Effect of Electric Power Network Frequency Magnetic Field on Embryonic Development of Ascaris suum (Nematoda)

Abstract

electric power network frequency magnetic field on embryonic development of Ascaris suum (Nematoda). Folia biol. (Kraków) 53: 101-105. Fertilised Ascaris suum eggs were subjected to an alternating electromagnetic field of frequency 50 Hz and density 2 mT for 60 days. The developing embryos in both control and experimental cultures were examined daily under a microscope. The experiment resulted in an accelerated rate of embryogenesis in the eggs incubated in the electromagnetic field, higher rates of malformed embryos as well as much higher mortality rate of L2 larvae.

Effects of extremely low‐frequency magnetic fields on the oviposition of Drosophila melanogaster over three generations

“…However, the development of larvae into pupae, and pupae into imago was not accelerated. Similar to our study, a higher speed of embryonic development of Ascaris suum under the influence of ELFMF (50 Hz, 2 mT) was observed by Kuzna-Grygiel et al [2005]; the acceleration of embryonic development in trout placed in an alternating magnetic field during the blastopore closing stage (50 Hz, 10 and 60 mT) was observed by Formicki and Perkowski [1998]; and a faster development of chick embryos under a pulsed magnetic field (10, 100, and 1000 Hz, 0.12-12 mT) was shown by Delgado et al [1982]. The increase in the number of eggs laid and the acceleration of the embryonic development can be explained by ELFMFinduced transcription and biosynthesis of proteins, as shown by Blank and Goodman [1997].…”

“…These effects depend on the type and intensity of the magnetic field and the species and ontogenesis of the selected animals [Cameron et al, 1993]. Experimental studies on invertebrates and vertebrates alike confirm a higher sensitivity to magnetic fields during the embryonic stage of development, especially extremely low-frequency magnetic fields (ELFMF) which may then lead to birth defects [Graham et al, 2000;Kuzna-Grygiel et al, 2005]. In this study, we examined the influence of an ELFMF on the oviposition and development of Drosophila melanogaster flies over three consecutive generations.…”

Life history traits of a temporary water ostracod Heterocypris incongruens (Crustacea, Ostracoda) are affected by power frequency (50 Hz) electromagnetic environmental pollution

“…Panagopoulos et al (2013) found that the number of pupae of Drosophila melanogaster Meigen decreases with the strength of the 50 Hz, 100-2100 μT magnetic fields applied for 5 days, although the effects were only statistically significant with high magnetic flux densities of 1.1 and 2.1 mT. Similarly, Ramírez et al (1983) report increased mortality of eggs, larvae, pupae and adults as well as reduced oviposition by D. melanogaster exposed to 60 Hz, 1000 μT magnetic field for 48 h. Finally, increased mortality has been also documented in strong magnetic field exposures: larvae of a large pig roundworm Ascaris suum (Goeze) (Kuźna-Grygiel et al 2005) and of a common liver fluke Fasciola hepatica L. (Kołodziejczyk et al 2010) both in 2-mT fields as well as larvae of a mill moth Ephestia kuehniella Zeller in 1.4-T field (Pandir et al 2013).…”

The Effect of an Eextremely Low Frequency Magnetic Field on Larvae Production in the Parasite-Host System: <I>Fasciola hepatica-Galba truncatula</I>: a Preliminary Study

“…The early stages of embryonic development of various species are responsive to magnetic fields (CAMERON et al 1993;KOMAZAKI & TAKANO 2007;GONET et al 2009). An accelerated rate of embryogenesis was observed in parasitic nematode (Ascaris suum) eggs incubated in an extremely low-frequency magnetic field (ELFMF) (KU NA-GRYGIEL et al 2005). In our previous studies, accelerated hatching of larvae (miracidia) under the influence of ELFMF was also found in the liver fluke (Fasciola hepatica) (KO£ODZIEJCZYK et al 2010).…”

“…The biological effects and mechanisms of the influence of magnetic fields on living organisms are not yet fully understood. It has been demonstrated that embryonated organisms are more susceptible to magnetic fields than mature organisms (KU NA-GRYGIEL et al 2005). The early stages of embryonic development of various species are responsive to magnetic fields (CAMERON et al 1993;KOMAZAKI & TAKANO 2007;GONET et al 2009).…”