Developing food attractants for silver carp that can be used to induce aggregation and control them: a new biochemical tool
Project manager: Peter Sorensen
Funded by: Environment and Natural Resources Trust Fund as recommended by the Legislative-Citizen Commission on Minnesota Resources
Phase I Description: This project will identify and develop chemical food attractants for Asian carp that could be used with the poison nanoparticles currently being developed by the USGS laboratory. Understanding how to optimize food and sex pheromones function in the lab will allow researchers to develop ways to apply sensory cues to attract carp and stimulate aggregation.
In addition to knowing where these mobile and invasive fish are, we would ideally also be able to stimulate them to aggregate in specific locations using attractants. Common carp and Asian carp are social animals that tend to aggregate, so this approach has great promise. Furthermore, initial work with radio-tagged common carp has already demonstrated that these fish will quickly locate aggregating groups of conspecifics in the winter when the entire group can be located and removed by seining (Judas fish technique). We will also develop food and /or sex pheromone attractants (that could even be released by Judas fish) to stimulate aggregations outside of the winter months in ways we can also control.
Project start date: 2012
Project end date: 2016; Phase 2 -- Attracting carp so their presence can be accurately assessed -- to continue through 2018
Progress and updates:
- Chemical Cues which Include Amino Acids Mediate Species-Specific Feeding Behavior in Invasive Filter-Feeding Bigheaded Carps (Published paper)
- New peer-reviewed paper provides insights into Asian carp feeding success and offers opportunities for control (MAISRC newsletter)
- Anatomical and physiological studies of bigheaded carps demonstrate that the epibranchial organ functions as a pharyngeal taste organ (Published paper)