Sci Rep. 2018 Jun 22;8(1):9500. doi:10.1038/s41598-018-27805-3

Lajbner Z, Pnini R, Camus MF, Miller J, Dowling DK.

Experimental evidence that thermal selection shapes mitochondrial genome evolution.

Experimental evidence for the “mitochondrial climatic hypothesis”. Haplotypes only differ by non-coding or synonymous changes. Wolbachia infection was a confounding factor and needed to be removed by antibiotic treatment.