Tip of The Day - October 26, 2016

Photo by Tom Semadeni

Snowy Road

Historical Generations

The simulation process is divided into two parts. Part One consists of Mehdi Sargolzaei's QMSim program which will conduct the historical generations from the point of the melting of the ice glaciers in Canada to present day when the fish were sampled mainly from the St John River in New Brunswick. A total of 2500 historical generations will be simulated.

A genome with 27 pairs of chromosomes, 27,000 QTLs and 108,000 SNP markers will be assumed. At the end the 12,000 QTLs that are not fixed and 30,000 markers will be saved. For the QTLs, each will be simulated with 2 to 7 alleles possible. The linkage disequilibrium will be known at the end of those generations.

From the last historical generation a random sample of 100 males and 150 females will be chosen as the founders for each of the first four year classes, for the start of the hatchery operations. This part of the simulation represents the pre-hatchery phase, or the wild-life stage of the North American Atlantic salmon.

Photo by Tom Semadeni

Stream in Snow