Joseph D Schmitt, PhD

Science and Products

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  July 29, 2022

  Subindicator: Native Prey Fish Diversity

  No abstract available.

  Authors

  Brian C. Weidel, Mark Vinson, Darryl W. Hondorp, Ralph W. Tingley, Joseph Schmitt

  By

  Ecosystems Mission Area, Great Lakes Science Center

  July 4, 2022

  Genome-wide genetic diversity may help identify fine-scale genetic structure among lake whitefish spawning groups in Lake Erie

  In Lake Erie, lake whitefish Coregonus clupeaformis supported lucrative fisheries before populations were decimated by overfishing and water quality degradation. In recent years, there has been a renewed interest in lake whitefish and management of the fishery they support. Lake whitefish spawn on several reefs throughout Lake Erie, but the relative recruitment dynamics and contributions of spawni

  Authors

  Peter T. Euclide, Joseph Schmitt, Richard Kraus, Andy Cook, Jim Markham

  By

  Ecosystems Mission Area, Great Lakes Science Center, Pennsylvania Water Science Center

  June 1, 2021

  Fisheries research and monitoring activities of the Lake Erie Biological Station, 2020

  This report presents biomass-based summaries of fish communities in the West Basin of Lake Erie derived from USGS bottom trawl surveys conducted from 2013 to 2020 during June and September. The survey design provided temporal and spatial coverage that did not exist in the interagency trawl database, and thus complemented the August ODNR-OMNRF effort to reinforce stock assessments with more robust

  Authors

  Kevin R. Keretz, Patrick Kočovský, Richard Kraus, James Roberts, Joseph Schmitt

  By

  Ecosystems Mission Area, Great Lakes Science Center

  May 24, 2021

  Improved methods for understanding the role of predation on dreissenid population dynamics

  Impacts of dreissenid mussels (Dreissena spp.) on Great Lakes ecosystems are well documented, and a better understanding of mechanisms that cause variation in dreissenid abundance is needed. An outstanding question is how much dreissenid biomass is consumed by fish predation. A significant difficulty for investigating dreissenid consumption by fish is that dreissenids in stomachs are often a mix o

  Authors

  Kevin R. Keretz, Richard Kraus, Joseph Schmitt

  By

  Ecosystems Mission Area, Great Lakes Science Center

  April 28, 2021

  Estimates of food consumption rates for invasive Blue Catfish

  As a prolific invasive species, Blue Catfish Ictalurus furcatus threaten native organisms in numerous estuarine and tidal freshwaters along the Atlantic coast of the United States. However, no published estimates of consumption rates are available for Blue Catfish in the scientific literature. This information is critical for development of bioenergetics models or estimation of population‐level im

  Authors

  Joseph Schmitt, Corbin D. Hilling, Donald J. Orth

  By

  Ecosystems Mission Area, Great Lakes Science Center

  January 12, 2021

  Comparison of specimen- and image-based morphometrics in Cisco

  Morphometric data from fish are typically generated using one of two methods: direct measurements made on a specimen or extraction of distances from a digital picture. We compared data on 12 morphometrics collected with these two methods on the same collection of Cisco Coregonus artedi from Lake Ontario, North America, to assess the degree of bias in measurements made directly on a specimen- vs. a

  Authors

  Brian O'Malley, Joseph Schmitt, Jeremy P. Holden, Brian C. Weidel

  By

  Ecosystems Mission Area, Great Lakes Science Center

  December 10, 2020

  Resource partitioning across a trophic gradient between a freshwater fish and an intraguild exotic

  The introduction of exotic species has the potential to cause resource competition with native species and may lead to competitive exclusion when resources are limiting. On the other hand, information is lacking to predict under what alternate trophic conditions coexistence may occur. Comparing diets of native yellow perch Perca flavescens and nonindigenous white perch Morone americana, we examine

  Authors

  Richard Kraus, Joseph Schmitt, Kevin R. Keretz

  By

  Ecosystems Mission Area, Great Lakes Science Center

  April 30, 2020

  Fisheries research and monitoring activities of the Lake Erie Biological Station, 2019

  A comprehensive understanding of fish populations and their interactions is the cornerstone of modern fishery management and the basis for Fish Community Goals and Objectives for Lake Erie (Ryan et al. 2003). This report is responsive to U.S. Geological Survey (USGS) obligations via Memorandum of Understanding (MOU) with the Great Lakes Council of Lake Committees (CLC) to provide scientific inform

  Authors

  Kevin R. Keretz, Patrick Kočovský, Richard Kraus, Joseph Schmitt

  By

  Ecosystems Mission Area, Great Lakes Science Center

  February 15, 2020

  Does Lake Erie still have sufficient oxythermal habitat for cisco Coregonus artedi?

  In Lake Erie, cisco Coregonus artedi once supported one of the most valuable freshwater fisheries on earth, yet overfishing caused their eventual extirpation from the lake. With warming lake temperatures, some have questioned whether Lake Erie still contains suitable oxythermal conditions for cisco. Using published oxythermal thresholds for cisco and oxythermal profiles from Lake Erie, we sought

  Authors

  Joseph Schmitt, Christoper S. Vandergoot, Brian P. O'Malley, Richard Kraus

  By

  Ecosystems Mission Area, Great Lakes Science Center, Pennsylvania Water Science Center

  July 26, 2019

  Growth and mortality of invasive Flathead Catfish in the tidal James River, Virginia

  Invasive species are a major threat to biodiversity of native fishes in North America. In Atlantic coastal rivers of the United States, large catfishes introduced from the Gulf of Mexico drainages have become established and contributed to native species declines. Flathead Catfish Pylodictis olivaris were introduced to the Chesapeake Bay drainage in the 1960s and 1970s in the James and Potomac riv

  Authors

  Corbin D. Hilling, Aaron J. Bunch, Jason A. Emmel, Joseph Schmitt, Donald J. Orth

  By

  Ecosystems Mission Area, Great Lakes Science Center

  Non-USGS Publications**

  Evans, H.K., Bunch, A.J., Schmitt, J.D., Hoogakker, F.J., and K.B. Carlson. 2021. High‐throughput sequencing outperforms traditional morphological methods in Blue Catfish diet analysis and reveals novel insights into diet ecology. Ecology and Evolution. https://doi.org/10.1002/ece3.7460.

  Orth, D.J., Schmitt, J.D. and Hilling, C.D. 2020. Hyperbole, Simile, Metaphor, and Invasivore: Messaging About non‐native Blue Catfish Expansion. Fisheries 45: 638-646. https://doi.org/10.1002/fsh.10502

  Hilling, C. D., Y. Jiao, A. J. Bunch, R. S. Greenlee, J. D. Schmitt, and D. J. Orth. 2020. Growth dynamics of invasive Blue Catfish in four subestuaries of the Chesapeake Bay, USA. North American Journal of Fisheries Management.

  Schmitt, J.D., Emmel, J.A., Bunch, A.J., Hilling, C.D., and D.J. Orth. 2019. Feeding ecology and distribution of an invasive apex predator: Flathead Catfish Pylodictis olivaris in subestuaries of the Chesapeake Bay, Virginia, USA. North American Journal of Fisheries Management 39:390-403.

  Schmitt, J.D., B.K. Peoples, A. J. Bunch, L. Castello, and D. J. Orth. 2019. Modeling the predation dynamics of invasive Blue Catfish (Ictalurus furcatus) in the Chesapeake Bay. Fishery Bulletin 117(4): 277-290.
  

  Schmitt, J.D., B. K. Peoples, L. Castello, and D.J. Orth. 2019. Feeding ecology of generalist consumers: a case study of invasive Blue Catfish Ictalurus furcatus in the Chesapeake Bay. Environmental Biology of Fishes 102(3): 443-465.

  Schmitt, J. D., E.M. Hallerman, A. Bunch, Z. Moran, J. A. Emmel, and D. J. Orth. 2017. Predation and prey selectivity by nonnative catfish on migrating alosines in an Atlantic slope estuary. Marine and Coastal Fisheries 9:108-125.

  Schmitt, J.D., Gedamke, T., DuPaul, W. D., and J. A. Musick. 2015. Ontogenetic and sex-specific shifts in the feeding habits of the barndoor skate <i>Dipturus laevis</i> on Georges Bank. Marine and Coastal Fisheries Dynamics, Management, and Ecosystem Science 7(1): 409-418.

  Schmitt, J.D. and D.J. Orth. 2015. First record of pughead deformity in Blue Catfish. Transactions of the American Fisheries Society 144(6):1111-1116.

  Moran, Z., Orth, D. J., Schmitt, J. D., Hallerman, E.M., and R. Aquilar. 2015. Effectiveness of DNA barcoding for identifying piscine prey items in stomach contents of piscivorous catfish. Environmental Biology of Fishes 98:1-7.

  Schmitt, J.D., and Shoup, D.E. 2013. Delayed hooking mortality of Blue Catfish Ictalurus furcatus caught on juglines. North American Journal of Fisheries Management 33(2): 245-254.

  **Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.

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  December 31, 2020

  Evaluating How Changing Climate and Water Clarity Can Affect Restoration of Native Coregonine Fish in Midwestern Lakes

  Coregonines are a sub-family of freshwater fishes within the well-known Salmonidae family. In the upper midwestern U.S., these fishes have provided a key food source to Native Americans for millennia and immigrants for the last several centuries. Since the mid-20th century, however, their diversity and abundance has declined owing to several anthropogenic stressors including overfishing, declining

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  Climate Adaptation Science Centers

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  December 31, 2020

  Evaluating How Changing Climate and Water Clarity Can Affect Restoration of Native Coregonine Fish in Midwestern Lakes

  Coregonines are a sub-family of freshwater fishes within the well-known Salmonidae family. In the upper midwestern U.S., these fishes have provided a key food source to Native Americans for millennia and immigrants for the last several centuries. Since the mid-20th century, however, their diversity and abundance has declined owing to several anthropogenic stressors including overfishing, declining

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• Data

  Data releases by this scientist

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  April 1, 2022

  Lake Erie Fish Community Data, 2013-2021

  Assessing the distribution and abundance of both predator and prey (forage) fish species is a cornerstone of ecosystem-based fishery management, and supports decision making that considers food-web interactions. In support of binational Great Lakes fishery management the objectives of this survey were to: provide estimates of densities of key forage and predator species in the western basin of Lak

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  Great Lakes Science Center

  March 24, 2021

  Morphometric measurements of Cisco (Coregonus artedi) from Lake Ontario 2018

  These data contain morphometric measurements collected on the left side of Cisco (Coregonus artedi) collected from Lake Ontario in 2018. Measurements were obtained by two methods, first by direct measurements made on the thawed specimens using a hand caliper by one person, then using a digital image technique. The digital image measurements were completed by two different measurers to evaluate how

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  Great Lakes Science Center

  November 12, 2019

  Diet Data from the Western Basin of Lake Erie Examining White and Yellow Perch, 2012-2016

  A fish's diet is the integrated response of multiple ecological interactions including habitat use, foraging behavior, prey community characteristics, and inter-specific interactions. Fish diet samples have quantified how the invasion of white perch into Lake Erie in the early 1950s has influenced interactions with native yellow perch, which are similar in morphology and habitat use. Early researc

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  Great Lakes Science Center
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  October 13, 2023

  GLSC Contributes to American Fisheries Society Annual Meeting

  Annual American Fishery Society meeting presentations

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