Kabir A, Ieda R, Hosoya S, Fujikawa D, Atsumi K, Tajima S, Nozawa A, Koyama T, Hirase S, Nakamura O, Kadota M, Nishimura O, Kuraku S, Nakamura Y, Kobayashi H, Toyoda A, Tasumi S, Kikuchi K.

Proc Natl Acad Sci U S A. 2022 Jun 7;119(23):e2121469119. doi:10.1073/pnas.2121469119

Repeated translocation of a supergene underlying rapid sex chromosome turnover in Takifugu pufferfish.

The genome of the green puffer (Takifugu alboplumbeus or T. niphobles) was assembled. SNP analysis of multiple species showed that in three fugu species (T. niphobles, T. snyderi and T. vermicularis), the sex determination locus is not Amrh2 anymore (like it is in T. rubripes), but a new supergene containing GsdfY. This supergene appears to have moved to a new autosome more than once in the evolutionary history of these species.