Mixotricha

Mixotricha
Scientific classification
Domain: Eukaryota
Clade: Metamonada
Phylum: Parabasalia
Class: Cristamonadea
Order: Calonymphida
Family: Mixotrichidae
Boscaro & Keeling 2024
Genus: Mixotricha
Sutherland 1933
Species:
M. paradoxa
Binomial name
Mixotricha paradoxa
Sutherland 1933

Mixotricha paradoxa is a species of protozoan that lives inside the gut of the Australian termite species Mastotermes darwiniensis.

It is composed of five different organisms: three bacterial ectosymbionts live on its surface for locomotion and at least one endosymbiont lives inside to help digest cellulose in wood to produce acetate for its host(s).

Mixotricha mitochondria degenerated into hydrogenosomes and mitosomes and lost the ability to produce energy aerobically by oxidative phosphorylation. The mitochondria-derived nuclear genes were however conserved.