Biology 3218F/G Lecture Notes - Lecture 8: Rotifer, Conidiobolus, Basidiobolus Ranarum
20 Sep 2016
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Entomo means insects; ophthora means murderer; thus insect murderers. A different genus, ballocephala, attacks tardigrades (common name: water bears) Conidiobolus and basidiobolus live on dung and might cause systemic disease in humans. Left pic: hind end completely filled with entomophthora and is exuding fungal reproductive bits (sporangiophores and sporangia) Each sporangia flies off like an individual spore (conidium); has to stick to somewhere where the fly will encounter it. White halo around dead fly are the sporangiophores that have flown off of the fly. Another fly picks up one of those sporangiophores and becomes infected, and cycle restarts. Relative that does the same thing to nematodes. Fire off sporangia from their hyphae, and stick to passing nematode. Colonizes the nematode, producing more hyphae and shoots off more sporangiospores (conidia) All you see in culture are the hyphae; rarely see sporangiospores. On hyphae, nematodes are stuck to them, and nematode gradually gets digested. This is on adult nematodes or nematode eggs.
