Where Are the Parasites?

摘要

The review by E. Post et al. ("Ecological dynamics across the Arctic associated with recent climate change," 11 September, p. 1355) paid little heed to parasites and other pathogens. The rapidly growing literature on parasites in arctic and subarctic ecosystems provides empirical and observational evidence that climate-linked changes have already occurred. The life cycle of the protostrongylid lungworm of muskoxen, Umingmakstrongylusrnpallikuukensis, has changed (1), and the range of that organism and the winter tick, Dermacentor albipictus, has expanded (2).