Oviposition response of Chironomus tepperi to nitrogenous compounds and bioextracts in two-choice laboratory tests.

Two-choice laboratory tests were used to investigate the oviposition response of Chironomus tepperi to a range of nitrogenous compounds and crude bioextracts. Responses to nitrogenous compounds varied in response to concentration. Ammonium nitrate did not influence oviposition at concentrations from 2 to 12 mg/liter.