Instead, the parasitoids contact the host at random, governed by the encounter probability rate and once encountered, the chance to penetrate inside the host cell and develop the infection strongly depends on the degree of host susceptibility.
As such, their strategy for persistence is more of a game of Russian roulette, where the chance of survival is dependent on the susceptibility of the host. sinerae as a potential key player in community ecology, where in mixed dinoflagellate communities consisting of hosts that are highly susceptible to infection, parasitoid preferences may mediate coexistence between host species, reducing the dominance of the superior competitor. doi: 10.3389/fmicb.2016.00769 © 2016 Alacid, Park, Turon, Petrou and Garcés.
Here, we present for the first time, the strategy by which a generalist dinoflagellate parasitoid seeks out its host and determine whether it exhibits host preferences, highlighting key factors in determining infection.Our results demonstrate that in its infective stage, P.sinerae is able to sense potential hosts, but does not actively select among them.New molecular tools have revealed that parasitism is a widespread interaction in aquatic microbial communities with a high diversity of unclassified parasites (Lefèvre et al., 2008; de Vargas et al., 2015) even in marine ecosystems not considered previously (Cleary and Durbin, 2016). There is increasing evidence that protist parasites may have a significant effect on plankton at the population, community, and ecosystem levels (Chambouvet et al., 2008; Lepère et al., 2008). Alternatively, it may increase competition, leading to species exclusion. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY).If, however, highly susceptible hosts are absent from the community, the parasitoid population could suffer a dilution effect maintaining a lower parasitoid density. doi: 10.1016/S0964-5691(00)00056-9 Cross Ref Full Text | Google Scholar Alacid E, Park MG, Turon M, Petrou K and Garcés E (2016) A Game of Russian Roulette for a Generalist Dinoflagellate Parasitoid: Host Susceptibility Is the Key to Success. The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice.Rihanna has yet to publicly discuss the February altercation with her ex-boyfriend, Chris Brown.But on "Russian Roulette"-her first single since the incident occurred-she seems to touch upon the agony it caused her."Say a prayer to yourself/He says close your eyes, sometimes it helps," Rihanna sings over a steady pulse."And you can see my heart beating/You can see it through my chest/ That I'm terrified, but I'm not leaving/Know that I must pass this test." The song recalls Rihanna's previous dark ballad "Unfaithful," but it's far grittier in tone-it ends with the sound of a gun being cocked and fired-and her vocals are heavier with emotion.