Great stuff Saro.
I think both the bacteria
Photorhabdus asymbiotica and entomopathogenic nematodes such as
Heterorhabditis bacteriophora and others could well be implicated in morgs. I also think that Kat's right, its more complicated than this.
Saro, one set of analysis that I maybe able to get running, via a number of labs, is to try and culture
Photorhabdus asymbiotica - from my dead fungus gnats and from skin samples.
P.asymbiotica is a fungus gnat pathogen remember. Gardeners and farmers are using entomopathogenic nematodes to infect fungus gnat pests so that once infected, the bacteria can burst from the nematode and kill the gnat.
Check out "
Poster code 14" Comparison of efficacy of entomopathogenic nematode species against fungus gnat, Bradysia coprophila, in floriculture : IPN Web
Jo xxx