Using boat electrofishing to estimate the abundance of invasive common carp in small Midwestern Lakes.

摘要: Abstract The common carp Cyprinus carpio is among the most invasive fish worldwide, but practical methods for estimating its abundance have not yet been developed. Particularly needed are that can accurately assess low densities of to enact proactive management strategies before populations reach damaging levels. In this study we tested whether density adult in small Minnesota lakes could be predicted from their catch rates using boat electrofishing. We used mark and recapture estimate eight Midwestern with a wide range (13–400 carp/ha), while also surveying each lake addition, reduced by up 90% two test was accompanied similar drop electrofishing rates. A regression analysis showed increased linearly increasing carp. cross-validation pro...