Triploids account for 30% of worldwide Pacific oyster aquaculture production.
A panel of bio-descriptors provided the first picture of gamete quality in triploid Pacific oysters.
The reproductive potential of triploid Pacific oysters could be close to 0.06% of that of diploid.
The low gamete quality observed in triploid Pacific oysters decreases the genetic impact on natural populations and modifies aquaculture practices.