Browsing Aquatic Ecology Laboratory Publications by Title
Now showing results 13-32 of 112
-
Changes in Prey Fish Populations in Western Lake Erie, 1969-88, as Related to Walleye, Stizostedion vitreum, Predation
Knight, Roger L.; Vondracek, Bruce ( 1993 )Relative abundance of the total prey fish community in the western basin of Lake Erie varied little from 1969 to 1988, but species composition changed significantly. Soft-rayed fishes such as emerald shiner, Notropis ... -
Characteristics of Muskellunge Spermatozoa I: Ultrastructure of Spermatozoa and Biochemical Composition of Semen
Lin, Feng; Liu, Li; Dabrowski, Konrad ( 1996 )We investigated the ultrastructure of spermatozoa and some physiological and biochemical parameters of semen in muskellunge Esox musquinongy. Ultrastructure of spermatozoa analyzed with scanning and transmission electron ... -
Characteristics of Muskellunge Spermatozoa II: Effects of Ions and Osmolality on Sperm Motility
Lin, Feng; Dabrowski, Konrad ( 1996 )We investigated the effects of potassium, sodium, glucose, and calcium concentrations, alone or in combinations, on sperm motility in muskellunge Esox masquinongy. Sperm motility was evaluated by the duration of sperm ... -
Cold, Northern Winters: The Importance of Temperature to Overwinter Mortality of Age-0 White Crappies
McCollum, Arthur B.; Bunnell, David B.; Stein, Roy A. ( 2003 )Survival during the first winter of life can influence the recruitment of many fishes. We used field sampling and laboratory experiments to explore the mechanisms underlying first winter growth and survival of white crappie ... -
Comparative Population Characteristics of Muskellunge (Esox masquinongy), Northern Pike (E. lucius), and Their Hybrid (E. masquinongy x E. lucius)
Wahl, David H.; Stein, Roy A. ( 1993 )We compared growth, survival, diet, and angler catch of muskellunge (Esox masquinongy), northern pike (E. lucius), and tiger muskellunge (E. masquinongy x E. lucius) through 5 yr after their introduction into three Ohio ... -
Comparative Vulnerability of Three Esocids to Largemouth Bass (Micropterus salmoides) predation
Wahl, David H.; Stein, Roy A. ( 1989 )We compared vulnerability among tiger muskellunge (Esox masquinongy x E. lucius) (TM), northern pike (E. lucius) (NP), and muskellunge (E. masquinongy) (M) to predation by largemouth bass (Micropterus salmoides). Equal ... -
Comparison of Foraging Performance of Diploid and Triploid Saugeyes (Sauger x Walleye)
Czesny, Sergiusz; Garcia-Abiado, Mary Ann; Dabrowski, Konrad; Bajer, Przemyslaw; Zalewski, Maciej ( 2002 )To evaluate the performance and quality of triploid saugeyes (female walleye Stizostedion vitreum x male sauger S. canadense), we compared their foraging behavior with that of diploid conspecifics. Triploidy was induced ... -
Competition between Larval Fishes in Reservoirs: The Role of Relative Timing of Appearance
Garvey, James E.; Stein, Roy A. ( 1998 )In small, hypereutrophic reservoirs (<100 ha; >100 mg total phosphorus/L), larval gizzard shad Dorosoma cepedianum and threadfin shad D. petenense (henceforth, shad) reach high densities in the limnetic zone, virtually ... -
Competition for Open-Access Resources: A Class Exercise that Demonstrates the Tragedy of the Commons
Johnson, Barry L.; Stein, Roy A. ( 1986 )Open-access resources, such as fisheries, often suffer from overexploitation due to competition among individuals. To help students appreciate this phenomenon, we developed a laboratory exercise that uses a computer model ... -
Complex Interactions between Fish and Zooplankton: Quantifying the Role of an Open-Water Planktivore
DeVries, Dennis R.; Stein, Roy A. ( 1992 )An open-water planktivore, the gizzard shad (Dorosoma cepedianum), can drive complex interactions among fish and zooplankton in Ohio reservoirs. In Kokosing Lake, crustacean zooplankton density declined to near zero ... -
Complex predator-prey interactions and predator intimidation among crayfish, piscivorous fish, and small benthic fish
Rahel, Frank J.; Stein, Roy A. ( 1988 )Predator-prey interactions were studied among a small prey fish (the johnny darter Etheostoma nigrum) and two predators (crayfish Orconectes rusticus and small-mouth bass Micropterus dolomieui) with complementary foraging ... -
Cooperative Management in the Great Lakes: Exploring Characteristics of Success
Krueger, Charles C.; Stein, Roy A. ( 2006 ) -
Cooperative Research in the Great Lakes: Exploring Characteristics of Success
Stein, Roy A.; Krueger, Charles C. ( 2006 ) -
The Cost of Dispersal: Predation as a Function of Movement and Site Familiarity in Ruffed Grouse
Yoder, James M.; Marschall, Elizabeth A.; Swanson, David A. ( 2004 )Ecologists often assume that dispersing individuals experience increased predation risk owing to increased exposure to predators while moving. To test the hypothesis that predation risk is a function of movement distance ... -
Cryopreservation of Muskellunge and Yellow Perch Semen
Glogowski, Jan; Ciereszko, Andrzej; Dabrowski, Konrad ( 1999 )Effect of four extenders on the success of cryopreservation of the semen of muskellunge Esox masquinongy and yellow perch Perca flavescens was tested. These extenders consisted of 0.45 M sucrose and were supplemented ... -
Damage to Cauliflower Coral by Monofilament Fishing Lines in Hawaii
Asoh, Kazue; Yoshikawa, Tomoko; Kosaki, Randall; Marschall, Elizabeth A. ( 2004-12 )Many fishing methods and gear types used in coral reefs cause physical damage to the reef substratum. Only recently have monofilament fishing lines been recognized as a cause of coral damage and death. We assessed the ... -
Density-dependent Survival as a Function of Size in Juvenile Salmonids in Streams
Marschall, Elizabeth A.; Crowder, Larry B. ( 1995 )The bioenergetic mechanism of density-dependent survival in juvenile stream salmonids was modeled using the relationship between density, food availability, and body size for a foodlimited stream system. With a ... -
Development and Use of Matrix Models to Evaluate Alternative Management Approaches for Restoring Biological Populations
Crowder, Larry B.; Heppell, Selina S.; Marschall, Elizabeth A. ( 1998-04 ) -
Direct and Indirect Effects of Fish Predation on the Replacement of a Native Crayfish by an Invading Congener
Mather, Martha E.; Stein, Roy A. ( 1993 )In Ohio streams, the crayfish Orconectes rusticus is replacing O. sanborni, and herein we test how predators influence this replacement. In a field survey, crayfish were scarce when fish were abundant, suggesting that ... -
A dynamic model of group-size choice in the coral reef fish Dascyllus albisella
Martinez, Felix A.; Marschall, Elizabeth A. ( 1999 )We developed a dynamic programming model of group size choice for settling coral reef fish to help understand variability in observed group sizes. Rather than calculating optimal group size, we modeled optimal choice and ...