Effects of host condition on susceptibility to infection, parasite developmental rate, and parasite transmission in a snail–trematode interaction

摘要: Whether or not organisms become infected by parasites is likely to be a complex interplay between host and parasite genotypes, as well the physiological condition of both species. Details this are very important because physiology-driven susceptibility has potential confound genetic coevolutionary responses. Here we concentrate on how aspects infection may interfere with genetic-based infectivity in snail–trematode (Potamopyrgus antipodarum/Microphallus sp.) interaction asking: (1) does affect infection? (2) survival individuals? We manipulated experimentally varying resources. Contrary our expectation, did infection, suggesting that genetics more than physiology regard. However, hosts poor had higher parasite-induced mortality good condition. Taken together, these results suggest interactions depend condition, altering susceptibility, but rather affecting likelihood transmission.