Browsing Aquatic Ecology Laboratory Publications by Title
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Predicting impact of freshwater exotic species on native biodiversity: Challenges in spatial scaling
Lodge, David M.; Stein, Roy A.; Brown, Kenneth M.; Covich, Alan P.; Bronmark, Christer; Garvey, James E.; Klosiewski, Steven P. ( 1998 )Global homogenization of biota is underway through worldwide introduction and establishment of nonindigenous (exotic) species. Freshwater ecologists should devote more attention to exotic species for two reasons. First, ... -
Prey resources before spawning influence gonadal investment of female, but not male, white crappie
Bunnell, David B.; Thomas, S. E.; Stein, Roy A. ( 2007 )In this study, an outdoor pool experiment was used to evaluate the effect of prey resources during 4 months before spawning on the gonadal investments of male and female white crappie Pomoxis annularis, a popular freshwater ... -
Prey Selection by Larval Fishes as Influenced by Available Zooplankton and Gape Limitation
DeVries, Dennis R.; Bremigan, Mary T.; Stein, Roy A. ( 1998 )Feeding success during the first weeks of life is critical to determining survival and ultimate year-class strength of fishes. To compare the relative influence of gape limitation and available zooplankton on prey size ... -
Problem-solving Research for Management: A Perspective
Parrish, Donna L.; Mather, Martha E.; Stein, Roy A. ( 1995-10 )We convened a symposium titled "Problem-solving Research for Management: Shared Responsibilities" at the 123rd annual meeting of the American Fisheries Society in Portland, Oregon. Our symposium sought to encourage ... -
Quantifying Linkages among Gizzard Shad, Zooplankton, and Phytoplankton in Reservoirs
Dettmers, John M.; Stein, Roy A. ( 1996 )Food webs in northern temperate lakes frequently exhibit tightly linked interactions between adjacent trophic levels that lead to top-down effects from piscivores to phytoplankton. To determine if these interactions occur ... -
Quantifying Responses to Hybrid Striped Bass Predation across Multiple Trophic Levels: Implications for Reservoir Biomanipulation
Dettmers, John M.; DeVries, Dennis R.; Stein, Roy A. ( 1996-07 )Top-down effects from piscivores to phytoplankton have been documented in north temperate lakes, thus permitting managers to regulate these food webs. From our review of the literature, reservoir trophic interactions ... -
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 ...