New Spanish technology to early identify sex sturgeon

The Basque technology center AZTI, in collaboration with the Spanish caviar producer Caviar Riofrío, has patented the first real-time Polymerase Chain Reaction (PCR)-based method for early sex identification in sturgeon.

This technique will enable aquaculture producers to optimize breeding processes for caviar production by identifying the sex of sturgeon as early as 1 to 2 years of age.

Although only female sturgeon produce caviar, producers raise both sexes, leading to significant costs in feeding, space, and management. Until now, sex identification was done using ultrasounds, a more invasive technique that is only viable at later stages of development.

"There was a clear need in the industry for an efficient and accurate method to determine sturgeon sex at early stages. This tool enables more sustainable, cost-effective caviar production," said Miguel Ángel Pardo, AZTI researcher and specialist in food traceability and genetics.

Innovations and technologies based on sustainability and blue economy

AZTI es uno los organismos que aboga por ofrecer nuevas innovaciones y soluciones tecnológicas that enhances sustainability and competitiveness in the sector.

For example, it launched a tool to help marine planning professionals and competent authorities apply ecosystem-based approach principles more effectively in the marine spatial planning of uses (MSP).

Furthermore, in collaboration with the Spanish tuna industry groups OPAGAC and ANABAC, the Basque center developed a system to improve the safe release of vulnerable elasmobranchs (sharks and rays) accidentally caught in tropical tuna purse-seine fisheries.