Patrick L Hudson
Science and Products
Eurytemora carolleeae in the Laurentian Great Lakes revealed by phylogenetic and morphological analysis
In the Laurentian Great Lakes, specimens of Eurytemora have been reported asEurytemora affinis since its invasion in the late 1950s. During an intensive collection of aquatic invertebrates for morphological and molecular identification in Western Lake Erie in 2012-2013, several specimens of Eurytemora were collected. Analysis of these specimens...
Vasquez, Adrian A.; Hudson, Patrick L.; Fujimoto, Masanori; Keeler, Kevin M.; Armenio, Patricia M.; Ram, Jeffrey L. Observations of cocooned Hydrobaenus (Diptera: Chironomidae) larvae in Lake Michigan
Larvae of the family Chironomidae have developed a variety of ways to tolerate environmental stress, including the formation of cocoons, which allows larvae to avoid unfavorable temperature conditions, drought, or competition with other chironomids. Summer cocoon formation by younger instars of the genus Hydrobaenus Fries allows...
Tucker, Taaja R.; Hudson, Patrick L.; Riley, Stephen Morphological identification and COI barcodes of adult flies help determine species identities of chironomid larvae (Diptera, Chironomidae)
Establishing reliable methods for the identification of benthic chironomid communities is important due to their significant contribution to biomass, ecology and the aquatic food web. Immature larval specimens are more difficult to identify to species level by traditional morphological methods than their fully developed adult counterparts, and few...
Failla, Andrew Joseph; Vasquez, Adrian Amelio; Hudson, Patrick L.; Fujimoto, Masanori; Ram, Jeffrey L. Additions to the aquatic diptera (Chaoboridae, Chironomidae, Culicidae, Tabanidae, Tipulidae) fauna of the White River National Wildlife Refuge, Arkansas
The dipteran fauna of Arkansas is generally poorly known. A previous study of the Aquatic macroinvertebrates of the White River National Wildlife Refuge, the largest refuge in Arkansas, reported only 12 diptera taxa out of 219 taxa collected (Chordas et al., 1996). Most of the dipterans from this study were identified only to the family level....
Chordas, Stephen W.; Hudson, Patrick L.; Chapman, Eric G. Habitat selection by two species of burrowing mayfly nymphs in the Les Cheneaux Islands region of northern Lake Huron
This study focused primarily on the habitat preferences of Hexagenia limbata andEphemera simulans, two species prevalent in northern Lake Huron, to gain a better understanding of the key components that determined their distribution and abundance. Both species preferred habitats based upon depth and sediment type. In addition, the...
Blouin, Marc A.; Hudson, Patrick; Chriscinske, Margret Occurrence of Ergasilus megaceros Wilson, 1916, in the sea lamprey and other fishes from North America
Ergasilus megaceros (Copepoda: Ergasilidae) was recovered from the nasal fossae (lamellae) of the olfactory sac in 1 (1.8%) of 56 sea lampreys, Petromyzon marinus Linne, 1758, collected in May 2002 from the Cheboygan River, Michigan. Although the sea lamprey is a new host record for E. megaceros, this fish species may not be a...
Muzzall, Patrick M.; Hudson, Patrick L. The Oligochaeta (Annelida, Clitellata) of the St. Lawrence Great Lakes region: An update
An updated oligochaete species list for the Great Lakes region is provided. The list was developed through the reexamination of the taxa reported in a previous report in 1980, addition of new taxa or records collected from the region since 1980, and an update of taxonomy commensurate with systematic and nomenclatural changes over the intervening...
Spencer, Douglas R.; Hudson, Patrick L. 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...
Hudson, Patrick L.; Bowen, Charles A. 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...
Wilcox, Douglas A.; Meeker, James E.; Hudson, Patrick L.; Armitage, Brian J.; Black, M. Glen; Uzarski, Donald G. New Midwestern state records of aquatic Hemiptera (Corixidae: Notonectidae)
Recent aquatic Hemiptera collections have yielded 15 new state records distributed among four midwestern States. These records include two species of water boatmen (Palmacorixa gillettei and Sigara mathesoni) new for Indiana, four water boatmen species (Cenocorixa utahensis, Corisella inscripta, Hesperocorixa laevigata, S. decorata), including...
Chordas, Stephen W.; Chapman, Eric G.; Hudson, Patrick L.; Chriscinske, Margret A.; Stewart, Richard L. Northwestward range extension for Diacyclops harryi (Crustacea: Copepoda)
A recent find of the groundwater-inhabiting copepod crustacean Diacyclops harryi extended the known range of this species far northwestward, to include northern Ohio and the drainage basin of the Laurentian Great Lakes. The species was previously collected in drainages of the Atlantic Slope from New York to North Carolina. Ostracodes...
Reid, Janet W.; Hudson, Patrick L.; Bowen, Charles A. Wetland macroinvertebrates of Prentiss Bay, Lake Huron, Michigan: diversity and functional group composition
The Great Lakes support many fish and waterbirds that depend directly or indirectly on coastal wetlands during some portion of their life cycle. It is known that macroinvertebrates make up an important part of wetland food webs and ecosystem function; however, our understanding of species distribution within and among wetlands has only recently...
Merritt, R.W.; Benbow, M.E.; Hudson, P.L.