Digest: The Red Queen hypothesis demonstrated by the Daphnia-Caullerya host-parasite system?

摘要

"Now, here, you see, it takes all the running you can do, to keep in the same place." This is what the Red Queen told Alice in "Through the looking-glass and what Alice found there" (Carroll 1871).More than a century later, Van Valen took advantage of that dialogue to spawn the Red Queen hypothesis, which has become themainmodel to explain host-parasite evolutionary dynamics. In brief, Van Valen's Red Queen hypothesis states that species must be in constant change to continue in the same place (Van Valen 1973). In that sense, antagonistic interactions between species lead to coevolution. Though reciprocal adaptation has been widely studied in host-parasite systems, few studies have observed the predicted turnover of genotypes within a natural population in real time.