Revolutionizing Manila Clam Production: A Breakthrough in Selective Breeding

Three Months Shorter Production Time. The advancement of selective breeding techniques has proven to be a game-changer in the enhancement of desirable traits across fish and livestock. Now, Manila clam has its own dedicated breeding program.

The scientific name for Manila clam, Ruditapes philippinarum, is now being cultivated in Italy by a pioneering company called Naturedulis. Located near the nutrient-rich Goro Lagoon, this hatchery produces juvenile clams that are supplied to local shellfish farmers. The company’s goal is to exploit the natural potential of these clams through selective breeding, optimizing the lagoon’s nutrient use and increasing overall production capabilities.

This innovative ambition has culminated in a project known as Bivalvi, which integrates Naturedulis’ extensive expertise in clam cultivation with the breeding science knowledge contributed by Nofima.

Advancements in Clam Cultivation

As of early 2025, farmers began seeding the first batches of clams tailored for expedited growth. “We expect these clams to be market-ready by Christmas 2025, slashing the production cycle by at least three months,” stated Leonardo Aguiari from Naturedulis in November.

Aguiari further emphasized that the Bivalvi project has been transformative for both the hatchery and the local clam-centered economy.

A Legacy of Breeding Excellence

Since the 1960s, Nofima has been at the forefront of developing breeding programs across a diverse range of species in collaboration with industry partners. This encompasses numerous cold-water fish species such as salmon and cod, as well as warm-water varieties like tilapia. Over time, these breeding programs have evolved in sophistication and effectiveness.

“The Manila clam is the latest species to benefit from our geneticists’ breeding efforts,” said project leader Anna Sonesson. She expressed pride in contributing to the breeding of low-trophic species like clams.

“Shellfish breeding is still relatively rare in Europe. While sustainability in food production increasingly emphasizes moving down the food chain, there is a gap in breeding low-trophic species. This oversight prevents the industry from achieving improved efficiency, health, product quality, and reduced mortality rates,” Sonesson explained.

Collaboration and Funding

The Bivalvi project is supported by ERA-NET BlueBio and involves collaboration between Nofima, Naturedulis, and the University of Bologna.

Image: Evan Durland, Nofima