fertility

EFFECT OF A LOW-INTENSITY 30 MHz ELECTROMAGNETIC FIELD ON DAPHNIA MAGNA STRAUS (DAPHNIIDAE, CRUSTACEA) CRUSTACEANS OF VARIOUS AGES

Authors: Papoyan G. K., Filenko O. F., Yusupov V. I., Vorobyeva O. V., Zotov K. V., Bagratashvilli V. N.

The results of action of a low-intensity 30 MHz electromagnetic field (EMF) in continuous mode and when amplitude modulation with a 1000 s exposure on Daphnia magna Straus, 1820 crustaceans from a laboratory culture (newborn, 5 - 7 and 7 - 9 day aged) are presented. Observations were carried out of the irradiated parent generation and three subsequent ones (F1 - F3) with no exposure.

Fertility evaluation of ecologically different forms of house mice and their hybrids of the superspecies complex Mus musculus sensu lato (Rodentia: Muridae)

Authors: Maltsev A. N., Ambaryan A. V., Kotenkova E. V.

In house mice from the superspecies complex Mus musculus s.l., the relative weight of their testicles is higher and the sperm quality is better for the exoanthropic species than for the synantropic ones. It is shown that this pattern is observed at an intraspecific level as well, since the testicle weight index and sperm concentration were significantly higher in the hemi-synantropic subspecies Mus musculus wagneri and M. m. gansuensis as compared to the synantropic M. m. musculus in a few comparisons.