Browsing Aquatic Ecology Laboratory Publications by Title
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River Discharge Drives Survival of Larval Walleye
Mion, Joseph B.; Stein, Roy A.; Marschall, Elizabeth A. ( 1998 )Walleye (Stizostedion vitreum) in Lake Erie have historically experienced large fluctuations in recruitment success, which have important implications for walleye population dynamics as well as food web interactions. Because ... -
Round Goby Predation on Smallmouth Bass Offspring in Nests during Simulated Catch-and-Release Angling
Steinhart, Geoffrey B.; Marschall, Elizabeth A.; Stein, Roy A. ( 2004 )Round goby Neogobius melanostomus first appeared in Lake Erie in 1993 and now occur in extremely high densities in some areas. As known nest predators, round goby currently pose a threat to nest-guarding smallmouth bass ... -
Scale-Dependent Associations Among Fish Predation, Littoral Habitat, and Distributions of Crayfish Species
Garvey, James E.; Rettig, Jessica E.; Stein, Roy A.; Lodge, David M.; Klosiewski, Steven P. ( 2003 )To predict how species establish and disperse within novel communities, the spatial scale at which competition, predation, and habitat interact must be understood. We explored how these factors affect the distribution and ... -
Seasonal Consumptive Demand and Prey Use by Stocked Saugeyes in Ohio Reservoirs
Denlinger, Jonathan C. Sieber; Hale, R. Scott; Stein, Roy A. ( 2006 )Community structure and species composition may be strongly influenced by predator-prey interactions resulting from and leading to episodes of population abundance or scarcity. We quantified diets of stocked saugeyes (female ... -
Selective Predation by Blue Crabs on the Gastropod, Bittium varium: Confirmation From Opercula Found in the Sediments
Wright, Russell A.; Crowder, Larry B.; Martin, Thomas H. ( 1996 )Small blue crabs (Callinectes sapidus Rathbun, 43-70 mm carapace width) can influence the size-distribution of the gastropod, Bittium varium, strongly reducing the contribution of snails >3 mm shell length in field enclosures. ... -
Selective Predation by Three Esocids: The Role of Prey Behavior and Morphology
Wahl, David H.; Stein, Roy A. ( 1988-03 )We documented differential vulnerability of fathead minnows Pimephales promelas, gizzard shad Dorosoma cepedianum. and bluegills Lepomis macrochirus to predation by muskellunge Esox masquinongy. northern pike E. lucius. ... -
Sperm Production and Cryopreservation in Muskellunge after Carp Pituitary Extract and Human Chorionic Gonadotropin Injection
Lin, Feng; Ciereszko, Andrzej; Dabrowski, Konrad ( 1996 )We investigated the effects of carp pituitary extract (CPE) and human chorionic gonadotropin (hCG) on the sperm production in muskellunge Esox masquinongy. Total volumes of milt collected from fish (mean weight, 4.8 ± 1.5 ... -
Stocking Threadfin Shad: Consequences for Young-of-Year Fishes
DeVries, Dennis R.; Stein, Roy A.; Miner, Jeffrey G.; Mittelbach, Gary G. ( 1991-05 )Threadfin shad Dorosoma petenense are commonly introduced into reservoirs to supplement prey available to piscivorous fishes. To determine how early life stages of threadfin shad and their potential competitors and predators ... -
Testing for Evidence of Maternal Effects among Individuals and Populations of White Crappie
Bunnell, David B.; Scantland, Matthew A.; Stein, Roy A. ( 2005 )For an increasing number of species, maternal characteristics have been correlated with the characteristics of their eggs or larvae at the individual level. Documenting these maternal effects at the population level, ... -
Under-ice diel vertical migrations of Oncorhynchus nerka and their zooplankton prey
Steinhart, Geoffrey B.; Wurtsbaugh, Wayne A. ( 1999 )We used stationary hydroacoustics and measures of environmental conditions (water temperature, dissolved oxygen, light levels, and zooplankton) to determine what factors, foraging or predation risk, influenced die! vertical ... -
Understanding latitudinal trends in fish body size through models of optimal seasonal energy allocation
Garvey, James E.; Marschall, Elizabeth A. ( 2003 )For fish at high latitudes, short growing seasons should constrain size-at-age, although the converse often occurs. We used a dynamic state variable model to find energy allocation strategies to length, fat, and ovaries ... -
Understanding Reservoir Systems with Experimental Tests of Ecological Theory: A Prescription for Management
Stein, Roy A.; Bremigan, Mary T.; Dettmers, John M. ( 1996 )Enhancement of angler opportunities in U.S. reservoirs necessitates creative management approaches. One such approach, which builds on a successful manager–researcher partnership, derives from understanding reservoir food ... -
Uptake and depletion of plasma 17α-methyltestosterone during induction of masculinization in muskellunge, Esox masquinongy: Effect on plasma steroids and sex reversal
Rinchard, Jacques; Dabrowski, Konrad; Garcia-Abiado, Mary Ann; Ottobre, Joseph ( 1999 )Oral administration of 17α-methyltestosterone (MT) was used to induce masculinization of sexually undifferentiated muskellunge, Esox masquinongy. Three groups of muskellunge (mean weight, 2.5 ± 0.6 g) were submitted to MT ... -
Use of a Quadrat Rotenone Technique and Bioenergetics Modeling to Evaluate Prey Availability to Stocked Piscivores
Johnson, Brett M.; Stein, Roy A.; Carline, Robert F. ( 1988 )Young-of-year gizzard shad Dorosoma cepedianum, the primary prey for piscivores in Ohio impoundments, are difficult to sample by conventional techniques. We developed a technique for sampling littoral zone quadrats with ... -
Use of Erythrocyte Measurements to Identify Triploid Saugeyes
Garcia-Abiado, Mary Ann; Dabrowski, Konrad; Christensen, James E.; Czesny, Sergiusz; Bajer, Przemyslaw ( 1999 )The use of erythrocyte size measurements as a possible alternative to flow cytometry for identifying triploid saugeyes (female walleye Stizostedion vitreum X male sauger S. canadense) was evaluated. Blood smear preparations ... -
Using Growth/Mortality Trade-offs to Explore a Crayfish Species Replacement in Stream Riffles and Pools
Mather, Martha E.; Stein, Roy A. ( 1993 )A crayfish species replacement is underway in Ohio streams. We explore how growth, mortality, habitat use, and size influence the replacement of Orconectes sanborni by O. rusticus. In field cages, we assessed growth of ... -
Using Time and Energetic Measures of Cost in Estimating Prey Value for Fish Predators
Stein, Roy A.; Goodman, Cheryl Gosse; Marschall, Elizabeth A. ( 1984 )In the predator-prey interaction between redear sunfish (Lepomis mlcrolophus) and benthic, freshwater snails (Physa, Helisoma, and Oxytrema), we document selective predation among genera and sizes of prey and use optimal ... -
Variable Gizzard Shad Recruitment with Reservoir Productivity: Causes and Implications for Classifying Systems
Bremigan, Mary T.; Stein, Roy A. ( 2001 )Achieving sustainable prey fish assemblages that support sport fish predator populations is a fundamental challenge to fisheries managers. Among Midwestern and Southeastern (USA) reservoirs, gizzard shad, Dorosoma cepedianum, ... -
Winter Ecology of Kokanee: Implications for Salmon Management
Steinhart, Geoffrey B.; Wurtsbaugh, Wayne A. ( 2003-11 )We sampled various limnological parameters and measured growth and diet of age-0 kokanee Oncorhynchus nerka (lacustrine sockeye salmon) during two winters in a high-mountain lake of the Sawtooth Valley, Idaho. Although ... -
Zooplankton biomass enhances growth, but not survival, of first-feeding Pomoxis spp. Larvae
Bunnell, David B.; Gonzalez, Maria J.; Stein, Roy A. ( 2003 )We used otoliths to estimate growth and survival of white (Pomoxis annularis) and black (Pomoxis nigromaculatus) crappie larvae in five Ohio reservoirs. Because Pomoxis spp. larvae are among the smallest freshwater larvae ...