Mount Clemens, MI, United States
Mount Clemens, MI, United States

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Muzzall P.M.,Michigan State University | Thomas M.V.,Lake St Clair Fisheries Research Station
Comparative Parasitology | Year: 2016

A total of 1,270 cyprinids consisting of emerald shiners, Notropis atherinoides Rafinesque, 1818 spottail shiners, Notropis hudsonius (Clinton, 1824) mimic shiners, Notropis volucellus (Cope, 1865) and sand shiners, Notropis stramineus (Cope, 1865) (Cyprinidae) collected in 2009-2013 from Saginaw Bay and Port Sanilac, Lake Huron, and Lake St. Clair, Michigan, U.S.A., were examined for the nonnative Asian fish tapeworm, Bothriocephalus acheilognathi. The prevalences, mean intensities, and mean abundances of this cestode in the cyprinid species varied from 0 to 28%, 0.0 to 5.8, and 0.00 to 1.11, respectively. The infection values of B. acheilognathi were higher in Notropis spp. from Saginaw Bay than in Lake St. Clair. The proportions of infected and uninfected emerald shiners increased significantly from 2009 through 2011 and 2013 in Saginaw Bay. Emerald and mimic shiners are new host records for B. acheilognathi. Saginaw Bay and Port Sanilac, Lake Huron, and Lake St. Clair are new locality records for B. acheilognathi. The distribution of B. acheilognathi now extends north into Lake St. Clair and Lake Huron since its original detection in the Detroit River. Further, since Saginaw Bay and Lake St. Clair are important sources of wild-caught baitfish for the retail baitfish industry, this range extension of the Asian fish tapeworm raises fish management concerns for its spread into other waters of the state through bait bucket transfers. © 2016 The Helminthological Society of Washington.


Gendron A.D.,Environment Canada | Marcogliese D.J.,Environment Canada | Thomas M.,Lake St Clair Fisheries Research Station
Biological Invasions | Year: 2012

There is increasing evidence that parasitism represents an unpredictable dimension of the ecological impacts of biological invasions. In addition to the risk of exotic pathogen transmission, other mechanisms such as parasite-release, could contribute to shaping the relationship between introduced species and native communities. In this study, we used the Eurasian round goby (Neogobius menalostomus) in the Great Lakes-St. Lawrence River ecosystem to further explore these ideas. As predicted by the parasite-release hypothesis, recently established populations of round goby were parasitized by a depauperate community of generalist helminths (8 taxa), all commonly found in the St. Lawrence River. In comparison, two native species, the logperch (Percina caprodes) and spottail shiner (Notropis hudsonius), were the hosts of 25 and 24 taxa respectively. Round gobies from each of 3 sampled localities were also less heavily infected than both indigenous species. This is in contrast to what is observed in round goby's native range where the species is often the most parasitized among gobid competitors. This relative difference in parasite pressure could enhance its competitiveness in the introduced range. However, our study of an older population of round goby in Lake St. Clair suggests that this advantage over native species could be of short duration. Within 15 years, the parasite abundance and richness in the round goby has more than doubled whereas the number of parasite species per fish has increased to levels of those typical of fish indigenous to the St. Lawrence-Great Lakes watershed. © 2011 Her Majesty the Queen in Right of Canada.


Boase J.C.,U.S. Fish and Wildlife Service | Diana J.S.,University of Michigan | Thomas M.V.,Lake St Clair Fisheries Research Station | Chiotti J.A.,U.S. Fish and Wildlife Service
Journal of Applied Ichthyology | Year: 2011

Lake Sturgeon Acipenser fulvescens were studied to determine spawning migrations, seasonal movement patterns and habitat use in the St. Clair River and Lake St. Clair. Ultrasonic transmitters were successfully implanted in 15 sexually mature adult fish during spawning periods in 1997-1999. Telemetry data, along with GIS software, were used to determine where Lake Sturgeon resided in Lake St. Clair following implantation. Movement information collected from tagged Lake Sturgeon from May 1997-October 2000 revealed three patterns. Following implantation, 73% of the fish (four females and seven males) moved downstream from the St. Clair River to Lake St. Clair, 13% of the fish (one female and one male) were presumed to have moved upriver to Lake Huron, and 20% of the fish (one female and two males) remained in or returned to the St. Clair River for at least 1year. The fish that moved into Lake St. Clair were found most often in an area near the St. Clair River Delta, at depths of 4-6m (>98% of observations). Fish that remained in the St. Clair River were commonly found (>84%) at depths between 9 and 18m. Four females and three males returned to the spawning site in the St. Clair River in subsequent spawning seasons. Females returned at intervals of 1-3years and males at 1-2years. For all invertebrates tested, only Ephemeroptera density was a significant predictor of Lake Sturgeon presence/absence in Lake St. Clair. © 2011 Blackwell Verlag, Berlin.


Muzzall P.M.,Michigan State University | Thomas M.V.,Lake St Clair Fisheries Research Station
Comparative Parasitology | Year: 2015

One-hundred trout-perch, Percopsis omiscomaycus, collected from Saginaw Bay, Lake Huron in September 2011, were examined for parasites. Seven parasite species (1 Myxozoa: Myxobolus procercum; 1 Ciliophora: Trichodina sp.; 3 Digenea: Allacanthochasmus sp., Neochasmus sp., Crepidostomum percopsisi; 1 Nematoda: Camallanus oxycephalus; 1 Copepoda: Ergasilus luciopercarum) were found to infect trout-perch. Crepidostomum percopsisi had the highest prevalence (98%), mean intensity (5.3), and mean abundance (5.2). Ergasilus luciopercarum had a prevalence of 46% and a mean intensity of 2.6. Myxobolus procercum and Allacanthochasmus sp.-Neochasmus sp. (considered 1 taxonomic group) each had a prevalence of 22%. Trichodina sp. and C. oxycephalus infrequently infected trout-perch. Gravid individuals of only C. percopsisi and E. luciopercarum were found. Trichodina sp., Allacanthochasmus sp., Neochasmus sp., C. oxycephalus, and E. luciopercarum are reported for the first time from trout-perch in Lake Huron. © 2015 The Helminthological Society of Washington.


Pothoven S.A.,National Oceanic and Atmospheric Administration | Hook T.O.,Purdue University | Nalepa T.F.,National Oceanic and Atmospheric Administration | Thomas M.V.,Lake St Clair Fisheries Research Station | Dyble J.,National Oceanic and Atmospheric Administration
Aquatic Ecology | Year: 2013

We evaluated the response of the zooplankton community Saginaw Bay, Lake Huron to the disappearance of the planktivore alewife Alosa pseudoharengus using data collected in 1991-1996 (pre alewife decline) and 2009-2010 (post alewife decline). Bosmina longirostris, Diaptomidae, Cyclops, and Daphnia galeata contributed greatly to the separation of the two time periods with Diaptomidae and D. galeata increasing and Cyclops and B. longirostris decreasing, although B. longirostris remained the dominant species. Peak densities of zooplankton occurred in early summer (June) in the 1990s and in early fall (October) in 2009-2010. For the analysis of environmental variables on a bay-wide, annual basis, abundance of alewife, age-0 yellow perch Perca flavescens and Bythotrephes captured much of the variation in annual zooplankton community structure. Abundances of Bythotrephes and age-0 yellow perch were both higher in 2009-2010 than in 1991-1996. Some changes such as increasing proportions of calanoid copepods reflect a more oligotrophic community and are potentially indicative of resource-driven changes rather than direct or indirect impacts of the alewife disappearance. © 2012 Springer Science+Business Media Dordrecht (outside the USA).


Zorn T.G.,Marquette Fisheries Research Station | Wills T.C.,Lake St Clair Fisheries Research Station
North American Journal of Fisheries Management | Year: 2012

Excess sand bedload can significantly degrade salmonid habitat and populations. Successful use of sediment traps to restore habitat and salmonid populations on two Michigan streams in the early 1980s led to application of traps at well over 100 coldwater streams in Michigan and rivers throughout the USA within a decade. Unfortunately, little quantitative evaluation has occurred other than anecdotal observations for some traps. We conducted a broad-scale survey of 65 Michigan stream reaches with sediment traps by collecting data along transects upstream and downstream of the traps to assess downstream changes in substrate composition, channel depth, and channel stability in response to sediment traps. We found that recent applications of sediment traps (usually as stand-alone instream habitat treatments) had no significant effect on substrate, thalweg depth, or bank stability conditions in the reaches studied. Using reach-based estimates of specific stream power at the 10% annual exceedence flow, we identified areas where sediment traps could potentially destabilize channels. Specific stream power estimates were positively correlated with the preponderance of gravel and coarser substrate in stream reaches. Our study and previous assessments of sediment traps suggest that managers carefully consider their river and all potential management options when deciding if sediment traps will provide the best return on their investment. © American Fisheries Society 2012.


Schulz C.A.,Michigan State University | Thomas M.V.,Lake St Clair Fisheries Research Station | Fitzgerald S.,Michigan State University | Faisal M.,Michigan State University
Comparative Parasitology | Year: 2011

In order to identify leech species prevalent in Lake St. Clair, Michigan, U.S.A,. and understand their effect on fish hosts, fish were collected during May 2006 and 2007 from Anchor Bay, Lake St. Clair in the Laurentian Great Lakes Basin. Throughout the study, 2,117 fish from 21 species were examined for the presence of leeches. Overall, 1,064 leeches were collected from 165 individual fish and identified morphologically. Hosts included the channel catfish, freshwater drum, northern pike, northern shorthead redhorse sucker, quillback sucker, rock bass, smallmouth bass, walleye, and yellow perch. Leeches attached to hosts had a prevalence of 7.79%, with a mean intensity of 6.45 leeches/infected fish and an abundance of 0.50 leeches/examined fish. Collected leeches were identified as Actinobdella pediculata (Glossiphonidae), Placobdella montifera (Glossiphonidae), and Myzobdella lugubris (Piscicolidae), which was the most commonly occurring species. The freshwater drum had the highest prevalence, mean intensity, and abundance of leeches as a host for all leech species, as well as for A. pediculata and M. lugubris. Placobdella montifera was rare in occurrence, with little variation in host prevalence, mean intensity, or abundance. This is also the first record of the northern shorthead redhorse sucker as a host for A. pediculata. Leeches were found attached to various sites on the hosts, but occurred primarily on the pectoral fins. Gross inspection showed that leech attachment occurred in high intensities associated with necrotic areas and hemorrhages, and also caused swelling and prevented the opercular flap from closing. Histopathologically, leech attachment caused an extensive inflammatory response, necrosis of the muscle tissue, and edema. Results indicate that there are 3 predominant leech species parasitizing fish hosts in Lake St. Clair, that the leeches have preferred hosts and attachment locations, and that they cause damage to the underlying skin and musculature at the site of attachment. © 2011 The Helminthological Society of Washington.


Ivan L.N.,Purdue University | Ivan L.N.,University of Michigan | Fielder D.G.,Alpena Great Lakes Fisheries Research Station | Thomas M.V.,Lake St Clair Fisheries Research Station | Hook T.O.,Purdue University
Journal of Great Lakes Research | Year: 2014

Many aquatic ecosystems experience concurrent anthropogenic stressors that can have complex impacts on fish communities. Limited data and temporal associations among environmental stressors may confound the ability to attribute community-level impacts to single or multiple stressors. Instead, quantitative description of temporal changes in fish communities may shed light on the cumulative and individual impacts of diverse stressors. Saginaw Bay, Lake Huron, has experienced diverse anthropogenic stressors that have been inconsistently quantified over time. We used resampling and multivariate approaches to analyze long-term trawl data to describe how fish community patterns changed in Saginaw Bay from 1970-2011. Total, native, and moderately tolerant fish species richness generally increased from 1970-2011. Dynamic factor analysis and nonmetric multidimensional scaling revealed that fish community structure changed from 1970-2011 and that relative abundances of many fish species increased. In general, increases in richness and CPUE were correlated with decreases in total phosphorus, chl a, and water levels. In addition, breakpoint analyses revealed shifts in species richness in the mid-1980s and 1999. Temporal patterns are consistent with the hypothesis that the Saginaw Bay fish community has changed from one dominated by species tolerant of eutrophy to one with more sensitive species, likely a response to decreased phosphorous loading and resulting changes in water quality. More recently (1999-2011), richness and relative abundance of many fish species in Saginaw Bay declined, a pattern potentially reflective of larger food-web transitions in both Saginaw Bay and open Lake Huron. © 2014 International Association for Great Lakes Research.


Staton J.M.,Purdue University | Roswell C.R.,Purdue University | Fielder D.G.,Alpena Fisheries Research Station | Thomas M.V.,Lake St Clair Fisheries Research Station | And 2 more authors.
Journal of Great Lakes Research | Year: 2014

In Saginaw Bay, Lake Huron, yellow perch (Perca flavescens) constitute an ecologically important component of the ecosystem and support both recreational and commercial fisheries. Over the past 40years, Saginaw Bay has experienced multiple ecosystem-level changes (e.g., non-indigenous species introductions, reduced nutrient loading and variable temperatures). In turn, abundances and growth rates of yellow perch and their predators and prey have fluctuated. Recent changes to Saginaw Bay and Lake Huron foodwebs have potential to influence prey composition and subsequently, growth and condition for yellow perch; but a complete description of yellow perch diet composition across seasons has not been undertaken in recent years. We calculated mean relative weight (Wr), an index of condition, of age-1 and older yellow perch in Saginaw Bay annually for 1970-2011. We found high interannual variation in condition and documented low mean Wr during 1978-1991. We developed regression models to explain this variation using phosphorus load, temperature, forage fish density, and yellow perch density as potential explanatory factors. Patterns of Wr were associated with changes in yellow perch densities, although interannual variation was not significantly associated with any of the available explanatory variables. Diet analysis of yellow perch collected in 2009 and 2010 demonstrated that age-1 and older yellow perch consumed a fundamentally different diet from a previous study (1986-1988), exhibiting a greater reliance on non-indigenous prey (e.g. Bythotrephes longimanus). © 2014 Elsevier B.V.


Nuhfer A.J.,Hunt Creek Fisheries Research Station | Wills T.C.,Lake St Clair Fisheries Research Station | Zorn T.G.,Marquette Fisheries Research Station
North American Journal of Fisheries Management | Year: 2014

We evaluated the effects of steelhead Oncorhynchus mykiss (migratory Rainbow Trout) introduction on the population dynamics of resident Brown Trout Salmo trutta from 1995 to 2008 in a small, low-gradient trout stream. Data on Brown Trout population density, survival, and growth were collected from the treatment section in Hunt Creek, Michigan, where adult steelhead were stocked each spring during 1998-2003, as well as from two reference stream reaches. The presence of steelhead had no apparent effect on the density of age-0 Brown Trout, but the mean density of all age-1 and older (age-1+) Brown Trout year-classes that interacted with juvenile steelhead of the same age was 46% lower than the density of age-1+ year-classes that did not interact with juvenile steelhead of the same age. No differences in density of age-1+ Brown Trout were detected in reference sections between the periods of steelhead presence or absence in the treatment section. Lower annual survival rates for year-classes of age-0 Brown Trout that interacted with steelhead in the Hunt Creek treatment section were the primary reason that density of age-1+ Brown Trout fell to nearly half the levels that existed before steelhead were introduced or after most steelhead had emigrated from the stream. Although our case study showed that the introduction of steelhead into a small, low-gradient stream resulted in lower densities of resident Brown Trout, upstream passage of steelhead into streams with high-quality habitat also offers tremendous potential to increase wild production of juvenile steelhead, thereby reducing fisheries managers' reliance on hatchery-reared fish for stocking the Great Lakes.Received August 16, 2013; accepted January 2, 2014. © 2014 © American Fisheries Society 2014.

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