Causes and consequences of vateritic otoliths in hatchery-reared Coho Salmon

Coho Salmon use their ear bones, called otoliths, for hearing and balance. Sometimes, these ear bones can develop a deformity called vaterite, which results in severe hearing impairment. This deformity is significantly more common in salmon raised in hatcheries than those in the wild. Our project aims to determine what causes vateritic otoliths to form in hatchery-raised Coho Salmon and how it impacts their ability to survive. To do this, we will analyze otoliths collected from different Strait of Georgia hatcheries, conduct various experimental rearing trials at Goldstream hatchery, and PIT (passive integrated transponder) tag fish to track their survival. By doing this, we will be able to identify practices that contribute to vateritic otoliths and thus, help improve the success of Coho Salmon hatchery and conservation efforts.

Faculty Supervisor:

Francis Juanes

Student:

Partner:

Pacific Salmon Foundation

Discipline:

Life Sciences

Sector:

Agriculture; Other services (except public administration); Professional, scientific and technical services

University:

University of Victoria

Program: