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Migration as an escape from parasitism in New Zealand galaxiid fishes

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.
Springer Nature (opens in a new tab)

Variation in Helminth Parasite Component Communities of Gambusia affinis.

Results indicate that helminth assemblages infecting mosquitofish in the Paluxy River vary through time and space, as well as in response to environmental variation (i.e., changes in water flow).
PubMed (opens in a new tab)

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…
BioOne (opens in a new tab)

Parasitism in Gambusia affinis: Fitness Effects in an Incipient Matrotroph.

Results indicate that some parasitic helminth species negatively affect the fitness of G. affinis, while some positively affect fitness, and that effect can vary with intensity.
PubMed (opens in a new tab)

New evidence on a cold case: trophic transmission, distribution and host-specificity in Hedruris spinigera (Nematoda: Hedruridae).

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.
PubMed (opens in a new tab)

Genetic structure in a progenetic trematode: signs of cryptic species with contrasting reproductive strategies.

Two lines of evidence, molecular and ecological, support the distinction between these two species and suggest scenarios for their divergence.
PubMed (opens in a new tab)

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.
Springer Nature (opens in a new tab)

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.
Cambridge Press (opens in a new tab)

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.
BioOne (opens in a new tab)

Life cycle truncation in a trematode: does higher temperature indicate shorter host longevity?

It is suggested that environmental cues, such as temperature and encystment site, may signal transmission opportunities to the parasite so that it may adjust its developmental strategy accordingly.
PubMed (opens in a new tab)
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