Zotov K. V. RussiaMoscowInstitute of Photon Technologies, Federal Scientific Research Center «Crystallography and Photonics», Russian Academy of Sciences, 2 Pionerskaya Str., Troitsk, Moscow 142190, Russiakirill.v.zotov@gmail.com Author's articles EFFECT OF A LOW-INTENSITY 30 MHz ELECTROMAGNETIC FIELD ON DAPHNIA MAGNA STRAUS (DAPHNIIDAE, CRUSTACEA) CRUSTACEANS OF VARIOUS AGES