Loading...
  • streams
  • Therefore, the GLFC must prioritize streams according to estimated lamprey abundance, known treatment costs, and available budget. (usgs.gov)
  • These surveys are combined with expert judgement of streams gained by managers through years of sea lamprey control. (usgs.gov)
  • The idea behind the assessments is not to obtain actual population densities, but rather to prioritize streams for treatment in order to achieve the maximum return on investment of sea lamprey killed per dollar spent. (usgs.gov)
  • 2016). These assays have been optimized and validated to show they can detect the presence of eDNA from spawning and larval sea lamprey in streams. (usgs.gov)
  • notably
  • The central nervous system of the pouched lamprey develops notably during metamorphosis to the large-eyed macropthalmia stage, with particularly large increases in the volume of visual areas of the brain. (wikipedia.org)
  • nest
  • The female lamprey lays between 30,000 to 100,000 eggs into a nest while the male simultaneously fertilizes the eggs. (usgs.gov)
  • control
  • A significant method of control is the use of chemicals to target the larval phase of the lamprey life cycle (Smith and Tibbles 1980). (usgs.gov)
  • Found
  • In addition, they have also found positive correlations with larval densities in a laboratory study. (usgs.gov)