Browsing Aquatic Ecology Laboratory Publications by Title
Now showing results 33-52 of 112
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Effects of Extenders and Time of Storage before Freezing on Motility and Fertilization of Cryopreserved Muskellunge Spermatozoa
Ciereszko, Andrzej; Dabrowski, Konrad; Lin, F.; Christ, S. A.; Toth, G. P. ( 1999 )The usefulness of five extenders for cryopreservation of muskellunge semen was studied in fertilization trials and computer-assisted semen analysis (CASA) of postthaw sperm motility. The effect of prefreezing storage time ... -
Effects of sperm irradiation and heat shock on induction of gynogenesis in muskellunge (Esox masquinongy)
Lin, Feng; Dabrowski, Konrad ( 1996 )We report here the first induction of gynogenesis in esocid fish by UV irradiation and heat shock. Optimal dosage of sperm UV irradiation was in the range of 1440-2160 J/m2. Eggs fertilized with irradiated sperm at such ... -
Effects of storms, angling, and nest predation during angling on smallmouth bass (Micropterus dolomieu) nest success
Steinhart, Geoffrey B.; Leonard, Nancy J.; Stein, Roy A.; Marschall, Elizabeth A. ( 2005 )We studied how storms, angling, and nest predation during angling affected smallmouth bass (Micropterus dolomieu) nest survival in the Bass Islands, Lake Erie, Ohio, USA. Increasing angler effort and introduction of an ... -
ENHANCING PERCID STOCKING SUCCESS BY UNDERSTANDING AGE-0 PISCIVORE–PREY INTERACTIONS IN RESERVOIRS
Donovan, Nicholas S.; Stein, Roy A.; White, Matthew M. ( 1997 )Though young-of-year (YOY) saugeyes (Stizostedion vitreum 3 S. canadense) are routinely stocked in spring to create and maintain percid fisheries, their growth and survival to fall vary greatly among Ohio reservoirs, as ... -
Escape tactics used by bluegills and fathead minnows to avoid predation by tiger muskellunge
Moody, Robert C.; Helland, John M.; Stein, Roy A. ( 1983 )To explain why esocids prefer cylindrical, soft-rayed prey over compressed, spiny-rayed prey, we quantified behavioral interaction between tiger muskellunge (F1 hybrid of male northern pike Esox lucius and female muskellunge ... -
Eutrophication Effects on Prey Size and Food Available to Yellow Perch in Lake Erie
Hayward, Robert S.; Margraf, F. Joseph ( 1987 )Before 1970, yellow perch Perca flavescens grew at similar rates in Lake Erie's western and central basins. At that time, high rates of nutrient loading were causing rapid eutrophication in both areas so that by the mid-1970s ... -
Evaluating How Local- and Regional-Scale Processes Interact to Regulate Growth of Age-0 Largemouth Bass
Garvey, James E.; Wright, Russell A.; Stein, Roy A.; Ferry, Kristen H. ( 2000-07 )Regional- and local-scale processes may interact to influence early growth and survival, thereby governing cohort strength. During summer through fall 1994–1996, we assessed how precipitation (a regional-scale process) and ... -
Experimental Assessment of Mortality and Hyperglycemia in Tiger Muskellunge Due to Stocking Stressors
Mather, Martha E.; Stein, Roy A.; Carline, Robert F. ( 1986-09 )Tiger muskellunge (the F1 hybrid of female muskellunge Esox masquinongy and male northern pike E.lucius) have survived poorly when stocked in reservoirs. To understand why, we quantified, in the laboratory, both mortality ... -
Experimental Assessment of the Influence of Zooplankton Size and Density on Gizzard Shad Recruitment
Bremigan, Mary T.; Stein, Roy A. ( 1997 )Available prey influence fish recruitment, especially when size-dependent processes, such as starvation or predation, dictate larval survival. Yet, for zooplanktivorous larval fishes, quantitative assessments of how ... -
Exploring Spatial and Temporal Variation Within Reservoir Food Webs: Predictions for Fish Assemblages
Garvey, James E.; Dingledine, Natalie A.; Donovan, Nicholas S.; Stein, Roy A. ( 1998 )In the limnetic zones of small, highly productive reservoirs, young-of-year (YOY) gizzard shad (Dorosoma cepedianum) or threadfin shad (D. petenense) (henceforth, shad) often attain high densities during spring. Environmental ... -
Factors Affecting Survival of Age-0 Saugeye Stizostedion vitreum X S. canadense Stocked in Ohio Reservoirs
Stahl, Thomas P.; Thiede, Gary P.; Stein, Roy A.; Lewis, Edward M.; Austin, Milton R.; Culver, David A. ( 1996 )To explain variable stocking success of juvenile saugeye Stizostedion vitreum females x S. canadense males, we quantified survival of saugeyes in response to transport conditions, predation mortality, and prey resources ... -
Feeding Preferences of Omnivorous Gizzard Shad as Influenced by Fish Size and Zooplankton Density
Yako, Lisa A.; Dettmers, John M.; Stein, Roy A. ( 1996 )In Ohio reservoirs, larval gizzard shad Dorosoma cepedianum less than 30 mm total length consume only zooplankton but frequently switch to detritus as they grow longer than 30 mm. However, in laboratory studies without ... -
First-Summer Survival of Largemouth Bass Cohorts: Is Early Spawning Really Best?
Pine, William E. III; Ludsin, Stuart A.; DeVries, Dennis R. ( 2000 )Previous work has demonstrated that survival of largemouth bass Micropterus salmoides through the first year of life can be size dependent, favoring larger individuals. Because size, diet biomass, lipid accumulation, and ... -
First-Year Recruitment of Largemouth Bass: The Interdependency of Early Life Stages
Ludsin, Stuart A.; DeVries, Dennis R. ( 1997 )Four early life events (i.e., hatching, the ontogenetic diet shift to piscivory, fall lipid accumulation, and the first winter) are conceptualized as being critical to 1st-yr recruitment success of largemouth bass ... -
Fish Cohort Dynamics: Application of Complementary Modeling Approaches
DeAngelis, Donald L.; Rose, Kenneth A.; Crowder, Larry B.; Marschall, Elizabeth A.; Lika, D. ( 1993 )The recruitment to the adult stock of a fish population is a function of both environmental conditions and the dynamics of juvenile fish cohorts. These dynamics can be quite complicated and involve the size structure of ... -
Food Consumption and Growth of Three Esocids: Field Tests of a Bioenergetic Model
Wahl, David H.; Stein, Roy A. ( 1991 )We quantified diet and compared field estimates of growth and daily ration with predictions from a bioenergetic model for young-of-year muskellunge Esox masquinongy, northern pike E. lucius. and tiger muskellunge E. ... -
Food Consumption by Larval Gizzard Shad: Zooplankton Effects and Implications for Reservoir Communities
Dettmers, John M.; Stein, Roy A. ( 1992 )Because peak abundance of larval gizzard shad Dorosoma cepedianum occurs simultaneously with the midsummer decline of macrozooplankton in Ohio reservoirs, we hypothesized that zooplanktivory by larval gizzard shad caused ... -
Food-web regulation by a planktivore: exploring the generality of the trophic cascade hypothesis
Stein, Roy A.; DeVries, Dennis R.; Dettmers, John M. ( 1995 )The trophic cascade hypothesis currently being tested in north temperate systems may not apply to open-water communities in lower latitude U.S. reservoirs. These reservoir communities differ dramatically from northern lakes ... -
Foraging in a patchy environment: prey-encounter rate and residence time distributions
Marschall, Elizabeth A.; Chesson, Peter L.; Stein, Roy A. ( 1989 )Small bluegill sunfish, Lepomis macrochirus, foraging among patches in the laboratory did not search systematically within a patch; their intercapture intervals did not differ from a model of random prey encounter within ... -
A Framework for Understanding Atlantic Salmon (Salmo salar) Life History
Marschall, Elizabeth A.; Quinn, Thomas P.; Roff, Derek A.; Hutchings, Jeffrey A.; Metcalfe, Neil B.; Bakke, Tor A.; Saunders, Richard L.; Poff, N. Leroy ( 1998 )We took a hierarchical approach to understanding Atlantic salmon (Salmo salar) life history patterns by first comparing salmonids to other teleosts, next comparing Atlantic salmon to other salmonids, and finally, ...