A dangerous, alien animal has appeared in Hungarian waters

Hydrobiologist András Weiperth gave a detailed account of the problems caused by the red swamp crayfish. This alien animal is like an ecological atomic bomb. It literally devours native animals and plants in the water, even goes ashore to hunt frogs, and spreads deadly pathogens and parasites to many species - said the expert. The crayfish poses a threat not only to wildlife, but also to infrastructure. In Érd, for example, the filling of railway culverts was delayed due to the crayfish's activity. In addition, the red swamp crayfish returns pollutants trapped in the riverbed, including heavy metals, to the river waters. The spread of alien species is a global problem, and Hungary is no exception. In addition to the red swamp crayfish, several other invasive species have also appeared in our country, which pose a serious challenge in terms of maintaining the ecological system. The appearance of the red swamp crayfish in Hungary is primarily due to human irresponsibility. András ...