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Letteratura scientifica selezionata sul tema "Ecology parasite"

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Tesi sul tema "Ecology parasite"

1

Prior, Kimberley Faith. "The evolutionary ecology of circadian rhythms in malaria parasites." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/29562.

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Abstract (sommario):
Biological rhythms are thought to have evolved to enable organisms to organise their activities according to the Earth’s predictable cycles, but quantifying the fitness advantages of rhythms is challenging and data revealing their costs and benefits are scarce. More difficult still is explaining why parasites that exclusively live within the bodies of other organisms have biological rhythms. Rhythms exist in the development and traits of parasites, in host immune responses, and in disease susceptibility. This raises the possibility that timing matters for how hosts and parasites interact and,
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2

Tompkins, Daniel Michael. "Evolutionary ecology of bird-parasite associations." Thesis, University of Oxford, 1996. http://ora.ox.ac.uk/objects/uuid:a5f5ea19-b799-490b-b738-99ff52df25c1.

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Abstract (sommario):
This thesis investigates the ecological determinants of chewing louse (Insecta: Phthiraptera) host-specificity on four species of Malaysian swiftlets (Aves: Apodidae). Influences of host coloniality on louse ecology were also demonstrated, illustrating the dependence which these permanent ectoparasites have on their hosts. Louse collections were made to look for incidences of host-specific lice occurring on the "wrong" host ("straggling"). Straggling was observed, implying that lice disperse among host species. Thus, opportunity for louse dispersal (or lack thereof) does not govern the host-sp
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3

Gregory, Richard D. "Host-parasite interactions : population and community ecology." Thesis, University of Oxford, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.276582.

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4

O'Brien, Chris. "Appreciating the Importance of Parasites: Analyzing and Understanding the Ecology of Parasite-Host Interactions." Diss., The University of Arizona, 2008. http://hdl.handle.net/10150/194212.

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Abstract (sommario):
There is a growing interest in the nature of parasite-host interactions, the role these relationships play in ecological communities, and how human activities alter these associations. Furthermore, because inference about these interactions is usually gained by methods of statistical hypothesis testing, additional importance should be placed on the analysis and interpretation of parasite-host interactions. In this dissertation I address these ideas in three separate but interrelated studies with the three following questions: 1) How do two parasites with complex life-cycles alter the behavi
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5

Mahmud, Muayad Ahmed. "Evolutionary ecology of virulence in a fish parasite." Thesis, University of Nottingham, 2016. http://eprints.nottingham.ac.uk/32945/.

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Abstract (sommario):
Virulence (parasite- induced host fitness reduction) is thought to correlate positively with pathogen reproduction rates, but its relationship with pathogen transmission is likely to be determined by a trade- off between the costs and benefits of harming hosts. This project aims to investigate factors which affect host-parasite interactions and particularly those which may play a role in virulence evolution. In doing so, it describes experiments carried out using a monogenean ectoparasitic flatworm (Gyrodactylus arcuatus) and its three-spined stickleback (Gasterosteus aculeatus) host. Populati
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6

Lynsdale, Carly L. "Evolutionary ecology of parasite infection in Asian elephants." Thesis, University of Sheffield, 2017. http://etheses.whiterose.ac.uk/19058/.

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7

Jackson, M. H. "The epidemiology and ecology of toxoplasmosis." Thesis, University of Strathclyde, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381379.

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8

Keeling, Matthew James. "The ecology and evolution of spatial host-parasite systems." Thesis, University of Warwick, 1995. http://wrap.warwick.ac.uk/30/.

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Abstract (sommario):
All ecological and epidemiological systems are embedded in space and composed of individuals; these facts often have a profound effect on the dynamics and means many tools and definitions require reformulation. Modelling has always been about taking highly complex dynamical systems, such as the natural environment, and attempting to simplify them to a leve that can be conceptualised, in the process losing all the features that are not understood or not anticipated. The individual based spatial models which form the basis of this work start from the simple rules for individuals and build up to
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9

Fedna, Jimmy. "Prévalence du parasite Angiostrongylus cantonensis en Haïti chez les rats et gastéropodes." Electronic Thesis or Diss., Bourgogne Franche-Comté, 2024. http://www.theses.fr/2024UBFCD017.

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Abstract (sommario):
Ma recherche examine la prévalence et la répartition du parasite Angiostrongylus cantonensis en Haïti, également connu sous le nom de ver pulmonaire du rat, et qui est la première cause de méningite à éosinophiles chez l’homme dans le monde. Ce parasite a un cycle de vie complexe impliquant à la fois des hôtes définitifs (rats) et des hôtes intermédiaires (escargots et les limaces). J’ai documenté l'écologie du parasite et sa persistance deux décennies après sa découverte initiale dans le pays. Trois objectifs ont été fixés : synthétiser les connaissances sur les dimensions spatiales et écolog
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10

Aguirre, Macedo Maria Leopoldina. "Study on helminth and other parasite communities of oysters." Thesis, University of Exeter, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337758.

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