FISH are the gender-benders par excellence of the animal kingdom, and a study of cells from the testes of trout is helping to reveal why.
Goro Yoshizaki and his team from Tokyo University of Marine Science and Technology in Japan investigated the germ cells from adult male rainbow trout that normally give rise to sperm. When they took these cells and transplanted them into the body cavities of female hatchlings, they migrated to the host fishes’ ovaries. There they developed into eggs that when fertilised grew into healthy offspring (Proceedings of the National Academy of Sciences, DOI: 10.1073/pnas.0509218103).
This…
