Delayed consequences of the influence of hypomagnetic field on roach (

Abstract

The absence of magnetic fields can affect fish embryogenesis. The influence of hypomagnetic field on the survival of roach (Rutilus rutilus) embryos was estimated. Delayed consequences of R. rutilus embryos and prelarvae exposure to these magnetic conditions were also studied. Hypomagnetic field during embryogenesis led to an increased mortality of embryos. The juveniles developed from the exposed embryos were characterised by reduced vertebral phenotypic diversity. The influence of hypomagnetic field on roach prelarvae led to changes in the size–mass indices of juvenile fish. Present results differ from those that were previously obtained in experiments with simulated geomagnetic storms and artificial low-frequency magnetic fields and emphasise the importance of the magnetic environment for the fish embryogenesis. Possible mechanisms of the described effects are discussed.

Influence of hypomagnetic field on the heartbeat in zebrafish embryos

“…Similar effects of HMF on the early development of other species are represented in the available literature. Increased mortality in embryos of cyprinid fish roach (Rutilus rutilus) due to exposure to HMF was described (Krylov et al, 2021). The same effect has been revealed in mice (Fesenko et al, 2010) and rats (Korolyov et al, 2009) maintained under GMF shielding during pregnancy.…”