From: A theoretical derivation of response to selection with and without controlled mating in honeybees
Variable | Definition |
---|---|
t | Subscript referring to the year. If variables are used without this subscript it is assumed that they are constant for all years |
\(B_t\) / \(P_t\) | Average true breeding value of breeding/passive colonies of year t \(=B_t-B_{t-1}\) (resp. \(=P_t-P_{t-1}\)) Annual genetic gain among the breeding/passive colonies \(=B_t-P_t\). |
\(\Delta B_t\) / \(\Delta P_t\) | |
\(D_t\) | Genetic lag between the breeding population and the passive population |
T | Time lag, time it takes for the passive population to reach the genetic level of the breeding population |
\(p_t\), p | Probability that a sire drone in an uncontrolled mating comes from a breeding colony |
\(q_t\), q | Proportion of passive queens with a dam queen from the breeding population |
\(S_{1,t}\), \(S_1\) | Genetic selection differential of colonies selected for breeding queen production |
\(S_{2,t}\), \(S_2\) | Genetic selection differential of colonies selected for DPQ production |
\(N_b\) / \(N_p\) | Number of breeding/passive colonies per year |
\(h^2_m\) / \(h^2_d\) | Maternal/direct heritability |
\(r_{md}\) | Correlation between maternal and direct effects |