@article{fdi:010068238,
  title = {{N}iche-based host extinction increases prevalence of an environmentally acquired pathogen},
  author = {{G}arcia-{P}ena, {G}abriel and {G}architorena, {A}ndres and {C}arolan, {K}{\'e}vin and {C}anard, {E}. and {P}rieur-{R}ichard, {A}. {H}. and {S}uzan, {G}. and {M}ills, {J}. {N}. and {R}oche, {B}enjamin and {G}u{\'e}gan, {J}ean-{F}ran{\c{c}}ois},
  editor = {},
  language = {{ENG}},
  abstract = {{U}nderstanding the ecology of environmentally acquired and multi-host pathogens affecting humans and wildlife has been elusive in part because fluctuations in the abundance of host and pathogen species may feed back onto pathogen transmission. {C}omplexity of pathogen-host dynamics emerges from processes driving local extinction of the pathogen, its hosts and non-hosts. {W}hile the extinction of species may entail losses in pathogen-host interactions and decrease the proportion of hosts infected by a pathogen (prevalence), some studies suggest the opposite pattern. {N}iche-based extinction, based on the species tolerance to environmental conditions, may increase prevalence of infection because the pathogen and its hosts persist, while other species go extinct. {H}ence, understanding prevalence of infection requires disentangling random-and niche-based extinction processes occurring simultaneously. {T}o contribute to this exercise, we analysed the prevalence of an environmentally acquired, multi-host pathogen, {M}ycobacterium ulcerans ({MU}), in a unique dataset of 16 communities of freshwater animals, surveyed during 12 months in {A}konolinga, {C}ameroon in equatorial {A}frica. {T}wo different ecosystems were identified: rivers (lotic) and swamps and flooded areas (lentic). {I}ncreased prevalence of {MU} infection was correlated with niche-based extinction of aquatic host invertebrates and vertebrates in the lentic ecosystems, whereas decreased prevalence was associated with random disassembly of the lotic ecosystems. {T}his finding suggests that random and niche-based extinction of host taxa are key to assessing the effect of local extinction of species on the ecology of environmentally acquired and multi-host pathogens.},
  keywords = {{CAMEROUN} ; {AFRIQUE} {DE} {L}'{EST} ; {ZONE} {EQUATORIALE}},
  booktitle = {},
  journal = {{O}ikos},
  volume = {125},
  numero = {10},
  pages = {1508--1515},
  ISSN = {0030-1299},
  year = {2016},
  DOI = {10.1111/oik.02700},
  URL = {https://www.documentation.ird.fr/hor/fdi:010068238},
}