Myocastor coypus
Myocastor coypus

Impact ID3393
Impact TypePredation/Herbivory
Study TypeExperimental
Study LocationField
Impact DescriptionSagittaria latifolia, Polygonum hydropiperoide and Polygonum hydropiper had the highest forage ratios and were the least available plants in the study sites with Nutria (Myocastor coypus). Heavy grazing by Myocastor coypus significantly reduced the total abundance of vegetation and the effects of feeding were greatest when the largest populations Myocastor coypus were present. Myocastor coypus grazing is responsible for the disappearance of Sagittaria latifolia from the refuge
Great Lakes RegionNo

Return to impacts listing for Myocastor coypus


The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2022]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [12/2/2022].

Contact us if you are using data from this site for a publication to make sure the data are being used appropriately and for potential co-authorship if warranted.

For general information and questions about the database, contact Wesley Daniel. For problems and technical issues, contact Matthew Neilson.