Isolation of viral hemorrhagic septicemia virus from Pacific cod Gadus macrocephalus in Prince William Sound Alaska
T.R. Meyers, J. Sullivan, E. Emmenegger, J. Follett, S. Short, W. Batts, J. R. Winton
1991, Conference Paper, Proceedings of the second international symposium on viruses of lower vertebrates
No abstract available...
Production of Hexagenia limbata nymphs in contaminated sediments in the Upper Great Lakes connecting channels
Thomas A. Edsall, Bruce A. Manny, Donald W. Schloesser, Susan J. Nichols, Anthony M. Frank
1991, Hydrobiologia (219) 353-361
In April through October 1986, we sampled sediments and populations of nymphs of the burrowing mayfly, Hexagenia limbata (Serville), at 11 locations throughout the connecting channels of the upper Great Lakes, to determine if sediment contaminants adversely affected nymph production. Production over this period was high (980 to 9231 mg...
A line transect model for aerial surveys
Pham Xuan Quang, Richard B. Lanctot
1991, Biometrics (47) 1089-1102
We employ a line transect method to estimate the density of the common and Pacific loon in the Yukon Flats National Wildlife Refuge from aerial survey data. Line transect methods have the advantage of automatically taking into account “visibility bias” due to detectability difference of animals at different distances from...
Distribution and dispersal of the zebra mussel (Dreissena polymorpha) in the Great Lakes region
Ronald W. Griffiths, Donald W. Schloesser, Joseph H. Leach, William P. Kovalak
1991, Canadian Journal of Fisheries and Aquatic Sciences (48) 1381-1388
Dreissena polymorpha (Pallas), a small mussel common throughout most of Europe, was discovered in June of 1988 in the southern part of Lake St. Clair. Length–frequency analyses of populations from the Great Lakes and review of historical benthic studies suggest that the mussel was introduced into Lake St. Clair in late...
Food of blueback herring and threadfin shad in Jocassee Reservoir, South Carolina
Bruce M. Davis, Jeffrey W. Foltz
1991, Transactions of the American Fisheries Society (120) 605-613
Threadfin shad Dorosoma petenense and blueback herring Alosa aestivalis were introduced into Jocassee Reservoir, South Carolina, in the early 1970s as prey for large piscivores. To assess the potential for trophic competition between these clupeids, we examined their diets and the extent of diet overlap in May, August, and December 1982 and February 1983....
Influence of nearshore structure on growth and diets of yellow perch (Perca flavescens) and white perch (Morone americana) in Mexico Bay, Lake Ontario
Robert J. Danehy, Neil H. Ringler, John E. Gannon
1991, Journal of Great Lakes Research (17) 183-193
The growth diets of 969 yellow perch (Perca flavescens) and white perch (Morone americana) caught at 3.3 and 7.0 m depths were compared between two cobble/rubble shoals and two featureless sand sites in Mexico Bay, eastern Lake Ontario during 1981. The growth rate of both species was significantly greater for...
Distribution of Hexagenia nymphs and visible oil in sediments of the Upper Great Lakes connecting channels
Donald W. Schloesser, Thomas A. Edsall, Bruce A. Manny, Susan J. Nichols
1991, Hydrobiologia (219) 345-352
As part of the study of the Upper Great Lakes Connecting Channels sponsored by the U.S. Environmental Protection Agency, the U.S. Fish and Wildlife Service examined the occurrence ofHexagenia nymphs and visible oil in sediments at 250 stations throughout the St. Marys River and the St. Clair-Detroit River system...
System-wide significance of predation on juvenile salmonids in the Columbia and Snake River reservoirs. Annual report 1991
R.S. Shively, R.A. Tabor, R.D. Nelle, D.B. Jepsen, J.H. Petersen, S.T. Sauter, T.P. Poe
1991, Report
No abstract available ...
Recent advances in detection and control of infectious hematopoietic necrosis virus in aquaculture
James R. Winton
1991, Annual Review of Fish Diseases (1) 83-93
Infectious hematopoietic necrosis (IHN) is one of the most important viral diseases of salmon and trout reared in culture. The disease remains untreatable with avoidance being the only control measure. Much has been learned about the chemical, physical, and serological characteristics of the rhabdovirus causing IHN, but critical gaps exist...
Test of concept to improve fish guidance using induced water currents at Cowlitz Falls Dam, Washington, Annual Report for 1991
T.J. Darland, S.D. Evans, D.W. Rondorf, G.L. Rutz, D.H. Fiel, N.S. Adams
1991, Report
No abstract available...
A sigmoid model to predict gastric evacuation rates of smallmouth bass Micropterus dolomieui fed juvenile salmon
Jean Beyer Rogers, Craig C. Burley
1991, Canadian Journal of Fisheries and Aquatic Sciences (48) 933-937
Laboratory experiments were conducted to examine the effects of water temperature, predator size, prey size, and prey number on gastric evacuation of smallmouth bass (Micropterus dolomieui) fed juvenile salmon. The smallmouth bass were allowed to feed voluntarily after 24–48 h of starvation and stomachs were pumped at intervals of 1–4 h until...
Demonstration of the salmonid humoral response to Renibacterium salmoninarum using a monoclonal antibody against salmonid immunoglobulin
J. L. Bartholomew, M.R. Arkoosh, J. S. Rohovec
1991, Journal of Aquatic Animal Health (3) 254-259
The specificity of the antibody response of salmonids to Renibacterium salmoninarum antigens was demonstrated by western blotting techniques that utilized a monoclonal antibody against salmonid immunoglobulin. In this study, the specificity of the response in immunized chinook salmon Oncorhynchus tshawytschawas compared with the response in naturally infected chinook salmon and...
Inactivation of infectious hematopoietic necrosis virus by low levels of iodine
William N. Batts, Marsha L. Landolt, James R. Winton
1991, Applied and Environmental Microbiology (57) 1379-1385
The fish rhabdovirus infectious hematopoietic necrosis virus (IHNV) was rapidly inactivated by extremely low concentrations of iodine in water. A 99.9% virus reduction was obtained in 7.5 s when virus (105PFU/ml) and iodine (0.1 mg/liter, final concentration) were combined in distilled-deionized or hatchery water. Iodine efficacy decreased at pHs greater...
Feeding of predaceous fishes on out-migrating juvenile-salmonids in John Day Reservoir, Columbia River
Thomas P. Poe, Hal C. Hansel, S. Vigg, D.E. Palmer, L.A. Prendergast
1991, Transactions of the American Fisheries Society (120) 405-420
Diets of northern squawfish Ptychocheilus oregonensis, smallmouth bass Micropterus dolomieu, walleye Stizostedion vitreum, and channel catfish Ictalurus punctatus from John Day Reservoir were examined to determine the extent of predation on juvenile salmonids during seaward migrations of the salmonids during April–August 1983–1986. Juvenile Pacific salmon Oncorhynchus spp. and steelhead O....
Comparison of genome size and synthesis of structural proteins of Hirame Rhabdovirus, infectious hematopoietic necrosis virus, and viral hemorrhagic Septicemia virus
Toyohiko Nishizawa, Mamoru Yoshimizu, James R. Winton, Takahisa Kimura
1991, Fish Pathology (26) 77-81
Genomic RNA was extracted from purified virions of hirame rhabdovirus (HRV), infectious hematopoietic necrosis virus (IHNV), and viral hemorrhagic septicemia virus (VHSV). The full-length RNA was analyzed using formaldehyde agarose gel electrophoresis followed by ethidium bromide staining. Compared with an internal RNA size standard, all three viral genomic RNAs appeared...
Characterization of structural proteins of hirame rhabdovirus, HRV
Toyohiko Nishizawa, Mamoru Yoshimizu, James Winton, Winfried Ahne, Takahisa Kimura
1991, Diseases of Aquatic Organisms (10) 167-172
Structural proteins of hirame rhabdovirus (HRV) were analyzed by SDS-polyacrylarnide gel electrophoresis, western blotting, 2-dimensional gel electrophoresis, and Triton X-100 treatment. Purified HRV virions were composed of: polymerase (L), glycoprotein (G), nucleoprotein (N), and 2 matrix proteins (M1 and M2). Based upon their relative mobilities, the estimated molecular weights...
Status and habitat requirements of white sturgeon populations in the Columbia River downstream from McNary Dam
Allen I. Miller, P.J. Anders, M.J. Parsley, C.R. Sprague, J.J. Warren, L.G. Beckman
1991, Report, Status and habitat requirements of white sturgeon populations in the Columbia River downstream from McNary Dam
No abstract available...
Variation in feeding, aggression, and position choice between hatchery and wild cutthroat trout in an artificial stream
Matthew G. Mesa
1991, Transactions of the American Fisheries Society (120) 723-727
I compared feeding, aggressive behavior, and spatial distribution of differently ranked individuals of hatchery and wild coastal cutthroat trout Oncorhynchus clarki clarki in an artificial stream. Both hatchery and wild groups established stable dominance hierarchies that seemed to be based on size differences. Hatchery and wild fish within a hierarchical...
Infectious hematopoietic necrosis (IHN) and viral hemorrhagic septicemia (VHS): Detection of the trout antibodies to the causative viruses by means of plaque neutralization, immunofluorescence, and enzyme-linked immunosorbent assay
P. E. Vestergard Jorgensen, N.J. Olesen, N. Lorenzen, J. R. Winton, S.S. Ristow
1991, Journal of Aquatic Animal Health (3) 100-108
Sera collected from cultured rainbow trout Oncorhynchus mykiss surviving outbreaks of infectious hematopoietic necrosis (IHN) or viral hemorrhagic septicemia (VHS) were examined for the presence of antibodies to both of the causative viruses, infectious hematopoietic necrosis virus (IHNV) and Egtved virus (viral hemorrhagic septicemia virus: VHSV). Sera were screened with...
Physiological response of largemouth bass to angling stress
A. Wayne Gustaveson, Richard S. Wydoski, Gary A. Wedemeyer
1991, Transactions of the American Fisheries Society (120) 629-636
The physiological effects of catch-and-release fishing on largemouth bass Micropterus salmoides from Lake Powell and Mantua Reservoir, Utah, were evaluated, and an estimate of the time needed for recovery from hooking stress was obtained. Fatigue in Lake Powell fish, as indicated by elevated blood lactate, was directly proportional to hooking...
Estimated loss of juvenile salmonids to predation by northern squawfish, walleyes, and smallmouth bass in John Day Reservoir, Columbia River
Bruce E. Rieman, Raymond C. Beamesderfer, Steven Vigg, Thomas P. Poe
1991, Transactions of the American Fisheries Society (120) 448-458
We estimated the loss of juvenile salmonids Oncorhynchus spp. to predation by northern squawfish Ptychocheilus oregonensis, walleyes Stizostedion vitreum, and smallmouth bass Micropterus dolomieu in John Day Reservoir during 1983–1986. Our estimates were based on measures of daily prey consumption, predator numbers, and numbers of juvenile salmonids entering the reservoir...
Effects of temperature on early-life-history stages of California halibut Paralichthys californicus
D.M. Gadomski, S.M. Caddell
1991, Fishery Bulletin (89) 567-576
- Laboratory experiments were conducted to determine how growth and survival of earlylife-history stages of California halibut Pamlichthys californicus are influenced by temperature, and how optimal temperature ranges may change with ontogeny. As halibut developed from eggs to juveniles, highest survival occurred at increasingly higher temperature ranges. Within tolerance limits,...
Heterosis and outbreeding depression: A multi-locus model and an application to salmon production
John M. Emlen
1991, Fisheries Research (12) 187-212
Both artificial propagation and efforts to preserve or augment natural populations sometimes involve, wittingly or unwittingly, the mixing of different gene pools. The advantages of such mixing vis-à-vis the alleviation of inbreeding depression are well known. Acknowledged, but less well understood, are the complications posed by outbreeding depression. This paper...
Rates of consumption of juvenile salmonids and alternative pray fish by northern squawfish, walleyes, smallmouth bass, and channel catfish in John Day Reservoir, Columbia River
Steven Vigg, Thomas P. Poe, Linda A. Prendergast, Hal C. Hansel
1991, Transactions of the American Fisheries Society (120) 421-438
Adult northern squawfish Ptychocheilus oregonensis, walleyes Stizostedion vitreum, smallmouth bass Micropterus dolomieu, and channel catfish Ictalurus punctatus were sampled from four regions of John Day Reservoir from April to August 1983–1986 to quantify their consumption of 13 species of prey fish, particularly seaward-migrating juvenile Pacific salmon and steelhead (Oncorhynchus spp.)....
Contaminated sediments from tributaries of the Great Lakes: Chemical characterization and carcinogenic effects in medaka (Oryzias latipes)
John M. Besser, Christopher J. Schmitt, John C. Harshbarger, Paul H. Peterman, Jon A. Lebo
1991, Archives of Environmental Contamination and Toxicology (21) 17-34
Sediments from four inshore industrial sites and a reference site in the Great Lakes were extracted with organic solvents to produce a crude extract, which was separated on alumina into two fractions: predominantly polycyclic aromatic hydrocarbons; and predominantly nitrogencontaining polycyclic aromatic compounds. Crude extracts were redissolved in acetone and analyzed...
