A Seasonal Sex Difference in the Infestation of Rabbits with the Nematode Trichostrongylus retortaeformis (Zeder, 1800)

Bull, P. C.

doi:10.1038/184281a0

Cited by 20 publications

(12 citation statements)

References 7 publications

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“…female partridges with S. trachea) is always parasitized more heavily, or whether during some periods of the year or phases of adult life the other sex is equally, or more, vulnerable. Relevantly, Bull (1959) discovered a seasonal difference between the sexes in wild European rabbits, in New Zealand, infected with the nematode Trichostron&.u retortaefomis: the mean number of worms per rabbit being lower in males in the summer, and in females in the winter.…”

Section: Male Spleenmentioning

confidence: 96%

Parasites and the avian spleen: helminths

John¹

1995

Biological Journal of the Linnean Society

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A comparative analysis of the relationship between the spleen–a major organ of immunity and helminths was undertaken with bird species, using the phylogenetic regression technique. Species in which many individuals are infected with nematodes relative to the number of individuals examined for the presence of helminths (termed ‘relative nematode presence’) have significantly larger spleens, for a given body weight, in females (though not in males). There was little indication that this relationship depends on incidental ecological indices, the weights of other organs, or the ‘relative presences' of trematodes, cestodes or haematozoa. Combined with previous, experimental, work it suggests that the avian spleen is important in resisting nematodes. Body weight is correlated with the relative presence of helminths; but even after removing body size effects, bird species which tend to be infected with trematodes are also more likely to be infected with cestodes. This paper indicates that the spleens of wild bird species are associated with macroparasites in the natural environment.

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Section: Male Spleenmentioning

confidence: 96%

Parasites and the avian spleen: helminths

John¹

1995

Biological Journal of the Linnean Society

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“…Boag (1985) and Butler (1994) agreed in that no significant differences exist between males and females in prevalences by Cestodes and Nematodes. Most authors believe that differences in parasitation intensities of T. retortaeformis (Bull, 1959;Dunsmore and Dudzinski, 1968), G. strigosum (Dunsmore, 1966 ft) and P. ambi guus (Dunsmore, 1966 C;Dunsmore and Dudzinski, 1968) between males and females are related to the season. Thus, females show higher rates than males during reproductive periods and an opposite tendence is observed during the rest of the year.…”

Section: Tpisiformismentioning

confidence: 99%

The helminthfauna ofOryctolagus cuniculus(Linnaeus, 1758) in the Iberian Peninsula. Faunistic and ecological considerations

et al. 1996

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“…Mead -Briggs & Vaughan (1973) found no statistical differences between host sex and two cestode species (A. cuniculi and M. ctenoides), but Blasco et al (1996) detected a higher prevalence of A. cuniculi in females. Some authors consider that host sex does not significantly influence the presence of the nematode species studied (Boag, 1985;Butler, 1994), but in other studies females presented higher mean intensities of G. strigosum (Dudzinski & Mykytowycz, 1963;Dunsmore, 1966b) and T. retortaeformis (Bull, 1959;Dunsmore, 1966c;Blasco et al, 1996). Nevertheless, Boag & Kolb (1989) found the opposite to be the case for these two helminths.…”

Section: Discussionmentioning

confidence: 96%

Influence of host weight, sex and reproductive status on helminth parasites of the wild rabbit, Oryctolagus cuniculus, in Navarra, Spain

Molina

Casanova²,

Feliú³

1999

J. Helminthol.

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A study was carried out in Navarra (northern Spain) on the influence of the weight, sex and reproductive status (lactant, pregnant or lactant + pregnant females and testicular weight for males) of the wild rabbit (Oryctolagus cuniculus) on two cestodes species: Andrya cuniculi and Mosgovoyia ctenoides and four intestinal nematodes: Graphidium strigosum, Trichostrongylus retortaeformis, Nematodiroides zembrae and Dermatoxys hispaniensis. A significantly higher prevalence of A. cuniculi was detected in lactant + pregnant females compared with non-breeding females. Trichostrongylus retortaeformis and N. zembrae showed a significantly higher mean intensity in lactant and lactant + pregnant females than in non-reproductive females. Trichostrongylus retortaeformis presented a higher mean intensity in females than in males, and the mean intensity of the same parasite species was significantly lower in active and inactive males compared with lactant and lactant + pregnant females. There were no significant differences between sexes in the prevalence of helminth parasites. No significant correlation was detected between host weight and the intensity (of infection) of helminths studied. No significant differences in the prevalence and mean intensity of the two cestode species were observed in the three weight categories studied (kittens, juveniles and adults). The prevalence of G. strigosum and mean intensity of T. retortaeformis were significantly higher in older heavier animals than in juveniles.

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A Seasonal Sex Difference in the Infestation of Rabbits with the Nematode Trichostrongylus retortaeformis (Zeder, 1800)

Cited by 20 publications

References 7 publications

Parasites and the avian spleen: helminths

Parasites and the avian spleen: helminths

The helminthfauna ofOryctolagus cuniculus(Linnaeus, 1758) in the Iberian Peninsula. Faunistic and ecological considerations

Influence of host weight, sex and reproductive status on helminth parasites of the wild rabbit, Oryctolagus cuniculus, in Navarra, Spain

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