WAR of the MICROWORLDS
How do I kill Thee? Let me count the Ways! (# 22) click here for full list
Dactylellina candida (formerly in Dactylaria) Capture devices by this species are both non-constricting rings and adhesive knobs. Both types of device are detachable from the parent hyphae. The rings are detached from their slender stalks by the physical struggles of the nematode and and are carried off by the victim to act as dispersal agents before. The cells of the detached ring germinate, penetrate the cuticle, and kill the prey.
(left) non-constricting ring of Dactylellina candida (right) nematode captured and consumed
Nematode prey with rings wedged around their bodies.
Nematodes are sightless but, as has been demonstrated by Webster's group in England, they are attracted by some chemical lure released by the trapping devices of the predatory fungi. The nematode on the right has entered the ring with sufficient force to cause constriction of its body. This species is very versatile in that it has both NCRs and adhesive knobs for capture. As well both types of trapping device are deciduous (break away from the parent hyphae by nematode struggles) and can act as dispersal agents until the victim eventually succumbs to the attack.
Nematode captured and held by five adhesive knobs of Dactylellina candida