Parasites in hybridizing communities: the red queen again?
Over the past two decades, infection levels in hybrids have frequently been compared with those in their progenitor species to find out whether parasites favour or penalize hybridization. Four static infection scenarios are possible, depending on whether hybrid resistance differs from that of one or both parental species. All four alternatives have been supported by some empirical data, but any potential dynamics might have been overlooked because of limited sampling or experimental designs. However, coevolutionary oscillations generated by frequency-dependent selection might provide a better explanation for the observed results than does a static genetic perspective of host resistance.
Wolinska
Justyna
J
Indiana University, Department of Biology, 1001 East Third Street, Bloomington, IN 47405, USA. jwolinsk@indiana.edu
Lively
Curtis M
CM
Spaak
Piet
P
D000818:Animals; D005075:Biological Evolution; D004198:Disease Susceptibility; D017753:Ecosystem; D004777:Environment; D006790:Host-Parasite Interactions / Q000235:genetics / Q000502:physiology*; D006801:Humans; D006824:Hybridization, Genetic; D011157:Population Dynamics; D012641:Selection, Genetic; D013045:Species Specificity