have not considered the effect of the prey supply of age-0 gizzard shad on the abundance, growth, or condition of the entire piscivore community in reservoirs. We used bioenergetics modeling and Monte Carlo simulations to quantify the abundance of age-0 gizzard shad necessary to sustain seven piscivore species at low, medium, and high (based on published values for each species) growth rates, population sizes, mortality rates, and proportions of gizzard shad in piscivore diets. Annual necessary gizzard shad abundance (accounting for non-predation mortality and reproductive surplus required for prey sustainability and scaled to August 15th) ranged from < 10·ha-1·pisciv...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of A simplified approach for estimating age-0 gizzard shad prey supply and predator demand

Fisheries Management and Ecology, 2014

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Length Selectivity and Size-Bias Correction for the North American Standard Gill Net

North American Journal of Fisheries Management, 2016

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Effects of Turbidity on Prey Selection and Foraging Return of Adult Largemouth Bass in Reservoirs

North American Journal of Fisheries Management, 2015

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Gillnet Contact Selectivity and Correction Factors for the AFS Standard Gillnet Design

Gill nets are inherently size-specific due to the physics of how they capture fish. Size selectiv... more Gill nets are inherently size-specific due to the physics of how they capture fish. Size selectivity can affect several fisheries metrics, including length frequencies and size indices. To examine contact selectivity of the AFS standard gill net, we sampled white crappie, white bass, hybrid striped bass, saugeye, and channel catfish in five Oklahoma reservoirs and used the SELECT method to model five log-linear selectivity curves (normal, normal location, log normal, gamma, and bimodal). For all species, the bimodal model best fit the data and was used to adjust length frequencies and PSDs. The adjustments were typically minor for moderate-sized fish and strongest for small fish (i.e., compensated for low retention of small fish). Some species also required adjustments to compensate for low retention of large fish. Unadjusted and adjusted length frequencies were not significantly different for any species; however, adjusted PSD and PSD-P values differed from unadjusted values by &gt...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The Role of Aquatic Macrophytes in Mediating Predation Risk of Juvenile Largemouth Bass

Managers frequently invest considerable resources to establish native aquatic vegetation in aging... more Managers frequently invest considerable resources to establish native aquatic vegetation in aging reservoirs, typically with the goal of increasing recruitment of sport fishes (particularly largemouth bass). Submersed macrophytes provide structural complexity that produces a refuge and reduces predation mortality for some prey (i.e., bluegill). However, little is known about whether vegetation increases juvenile largemouth bass survival. Therefore, the objective of this study was to examine the effect of aquatic vegetation on survival of juvenile largemouth bass when exposed to predation. Aquatic vegetation was planted on one-half of a study tank at natural stem densities. A second tank, void of any structure, was used as a control. Videotaped behavioral trials were conducted with one adult largemouth bass and ten juvenile largemouth bass in the same tank. We quantified the time predators spent searching, orienting, and pursuing prey as well as the strike-to-capture ratio and the ti...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Effect of electrofishing sampling design on bias of size-related metrics for blue catfish in reservoirs

… , and management of …, 2011

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Opportunities for urban fishing: developing urban fishing programs to recruit and retain urban anglers

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Diel Activity Levels of Centrarchid Fishes in a Small Ohio Lake

Transactions of the American Fisheries Society, Sep 1, 2004

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The Effect of Largemouth Bass Predation on Overwinter Survival of Two Size-Classes of Age-0 Bluegills

Http Dx Doi Org 10 1577 T07 038 1, Jan 9, 2011

Bookmarks Related papers MentionsView impact

Research paper thumbnail of A Review of Ictalurid Sampling Methods: Do We Need a Catfish-Specific Standardized Sampling Protocol?

[Visit Client Website ...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Comparison of Push Nets and Tow Nets for Sampling Larval Fish with Implications for Assessing Littoral Habitat Utilization

North American Journal of Fisheries Management, Jan 9, 2011

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Effects of Turbidity and Cover on Prey Selectivity of Adult Smallmouth Bass

Http Dx Doi Org 10 1577 T08 159 1, Jan 9, 2011

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Prey Community Responses to Bluegill and Gizzard Shad Foraging: Implications for Growth of Juvenile Largemouth Bass

Http Dx Doi Org 10 1577 T04 073 1, Jan 9, 2011

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Ecomorphological diet predictions: an assessment using inland silverside (Menidia beryllina) and longear sunfish (Lepomis megalotis) from Lake Texoma

Hydrobiologia, 1997

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Comparison of the Species Composition, Catch Rate, and Length Distribution of the Catch from Trap Nets with Three Different Mesh and Throat Size Combinations

North American Journal of Fisheries Management, Jan 8, 2011

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Effects of Predation Risk and Foraging Return on the Diel Use of Vegetated Habitat by Two Size-Classes of Bluegills

Transactions of the American Fisheries Society, 2003

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The Effects of Turbidity on Prey Selection by Piscivorous Largemouth Bass

Transactions of the American Fisheries Society, Sep 1, 2009

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Fish Diversity and Abundance in Relation to Interannual and Lake-Specific Variation in Abiotic Characteristics of Floodplain Lakes of the Lower Kaskaskia River, Illinois

Http Dx Doi Org 10 1577 T07 272 1, Jan 9, 2011

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Diel Littoral–Pelagic Movements by Juvenile Bluegills in a Small Lake

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Age-0 gizzard shad prey supply and predator demand: Analysis of the trophic support capacity of southern U.S. reservoirs

Gizzard shad Dorosoma cepedianum often comprise a majority of the prey biomass in reservoir syste... more Gizzard shad Dorosoma cepedianum often comprise a majority of the prey biomass in reservoir systems. However, they rapidly grow to a size surpassing the preferred prey sizes of most piscivores. Therefore, even reservoirs with high gizzard shad abundance may be prey limited if age-0 abundance is low. Previous studies have not considered the effect of the prey supply of age-0 gizzard shad on the abundance, growth, or condition of the entire piscivore community in reservoirs. We used bioenergetics modeling and Monte Carlo simulations to quantify the abundance of age-0 gizzard shad necessary to sustain seven piscivore species at low, medium, and high (based on published values for each species) growth rates, population sizes, mortality rates, and proportions of gizzard shad in piscivore diets. Annual necessary gizzard shad abundance (accounting for non-predation mortality and reproductive surplus required for prey sustainability and scaled to August 15th) ranged from < 10·ha-1·pisciv...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of A simplified approach for estimating age-0 gizzard shad prey supply and predator demand

Fisheries Management and Ecology, 2014

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Length Selectivity and Size-Bias Correction for the North American Standard Gill Net

North American Journal of Fisheries Management, 2016

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Effects of Turbidity on Prey Selection and Foraging Return of Adult Largemouth Bass in Reservoirs

North American Journal of Fisheries Management, 2015

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Gillnet Contact Selectivity and Correction Factors for the AFS Standard Gillnet Design

Gill nets are inherently size-specific due to the physics of how they capture fish. Size selectiv... more Gill nets are inherently size-specific due to the physics of how they capture fish. Size selectivity can affect several fisheries metrics, including length frequencies and size indices. To examine contact selectivity of the AFS standard gill net, we sampled white crappie, white bass, hybrid striped bass, saugeye, and channel catfish in five Oklahoma reservoirs and used the SELECT method to model five log-linear selectivity curves (normal, normal location, log normal, gamma, and bimodal). For all species, the bimodal model best fit the data and was used to adjust length frequencies and PSDs. The adjustments were typically minor for moderate-sized fish and strongest for small fish (i.e., compensated for low retention of small fish). Some species also required adjustments to compensate for low retention of large fish. Unadjusted and adjusted length frequencies were not significantly different for any species; however, adjusted PSD and PSD-P values differed from unadjusted values by &gt...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The Role of Aquatic Macrophytes in Mediating Predation Risk of Juvenile Largemouth Bass

Managers frequently invest considerable resources to establish native aquatic vegetation in aging... more Managers frequently invest considerable resources to establish native aquatic vegetation in aging reservoirs, typically with the goal of increasing recruitment of sport fishes (particularly largemouth bass). Submersed macrophytes provide structural complexity that produces a refuge and reduces predation mortality for some prey (i.e., bluegill). However, little is known about whether vegetation increases juvenile largemouth bass survival. Therefore, the objective of this study was to examine the effect of aquatic vegetation on survival of juvenile largemouth bass when exposed to predation. Aquatic vegetation was planted on one-half of a study tank at natural stem densities. A second tank, void of any structure, was used as a control. Videotaped behavioral trials were conducted with one adult largemouth bass and ten juvenile largemouth bass in the same tank. We quantified the time predators spent searching, orienting, and pursuing prey as well as the strike-to-capture ratio and the ti...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Effect of electrofishing sampling design on bias of size-related metrics for blue catfish in reservoirs

… , and management of …, 2011

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Opportunities for urban fishing: developing urban fishing programs to recruit and retain urban anglers

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Diel Activity Levels of Centrarchid Fishes in a Small Ohio Lake

Transactions of the American Fisheries Society, Sep 1, 2004

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The Effect of Largemouth Bass Predation on Overwinter Survival of Two Size-Classes of Age-0 Bluegills

Http Dx Doi Org 10 1577 T07 038 1, Jan 9, 2011

Bookmarks Related papers MentionsView impact

Research paper thumbnail of A Review of Ictalurid Sampling Methods: Do We Need a Catfish-Specific Standardized Sampling Protocol?

[Visit Client Website ...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Comparison of Push Nets and Tow Nets for Sampling Larval Fish with Implications for Assessing Littoral Habitat Utilization

North American Journal of Fisheries Management, Jan 9, 2011

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Effects of Turbidity and Cover on Prey Selectivity of Adult Smallmouth Bass

Http Dx Doi Org 10 1577 T08 159 1, Jan 9, 2011

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Prey Community Responses to Bluegill and Gizzard Shad Foraging: Implications for Growth of Juvenile Largemouth Bass

Http Dx Doi Org 10 1577 T04 073 1, Jan 9, 2011

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Ecomorphological diet predictions: an assessment using inland silverside (Menidia beryllina) and longear sunfish (Lepomis megalotis) from Lake Texoma

Hydrobiologia, 1997

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Comparison of the Species Composition, Catch Rate, and Length Distribution of the Catch from Trap Nets with Three Different Mesh and Throat Size Combinations

North American Journal of Fisheries Management, Jan 8, 2011

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Effects of Predation Risk and Foraging Return on the Diel Use of Vegetated Habitat by Two Size-Classes of Bluegills

Transactions of the American Fisheries Society, 2003

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The Effects of Turbidity on Prey Selection by Piscivorous Largemouth Bass

Transactions of the American Fisheries Society, Sep 1, 2009

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Fish Diversity and Abundance in Relation to Interannual and Lake-Specific Variation in Abiotic Characteristics of Floodplain Lakes of the Lower Kaskaskia River, Illinois

Http Dx Doi Org 10 1577 T07 272 1, Jan 9, 2011

Bookmarks Related papers MentionsView impact

Log In