Journal
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
Volume 276, Issue 1661, Pages 1443-1448Publisher
ROYAL SOC
DOI: 10.1098/rspb.2008.1256
Keywords
parasitic castration; population regulation; spatial dynamics; sexually transmitted diseases; Microbotryum violaceum; Silene latifolia
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This study analyses the effect of host-specific pathogens on range restriction of their hosts across environmental gradients at population margins. Sterilizing diseases can limit host range by causing large reductions in population size in what would otherwise be the central area of a species range. Diseases showing frequency-dependent transmission can also pull back a population from its disease-free margin. A wide range of disease prevalence versus abundance patterns emerge which often differ from the classical expectation of increasing prevalence with increasing abundance. Surprisingly, very few empirical studies have investigated the dynamics of disease across environmental gradients or at range limits.
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