Patrick Kroboth
Patrick is a Research Fish Biologist at the Columbia Environmental Research Center.
Patrick has been a fish biologist with the U.S. Geological Survey Columbia Environmental Research Center since 2017 with research emphasis on invasive fish species, specifically Black Carp, Bighead Carp, Grass Carp, and Silver Carp. This research includes development of methods to improve capture, early detection, and control, and study of habitat use and movement. His prior experience ranges across lotic and lentic aquatic ecosystems studying recreational and commercial fisheries, invasive species, and threatened and endangered species.
Education and Certifications
M.S. in Fisheries, Wildlife, and Aquaculture, Mississippi State University, 2014
B.S. in Fisheries Sciences, Virginia Polytechnic and State University, 2010
Affiliations and Memberships*
2022: Mississippi River Basin Panel on Aquatic Invasive Species
2007-present: American Fisheries Society
Science and Products
Black Carp Photo Gallery
Black Carp Photo Gallery
Invasive Carps Photo Gallery
Invasive Carps Photo Gallery
Filter Total Items: 22
Data and rloadest models used to estimate sediment and nutrient loads in selected New York tributaries to eastern Lake Erie Data and rloadest models used to estimate sediment and nutrient loads in selected New York tributaries to eastern Lake Erie
This data release contains data and rloadest models used to estimate sediment and nutrient loads in selected New York tributaries to eastern Lake Erie. Load estimates for suspended sediment and nutrients were calculated using rloadest (Lorenz and others, 2013; Runkel and De Cicco, 2017) models. Included are a zip file with input and output files for selected rloadest models for 13 U.S...
Black carp (Mylopharyngodon piceus) mouth gape and size preference of a bivalve prey Black carp (Mylopharyngodon piceus) mouth gape and size preference of a bivalve prey
These data represent the measurements of length and mouth gape from large juvenile and adult wild-caught and small juvenile hatchery origin black carp, and the results of laboratory size preference trials with bivalve prey, specifically Corbicula clams. Wild-caught black carp ranged from 429-1580 mm total length, a larger range than measured in previous studies. Corbicula feeding trial...
Age estimates of captured Black Carp (Mylopharyngodon piceus) using four calcified structures, 2017-2019 Age estimates of captured Black Carp (Mylopharyngodon piceus) using four calcified structures, 2017-2019
A total of 236 Black Carp were collected throughout the year from 2017-2019 by incidental captures of commercial fishers and biologists. Capture date, river basin of capture location, and coordinates were recorded for each Black Carp captured. A subsample of 119 Black Carp varying from 429-1268 millimeters total length were compared for the precision of annuli counts by two experienced...
Size, attachment material and efficacy of piscicide delivery vials and baits for control of black carp, Mylopharyngodon piceus Size, attachment material and efficacy of piscicide delivery vials and baits for control of black carp, Mylopharyngodon piceus
A piscicide delivery method was designed to selectively target black carp Mylopharyngodon piceus, an invasive species in North America which possesses specially adapted pharyngeal teeth for crushing mollusk prey. Bait was prepared by attaching a glass vial containing toxicant (antimycin A) to the exterior of Corbicula fluminea clam valve. The vial was designed to break by the force...
Capture method, habitat, length, and diet items consumed by wild-caught black carp (Mylopharyngodon piceus) in the Mississippi River Basin, 2017-2019 Capture method, habitat, length, and diet items consumed by wild-caught black carp (Mylopharyngodon piceus) in the Mississippi River Basin, 2017-2019
An inventory (enumeration and taxonomic identification) of diet items consumed by wild-caught black carp, based on the examination of gut contents from fish that were collected in the lower Mississippi River drainage of the U.S.
Survival of grass carp and black carp gavaged with an oral dose of antimycin A in two carriers, corn oil and ethanol Survival of grass carp and black carp gavaged with an oral dose of antimycin A in two carriers, corn oil and ethanol
The data consists of survival, length and weight of grass carp and black carp gavaged with an oral dose of antimycin A in two carriers, corn oil and ethanol.
Microchemistry demographics and development data from wild caught black carp in the Mississippi River basin, 2011-18 Microchemistry demographics and development data from wild caught black carp in the Mississippi River basin, 2011-18
Data consists of ploidy, otolith stable isotope analysis and microchemistry, age, weight, sex, length and geolocation data from wild caught black carp (Mylopharyngodon piceus) captured in the Mississippi River basin from 2011 through 2018.
Pallid sturgeon seasonal habitat selection in a large free-flowing river, the lower Mississippi River, 2009-2015-Data Pallid sturgeon seasonal habitat selection in a large free-flowing river, the lower Mississippi River, 2009-2015-Data
The data was collected at two lower Mississippi River sites and consists of year round pallid sturgeon Scaphirhynchus albus capture attributes (including habitat type at capture location) from 116 telemetry-tagged fish and habitat area estimation for the sites.
Diet items consumed by wild-caught black carp (Mylopharyngodon piceus) in the U.S. Diet items consumed by wild-caught black carp (Mylopharyngodon piceus) in the U.S.
An inventory (enumeration and taxonomic identification) of diet items consumed by wild-caught black carp, based on the examination of gut contents from fish that were collected in the lower Mississippi River drainage of the U.S.
Black carp and grass carp morphometric measurements Black carp and grass carp morphometric measurements
Black carp Mylopharyngodon piceus and grass carp Ctenopharyngodon idella are morphologically similar species imported from eastern Asia to North America as biological control organisms. Preferred identification methods are coloration and pharyngeal tooth form. Grass carp possess serrated teeth and black carp molariform teeth. Examination of pharyngeal teeth causes extensive damage to a...
Science and Products
Black Carp Photo Gallery
Black Carp Photo Gallery
Invasive Carps Photo Gallery
Invasive Carps Photo Gallery
Filter Total Items: 22
Data and rloadest models used to estimate sediment and nutrient loads in selected New York tributaries to eastern Lake Erie Data and rloadest models used to estimate sediment and nutrient loads in selected New York tributaries to eastern Lake Erie
This data release contains data and rloadest models used to estimate sediment and nutrient loads in selected New York tributaries to eastern Lake Erie. Load estimates for suspended sediment and nutrients were calculated using rloadest (Lorenz and others, 2013; Runkel and De Cicco, 2017) models. Included are a zip file with input and output files for selected rloadest models for 13 U.S...
Black carp (Mylopharyngodon piceus) mouth gape and size preference of a bivalve prey Black carp (Mylopharyngodon piceus) mouth gape and size preference of a bivalve prey
These data represent the measurements of length and mouth gape from large juvenile and adult wild-caught and small juvenile hatchery origin black carp, and the results of laboratory size preference trials with bivalve prey, specifically Corbicula clams. Wild-caught black carp ranged from 429-1580 mm total length, a larger range than measured in previous studies. Corbicula feeding trial...
Age estimates of captured Black Carp (Mylopharyngodon piceus) using four calcified structures, 2017-2019 Age estimates of captured Black Carp (Mylopharyngodon piceus) using four calcified structures, 2017-2019
A total of 236 Black Carp were collected throughout the year from 2017-2019 by incidental captures of commercial fishers and biologists. Capture date, river basin of capture location, and coordinates were recorded for each Black Carp captured. A subsample of 119 Black Carp varying from 429-1268 millimeters total length were compared for the precision of annuli counts by two experienced...
Size, attachment material and efficacy of piscicide delivery vials and baits for control of black carp, Mylopharyngodon piceus Size, attachment material and efficacy of piscicide delivery vials and baits for control of black carp, Mylopharyngodon piceus
A piscicide delivery method was designed to selectively target black carp Mylopharyngodon piceus, an invasive species in North America which possesses specially adapted pharyngeal teeth for crushing mollusk prey. Bait was prepared by attaching a glass vial containing toxicant (antimycin A) to the exterior of Corbicula fluminea clam valve. The vial was designed to break by the force...
Capture method, habitat, length, and diet items consumed by wild-caught black carp (Mylopharyngodon piceus) in the Mississippi River Basin, 2017-2019 Capture method, habitat, length, and diet items consumed by wild-caught black carp (Mylopharyngodon piceus) in the Mississippi River Basin, 2017-2019
An inventory (enumeration and taxonomic identification) of diet items consumed by wild-caught black carp, based on the examination of gut contents from fish that were collected in the lower Mississippi River drainage of the U.S.
Survival of grass carp and black carp gavaged with an oral dose of antimycin A in two carriers, corn oil and ethanol Survival of grass carp and black carp gavaged with an oral dose of antimycin A in two carriers, corn oil and ethanol
The data consists of survival, length and weight of grass carp and black carp gavaged with an oral dose of antimycin A in two carriers, corn oil and ethanol.
Microchemistry demographics and development data from wild caught black carp in the Mississippi River basin, 2011-18 Microchemistry demographics and development data from wild caught black carp in the Mississippi River basin, 2011-18
Data consists of ploidy, otolith stable isotope analysis and microchemistry, age, weight, sex, length and geolocation data from wild caught black carp (Mylopharyngodon piceus) captured in the Mississippi River basin from 2011 through 2018.
Pallid sturgeon seasonal habitat selection in a large free-flowing river, the lower Mississippi River, 2009-2015-Data Pallid sturgeon seasonal habitat selection in a large free-flowing river, the lower Mississippi River, 2009-2015-Data
The data was collected at two lower Mississippi River sites and consists of year round pallid sturgeon Scaphirhynchus albus capture attributes (including habitat type at capture location) from 116 telemetry-tagged fish and habitat area estimation for the sites.
Diet items consumed by wild-caught black carp (Mylopharyngodon piceus) in the U.S. Diet items consumed by wild-caught black carp (Mylopharyngodon piceus) in the U.S.
An inventory (enumeration and taxonomic identification) of diet items consumed by wild-caught black carp, based on the examination of gut contents from fish that were collected in the lower Mississippi River drainage of the U.S.
Black carp and grass carp morphometric measurements Black carp and grass carp morphometric measurements
Black carp Mylopharyngodon piceus and grass carp Ctenopharyngodon idella are morphologically similar species imported from eastern Asia to North America as biological control organisms. Preferred identification methods are coloration and pharyngeal tooth form. Grass carp possess serrated teeth and black carp molariform teeth. Examination of pharyngeal teeth causes extensive damage to a...
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government