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Seasonal Dynamics of Two Mortality-Related Trematodes Using an Introduced Snail
Abstract Seasonal dynamics of 2 trematode species, Cyathocotyle bushiensis and Sphaeridiotrema globulus, were assessed in relation to life history traits of the parasites and their hosts, as well as…
Migration as an escape from parasitism in New Zealand galaxiid fishes
- R. Poulin, G. Closs, A. W. Lill, A. Hicks, K. Herrmann, D. Kelly
- Biology, Environmental ScienceOecologia
- 24 January 2012
Migration spares juvenile fish from the debilitating parasites to which they would be exposed in adult stream habitats, demonstrating that migration provides protection from infection as a coincidental side-effect.
Genetic structure in a progenetic trematode: signs of cryptic species with contrasting reproductive strategies.
New evidence on a cold case: trophic transmission, distribution and host-specificity in Hedruris spinigera (Nematoda: Hedruridae).
- J. Luque, F. M. Vieira, K. Herrmann, T. King, R. Poulin, C. Lagrue
- BiologyFolia parasitologica
- 1 September 2010
It is suggested here that the anatomy of the fish digestive tract and especially that of the stomach plays an important role in host suitability for H. spinigera.
Encystment site affects the reproductive strategy of a progenetic trematode in its fish intermediate host: is host spawning an exit for parasite eggs?
Investigation of temporal variation of progenesis in Stegodexamene anguillae in one of its second intermediate fish hosts and the effect of the fish's reproductive cycle on progenesis found it to be conditional on whether or not the parasite can benefit from fish spawning.
Life cycle truncation in a trematode: does higher temperature indicate shorter host longevity?
Differences in Natural Infections of Two Mortality-Related Trematodes in Lesser Scaup and American Coot
Results show different infection levels of these 2 parasites in the 2 bird species; C. bushiensis is found more frequently in coot, and S. globulus is more common in scaup, which is interesting because both bird species are presumed to forage on the same snail population and thus should be experiencing the same extent of exposure.
Geographic Variation in Life Cycle Strategies of a Progenetic Trematode
The present study is the first to compare life cycle strategies among parasite populations, providing insight into the often unrecognized plasticity in parasite developmental strategies and transmission.
The missing host hypothesis: do chemical cues from predators induce life cycle truncation of trematodes within their fish host?
The results suggest that chemical cues from the definitive A. australis host do not affect the frequency of life cycle abbreviation in S. anguillae, suggesting that factors other than A. Australs host presence or abundance may be the important selective forces for life cycle abbreviviation in this fish parasite.
Helminth parasite assemblages in two cyprinids with different life history strategies
Examining helminth parasite assemblages in two cyprinids with contrasting reproductive strategies showed that standard length was a better predictor of parasitic infection than the gonadosomatic index, and as such multiple species and life history traits should be considered when investigating host–parasite relationships.