Researchers have identified a newly discovered parasitic fungus in Ireland that infects and kills cave spiders in a manner likened to a “zombie” takeover.
The species, named Gibellula attenboroughii in honor of Sir David Attenborough, was first observed in 2021 on orb-weaving cave spiders (Metellina merianae) inside an abandoned gunpowder store at Castle Espie in Northern Ireland. Additional sightings have since been recorded in both Northern Ireland and the Republic of Ireland, also affecting the species Meta menardi.
Once the fungus infects a spider, it infiltrates the host’s body, eventually influencing its behavior. Infected spiders abandon their webs and move to exposed surfaces—locations that provide optimal conditions for the fungus to release spores. The host dies in place as the fungus consumes it from within, later emerging from the body in a white, fuzzy growth.
Scientists note that this phenomenon mirrors the well-known “zombie-ant” effect caused by certain Ophiocordyceps fungi. While the exact mechanisms remain under study, researchers suspect the parasite may alter the spider’s brain chemistry to manipulate its movements.
The discovery underscores the hidden diversity of parasitic fungi in the British Isles and has prompted calls for further research into their ecological roles and potential applications. – source