title: Coevolutionary biology: sex and the geographic mosaic of coevolution.
abstract: Natural selection can favor the coexistence of sexual and asexual forms of a species even within a single ecosystem, when hotspots of coevolution between hosts and parasites occur next to coldspots.
authors.affiliation: Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, Santa Cruz, CA 95060, USA. thompson@biology.ucsc.edu
authors.forename: John N
authors.initials: JN
authors.lastname: Thompson
mesh_terms: D000818:Animals; D005075:Biological Evolution; D004372:Ducks / Q000469:parasitology / Q000502:physiology; D005247:Feeding Behavior; D005260:Female; D005843:Geography; D006790:Host-Parasite Interactions; D008297:Male; D008954:Models, Biological; D012908:Snails / Q000235:genetics / Q000469:parasitology / Q000502:physiology*