Toxoplasmosis in prey species and consequences for prevalence in feral cats: not all prey species are equal

Parasitology - Tập 134 Số 14 - Trang 1963-1971 - 2007
Eve Afonso1,2,3,4,5, P. Thulliez6, Dominique Pontier3,4,5, Emmanuelle Gilot‐Fromont3,4,5
12C2A – CERFE, 08240 Boult-aux-Bois, France
2Laboratoire de Parasitologie – Mycologie, EA 3800, UFR Médecine, Université de Reims Champagne-Ardenne, 51 rue Cognacq Jay, Hôpital Maison Blanche, 51096 Reims cedex, France
3UMR 5558, Laboratoire de Biométrie et Biologie Evolutive, 43 boulevard du 11 novembre 1918, Villeurbanne F-69622, France
4Université Lyon 1
5Université de Lyon
6Laboratoire de la Toxoplasmose, Institut de Puériculture et de Périnatalogie, 26 boulevard Brune, 75014 Paris, France

Tóm tắt

SUMMARY

Toxoplasma gondiiis largely transmitted to definitive felid hosts through predation. Not all prey species represent identical risks of infection for cats because of differences in prey susceptibility, exposure and/or lifespan. Previously published studies have shown that prevalence in rodent and lagomorph species is positively correlated with body mass. We tested the hypothesis that different prey species have different infection risks by comparing infection dynamics of feral cats at 4 sites in the sub-Antarctic Kerguelen archipelago which differed in prey availability. Cats were trapped from 1994 to 2004 and anti-T. gondiiIgG antibodies were detected using the modified agglutination test (⩾1:40). Overall seroprevalence was 51·09%. Antibody prevalence differed between sites, depending on diet and also on sex, after taking into account the effect of age. Males were more often infected than females and the difference between the sexes tended to be more pronounced in the site where more prey species were available. A difference in predation efficiency between male and female cats may explain this result. Overall, our results suggest that the composition of prey items in cat diet influences the risk ofT. gondiiinfection. Prey compositon should therefore be considered important in any understanding of infection dynamics ofT. gondii.

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Parasitology

Tập 134 Số 14

1963-1971

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