title: Some preliminary studies of the effects of a static magnetic field on the life cycle of the Lebistes reticulatus (guppy).
abstract: Lebistes reticulatus (guppy) was subjected to a continuous treatment of a 500-G homogeneous magnetic field within a specially designed horseshoe magnet encompassing a small aquarium. The experiment was carried through several generations with the following results: in the first generation, the brood size was normal but the gestation period was reduced by 30%; the second generation had an average reduction of spawn rate of 50% and a reduction of the gestation period of 30%; and in the third generation, reproduction was completely inhibited as long as the fish remained within the magnetic field.
mesh_terms: D000375:Aging; D000818:Animals; D005260:Female; D005399:Fishes / Q000254:growth & development*; D008280:Magnetics; D008297:Male; D012098:Reproduction
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