Emergence collection trap
The Emergenzsammelfalle or Emergenz- eclector is one of entomologists used case to determine which has the aim, as many insects of which species within a defined area of an examination area from the ground or water within a certain period of time emerge and rise in the air (= emerge ).
Construction
The emergence traps used today typically consist of a one square meter rectangular frame that is planked or covered with plastic on the sides . Above it is a pyramid-shaped frame that is covered with a transparent fabric. At the top of this pyramid is the actual safety device, a so-called head box, which is filled with 60 percent ethylene glycol . In the water, the traps are provided with floating bodies.
functionality
If insects hatch after pupation , such as meadow snakes from the floor of a meadow or mosquitoes from the surface of a body of water, they naturally strive away from the ground or up towards the light. Therefore they take the path in the pyramid to the head box, where they get caught in the glycol while flying around and are killed and preserved by it. The catches are taken at least once a week and determined and counted by species in the laboratory .
See also
source
- Norbert Becker, Paul Glaser, Hermann Magin: Biological mosquito control on the Upper Rhine , (commemorative publication) 20 years of communal action group to combat the snake plague, 1996, ISBN 3-00-000584-6 , page 104