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Статті в журналах з теми "Madagascar parasite"
Springer, Andrea, and Peter M. Kappeler. "Intestinal parasite communities of six sympatric lemur species at Kirindy Forest, Madagascar." Primate Biology 3, no. 2 (September 7, 2016): 51–63. http://dx.doi.org/10.5194/pb-3-51-2016.
Повний текст джерелаMagaña Vázquez, Regina, Friederike Woog, Anke Dinkel, Ute Mackenstedt, and Sandrine Musa. "Blood Parasites of Vangas and Other Corvoidea on Madagascar." Diversity 14, no. 10 (October 20, 2022): 888. http://dx.doi.org/10.3390/d14100888.
Повний текст джерелаDepaquit, J., N. Léger, H. Ferté, and V. Robert. "Les Phlébotomes de Madagascar (Diptera : Psychodidae)." Parasite 11, no. 2 (June 2004): 201–9. http://dx.doi.org/10.1051/parasite/2004112201.
Повний текст джерелаVerneau, Olivier, Louis H. Du Preez, Véronique Laurent, Liliane Raharivololoniaina, Frank Glaw, and Miguel Vences. "The double odyssey of Madagascan polystome flatworms leads to new insights on the origins of their amphibian hosts." Proceedings of the Royal Society B: Biological Sciences 276, no. 1662 (January 20, 2009): 1575–83. http://dx.doi.org/10.1098/rspb.2008.1530.
Повний текст джерелаDar, Y., P. Vignoles, D. Rondelaud, and G. Dreyfuss. "Fasciola gigantica: larval productivity of three different miracidial isolates in the snail Lymnaea truncatula." Journal of Helminthology 77, no. 1 (March 2003): 11–14. http://dx.doi.org/10.1079/joh2002145.
Повний текст джерелаAndriantsoanirina, Valérie, Arsène Ratsimbasoa, Christiane Bouchier, Martial Jahevitra, Stéphane Rabearimanana, Rogelin Radrianjafy, Voahangy Andrianaranjaka, et al. "Plasmodium falciparum Drug Resistance in Madagascar: Facing the Spread of Unusual pfdhfr and pfmdr-1 Haplotypes and the Decrease of Dihydroartemisinin Susceptibility." Antimicrobial Agents and Chemotherapy 53, no. 11 (August 24, 2009): 4588–97. http://dx.doi.org/10.1128/aac.00610-09.
Повний текст джерелаDuchemin, J. B., and J. Ratovonjato. "Description de trois nouvelles especes deParactenopsyllus(Siphonaptera : Leptopsyllinae) de Madagascar." Parasite 11, no. 3 (September 2004): 253–60. http://dx.doi.org/10.1051/parasite/2004113253.
Повний текст джерелаTantely, Michaël Luciano, Gilbert Le Goff, Sébastien Boyer, and Didier Fontenille. "An updated checklist of mosquito species (Diptera: Culicidae) from Madagascar." Parasite 23 (2016): 20. http://dx.doi.org/10.1051/parasite/2016018.
Повний текст джерелаMontero, B. Karina, Wasimuddin, Nina Schwensow, Mark A. F. Gillingham, Yedidya R. Ratovonamana, S. Jacques Rakotondranary, Victor Corman, Christian Drosten, Jörg U. Ganzhorn, and Simone Sommer. "Evidence of MHC class I and II influencing viral and helminth infection via the microbiome in a non-human primate." PLOS Pathogens 17, no. 11 (November 8, 2021): e1009675. http://dx.doi.org/10.1371/journal.ppat.1009675.
Повний текст джерелаDepaquit, J., N. Léger, and V. Robert. "Les Phlébotomes de Madagascar (Diptera : Psychodidae) III - Description dePhlebotomus(Anaphlebotomus)fontenilleiN. SP." Parasite 11, no. 3 (September 2004): 261–65. http://dx.doi.org/10.1051/parasite/2004113261.
Повний текст джерелаДисертації з теми "Madagascar parasite"
Charbonnel, Nathalie. "De la génétique à la dynamique des populations : l'exemple du gastéropode des eaux douces, Biomphalaria pfeifferi à Madagascar." Montpellier, ENSA, 2001. http://www.theses.fr/2001ENSA0018.
Повний текст джерелаBerthier, Pauline. "Conservation animale : utilisation des parasites comme marqueurs de l’écologie évolutive des amphibiens." Perpignan, 2011. http://www.theses.fr/2011PERP1090.
Повний текст джерелаIn the very current context of biodiversity, conservation stakeholders will need to gather as much information on the biology and ecology of endangered species. Unfortunately, those data being not always available, even from extensive studies on the species of interest, the objectives of the managers of natural areas are all the more difficult to achieve. As part of this thesis, we focused on a poorly studied group of organisms in the context of conservation, namely parasites. Indeed, because hosts and parasites are often old enemies who have co-evolved over long time periods, the parasites can save a great deal of information on their hosts that, when decoded, can be used for the development of best suited management plans. The association polystomes (Monogenea) - anuran amphibians, particularly couples Madapolystoma - Mantellidae and Metapolystoma - Ptychadenidae / Mantellidae, have been studied to explore Madagascar, biodiversity hotspot threatened by habitat destruction, environmental history and scalable guest endemic. From morphometric and molecular approaches, a variety of unsuspected polystomes could be detected, which was the subject of two new descriptions, Madapolystoma ramilijaonae and M. Cryptica. These results placed in a context of systematic hosts suggest the existence of complexes of cryptic species in two species of Malagasy amphibians, namely Guibemantis liber and Ptychadena mascareniensis. Through phylogenetic approaches and molecular dating, settlement patterns were also identified, suggesting different origins of the Malagasy polystomes. In conclusion of this work, the information conveyed by polystomes could afford, now, to act on certain species of amphibians. Indeed, the description of complexes of cryptic species tends to increase the already very high, microendemic species. Thus, because the ranges of taxonomic entities are much smaller than previously estimated, it is necessary to quickly rethink the areas to be protected
Kiene, Frederik [Verfasser], Ute [Akademischer Betreuer] Radespiel, Christina [Gutachter] Strube, Nicole [Gutachter] Kemper, and Oliver [Gutachter] Schülke. "Effects of habitat fragmentation on parasite infections in mouse lemurs (Microcebus spp.) and small mammals in northwestern Madagascar / Frederik Kiene ; Gutachter: Christina Strube, Nicole Kemper, Oliver Schülke ; Betreuer: Ute Radespiel." Hannover : Stiftung Tierärztliche Hochschule Hannover, 2021. http://d-nb.info/1237684633/34.
Повний текст джерелаLhermitte-Vallarino, Nathaly. "Co-évolution des Nématodes parasites et de leurs hôtes Caméléons ? : exemple des Rhabdias pulmonaires (Rhabdiasidae)." Paris, Muséum national d'histoire naturelle, 2009. http://www.theses.fr/2009MNHN0042.
Повний текст джерелаRhabdias (Rhabdiasidae) are a primitive parasitic group of nematodes (clade IV) characterized with the persistency of a free-living adult heterogonic phase which produces infective larvae. In the host, these larvae develop into female morphotypes which reach lungs and lay first stage larvae, eventually expulsed in faeces. The host-range is limited to coldblooded terrestrial vertebrates, Lissamphibia and a few groups of Ophidia and Sauria (Squamata) ; the distribution area comprises tropical and temperate regions. The study focusses on the Rhabdias from Chamaeleonidae, with two main questions: 1. How important is the specific diversity? 2. Did the present species derive from a unique historical acquisition of Rhabdias in the monophyletic group of Chamaeleonidae and an evolution inside this host family? Material and methods. Material were recovered during missions, or sized by customs or taken from the MNHN collections. They originated mainly from "hot-spots" of biodiversity: the Vulcanic Chain of Cameroon (Project ANR Biodiversity: Iles Forestières Africaines), Burundi, Tanzania and Madagascar ; material from Senegal and Togo were also examined. Morphological and biological (coprocultures for obtaining the free-living phases ; examination of the ovary and oviduct of parasitic females to determien the mode of reproduction) were performed, as well as molecular analyses (sequencing of coxI, 12S rDNA and 28S rDNA genes). Results. 1. In 2004, for more than 150 species of Chamaeleonidae, two species of Rhabdias were reported, in 1916 and 1961 respectively : R. Chamaeleonis from east Africa and R. Gemellipara from Madagascar. At this date, twelve more species have been described, five in east Africa, three in Cameroon, and five in Madagascar. It is shown that one species is parthenognetic whereas in the others, a particular area in the ovaries, 250- 1200 μm from apex, produces spermatozoa during the adult phase, intermittently and not synchroneously in both ovaries. Rhabdias are found in Trioceros, the leaf chameleons Rhampholeon and Rieppeleon, from equatorial Africa, in Calumma and the primitive Brookesia from Madagascar. Rhabdias is not known in Chamaeleo spp. , which live in less humid regions, not propicious to infective larvae survival. Morphological diagnostic characters appear numerous, head papillae, mouth, buccal capsule (its size varies very little during adult growth), oesophagus, cuticular body vesicle, etc. The molecular analyses, made with four African and one Malagasy species confirm the morphological identifications. It is noted that (i) a given Rhabdias species may infect two sympatric species of chameleons; (ii) a specimen host may shelter two Rhabdias species; (iii) two pairs of vicariant species are suggested between Burundi and Cameroun, one preforating the lung wall; (iv) a case of cryptic species is discussed. 2. A key of identification of Rhabdias from Chamaeleonidae is presented. 3. Three species from Bufonidae and Arthroleptidae are described in Africa, and one from Mantellidae in Madagascar, elevating to five the number of species presently known from anurans in Ethiopian region. These species are distinct from those parasitic in chameleons with the small diameter of the mouth and buccal capsule, and also by the infective larva: their caudal extremity is pointed and simple (plesiomorphic character) whereas it is rounded and ornated with buds in the Chamaeleonidae (derived character). 4. A cladistic analysis is made which includes 15 Rhabdias species from ophidians, anourans and Chamaeleonidae and three rhabdiasid genera, Pneumonema, Chabirenia and Entomelas, with a Strongyloides species as out-group; the Rhabdias from Chamaeleonidae are grouped. The molecular analyses give more complex results, with one or two species from Chamaeleonidae situated among the parasites from anurans
Savage, Amy Frances. "Identity and prevalence of blood parasites in wild-caught birds from Madagascar." [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0001121.
Повний текст джерелаGomard, Yann. "Relations hôtes – parasites zoonotiques : diversité, aspects évolutifs et implications épidémiologiques. Le cas de la leptospirose dans les îles du sud-ouest de l’océan Indien." Thesis, La Réunion, 2015. http://www.theses.fr/2015LARE0029/document.
Повний текст джерелаLeptospirosis is considered as the most widespread zoonosis worldwide but the incidence levels are higher in tropical regions and particularly on islands. The South-Western Indian Ocean islands are no exception and the disease is of major medical concern in several islands notably in Seychelles, displaying some of the highest human incidence ever reported. Based on available data, the human epidemiology appears contrasted in the region: on Mayotte, human cases result from the infection with four distinct Leptospira species whereas on Reunion Island or Seychelles, a single species causes the majority of clinical cases. The main objective of this thesis is to identify some of the drivers of this singular epidemiology. We first completed the information available on this human disease in the region by investigating the leptospirosis situation in the Union of the Comoros, a country where no autochthonous transmission has been reported so far. Our results indicate that Comorian populations are exposed to Leptospira, which are antigenically comparable to those detected in the neighbouring island of Mayotte. This finding suggests that the apparent absence of leptospirosis in some islands rather reflects a lack of surveillance. We then investigated the genetic diversity of Leptospira on distinct islands home to distinct endemic animal species that may shed distinct Leptospira lineages and thus at least in part explain the contrasted epidemiology of leptospirosis in the region. Specifically, we describe a high diversity of pathogenic Leptospira within Malagasy bats (Chiroptera) and further show that Leptospira diversity is not structured by geography. Instead, we show that these Leptospira display a strong specificity towards their hosts, which may result from different evolutionary processes including co-speciation and host switching. Using this tight host specificity, we investigated the leptospirosis epidemiology on Mayotte, where we show that the important bacterial diversity reported in clinical cases is due of the presence of several distinct animal species acting as reservoirs, some of which introduced from the neighbouring Madagascar. Altogether, results presented herein combined to data produced by our lab suggest that the epidemiology of leptospirosis in the SWOI results from distinct assemblages of cosmopolitan and autochthonous/endemic Leptospira. Keywords : Leptospirosis, Leptospira, Chiroptera, small mammals, hosts-parasites associations, MAT, MLST, co-phylogeny, Madagascar, Mayotte, Union of Comoros, South-Western Indian Ocean
Rakotofiringa, Sylvère Lalao. "Les Monogènes parasites des poissons continentaux et marins de Madagascar taxonomie, spécificité et affinités /." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37600599n.
Повний текст джерелаPorphyre, Vincent. "Comment concilier le développement des systèmes d'élevage porcin et l'amélioration de la qualité des produits animaux : modélisation multi-agents appliquée au secteur de l'élevage porcin à Madagascar pour la conception et l'évaluation de scénarii de lutte contre la cysticercose." Thesis, La Réunion, 2019. http://www.theses.fr/2019LARE0025.
Повний текст джерелаPorcine cysticercosis, a neglected tropical parasitic disease due to Taenia solium, with a cycle involving humans and pigs, is responsible for 50,000 deaths each year, mainly in the developing countries. Our PhD work has tried to explore the epidemiological situation of this disease in the swine population of Madagascar and to understand the determinants explaining its prevalence in the epidemiological and economic context of the country. As a first step, abattoir surveys estimated an apparent prevalence of 4.6% [4.2-5.0%] at the national level and a corrected prevalence of 21.03% [19.18-22.87%] taking into account the sensitivity of the method (veterinary inspection by macroscopic observation). In a second step, we modeled the environment-animal-human link in the context of Malagasy highlands where pig farming is semi-intensified but porcine cysticercosis remains endemic. Our multi-agent model, developed under Cormas, allowed us to model the simplified behaviors of human and animal actors as well as health and environmental processes. A multivariate sensitivity analysis helped us better understand the model's responses to the input parameters used. It was sensitive primarily to parameters describing (i) the exposure of animals to food contaminated with T. solium eggs, including the distribution of non-farmer-controlled feed and access to contaminated environment, and (ii) the infectious capacity of T. solium eggs, their excretion and survival in the environment. This exploratory approach allowed us to identify the important parameters, highlighting the research needs to be carried out to reinforce the likelihood of the model results and help us to test the impact of the control scenarios against cysticercosis in pig production areas characteristic of the country's situation
Bafalimanana, Halitiana Josea. "Evaluation des effets d'insecticides sur deux types d'Hyménoptères auxiliaires des cultures, l'abeille domestique (Apis mellifera L. ) et des parasitoi͏̈des de pucerons : études de terrain à Madagascar et de laboratoire en France." Paris, Institut national d'agronomie de Paris Grignon, 2003. http://www.theses.fr/2003INAP0001.
Повний текст джерелаHoneybees and aphid parasitoids may suffer from side effects of insecticides during their beneficial activity. Our objective was the risk assessment of pesticides towards these non target insects in the field and a contribution to the setting up of lethal and sublethal toxicity tests in the laboratory. In Madagascar, we conducted an investigation to define the impact of crop protection farmers' practices on honeybees, and we conducted an experimentation to estimate the effects of a treatment on aphid parasitoids. In France, we determined the acute toxicity of deltamethrin, lambda cyhalothrin, chlorpyrifos ethyl and pirimicarb, on the honeybee and on an aphid parasitoid, Aphidius ervi. We analyzed some parameters responsible for the variability of lethal dose 50 (LD50) values. We also investigated the effects of the insecticides on orientation responses of the honeybee and A. Ervi, using a common behavioral test, the four-armed olfactometer. In Madagascar, insecticide treatment can occur during blooming and the farmers have observed negative effects on honeybee colonies. With regard to Hymenopterous parasitoids, we found out that the insecticide treatment contributes to delay their action in experimental cabbage field plots. In laboratory conditions, the toxicity varies according to the exposure route and to the active ingredient. The honeybee oral toxicity differed between collective and individual administration. The role of trophallactic interactions in the distribution of the active ingredient was evaluated. Thus, value of LD50 expressed in ng/bees varies according to the experimental conditions. The honeybees and A. Ervi surviving the insecticide treatments showed no or little effect in their attraction responses in the four-armed olfactometer. On the other hand, in honeybees, LD20 and LD50 of deltamethrin decreased their capability to move. These perturbations might have an important effect on beneficials insects in an environment contaminated by pesticides
Rafalimanana, Halitiana Joséa. "Evaluation des effets d'insecticides sur deux types d'Hyménoptères auxilliaires des cultures, l'abeille domestique (Apis mellifera L.) et des parasitoïdes de pucerons : études de terrain à Madagascar et de laboratoire en France." Phd thesis, INAPG (AgroParisTech), 2003. http://tel.archives-ouvertes.fr/tel-00005703.
Повний текст джерелаA Madagascar, nous avons mené une enquête pour déterminer l'impact de pratiques paysannes en matière de protection de cultures d'agrumes sur les abeilles, et une expérimentation en parcelle de choux pour évaluer les effets de traitements insecticides sur les Hyménoptères parasites de pucerons. En France, nous avons déterminé en laboratoire les toxicités aiguës de la deltaméthrine, de la lambda cyhalothrine, du chlorpyriphos éthyle et du pyrimicarbe, pour les abeilles et le parasitoïde de pucerons, Aphidius ervi. Nous avons analysé, chez l'abeille, certaines causes de variabilité des doses létales à 50%. Nous avons également déterminé les effets d'insecticides sur le comportement d'orientation olfactive en olfactomètre chez l'abeille et A. ervi.
A Madagascar, le traitement pendant la floraison existe et les apiculteurs constatent des effets négatifs sur leurs ruches. L'expérimentation en parcelle de chou montre que le traitement insecticide contribue à retarder l'action des Hyménoptères parasites de pucerons.
En laboratoire, la toxicité varie en fonction du mode de pénétration et de la nature des matières actives. Chez l'abeille, les toxicités par ingestion collective et individuelle ne sont pas toujours comparables. L'importance du phénomène de trophallaxie dans cette différence a été précisée. Ainsi, la valeur de DL50 exprimée en ng/abeille dépend des conditions expérimentales. Les abeilles et A. ervi ayant survécu aux traitements insecticides et testés en olfactomètre, ne montrent pas ou peu de changement de comportement d'orientation vis-à-vis de l'odeur utilisée. Par contre, les abeilles recevant des DL20 et DL50 de deltaméthrine ont une capacité locomotrice réduite. Cette perturbation pourrait avoir des effets non négligeables sur les insectes auxiliaires dans un environnement pollué par les insecticides
Частини книг з теми "Madagascar parasite"
Waltisperger, Dominique, and France Meslé. "Economic Crisis and Changes in Mortality Due to Infectious and Parasitic Diseases in Antananarivo, Madagascar." In HIV, Resurgent Infections and Population Change in Africa, 79–99. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-6174-5_5.
Повний текст джерелаRabefiraisana, Harimialimalala Jhonny, Abdelbagi Mukhtar Ali Ghanim, Alice Andrianjaka, Berthe Rasoamampionona, Ljupcho Jankuloski, Mbolatiana Alinà Razafindrasoa, Ratsimiala Ramonta Isabelle, Ivan Ingelbrecht, Nirina Hanitriniaina Ravelonjanahary, and Noronirina Victorine Rakotoarisoa. "Impact of mulch-based cropping systems using green mulch and residues on the performance of advanced mutant lines of maize (Zea mays (L.)) under infested field with the parasitic weed Striga asiatica (L.) Kuntze in Madagascar." In Mutation breeding, genetic diversity and crop adaptation to climate change, 235–42. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789249095.0024.
Повний текст джерелаBletz, M., A. Crottini, C. Weldon, M. Vences, F. C. E. Rabemananjara, M. Fisher, and L. Du Preez. "AMPHIBIAN DISEASES AND PARASITES." In The New Natural History of Madagascar, 1342–49. Princeton University Press, 2022. http://dx.doi.org/10.2307/j.ctv2ks6tbb.183.
Повний текст джерелаRamasindrazana, B., M. Rasoanoro, H. C. Ranaivoson, M. Randrianarivelojosia, P. Tortosa, and S. M. Goodman. "BLOOD PARASITES OF SMALL MAMMALS ON MADAGASCAR." In The New Natural History of Madagascar, 294–97. Princeton University Press, 2022. http://dx.doi.org/10.2307/j.ctv2ks6tbb.43.
Повний текст джерела