Suprise! Invasive crawdad has three sets of chromosomes and clones itself

Kind of an unusual tale of parthenogenesis, but the marbled crayfish, a relative newcomer to the scene, appears to encompass an entirely female lineage which reproduces asexually.

http://www.sciencemag.org/news/2018/02/aquarium-accident-may-have-given-crayfish-dna-take-over-world

While typically at a disadvantage in the wild, clones have a unique ability to colonize new environments by themselves. The marbled crayfish weighs in with a hefty genome, and three sets of chromosomes, which may help it colonize new landscapes. Very reminiscent of plants-- granny smith apples, bananas, poplars, etc. I'm very keen to follow this research.