Invasive Carp
Invasive Carp
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Relationship between fish presence and abundance in Arizona standing waters measured through standard techniques and environmental DNA
The unpredictability of DNA degradation in the environment has plagued the ability of scientists to interpret environmental DNA (eDNA) data since the technique has been used for early detection of aquatic invasive species (AIS) such as silver and bighead carps (Hypophthalmichthys molitrix and Hypophthalmichthys nobilis) throughout the Chicago Area Waterway System (CAWS), Des Plaines River, near...
Application of broadband sound for bigheaded carp deterrence
Bigheaded carp, especially silver ( Hypophthalmichthys molitrix ) and bighead carp ( Hypophthalmichthys nobilis ), are invasive fish species that have established breeding populations dominating large regions of the Mississippi Drainage in the 20 years following escape from aquaculture facilities in Arkansas.
Use of antimycin-microparticles and alfalfa to control Grass Carp Ctenopharyngodon idella
Since their introduction in the 1960’s, grass carp ( Ctenopharyngodon idella ) have spread across the North American continent as far north as the U.S./Canadian border in the Great Lakes. Grass carp are an herbivorous species and can significantly reduce the amount of macrophytes and other plant material in a body of water. Subsequently, this can lead to many detrimental effects for certain...
Flow Cytometry Applied to the Animal Kingdom in Studies of Natural Resource Science
Flow cytometry is a technique for rapidly analyzing large numbers of animal cells using light-scattering, fluorescence, and absorbance measurements.
Determining the Ploidy and Resultant Reproductive Capability of Artificially Spawned and Wild Caught Asian Carp
The invasive grass carp and black carp are artificially spawned to produce triploids, which means they have three sets of chromosomes and are sterile. WARC scientists invented an early ploidy prediction process for produced fry, and a post-mortem assessment method for carp caught either in the wild or sold and hauled live to other states.
Developing Detection Probabilities and Quantifying the Effects of Flowing Water to Improve Asian Carp Environmental DNA (eDNA) Surveys
Invasive Asian carp are problematic for native species, and managers are implementing control measures without well-quantified detection limits or a means to assess the accuracy and precision of existing or future survey data for the fish. Environmental DNA - eDNA - is already used to detect the presence of invasive species, and can be used to identify locations to focus carp control efforts.
Genetic Analysis of Wild and Captive Black Carp in the Mississippi River Basin
Black carp have likely been present in the Mississippi River since the 1990s, but their current distribution and spread is not well understood. Genetics is helping to shed light on this species, including its diversity, the relatedness of wild and captive fish, and its introduction history.