Rational map associated with the Sigmoid Beverton-Holt model on the projective line over ${\mathbb{Q}}_p$

We describe the dynamical structure of the $p$-adic rational dynamical systems associated with the Sigmoid Beverton-Holt model on the projective line over the field ${\mathbb{Q}}_p$ of $p$-adic numbers. Our methods are minimal decomposition of $p$-adic polynomials with coefficients in ${\mathbb{Z}}_p$ established by Fan and Liao and the chaotic description of $p$-adic repellers of Fan, Liao, Wang and Zhou.