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fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Kelly, A.; Hatcher, M.J.; Dunn, A.M. (2003)
Languages: English
Types: Article
Although purely vertically transmitted parasites are predicted to cause low pathogenicity in their hosts, the effects of such parasites on host fitness under stressful environmental conditions have not previously been assessed. Here, we investigate the effects of Nosema granulosis, a vertically transmitted, microsporidian parasite of the brackish water amphipod Gammarus duebeni, on host growth and survival under conditions of host–host competition and limited food. The parasite had no effect on host survival, but caused a reduction in juvenile growth. Stressful environmental conditions also led to a reduction in G. duebeni growth. However, we found no evidence to support the prediction that parasitized hosts would suffer a greater reduction in fitness than uninfected hosts under adverse environmental conditions. We interpret our results in the context of selection for successful vertical parasite transmission.\ud \ud
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    • Helgolander wissenschaftliche Meeresuntersuchungen 31, 1-33.
    • CRAWLEY, M. J. (1993). GLIM for Ecologists. Blackwell Scientific Publications, Oxford.
    • DUNN, A. M., HATCHER, M. J., TERRY, R. S. & TOFTS, C. (1995). Evolutionary ecology of vertically transmitted parasites : transovarial transmission of a microsporidian sex ratio distorter in Gammarus duebeni. Parasitology 111 (Suppl.), S91-S109.
    • DUNN, A. M. & MCCABE, J. (1995). Resource-allocation to young - seasonal patterns within and between Gammarus duebeni populations. Oikos 73, 199-202.
    • DUNN, A. M. & SMITH, J. E. (2001). Microsporidian life cycles and diversity ; the relationship between virulence and transmission. Microbes and Infection 3, 381-388.
    • DUNN, A. M., TERRY, R. S. & SMITH, J. E. (2001). Transovarial transmission in the Microsporidia. Advances in Parasitology 48, 57-100.
    • EBERT, D. & HERRE, E. A. (1996). The evolution of parasitic diseases. Parasitology Today 12, 96-101.
    • EWALD, P. W. (1987). Transmission modes and the evolution of the parasite-mutualism continuum. Annals of the New York Academy of Sciences 503, 295-306.
    • EWALD, P. W. (1994). Evolution of Infectious Disease. Oxford University Press, New York.
    • HERRE, E. A. (1993). Population structure and the evolution of virulence in nematode parasites of fig wasps. Science 259, 1442-1444.
    • HURST, G. D. D. & MAJERUS, M. E. N. (1993). Why do maternally inherited microorganisms kill males ? Heredity 71, 81-95.
    • IWANO, H. & ISHIHARA, R. (1991). Dimorphism of spores of Nosema spp. in cultured cells. Journal of Invertebrate Pathology 57, 211-219.
    • IWANO, H. & KURTTI, T. J. (1995). Identification and isolation of dimorphic spores from Nosema furnicalis (Microspora : Nesematidae). Journal of Invertebrate Pathology 65, 230-236.
    • JAENIKE, J., BENWAY, H. & STEVENS, G. (1995). Parasite-induced mortality in mycophagous Drosophila. Ecology 76, 383-391.
    • KELLY, A., DUNN, A. M. & HATCHER, M. J. (2001 a). Population dynamics of a vertically transmitted, parasitic sex ratio distorter and its amphipod host. Oikos 94, 392-402.
    • KELLY, A., DUNN, A. M. & HATCHER, M. J. (2002). Incomplete feminisation by the microsporidian sex ratio distorter, Nosema granulosis, and reduced transmission and feminisation efficiency at low temperatures. International Journal for Parasitology 32, 825-831.
    • KELLY, A., HATCHER, M. J., EVANS, L. & DUNN, A. M. (2001 b). Mate choice and mate guarding under the influence of a vertically transmitted, parasitic sex ratio distorter. Animal Behaviour 61, 763-770.
    • LAFFERTY, K. D. & KURIS, A. M. (1999). How environmental stress affects the impacts of parasites. Limnology and Oceanography 44, 925-931.
    • LEHMANN, T. (1993). Ectoparasites : direct impact on host fitness. Parasitology Today 9, 8-13.
    • MO¨LLER, A. P., ALLANDER, K. & DUFVA, R. (1990). Fitness effects of parasites on passerine birds : a review. In Population Biology of Passerine Birds : Integrated Approach (ed. Blondel, J., Gosler, A., Lebreton, J. D. & McLeery, R. H.), pp. 269-280. Springer-Verlag, Berlin.
    • OPPLIGER, A., CLOBERT, J., LECOMTE, J., LORENZON, P., BOUDJEMADI, K. & JOHN-ALDER, H. B. (1998). Environmental stress increases the prevalence and intensity of blood parasite infection in the common lizard Lacerta vivipara. Ecology Letters 1, 129-138.
    • SMITH, J. E. & DUNN, A. M. (1991). Transovarial transmission. Parasitology Today 7, 146-148.
    • TERRY, R. S., DUNN, A. M. & SMITH, J. E. (1997). Cellular distribution of a feminising microsporidian parasite : a strategy for transovarial transmission. Parasitology 115, 157-163.
    • Ultrastructural characterisation and molecular taxonomic identification of Nosema granulosis n. sp., a transovarially transmitted feminising (TTF) microsporidium. Journal of Eukaryotic Microbiology 46, 492-499.
    • TERRY, R. S., SMITH, J. E. & DUNN, A. M. (1998). Impact of a novel, feminising Microsporidian on its crustacean host. Journal of Eukaryotic Microbiology 45, 497-501.
    • WASHBURN, J. O., MERCER, D. R. & ANDERSON, J. R. (1991). Regulatory role of parasites : impact on host population shifts with resource availability. Science 253, 185-188.
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