Patrick L Hudson, PhD
Patrick Hudson is a Scientist Emeritus based in Ann Arbor, MI.
Science and Products
Publications by this scientist
Filter Total Items: 39
First record of Neoergasilus japonicus (Poecilostomatoida: Ergasilidae), a parasitic copepod new to the Laurentian Great Lakes
The parasitic copepod Neoergasilus japonicus, native to eastern Asia, was first collected from 4 species of fish (fathead minnow, Pimephales promelas; largemouth bass, Micropterus salmoides; pumpkinseed sunfish, Lepomis gibbosus; and yellow perch, Perca flavescens) in July 1994 in Saginaw Bay, Lake Huron, Michigan. Further sampling in the bay in 2001 revealed infections on 7 additional species (bl
Authors
Patrick L. Hudson, Charles A. Bowen
Hydrologic variability and the application of Index of Biotic Integrity metrics to wetlands: a Great Lakes evaluation
Interest by land-management and regulatory agencies in using biological indicators to detect wetland degradation, coupled with ongoing use of this approach to assess water quality in streams, led to the desire to develop and evaluate an Index of Biotic Integrity (IBI) for wetlands that could be used to categorize the level of degradation. We undertook this challenge with data from coastal wetlands
Authors
Douglas A. Wilcox, James E. Meeker, Patrick L. Hudson, Brian J. Armitage, M. Glen Black, Donald G. Uzarski
Caddisflies (Insecta: Trichoptera) of fringing wetlands of the Laurentian Great Lakes
Fringing wetlands of the Laurentian Great Lakes are subject to natural processes, such as water-level fluctuation and wave-induced erosion, and to human alterations. In order to evaluate the quality of these wetlands over space and time, biological communities are often examined. This paper reports on the use of adult caddisflies to evaluate fringing wetlands of Lake Huron, Lake Michigan, and La
Authors
Brian J. Armitage, Patrick L. Hudson, Douglas A. Wilcox
Predation on lake trout eggs and fry: A modeling approach
A general model was developed to examine the effects of multiple predators on survival of eggs and fry of lake trout, Salvelinus namaycush, associated with spawning reefs. Three kinds of predation were simulated: epibenthic egg predators consuming eggs on the substrate surface during spawning, interstitial egg predators that can move in rocky substrate and consume incubating eggs, and fry predato
Authors
Jacqueline F. Savino, Patrick L. Hudson, Mary C. Fabrizio, Charles A. Bowen
A list of Michigan Corixidae (Hemiptera) with four new state records from the Great Lakes of Michigan
Corisella tarsalis, Sigara lineata, Trichocorixa borealis, and Trichocorixa kanza were recently identified from Michigan and constitute new state records. These four species were collected from two of the Great Lakes or their connecting rivers and increase the number of corixids for Michigan to 47 species. We newly report the genus Corisella for Michigan. Although most abundant in the western Unit
Authors
Stephen W. Chordas, Patrick L. Hudson
Sieve efficiency in benthic sampling as related to chironomid head capsule width
The width of the head capsule in chironomid larvae is the most important morphometric character controlling retention of specimens in sieving devices. Knowledge of the range in size of these widths within any chironomid community is fundamental to sampling and interpreting the resulting data. We present the head capsule widths of 30 species of chironomids and relate their size distribution to loss
Authors
Patrick L. Hudson, Jean V. Adams
Cyclopoid and harpacticoid copepods of the Laurentian Great Lakes
Historical collections of cyclopoid and harpacticoid copepod crustaceans in the Great Lakes have mainly been based on samples taken with plankton nets in deeper waters (>5 m). Of the non-calanoid copepod species known from the Great Lakes, 58 or 64 live primarily on or in the sediments and rarely are collected in plankton samples. Because of their small size, they are rarely retained in the coar
Authors
Patrick L. Hudson, Janet W. Reid, Lynn T. Lesko, James H. Selgeby
Conditions for the return and simulation of the recovery of burrowing mayflies in western Lake Erie
In the 1950s, burrowing mayflies, Hexagenia spp. (H. limbata and H. rigida), were virtually eliminated from the western basin of Lake Erie (a 3300 km2 area) because of eutrophication and pollution. We develop and present a deterministic model for the recolonization of the western basin by Hexagenia to pre-1953 densities. The model was based on the logistic equation describing the population growth
Authors
Cynthia S. Kolar, Patrick L. Hudson, Jacqueline F. Savino
A revised annotated checklist of the Chironomidae (Insecta: Diptera) of the southeastern United States
A revised annotated checklist for the chironomid midges (Diptera: Chironomidae) of the southeastern United States is presented that includes the states of Alabama, Florida, Georgia, North Carolina, South Carolina, and Tennessee. Much of the information concerns occurrence and habitat preference records based upon the authors' data, as well as published and unpublished data. Some information is als
Authors
Broughton A. Caldwell, Patrick L. Hudson, David R. Lenat, David Smith
Feeding competition between larval lake whitefish and lake herring
The potential for competition for food between larval lake whitefish (Coregonus clupeaformis) and lake herring (C. artedi) 1- to 8-wk of age was explored in a series of 1-h laboratory feeding studies. Feeding started at 2-wk post-hatch. Learning and fish size appear to be more important than prey density at the onset of feeding. Species differed in their feeding behavior and consumption noticeably
Authors
Jacqueline F. Savino, Patrick L. Hudson
Baseline risk assessment for aquatic life for the Buffalo River, New York, Area of Concern
The Great Lakes National Program Office of the U.S. Environmental Protection Agency initiated the Assessment and Remediation of Contaminated Sediments (ARCS) program to address concerns of environmental degradation at 43 Areas of Concern in the Great Lakes. In our first report (Passino-Reader et al. 1992), we developed a generic approach for baseline hazard evaluation of aquatic life in the Great
Authors
Dora R. Passino-Reader, Patrick L. Hudson, James P. Hickey
Predator-prey relations and competition for food between age-0 lake trout and slimy sculpins in the Apostle Island region of Lake Superior
Slimy sculpins (Cottus cognatus) are an important component of the fish community on reefs and adjacent nursery areas of the Great Lakes and overlap spatially with age-0 lake trout (Salvelinus namaycush). Important interactions between these fishes are possible during the lake trout's first year of life, which could include predation on each other's eggs and larvae, and competition for food resour
Authors
Patrick L. Hudson, Jacqueline F. Savino, Charles R. Bronte
Science and Products
- Publications
Publications by this scientist
Filter Total Items: 39First record of Neoergasilus japonicus (Poecilostomatoida: Ergasilidae), a parasitic copepod new to the Laurentian Great Lakes
The parasitic copepod Neoergasilus japonicus, native to eastern Asia, was first collected from 4 species of fish (fathead minnow, Pimephales promelas; largemouth bass, Micropterus salmoides; pumpkinseed sunfish, Lepomis gibbosus; and yellow perch, Perca flavescens) in July 1994 in Saginaw Bay, Lake Huron, Michigan. Further sampling in the bay in 2001 revealed infections on 7 additional species (blAuthorsPatrick L. Hudson, Charles A. BowenHydrologic variability and the application of Index of Biotic Integrity metrics to wetlands: a Great Lakes evaluation
Interest by land-management and regulatory agencies in using biological indicators to detect wetland degradation, coupled with ongoing use of this approach to assess water quality in streams, led to the desire to develop and evaluate an Index of Biotic Integrity (IBI) for wetlands that could be used to categorize the level of degradation. We undertook this challenge with data from coastal wetlandsAuthorsDouglas A. Wilcox, James E. Meeker, Patrick L. Hudson, Brian J. Armitage, M. Glen Black, Donald G. UzarskiCaddisflies (Insecta: Trichoptera) of fringing wetlands of the Laurentian Great Lakes
Fringing wetlands of the Laurentian Great Lakes are subject to natural processes, such as water-level fluctuation and wave-induced erosion, and to human alterations. In order to evaluate the quality of these wetlands over space and time, biological communities are often examined. This paper reports on the use of adult caddisflies to evaluate fringing wetlands of Lake Huron, Lake Michigan, and LaAuthorsBrian J. Armitage, Patrick L. Hudson, Douglas A. WilcoxPredation on lake trout eggs and fry: A modeling approach
A general model was developed to examine the effects of multiple predators on survival of eggs and fry of lake trout, Salvelinus namaycush, associated with spawning reefs. Three kinds of predation were simulated: epibenthic egg predators consuming eggs on the substrate surface during spawning, interstitial egg predators that can move in rocky substrate and consume incubating eggs, and fry predatoAuthorsJacqueline F. Savino, Patrick L. Hudson, Mary C. Fabrizio, Charles A. BowenA list of Michigan Corixidae (Hemiptera) with four new state records from the Great Lakes of Michigan
Corisella tarsalis, Sigara lineata, Trichocorixa borealis, and Trichocorixa kanza were recently identified from Michigan and constitute new state records. These four species were collected from two of the Great Lakes or their connecting rivers and increase the number of corixids for Michigan to 47 species. We newly report the genus Corisella for Michigan. Although most abundant in the western UnitAuthorsStephen W. Chordas, Patrick L. HudsonSieve efficiency in benthic sampling as related to chironomid head capsule width
The width of the head capsule in chironomid larvae is the most important morphometric character controlling retention of specimens in sieving devices. Knowledge of the range in size of these widths within any chironomid community is fundamental to sampling and interpreting the resulting data. We present the head capsule widths of 30 species of chironomids and relate their size distribution to lossAuthorsPatrick L. Hudson, Jean V. AdamsCyclopoid and harpacticoid copepods of the Laurentian Great Lakes
Historical collections of cyclopoid and harpacticoid copepod crustaceans in the Great Lakes have mainly been based on samples taken with plankton nets in deeper waters (>5 m). Of the non-calanoid copepod species known from the Great Lakes, 58 or 64 live primarily on or in the sediments and rarely are collected in plankton samples. Because of their small size, they are rarely retained in the coarAuthorsPatrick L. Hudson, Janet W. Reid, Lynn T. Lesko, James H. SelgebyConditions for the return and simulation of the recovery of burrowing mayflies in western Lake Erie
In the 1950s, burrowing mayflies, Hexagenia spp. (H. limbata and H. rigida), were virtually eliminated from the western basin of Lake Erie (a 3300 km2 area) because of eutrophication and pollution. We develop and present a deterministic model for the recolonization of the western basin by Hexagenia to pre-1953 densities. The model was based on the logistic equation describing the population growthAuthorsCynthia S. Kolar, Patrick L. Hudson, Jacqueline F. SavinoA revised annotated checklist of the Chironomidae (Insecta: Diptera) of the southeastern United States
A revised annotated checklist for the chironomid midges (Diptera: Chironomidae) of the southeastern United States is presented that includes the states of Alabama, Florida, Georgia, North Carolina, South Carolina, and Tennessee. Much of the information concerns occurrence and habitat preference records based upon the authors' data, as well as published and unpublished data. Some information is alsAuthorsBroughton A. Caldwell, Patrick L. Hudson, David R. Lenat, David SmithFeeding competition between larval lake whitefish and lake herring
The potential for competition for food between larval lake whitefish (Coregonus clupeaformis) and lake herring (C. artedi) 1- to 8-wk of age was explored in a series of 1-h laboratory feeding studies. Feeding started at 2-wk post-hatch. Learning and fish size appear to be more important than prey density at the onset of feeding. Species differed in their feeding behavior and consumption noticeablyAuthorsJacqueline F. Savino, Patrick L. HudsonBaseline risk assessment for aquatic life for the Buffalo River, New York, Area of Concern
The Great Lakes National Program Office of the U.S. Environmental Protection Agency initiated the Assessment and Remediation of Contaminated Sediments (ARCS) program to address concerns of environmental degradation at 43 Areas of Concern in the Great Lakes. In our first report (Passino-Reader et al. 1992), we developed a generic approach for baseline hazard evaluation of aquatic life in the GreatAuthorsDora R. Passino-Reader, Patrick L. Hudson, James P. HickeyPredator-prey relations and competition for food between age-0 lake trout and slimy sculpins in the Apostle Island region of Lake Superior
Slimy sculpins (Cottus cognatus) are an important component of the fish community on reefs and adjacent nursery areas of the Great Lakes and overlap spatially with age-0 lake trout (Salvelinus namaycush). Important interactions between these fishes are possible during the lake trout's first year of life, which could include predation on each other's eggs and larvae, and competition for food resourAuthorsPatrick L. Hudson, Jacqueline F. Savino, Charles R. Bronte