Accession Number:

ADA019958

Title:

Circadian Rhythms in Plants, Insects and Mammals Exposed to ELF Magnetic and/or Electric Fields and Currents

Descriptive Note:

Final rept.

Corporate Author:

MINNESOTA UNIV MINNEAPOLIS CHRONOBIOLOGY LABS

Report Date:

1975-08-28

Pagination or Media Count:

68.0

Abstract:

Proceeding on the basis of knowledge that circadian rhythms are a predictable source of biological variability with characteristics that can change in response to potentially harmful agents, studies were performed on plants, insects and mammals in the presence and absence of ELF fields and currents. Specifically, circadian rhythms were examined in leaf movements of Albizzia julibrissin silk tree, in susceptibility of Tribolium confusum flour beetle to an insecticide, in body temperature and drug resistance of Mus musculus mouse. In the latter animal body weight, food consumption, the estrus cycle and survival were also investigated. Field conditions ranged from 45 to 75 Hz, 0.4 to 2 gauss and 1 to 180 vm. Duration of field exposure varied from a few days to several months. Such exposure was consistent with the demonstration of statistically significant circadian rhythms.

Subject Categories:

  • Animal Husbandry and Veterinary Medicine
  • Anatomy and Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE