August 12, 2021 — When the Gloucester Marine Genomics Institute opened its doors in 2013, the first major project undertaken by its researchers focused on the gene sequencing of the region’s iconic species of Atlantic cod.
It was fitting. The species was the very lifeblood of the regional groundfish fishery through centuries and the economic engine that drove the commercial fishing industry through its halcyon era.
The cod project led to GMGI’s first published paper in 2017. Four years later, GMGI researchers have built on that first study by publishing a second manuscript detailing the development of a new genetic tool to help distinguish between spring-spawning and winter-spawning cod, as well as males and females, in the western Gulf of Maine.
The study, published in the August edition of the journal “Ecology and Evolution” could prove a boon to marine researchers and fishery biologists by bringing sharper resolution to stock assessments and applying the best science to understand the complex fishery, said Tim O’Donnell, a senior research associate at GMGI and lead author on the study.
“The original work at GMGI was pretty similar to this, but they used a slightly different technique and way fewer individuals (cod),” O’Donnell said.