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Dissertations / Theses on the topic 'Host-parasite relationships'

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Published: 4 June 2021

Last updated: 25 July 2025

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1

Li, Dongmei. "Immune reactions involved in parasitoid-host interactions /." Title page, contents and abstract only, 2002. http://web4.library.adelaide.edu.au/theses/09PH/09phl6926.pdf.

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2

DEBOLT, JACK WARNER. "PARASITIZATION OF LYGUS LINEOLARIS (HEMIPTERA: MIRIDAE) BY LEIOPHRON UNIFORMIS (HYMENOPTERA: BRACONIDAE): HOST DEFENSE AND HOST ACCEPTANCE." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184000.

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The ability of Leiophron uniformis (Gahan) to parasitize 4 Lygus spp. was determined. While L. uniformis readily attacked Lygus hesperus (Knight), L. lineolaris (Palisot de Beauvois), L. elisus Van Duzee, and L. desertinus Knight, only 6.7% of the L. lineolaris attacked were parasitized compared to 84-87% parasitization of the other species. Two factors were found to cause the low rate of parasitism of L. lineolaris. L. uniformis oviposited in (accepted) few of the L. lineolaris nymphs attacked and most eggs found were encapsulated by the host. Nymphs less than 48-hr old were readily parasitiz

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3

Gharbawi, W. Y. A. "Host-parasite relationships of the common goby, Pomatoschistus microps." Thesis, Swansea University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.637049.

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<i>Pomatoschistus microps</i> at Salthouse Point, Burry Inlet, Wales return to the estuary and spawn during June, the 1-group adults then disappear and presumably die but the developing juveniles become heavily parasitized with overdispersed, innocuous, encysted digenean metacercariae namely <i>Cryptocotyle jejuna</i> and <i>C.lingua</i> in subcutaneous muscle, <i>C.concava</i> (Heterophydae), in the body cavity, <i>Labratrema minimus</i> (Bucephalidae), in the liver, <i>Timoniella imbutiforme</i> and <i>T.praeterita</i> (Acanthostoidae) in subcutaneous muscle. Host weight, condition and other

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4

Barr, Kathryn J. "Aspects of the host-parasite relationships of Polymyxa betae." Thesis, University of East Anglia, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334265.

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5

Arnold, Markus F. F. "Host-pathogen interactions in chronic infections." Thesis, University of Aberdeen, 2012. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=192267.

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The BacA protein plays a key role in the symbiosis of Sinorhizobium meliloti with the leguminous plant alfalfa (Medicago sativa) and is proposed to be the transmembrane subunit of an ATP‐binding cassette (ABC) transporter. BacA homologues are also present in Brucella species, enteric bacteria (known as SbmA) and Mycobacterium tuberculosis. The S. meliloti‐alfalfa symbiosis, although beneficial to both partners, can also be viewed as a chronic infection. The M. tuberculosis BacA protein is important for M. tuberculosis for the maintenance of a chronic infection. In order to study the M. tubercu

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6

Bhasin, Amit. "Host location cues of Culicoides spp. (Diptera: Ceratopogonidae)." Thesis, University of Aberdeen, 1996. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=232286.

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This study has investigated the nature of host derived cues used by parous female <I>C. impunctatus </I>in the location of blood meal hosts. Olfaction has been shown to be a vital part of the process. The responses of antennal receptors of females to a variety of host-derived volatile compounds were assessed using the EAG technique. High antennal sensitivity to olfactory cues was indicated by low thresholds for response and, taking into account the volatility of the compounds, a clear hierarchy of response was obtained in which octenol was the most stimulatory, followed by phenolics, lactic ac

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7

Gray, Alexander Bruce. "Host-parasite relationships in tissue cultures of sunflower and downy mildew." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=72834.

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8

Price, Amanda Jane. "Host-pathogen interactions in lentiviral post-entry restriction and nuclear import." Thesis, University of Cambridge, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609671.

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9

Allen, Geoffrey Rowland. "Behaviour and ecology of the primary parasitoids Cotesia urabae and Dolichogenidia eucalypti (Hymenoptera: Braconidae) and their host Uraba lugens (Lepidoptera: Noctuidae)." Title page, contents and preface only, 1989. http://web4.library.adelaide.edu.au/theses/09PH/09pha425.pdf.

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10

Radomiljac, Andrew M. "Santalum album L. plantations: a complex interaction between parasite and host." Thesis, Radomiljac, Andrew M. (1998) Santalum album L. plantations: a complex interaction between parasite and host. PhD thesis, Murdoch University, 1998. https://researchrepository.murdoch.edu.au/id/eprint/270/.

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This thesis examines a broad spectrum of physiological and silvicultural features of the highly valued woody angiosperm hemi-parasite Santalurn album L. (Indian sandalwood) in relation to its culture in plantations in northern Western Australia. Topics covered include allometry of host and Santalum when grown as single plant pairings in both field and pot culture, nutritional interactions between Santalum and beneficial and non-beneficial hosts, deleterious influences of parasitism on plantation productivity and heartwood induction in young trees. In Western Australia sandalwood is grown in

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11

Radomiljac, Andrew M. "Santalum album L. plantations : a complex interaction between parasite and host." Murdoch University, 1998. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20060818.134603.

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This thesis examines a broad spectrum of physiological and silvicultural features of the highly valued woody angiosperm hemi-parasite Santalurn album L. (Indian sandalwood) in relation to its culture in plantations in northern Western Australia. Topics covered include allometry of host and Santalum when grown as single plant pairings in both field and pot culture, nutritional interactions between Santalum and beneficial and non-beneficial hosts, deleterious influences of parasitism on plantation productivity and heartwood induction in young trees. In Western Australia sandalwood is grown in t

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12

Hennecke, Berthold Rembertus. "Host-pathogen interactions between the fungal pathogen Phloeospora mimosae-pigrae and Mimosa pigra, giant sensitive plant /." [St. Lucia, Qld.], 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17081.pdf.

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13

Belmonte, da Silva Rodrigo Caetano. "Saprolegniosis : studies of the host-pathogen interaction in salmonids." Thesis, University of Aberdeen, 2014. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=220447.

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Saprolegnia is a fresh water fish parasite responsible for significant economic losses in the aquaculture industry worldwide. The disease caused by this organism is termed saprolegniosis, being characterized by a mycosis-like infection of gills and fish skin. Without sustainable treatments available for controlling or preventing saprolegniosis, it has become a significant problem especially for salmon farming, frequently affecting the fish after vaccination. Little is known regarding how the fish immune system responds to infection and such information is vital for developing future treatments

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14

Kelly, Colleen Kay. "Host use and foraging in the parasitic plant Cuscuta subinclusa." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184543.

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Foraging theory predicts active responses by organisms upon encounter with a resource, as opposed to the passive responses of differential survivorship and growth. Stems of the parasitic plant Cuscuta subinclusa invest in resource acquisition (coil) relative to host quality in a way predicted by the marginal value theorem (MVT) in that: (1) stem coiling, the necessary antecedent and determinant of resource uptake, precedes exploitation of host materials; and (2) mean coiling on a host species is proportional to: (a) mean growth/haustorium, (b) mean biomass accumulation over the season, and (c)

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15

Lawrie, Charles Henderson. "The molecular basis of tick-host interactions." Thesis, University of Oxford, 1999. http://ora.ox.ac.uk/objects/uuid:0a920ddd-c623-49a6-b971-cb6049b419e3.

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Ticks are obligate haematophagous arthropods that represent a major economic drain upon the world's livestock as well being a significant medical and veterinary risk through the transmission of tick-borne pathogens such as Borrelia burgdorferi, the causative agent of Lyme disease. The tick-host relationship is a function of both ecological and physiological factors. Successful feeding requires the effective acquisition and digestion of a bloodmeal by the tick. Acquisition relies upon the ability of the tick to counteract host immune responses induced by the extended feeding periods of ixodid t

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16

Kneeland, Stephen C. "Identification of Fish Hosts for Wild Populations of Rare Freshwater Mussels (Lampsilis cariosa and Leptodea Ochracea) Using a Molecular DNA Key." Fogler Library, University of Maine, 2006. http://www.library.umaine.edu/theses/pdf/KneelandSC2006.pdf.

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17

Soriano, Imelda Rizalina. "Novel inducible phytochemical defences against plant parasitic nematodes /." Title page, table of contents and summary only, 2004. http://web4.library.adelaide.edu.au/theses/09PH/09phs7141.pdf.

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18

Schreiber, Maria Fernanda. "Studying the host transcriptome and the role of flagella in infections mediated by Salmonella and other pathogens." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610270.

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19

Wenzel, Marius. "Genomic, epigenomic and transcriptomic factors affecting host-parasite interactions in red grouse (Lagopus lagopus scotica)." Thesis, University of Aberdeen, 2015. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=227041.

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Host-parasite interactions are extremely important drivers of evolutionary change, characterised by co-evolutionary dynamics with strong reciprocal selective pressure on both host and parasite genomes. However, little is known about the genomic basis of host-parasite interactions, particularly which genes may affect parasite susceptibility, parasite burden and the ability to resolve energetic life-history trade-offs under chronic parasite insult. This thesis examines the genomic, epigenomic and transcriptomic basis of an avian host's physiological response to chronic parasite infection. The mo

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20

Watters, George Murray. "Models of parasitism and hyperparasitism on Paralomis spinosissima /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 1997. http://wwwlib.umi.com/cr/ucsd/fullcit?p9823698.

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21

Williams, Emily Rose-Margaret. "Parasites and the ecological undead: marine snails and their suite of trematodes." Thesis, The University of Sydney, 2012. https://hdl.handle.net/2123/28920.

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The invisible interactions between parasites and their hosts are important elements of the ecology and biology of host populations. Parasites can shape the morphology, distribution, physiology and behaviour of individual hosts - some commonly studied host-parasite interactions often involve gastropods and trematodes. Trematodes can have detrimental effects on their snail hosts, yet many such relationships are relatively unknown. One such relationship is that of the mud whelks, Velacumantus australis, many of which are infected by several species of parasitic trematode. Australian estuaries and

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22

Wyatt, R. J. "Epidemiology, host-parasite relationships and strains of the fish tapeworm Ligula intestinalis." Thesis, University of Exeter, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374700.

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23

Barker, Sarah E. "Host-parasite interactions between Lernaeocera branchialis (Copepoda: Pennellidae) and its host Gadus morhua (Teleosti: Gadidae)." Thesis, University of Stirling, 2009. http://hdl.handle.net/1893/1792.

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Lernaeocera branchialis (Linnaeus, 1767) is a parasitic copepod possessing a complex dual-host lifecycle. The “definitive” gadoid hosts, including Gadus morhua (Atlantic cod), Melanogrammus aeglefinus (haddock) and Merlangius merlangus (whiting), are infected by the fertilised female, which penetrates the host’s ventral aorta or bulbus arteriosus whilst undertaking extensive metamorphosis and a haematophagous lifestyle. The pathogenic effects of this activity upon the host have been well documented and mortality may occur, especially when multiple parasites are present. These negative impacts

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24

Beckmann, Max Johannes. "Saprolegnia infections after vaccination in Scottish salmon aquaculture : a host-pathogen interaction influenced by stress." Thesis, University of Aberdeen, 2016. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=230131.

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25

Fredensborg, Brian Lund, and n/a. "Ecological interactions between the trematode parasite Maritrema novaezealandensis (Microphallidae) and its intermediate hosts in the New Zealand intertidal soft-sediment community." University of Otago. Department of Zoology, 2005. http://adt.otago.ac.nz./public/adt-NZDU20060810.154001.

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Most, if not all, animals will at some stage in their lives encounter parasites. Some of the most widespread and abundant parasites belong to the Class Trematoda. Trematodes often have a substantial negative impact on individual intermediate host ecology. In this thesis, I investigate ecological and evolutionary consequences of the interaction between the microphallid trematode, Maritrema novaezealandensis, and its intermediate snail and crustacean hosts. Parasites often show a heterogeneous spatial distribution pattern in natural animal host populations. In this study, factors determining t

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26

O'Callaghan, Michael George. "Studies on the systematics of the cestodes infecting the emu, Dromaius novaehollandiae (Latham, 1790) /." Title page, table of contents and abstract only, 2004. http://web4.library.adelaide.edu.au/theses/09PH/09pho151.pdf.

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27

Heavyside, Rebecca. "Dietary modulation of the interaction between Salmonid fish and sea lice (Lepeophtheirus salmonis) : effects on host attractiveness, skin mucus and immune response." Thesis, University of Aberdeen, 2017. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=235985.

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28

Bonilla, Victoria. "The Succubus and the Suckers: the Soul-Siphoning Leeches in the Stories of Modernist Text." ScholarWorks@UNO, 2014. http://scholarworks.uno.edu/td/1851.

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This paper explores the various relationships found in John Steinbeck's "Of Mice and Men," Tennessee Williams's "A Streetcar Named Desire," Franz Kafka's "The Metamorphosis," and F. Scott Fitzgerald's "Tender is the Night." The exploration of each demonstrates the common theme of parasitic relations and the toll this dynamic takes on the persons involved.

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29

Farmer, Kristy Lynn Roberts Sharon R. "Study of a novel host-parasite relationship Mycoplasma gallisepticum in house finches (Carpodacus Mexicanus) /." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Summer/Dissertations/FARMER_KRISTY_6.pdf.

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30

Dale, Denver Dudley Stanton. "Parasites and host nutrition." Thesis, University of Oxford, 1993. http://ora.ox.ac.uk/objects/uuid:5bc8aebc-fcfa-4301-8d04-4ebc89fb1c8a.

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31

Gresty, Karen Ann. "The feeding biology of Mytilicola intestinalis Steuer in the mussel host Mytilus edulis L. and other host-parasite relationships." Thesis, University of Exeter, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.279748.

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32

Ortega, Nicole. "Flames and Frogs – The Impact of Environmental Disturbances on Host-Parasite Dynamics." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7640.

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The successful completion of this work is dedicated first to my grandparents for having always shown their unwavering love and encouragement in my journeys (most of which they kindly and politely only pretended to understand) and for having also served as life-long role models who upheld an unparalleled work ethic. To many whom I consider to be my chosen family, especially Ann Williams and Brittany Sears, who kept me laughing, but more importantly, kept my crazy train from derailing during these tumultuous years. To Wayne Price and Tom Jackman, who fostered the success of my career and are t

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33

Cotter, Sheena C. "Trade-offs in insect disease resistance." Thesis, University of Stirling, 2002. http://hdl.handle.net/1893/26688.

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The ability to mount an efficient immune response should be an important life-history trait as parasitism can impact upon an individual's fecundity and survival prospects, and hence its fitness. However, immune function is likely to be costly as resources must be divided between many important traits. Whilst many studies have examined host resistance to particular parasite types, fewer have considered general immune responses. Studies that have considered general immune responses tend to do so in vertebrate models. However, the complexity of the vertebrate immune system makes the examination o

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34

French, Andrew Samuel. "Linking environmental variation across the Scottish Highlands with red deer (Cervus elaphus) trace element status, parasite burden, and skeletal morphometry." Thesis, University of the Highlands and Islands, 2016. https://pure.uhi.ac.uk/portal/en/studentthesis/linking-environmental-variation-across-the-scottish-highlands-with-red-deer-cervus-elaphus-trace-element-status-parasite-burden-and-skeletal-morphometry(b2c569ef-77f4-4fde-9c07-4c8290a9ae88).html.

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35

Kinuthia, Wanja. "The molecular mechanism of immune evasion by the eggs and larvae of the Endoparasitoid Venturia canescens in its host, Ephestia kühniella /." Title page, table of contents and summary only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phk56.pdf.

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36

Poole, Lindsey. "The role of intraflagellar transport in signaling in the African trypanosome Trypanosoma brucei /." Connect to online version, 2008. http://ada.mtholyoke.edu/setr/websrc/pdfs/www/2008/282.pdf.

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37

Berry, Katharine M. "The role of parasites in the invasion ecology of Harmonia axyridis." Thesis, University of Stirling, 2017. http://hdl.handle.net/1893/27336.

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The success of an invasive alien species is often attributed to the ecological advantage gained from natural enemy release. Numerous factors have been suggested as contributing to the success of Harmonia axyridis as an invasive alien species, including enemy release. This thesis studied the interactions of several parasites with H. axyridis, investigating parasite transmission, growth and virulence as well as host immune responses, thereby shedding light on the potential role of enemy release in the invasion biology of this ladybird. Benefits gained by invasive alien species from enemy release

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38

Gordon, David M. "Population dynamics of a host-parasitoid system with particular reference to age-structure effects." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=75358.

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An experimental study of laboratory populations of the stored-products moth, Cadra cautella (Lepidoptera: Phycitidae) and its larval parasitoid, Venturia canescens (Hymenoptera: Ichneumonidae) identified and quantified density- and age-dependent demographic characteristics of the host-parasitoid system. Host imago longevity and fecundity depended on larval weight at pupation. Observed effects of C. cautella larval competition for food on larval mortality, stage duration, and weight at pupation were successfully captured in a mathematical model. Host larval age significantly influenced inter-st

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39

Dugger, Bruce D. "The impact of brood parasitism on host fitness in common pochards and tufted ducks /." free to MU campus, to others for purchase, 1996. http://wwwlib.umi.com/cr/mo/fullcit?p9809678.

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40

Ismaeel, Abdulrahman Yusuf. "Studies on host-parasite relationships of trypanosomatid flagellates in Drosophila, and Leishmania in phlebotomine sandflies." Thesis, University of Liverpool, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240315.

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41

Shariff, Mohamed. "Studies on the biology, host-parasite interactions and distribution of Lernaea spp. in West Malaysia." Thesis, University of Stirling, 1985. http://hdl.handle.net/1893/21892.

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Lernaea spp. was identified as a widespread problem in West Malaysia and various aspects of the parasite were studied. A survey of the distribution of Lernaea spp. in West Malaysia revealed its presence in all the 8 government owned fish breeding stations, 104 privately owned farms and 4 out of 5 consignments of imported fingerlings. The Lernaea spp. present in these ponds were identified as L. piscinae and L. cyprinacea "Asian" form (=b.elegans) and its morpha forms, L. ctenopharyngodonis and L.guadrinucifera. The life cycles of L. cyprinacea and L. piscinae were determined under laboratory c

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42

Prasad, Yugal Kishore. "On the searching efficiency of "Rodolia cardinalis" (Milsant) (Coleoptera, Coccinellidae) and its response to prey patches." Title page, table of contents and summary only, 1985. http://web4.library.adelaide.edu.au/theses/09PH/09php911.pdf.

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43

Lagrue, Clement, and n/a. "Alternative life-history strategies in the trematode Coitocaecum parvum (Opecoelidae) : effects of environmental factors and within-host competition." University of Otago. Department of Zoology, 2008. http://adt.otago.ac.nz./public/adt-NZDU20080905.111744.

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From simple beginnings, when only one host was required, numerous parasitic organisms have evolved complex life-cycles involving two or more host species. For example, trematode parasites reproduce in vertebrates, their definitive host, but their current life cycle also typically involves two intermediate hosts that were added during the course of evolution. Vertebrates are often considered to be the ancestral hosts of trematodes although other scenarios exist. While multi-host life cycles are observed in distantly related groups of parasites, their evolution remains largely unexplored. In t

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44

Heesch, Svenja, and n/a. "Endophytic phaeophyceae from New Zealand." University of Otago. Department of Botany, 2005. http://adt.otago.ac.nz./public/adt-NZDU20060901.141241.

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The aims of this study were to find endophytic brown algae in marine macroalgae from New Zealand, isolate them into culture and identify them using morphological as well as molecular markers, to study the prevalence of pigmented endophytes in a representative host-endophyte relationship, and to reveal the ultrastructure of the interface between the obligate parasite Herpodiscus durvillaeae (LINDAUER) SOUTH and its host Durvillaea antarctica (CHAMISSO) HARRIOT. Three species of pigmented endophytic Phaeophyceae were isolated from New Zealand macrophytes. They were distinguished based on morph

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45

Matthews, Leslie Jeanne. "Synthetic vaccines from peptide libraries : lessons from a model pathogen /." free to MU campus, to others for purchase, 1998. http://wwwlib.umi.com/cr/mo/fullcit?p9924906.

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46

Akbulut, Süleyman. "Effect of Bursaphelenchus xylophilus (Nematod:Aphelenchoididae) fourth stage dispersal of juveniles and log seasonality on life processes of Monochamus carolinensis (Coleoptera:Cerambycidae) /." free to MU campus, to others for purchase, 1998. http://wwwlib.umi.com/cr/mo/fullcit?p9901211.

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47

Kunkel, Brian A. "Plant Fungal Endosymbionts Alter Host-Parasite Relationships Between Generalist Herbivores (Lepidoptera: Noctuidae) and An Entomopathogenic Nematode." The Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=osu1047328087.

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48

Vanwalleghem, Gilles. "Adaptations of Trypanosoma brucei to the innate immunity proteins TNF-gas and ApoL-1." Doctoral thesis, Universite Libre de Bruxelles, 2012. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209725.

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This work allowed the first characterization of the three members of the chloride channel CLC family in T.brucei. The TbCLCs are expressed in the two proliferative stages of the parasite and two of their members appear non-essential. The three TbCLCs act as chloride transporters in X.laevis oocytes and some of their biophysical properties were determined. Furthermore, TbCLC-b appeared to be involved in lysis by the human innate immunity protein apoL-1<p>A novel function of T.brucei adenylate cyclases was discovered in their ability to suppress expression of the innate immunity protein TNF-α. T

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49

Davies, Claire Louise. "Parasite dynamics and community richness in a naturally fragmented water vole (Arvicola amphibious) metapopulation." Thesis, University of Aberdeen, 2014. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=228192.

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Fragmentation can drive local populations to become smaller and more isolated, and consequently more susceptible to extinction. Movement between patches, however, can interconnect such populations so that they effectively behave as larger and more stable metapopulations. Over the past two decades metapopulations have been used to shed light on the complex interactions that occur between hosts and parasites. Effectively every host can be considered as a discrete habitat patch from the perspective of a parasite. As such, host-parasite interactions naturally lend themselves to being examined with

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50

Pfarr, Kenneth M. "Studies of nitric oxide synthase in Brugia malayi and Acanthocheilonema viteae, and identification of gravid-specific transglutaminase substrates in Brugia malayi /." Thesis, Connect to Dissertations & Theses @ Tufts University, 2001.

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Thesis (Ph.D.)--Tufts University, 2001.<br>Adviser: Juliet A. Fuhrman. Submitted to the Dept. of Biology. Includes bibliographical references (leaves 42-54). Access restricted to members of the Tufts University community. Also available via the World Wide Web;

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