Aquaculture

Nitrifying biofilters are essential components of recirculating aquaculture systems (RAS) for nitrification. Beyond this primary function, their role in shaping the microbial environment for fish remains underappreciated. We previously hypothesized that mature biofilters would resist bacterial invasions and suppress the proliferation of rapid-growing heterotrophic bacteria. We performed two exper…

Understanding the behavior of Atlantic salmon ( Salmo salar ) in commercial sea cages is critical for developing effective strategies to manage parasites. It is particularly relevant since many preventive measures, such as lice skirts, snorkel cages, and submerged systems, aim to limit encounters between salmon and lice in the upper part of the water column. Furthermore, behavior is also a recogn…

Vateritic otoliths, abnormal calcium carbonate crystals that can replace aragonite in the inner ears of fish, occur far more frequently in hatchery-reared than wild salmonids and are associated with impaired hearing, reduced predator evasion, and potentially lower post-release survival. Because hatchery and aquaculture programs are increasingly important for food supply and stock enhancement, ide…

The maturation process in salmonids, particularly Salvelinus fontinalis , under artificial breeding conditions is associated with phenomena that reduce production yield. Triploid populations are not affected by gonadal maturation, suggesting that triploidy could mitigate these losses. However, the impact of triploidy on meat quality requires thorough evaluation. This study compares diploid males,…