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1

Ramos, João Carlos dos Santos. "Avaliação das parasitoses gastrointestinais em bovinos de raça Brava durante a Primavera e Verão." Master's thesis, Universidade Técnica de Lisboa. Faculdade de Medicina Veterinária, 2013. http://hdl.handle.net/10400.5/5872.

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Dissertação de Mestrado Integrado em Medicina Veterinária
Os bovinos são muito afectados pelo parasitismo gastrointestinal, principalmente quando se trata de gado criado em regime extensivo. Sendo os bovinos de raça brava, criados em regime extensivo puro, são também eles acometidos pelas doenças parasitárias, estando estas, entre as principais causas de problemas observados na sanidade destes animais de grande interesse zootécnico, e sendo responsáveis por elevadas perdas económicas, atribuídas a atrasos no desenvolvimento nos animais jovens e a baixos índices de produtividade nos animais adultos. Neste trabalho foram estudadas seis ganadarias de bovinos de raça Brava, duas situadas na região do Ribatejo, três no Alto Alentejo e uma a Sul do Tejo na zona de Setúbal. Todas as explorações apresentavam programas de desparasitação, sendo recolhidas, um total de 62 amostras de fezes para pesquisa e identificação de parasitas gastrointestinais, através de análises coprológicas quantitativas e qualitativas. Nestas explorações, os animais encontravam-se separados e agrupados por idade e sexo, tendo sido o objectivo principal deste trabalho, a avaliação do estado de parasitismo nos vários grupos do efectivo, determinando e comparando, a frequência dos géneros de parasitas envolvidos nas parasitoses. Simultaneamente, foi elaborado inquérito às explorações em estudo. Considerando toda a representatividade das amostras, e tendo como critério, a eliminação de ovos de helmintes por parte dos bovinos, constatou-se que 58% das amostras colhidas foram positivas para parasitas gastrointestinais, sendo que nestas, 47% representavam infecções mistas (com dois ou mais géneros ou espécies), e 53% infecções simples (com um único género ou espécie). Relativamente à prevalência de parasitas, os resultados mostram que os géneros mais prevalentes, foram Trichostrongylus (58% das amostras positivas), seguido de Ostertagia (42%), Moniezia benedeni (19%), Cooperia e Haemonchus (11%), Chabertia (8%) e Nematodirus (3%). Da análise global destes dados, podemos concluir que 58% dos animais estavam infectados, sendo os parasitas mais representativos os nemátodes tricostrongilídeos e com menor expressão os céstodes anoplocefalídeos.
ABSTRACT - Evaluation of gastrointestinal parasitic diseases in Brava breed cattle during Spring and Summer season. - Grazing cattle is often affected by gastrointestinal parasitic diseases. Brava breed cattle, being regarded as such, is also affected by parasitic diseases, which are one of the leading causes for health problems observed in these animal and are responsible for high economic losses due to developmental delays in calves and yearlings, and low productivity rates in adult animals. This study included, six Brava breed livestock farms, two of them, located in the Ribatejo region, three in the Alto Alentejo region and one in the south of Tejo region in the area of Setúbal. All the farms applied prophylactic deworming programs. A total of 62 faecal samples were collected, for research and identification of gastrointestinal parasites, through quantitative and qualitative coprological analysis. In these farms, the animals were managed according to age and sex, being the principal aim of this study, to evaluate the state of parasitism in different groups of livestock, as well as to confirm the effectiveness of the antiparasitic prophylaxis and to determine the frequency of the parasitic genera involved in parasitic diseases. Considering all the representativeness of samples, and taking as a criterion, the shedding of helminth eggs in feces, it was estimated that these eggs occurred in 58% of the samples, and among these, 47% were mixed infections and 53% were pure infections. With regard to the prevalence of gastrointestinal parasites, the results show that the most common genera were, Trichostrongylus (58% positive samples), followed by Ostertagia (42%), Moniezia benedeni (19%), Cooperia and Haemonchus (11%), Chabertia (8%) and Nematodirus (3%). From the global analysis of the data, we can conclude that 58% of the animals were infected, being the trichostrongylid nematodes the most prevalent group of parasites, followed by the anoplocephalid cestodes.
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2

Brailsford, T. J. "The effects of malnutrition upon the host : Parasite relationship of Heligmosomoides polygyrus (nematoda, trichostrongylidae) in mice." Thesis, University of Bristol, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384484.

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3

SOUZA, Wagner Mcklayton Alves de. "Avaliação In vitro do EHA de Lippia sidoides Cham sobre ovos e larvas de nematódeos gastrintestinais da família Trichostrongylidae de caprinos." Universidade Federal Rural de Pernambuco, 2008. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5882.

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In vitro was evaluated the activity ovicidal and larvicidal of the extract dry Hidroalcoólico of alecrim pepper (Lippia sidoides Cham) on the development of eggs and larval of third apprenticeship L3 of nematódeos gastrintestinais (family Trichostrongylidae) of goats. The action ovicidal was accomplished through analysis probabilístic of evolution of the egg in its embryonic phases, it was used 50μL of saturated solution of sugar contends 40 buoyant eggs approximately in the extract with concentration of 1mg/ml, 2mg/ml, 5mg/ml, 10mg/ml, 20mg, 50mg/ml, 100mg/ml, 150mg/ml, 250mg/ml and 500mg/ml, being appraised in the period of time of 1, 3, 6, 12, 24, 48 and 72 hours, water distilled in the negative control and febendazole for 33mg/ml as positive control, all three times in a row. The results demonstrated that the concentration of 500mg/ml presented a probability of 2% of happening evolution of the egg of goat gastrointestinal nematodes. This result went superior to all the other tested groups, andsuperior to the group it controls positive. The activity larvicidal was evaluated through tests of efficiency of the extract Hidroalcoólico on buoyant larval of third stadium L3 in aqueous solution of 50μL and being applied on them the extract of alecrim pepper in the concentrations of 1mg/ml, 2mg/ml, 5mg/ml, 10mg/ml, 20mg, 50mg/ml, 100mg/ml, 150mg/ml, 250mg/ml and 500mg/ml, evaluated to the period time of 24, 48 and 72 hours, water distilled in the negative control and febendazole for 33mg/mL was used as positive control, being twice repeated. After the exhibition period to the extract the larval were counted and separated among alive and dead larval. The results revealed that again the concentration of 500mg/ml really presented result effective with action of 95,89%, that activity went superior again to all the tested groups, getting to overcome in a lot the group controls positive that in function of activity ovicidal already can it is demonstrating resistance anthelminthic. The crossing of the data of the two studies in vitro can reveal a possible activity anthelminthic of the EHA of Lippia sidoide Cham on gastrointestinal nematodes (family Trichostrongylidae).
Avaliou-se in vitro a atividade ovicida e larvicida do EHA de alecrim pimenta (Lippia sidoides Cham) sobre o desenvolvimento de ovos e larvas de terceiro estágio L3 de nematóides gastrintestinais de caprinos (família Trichostrongylidae). A ação ovicida foi realizada através de análise probabilística de evolução do ovo em suas fases embrionária, foi utilizado 50μL de solução saturada de açúcar contendo aproximadamente 40 ovos imersos em diferentes concentrações do EHA (1mg/mL 2mg/mL, 5mg/mL, 10mg/mL, 20mg/mL, 50mg/mL, 100mg/mL, 150mg/mL, 250mg/mL e 500mg/mL), sendo avaliadas no período de tempo de 1, 3, 6, 12, 24, 48 e 72 horas, água destilada no controle negativo e febendazole 33mg/mL como controle positivo, todos em triplicata. Os resultados demonstraram que a concentração de 500mg/ml apresentou uma probabilidade de 2% de ocorrer evolução do ovo de nematóides gastrintestinais de caprinos. Este resultado foi superior a todos os outros grupos testados, e superior ao grupo controle positivo. A atividade larvicida foi avaliada através de testes de eficiência do EHA sobre larvas de terceiro estágio L3 imersas em solução aquosa de 50μL e sendo aplicada sobre elas o extrato de alecrim pimenta nas concentrações de 1mg/mL, 2mg/mL, 5mg/mL, 10mg/mL, 20mg/mL, 50mg/mL, 100mg/mL, 150mg/mL, 250mg/mL e 500mg/mL e avaliadas ao período tempo de 24, 48 e 72 horas, foi utilizado água destilada no controle negativo e febendazole 33mg/ml como controle positivo, sendo repetidos mais duas vezes. Após o período de exposição ao EHA as larvas vivas foram contadas e separadas entre mortas. Os resultados revelaram que novamente a concentração de 500mg/ml apresentou resultado realmente efetivo com ação de 95,89%, essa atividade foi novamente superior a todos os grupos testado, conseguindo superar em muito o grupo controle positivo que em função de atividade ovicida já pode está demonstrando resistência anti helmíntica. O cruzamento dos dados dos dois estudos in vitro sugere significante atividade ovicida e larvicida do EHA de Lippia sidoide Cham sobre nematóideos gastrintestinais de caprinos (família Trichostrongylidae).
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4

Pénicaud, Juliette Jacquiet Philippe. "Comparaison de la réponse anticorps systémique des ovins Barbados black belly et INRA 401 lors d'infestations expérimentales par Haemonchus contortus (Nematoda : Trichostrongylidae)." [S.l.] : [s.n.], 2007. http://oatao.univ-toulouse.fr/1756/1/debouch_1756.pdf.

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5

Hailu, Tolossa Yacob. "Interactions entre Oestrus ovis (Diptera : Oestridae) et Trichostrongylus colubriformis (Nematoda : Trichostrongylidae) chez le mouton : exploration des réactions cellulaires éosinophiliques et mastocytaires lors d'infestations expérimentales." Toulouse, INPT, 2004. http://www.theses.fr/2004INPT010A.

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L'étude des interactions entre Oestrus ovis (Diptera : Oestridae) et Trichostrongylus colubriformis (Nematoda : Trichostronglidae) chez le mouton a montré qu' O. Ovis avait un effet négatif sur l'installation et la reproduction de T. Colubriformis. Le nombre de vers installés, leur fécondité et le nombre d'oeufs éliminés dans les matières fécales sont significativement diminués. En revanche, une infestation préalable par T. Colubriformis n'a pas d'influence sur une infestation ultérieure par O. Ovis. Ces parasites provoquent l'arrivée de nombreux mastocytes, globules leucocytes et éosinophiles dans les muqueuses parasitées. L'observation capitale de ce tarvail est la colonisation à distance par ces cellules des muqueuses respiratoires ou digestives qui ne sont pas le siège du parasite. O. Ovis induit toujours une éosinophilie sanguine et tissulaire qui sont précoces après l'infestation, mais dès l'élimination des larves elles diminuent rapidement.
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Ederli, Nicole Brand. "Caracteriza??o morfol?gica de larvas infectantes de Libyostrongylus douglassii e Libyostrongylus dentatus (Nematoda, Trichostrongylidae) e adultos de Codiostomum struthionis (Nematoda, Strongylidae) parasitas de avestruzes (Struthio camelus)." Universidade Federal Rural do Rio de Janeiro, 2009. https://tede.ufrrj.br/jspui/handle/tede/784.

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Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior
The aim of this work was differentiates infective larvae of Libyostrongylus douglassii, L. dentatus and Codiostomum struthionis allowing the differential diagnosis of those species among fecal cultures. For this, 10 adult ostriches were slaughtered, their proventriculum and caeca ware removed and adult parasites were collected. Females adults of L. douglassii and L. dentatus were separate in five samples of 100 females each. The samples were macerated individually and mixed with sterilized feces and culture fecal was performed to obtaining of infective larvae. Adults parasites of C. struthionis collected in the caeca were washed in saline solution (NaCl 0,09%) and quantified. All the parasites were fixed in A.F.A. for optical microscopy and adults of C. struthionis and infective larvae of Libyostrongylus spp. were fixed in Karnovsky solution for scanning electron microscopy. All proventriculum and 90% of the analyzed caeca were positive to the infection by Libyostrongylus spp. and C. struthionis, respectively. It is possible to distinguish L. douglassii of L. dentatus and C. struthionis by the morphology and length of the larvae sheath tail, that in L. douglassii is short and with acute ending different the other two species that are long and filamentous. For the differential diagnosis between L. dentatus and C. struthionis is more reliable the use of the morphology of the ending of the larvae tail that, in L. dentatus presents a knob in the extremity, this character is not observed in C. struthionis. Like this, this continues being the best parameter for the differentiation among these two species of gastrointestinals nematodes of the ostriches. The differentiation of the infective larvae of L. douglassii, L. dentatus and C. struthionis among fecal cultures will facilitate the diagnosis of this species, by researchers and breeders, favoring the knowledge of the biology of these nematodes.
O presente trabalho tem como objetivo diferenciar larvas infectantes de Libyostrongylus douglassii, L. dentatus e Codiostomum struthionis permitindo o diagn?stico diferencial dessas esp?cies atrav?s de culturas fecais. Para isto, 10 avestruzes adultos foram abatidas, seus proventr?culos e cecos removidos e coletado parasitas adultos. F?meas adultas L. douglassii e L. dentatus foram separadas em cinco amostras de 100 f?meas cada. As amostras foram maceradas individualmente e misturadas com fezes secas esterilizadas e foi realizada cultura fecal padr?o para obten??o de larvas infectantes. Parasitas adultos de C. struthionis recolhidos no ceco foram lavados em solu??o fisiol?gica (NaCl 0,09%), quantificados. Todos os parasitas foram fixados em A.F.A. para microscopia ?ptica e adultos de C. struthionis e larvas infectantes de Libyostrongylus spp. foram fixados em solu??o Karnovsky para microscopia eletr?nica de varredura. Todos os proventr?culos e 90% dos cecos analisados estavam parasitados por Libyostrongylus spp. e C. struthionis, respectivamente. ? poss?vel distinguir L. douglassii de L. dentatus e C. struthionis pela morfologia e comprimento da cauda da bainha que em L. douglassii ? curta e com termina??o aguda ao contr?rio das outras duas esp?cies que s?o longas e filamentosas. Para o diagn?stico diferencial entre L. dentatus e C. struthionis ? mais confi?vel a utiliza??o da morfologia da termina??o da cauda da larva que, em L. dentatus apresenta uma protuber?ncia arredondada na extremidade, caractere este n?o observado em C. struthionis. Assim, este continua sendo o melhor par?metro para a diferencia??o entre estas duas esp?cies de nemat?ides gastrintestinais das avestruzes. A diferencia??o das larvas infectantes de L. douglassii, L. dentatus e C. struthionis atrav?s de culturas fecais ir? facilitar o diagn?stico das esp?cies, por pesquisadores e criadores, favorecendo o conhecimento da biologia destes nemat?ides.
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Audebert, Fabienne. "Les lagomorphes, hôtes" relais" dans l'évolution des Nématodes Trichostrongylina." Paris 12, 1999. http://www.theses.fr/1999PA120051.

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Une hypothese generalement admise, concernant la phylogenie des trichostrongylina suppose que les especes parasites de vertebres anciens ont un cycle a penetration cutanee (type ancylostome) et qu'a l'eocene superieur, les cycles a infestation buccale sont apparus chez les parasites de lagomorphes. Les nombreuses especes parasites, individualisees chez les lagomorphes paraissent toutes et independamment les unes des autres s'etre adaptees aux mangeurs d'herbe, ruminants et rongeurs arvicolides, apparus ulterieurement. Pour etayer ou infirmer ces donnees morphologiques, le travail apporte de nouvelles donnees biologiques et moleculaires. Les cycles de 7 especes ont ete realises dont 4 chez l'hote naturel et 3 chez l'hote experimental : trichostrongylus retortaeformis, graphidium strigosum et nematodiroides zembrae parasites d'oryctolagus cuniculus. Ohbayashinema sp. Parasite d'ochotona daurica chez ochotona r. Rufescens. Trichostrongylus colubriformis, trichostrongylus vitrinus et nematodirus spathiger parasites d'ovis aries chez le lapin. La region its1 de l'adn ribosomique de 9 especes a ete sequencee : trichostrongylus retortaeformis et graphidium strigosum (trichostrongyloidea), nematodirus battus, n. Helvetianus, n. Filicollis, n; spathiger et nematodiroides zembrae (molineoidea), ohbayashinema sp. Et heligmosomoides p. Polygyrus (heligmosomoidea). La duree du cycle soumise surtout a des facteurs ecologiques n'apporte que des donnees approximatives. La morphogenese, au contraire, indique clairement l'individualite des lignees. Les donnees moleculaires sur l'its1 de l'adn ribosomique confirment egalement cette individualite. Selon l'hypothese precedente sur l'evolution des trichostrongylina, basee sur des donnees morphologiques et paleobiogeographiques, les lagomorphes seraient des hotes relais entre les vertebres primitifs et les herbivores stricts. Les nouvelles donnees biologiques et moleculaires, obtenues dans ce travail, paraissent conformes a cette hypothese.
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Zajac, Anne M. "Resistance to trichostrongylid nematode infection in 3 sheep breeds /." The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu148726555543891.

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Braisher, Tamsin Louise. "Genetic variation in trichostrongylid parasites of the Soay sheep of St Kilda." Thesis, University of Cambridge, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.624396.

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Leignel, Vincent. "Diversité génétique et résistance aux benzimidazoles chez ""Teladorsagia circumcincta" (Nematoda, Trichostrongylidea) parasite de petits ruminants." Montpellier 2, 2000. http://www.theses.fr/2000MON20142.

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Mes travaux de these s'inserent dans le cadre general des recherches developpees sur la resistance aux benzimidazoles (bzs) chez teladorsagia circumcincta, trichostrongle parasite de petits ruminants. Dans une premiere partie, une etude sur la diversite genetique a tout d'abord montre que t. Circumcincta est en fait un complexe d'especes qui regroupe au moins deux especes distinctes t. Circumcincta et t. Goat. Elle a aussi mis en evidence chez t. Circumcincta (espece la plus frequente du complexe), une absence de structuration des populations a l'echelle regionale (< 200 km) et une faible structuration a plus large echelle. Compte tenu des caracteristiques des elevages caprins etudies et des parametres demographiques de t. Circumcincta, ce resultat traduit l'existence d'une faible derive genetique qui permet le maintien d'alleles rares (dont les alleles de resistance) dans les populations parasites. Dans une seconde partie, ces travaux se sont interesses a l'influence de differents types de traitement anthelminthiques sur la selection des genotypes resistants et aux consequences de l'acquisition de la resistance aux bzs sur certains traits de vie des parasites. En absence de traitement, la proportion des genotypes reste constante ce qui indique que le succes reproductif des genotypes resistant et sensibles est semblable. La resistance aux bzs augmente proportionnellement avec le nombre de traitements aux bzs. Il est donc tres difficile de combattre la resistance, lorsque les premiers genotypes resistants sont apparus dans la population parasite.
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BEN, SLIMANE BADREDDINE. "Les nematodes trichostrongylina parasites d'amphibiens et de reptiles : problemes taxinomiques, phyletiques et biogeographiques." Paris, EPHE, 1995. http://www.theses.fr/1995EPHE3037.

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L'ensemble des trichostrongylina parasites d'amphibiens et de reptiles comporte 15 genres et 105 especes, (a l'exception de la sous-famille mertensinematinae) qui se repartissent suivant leurs caracteres morphologiques dans des zones biogeographiques bien determinees. Chez ces hotes, le genre oswaldocruzia est le seul groupe qui soit riche en especes et ayant une repartition cosmopolite. Les trichostrongylina parasites d'amphibiens et de reptiles apparaissent donc comme remarquables, d'une part la persistance d'especes extremement anciennes bloquees dans leur evolution et dans leur distribution geographique depuis des millions d'annees, d'autre part dans certaines regions, par l'existence de groupes en pleine explosion evolutive
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Meyer, Anja. "Verbreitung von Benzimidazol-Resistenzen bei den Trichostrongyliden von Schafen und Ziegen in der Schweiz /." Zürich : Zentralstelle der Studentenschaft, 2001. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=009587265&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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Hashmi, Haji Ahmad. "Impact of Arthrobotrys oligospora, a predacious fungus on the epidemiology of ruminant trichostrongylid parasites." Thesis, University of Cambridge, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.305388.

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Seaton, Dale S. "A study of some aspects of the immunoregulation of gastro-intestinal trichostrongylid nematodes in the sheep." Thesis, University of Edinburgh, 1988. http://hdl.handle.net/1842/11905.

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N'ZOBADILA, GABRIEL. "Biologie d'heligmosomoides polygyrus polygyrus (dujardin, 1845) (nematoda, trichostrongylina). Comparaison avec les especes proches et avec sa sous-speciation americaine." Paris, Muséum national d'histoire naturelle, 1994. http://www.theses.fr/1994MNHN0006.

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Heligmosomoides polygyrus polygyrus, nematode parasite du mulot en france a ete introduit aux etats-unis par l'intermediaire de la souris domestique. Il y a effectue une speciation qui, cas exceptionnel en zoologie, peut etre datee de 5 siecles au plus. Le travail cherche a approfondir nos connaissances sur l'espece heligmosomoides polygyrus polygyrus: origine, place dans la faune de france, comparaison des caracteristiques biologiques et genetiques de l'espece et de sa sous-speciation. La faune de france comprend 3 especes essentielles, derivees de l'explosion du genre heligmosomoides chez les arvicolidae d'europe orientale: heligmosomoides lvis chez microtus arvalis, heligmosomoides polygyrus capture tres precocement par les muridae et heligmosomum mixtum chez clethrionomys glareolus. La biologie des 3 especes est comparable, mais a tous les points de vue heligmosomoides laevis est la plus primitive et heligmosomum mixtum la plus evoluee. Cela se manifeste en particulier au niveau des pseudo-kystes, dont la formation est determinee par la migration des l3 dans la paroi intestinale, migration qui semble remplacer la migration pulmonaire des formes primitives a penetration cutanee. Un point tres remarquable est que chez les 3 especes, les larves qui se trouvent dans les pseudo-kystes et celles qui restent dans la lumiere intestinale evoluent de la meme facon et avec la meme vitesse. Les differences ecologiques entre les 3 especes sont plus importantes que les differences biologiques. Chez hs. Laevis, prevalence et intensite restent pratiquement constantes toute l'annee, chez hs. P. Polygyrus, la prevalence reste constante mais l'intensite montre de fortes variations, enfin chez hm. Mixtum, les variations sont marquees aussi bien pour la prevalence que pour l'intensite. Les differences genetiques mises en evidence entre hs. P. Polygyrus et sa sous-espece americaine hs. P. Bakeri, isolee depuis 5 siecles aux etats-unis, apportent des donnees sur l'amplitude des variations genetiques pouvant se produire au cours d'un isolement aussi court. Les caracteristiques biologiques et en particulier la specificite parasitaire sont plus marquees et semble-t-il plus stables que les variations des caracteres morphologiques
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Knapp-Lawitzke, Friederike Marie-Luise [Verfasser]. "Untersuchung möglicher Auswirkungen des Klimawandels auf das Vorkommen und die Anthelminthikaresistenzentwicklung von trichostrongyliden Weideparasiten des Rindes / Friederike Marie-Luise Knapp-Lawitzke." Berlin : Freie Universität Berlin, 2016. http://d-nb.info/1112133321/34.

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Castro, Enzo Emmerich Paula. "Caracterização morfológica de espécies do gênero Oswaldocruzia Travassos, 1917 (Nematoda Molineidae) em anfíbios (Anura) em diferentes regiões do Brasil /." Botucatu, 2018. http://hdl.handle.net/11449/157136.

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Orientador: Reinaldo José Silva
Resumo: O gênero Oswaldocruzia inclui parasitas que habitam o trato gastrointestinal de anfíbios e répteis. A ordem Strongylida é caracterizada por nematoides que possuem bolsa copuladora, e os membros dessa ordem que parasitam anfíbios são quase que exclusivamente restritos ao gênero Oswaldocruzia. São nematoides cosmopolitas, mas pouco se sabe de sua biologia. Em todo o mundo são registradas aproximadamente 90 espécies, sendo 22 espécies descritas para anfíbios na América do Sul e, dentre elas, sete são descritas no Brasil. As espécies que ocorrem no Brasil pertencem ao grupo Continental Neotropical, por possuírem espículos com divisão da forquilha no terço final do comprimento do espículo. As mais importantes características das espécies de Trichostrongylina são a disposição da bolsa copuladora, a morfologia dos sinlofes e a anatomia dos espículos. As espécies pertencentes ao grupo Continental Neotropical possuem características comuns, compondo um grupo homogêneo. Essa homogenia torna difícil o diagnóstico das espécies, que podem ser complexos de espécies, subestimadas nos diferentes tipos de hospedeiros anfíbios e nas diferentes regiões brasileiras, tornando necessária uma análise morfológica mais acurada das estruturas mais importantes. O presente estudo tem por objetivo realizar uma avaliação taxonômica de três espécies de Oswaldocruzia em diferentes regiões do Brasil, com intuito de contribuir para o conhecimento da taxonomia morfológica destes parasitas na região Neotropical... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: The genus Oswaldocruzia includes parasites that inhabit the gastrointestinal tract of amphibians and reptiles. The order Strongylida is characterized by nematodes that possess a caudal bursa, and the members of that order parazitizing amphibians are almost exclusively restricted to the genus Oswladocruzia. They are cosmopolitan nematodes, but little is known about their biology. Approximately 90 species are recorded worldwide, of which 22 are described for amphibians in South America, and seven are described in Brazil. The species distributed in Brazil belong to group Continental Neotropical, because they have spicules with division of the fork in the final third of the length of the spicules. The most important characteristics of the species of Trichostrongylina are the disposition of the caudal bursa, the morphology of the synlophe and the anatomy of the spicules. The species belong to the Continental Neotropical group have common characteristics, composing a homogeneous group. This homogeneity makes it difficult to diagnose species, which may be species complexes, underestimated in the different types of amphibian hosts and in different Brazilian regions, thus it is necessary to make a more accurate morphological analysis of the most important structures of these helminths. The present study aims to carry out a taxonomic evaluation of three species of Oswaldocruzia sp. in different regions of Brazil, aiming at contributing to the knowledge of morphological taxonomy of thes... (Complete abstract click electronic access below)
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HLADKÝ, Jan. "Výskyt střevních parazitů u hovězího dobytka s různým způsobem chovu." Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-154591.

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Abstract:
The aim of this work was to determine prevalence of intestinal parasites in chosen farms and to compare the assessed levels. A total of 250 samples were collected from tree farms (88, 84 and 78). Farm 1 used binding stable of K 96 type without pasture, farm 2 used combibox stable technology and the cows were pastured during non lacting period, in the farm 3, the cows were pastured during their lactation period with approach in loose housing. The work focused on two groups of parasites: genus Eimeria (its overall prevalence was 10 %) and the family Trichostrongylida(13.6 %). In the individual farms, Eimeria reached prevalence of 7.9, 8.3 and 16.7 %, respectively. Trichostrongylids were present in 1.1, 14.3 and 24.4 % of samples in the respective farms. On farm 2, Trichuris and Strongyloides papilosus were also found (each only once). On farm 3, bunostomosis was diagnosed in two cases. The intesities of infections were very low in all cases. The possible correlation of parasitoses and age / performance of animals was assessed with the use of ?2 test, the correlation was however not demonstrated.
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