INFLUENCE OF MAGNETIC FIELDS OF VARYING INTENSITY ON THE MORPHOLOGICAL VARIABILITY OF LONG-LEGGED WOOD FROG LARVAE (RANA MACROCNEMIS) AFTER THE EXPOSURE PERIOD FROM NEURULA TO HATCHING

Abstract

Aim. The aim is to study morphological diversity of long-legged wood frog larvae after continuous exposure to a magnetic field of varying intensity during embryonic development from neurula to leaving the egg membranes. Methods. We have created hypermagnetic conditions by increasing the tension of the natural magnetic field. Petri dish with fragments of laid eggs has been placed in a low carbon steel container (20,5x17x9). Outside, the container has been covered with a shell made of sheet copper. Results. Rana macrocnemis, obtained in the first experiment, compared with the control specie, showed a significant increase in tail and body length. The second experiment showed an increase in tail and body length. The third experiment, compared to the control specie, showed no difference. The fourth experiment showed an increase in tail and body length. The fifth experiment also showed an increase in tail and body length. Conclusions. The effect of magnetic fields on the embryonic development period from neurula to hatching showed that the length of the trunk is a more stable feature, the tail length increases in the experiments, and only in the third experiment it remained unchanged compared to control species.