See [Code](https://github.com/Ibasam/IBASAM/blob/master/IBASAM/src/Collection.cpp), lines 751-1004.
See [Code](https://github.com/Ibasam/IBASAM/blob/fdbb06e7920cd1f61e32a2dff36843bb077a4ce6/IBASAM/src/Collection.cpp#L750-L1004).
## Context
Only sexually mature individuals at reproduction time were concerned by this process. They were first grouped in three pools: anadromous females (AF), anadromous males (AM) and mature parr (MP). Mature female parr are only rarely observed in natural populations and were also set to happen very seldom in IBASAM; Parameters were setup according to this hypothesis (see the corresponding SM3 and SM7 parameters in XXXX).