%0 Journal Article %T A strong colonizer rules the trematode guild in an intertidal snail host %J The Bulletin of the Ecological Society of America - Wiley Online Library %D 2019 %R https://doi.org/10.1002/bes2.1555 %X Inside a snail, trematodes interact with each other with outcomes that depend on facilitation, competition, and preemption, suggesting that dominant species should be common. However, inside the snail host Heleobia australis (Bah¨ªa Blanca estuary, Argentina), the weak competitor Microphallus simillimus was the most abundant trematode species. This parasite shows life©\history traits associated with higher colonization ability that could increase its probability of invading the host first. We found that M. simillimus ruled the species©\rich trematode guild through strong recruitment and (potentially) preemption. Extremely skewed species abundance distributions, like this one, can derive from extremely skewed colonization abilities. These photographs illustrate the article ¡°A strong colonizer rules the trematode guild in an intertidal snail host¡± by Pilar Alda, Nicol¨¢s Bonel, N¨¦stor J. Cazzaniga, Sergio R. Martorelli, and Kevin D. Lafferty published in Ecology. https://doi.org//10.1002/ecy.269 %U https://esajournals.onlinelibrary.wiley.com/doi/full/10.1002/bes2.1555