The complete mitochondrial genome of the cat flea, .

The cat flea, , is widely recognized as a global veterinary pest and a vector of pathogenic bacteria. We recently reported on the . nuclear genome, which is characterized by over 38% protein coding gene duplication, extensive tRNA gene family expansion, and remarkable gene copy number variation (CNV) between individual fleas.

Evolution of mutualism and reproductive parasitism: insight from two novel strains that co-infect cat fleas.

Wolbachiae are obligate intracellular bacteria that infect arthropods and certain nematodes. Usually maternally inherited, they may provision nutrients to (mutualism) or alter sexual biology of (reproductive parasitism) their invertebrate hosts. We report the assembly of closed genomes for two novel wolbachiae, CfeT and CfeJ, found co-infecting cat fleas () of the Elward Laboratory colony (Soquel, CA, USA).