  Most of zoonoses are multi-host parasites with multiple transmission routes
that are usually investigated separately despite their potential interplay. As
a unifying framework for modelling parasite spread through different paths of
infection, we suggest "ecomultiplex" networks, i.e. multiplex networks
representing interacting animal communities with (i) spatial structure and (ii)
metabolic scaling. We exploit this ecological framework for testing potential
control strategies for $T. cruzii$ spread in two real-world ecosystems. Our
investigation highlights two interesting results. Firstly, the ecomultiplex
topology can be as efficient as more data-demanding epidemiological measures in
identifying which species facilitate parasite spread. Secondly, the interplay
between predator-prey and host-parasite interactions leads to a phenomenon of
parasite amplification in which top predators facilitate $T. cruzii$ spread,
offering theoretical interpretation of previous empirical findings. Our
approach is broadly applicable and could provide novel insights in designing
immunisation strategies for pathogens with multiple transmission routes in
real-world ecosystems.
