Academic literature on the topic 'Parasitology'
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Journal articles on the topic "Parasitology"
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McVeigh, Paul. "Post-genomic progress in helminth parasitology." Parasitology 147, no. 8 (April 7, 2020): 835–40. http://dx.doi.org/10.1017/s0031182020000591.
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AbstractHelminth parasitology is an important discipline, which poses often unique technical challenges. One challenge is that helminth parasites, particularly those in humans, are often difficult to obtain alive and in sufficient quantities for study; another is the challenge of studying these organisms in vitro – no helminth parasite life cycle has been fully recapitulated outside of a host. Arguably, the key issue retarding progress in helminth parasitology has been a lack of experimental tools and resources, certainly relative to the riches that have driven many parasitologists to adopt free-living model organisms as surrogate systems. In response to these needs, the past 10–12 years have seen the beginnings of helminth parasitology's journey into the ‘omics’ era, with the release of abundant sequencing resources, and the functional genomics tools with which to test biological hypotheses. To reflect this progress, the 2019 Autumn Symposium of the British Society for Parasitology was held in Queen's University Belfast on the topic of ‘post-genomic progress in helminth parasitology’. This issue presents examples of the current state of play in the field, while this editorial summarizes how genomic datasets and functional genomic tools have stimulated impressive recent progress in our understanding of parasite biology.
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Vázquez, José. "Parasitology." American Biology Teacher 66, no. 5 (May 1, 2004): 386. http://dx.doi.org/10.2307/4451696.
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Lindberg, R., J. Monrad, M. V. Johansen, N. Ö. Christensen, and P. Nansen. "Parasitology." Research in Veterinary Science 58, no. 1 (January 1995): 56–60. http://dx.doi.org/10.1016/0034-5288(95)90089-6.
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Garcia, Lynne S. "Parasitology." Reviews in Medical Microbiology 10, no. 1 (January 1999): 51–64. http://dx.doi.org/10.1097/00013542-199901000-00006.
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Seed, John Richard. "Modern Parasitology: A Text of Parasitology." American Journal of Tropical Medicine and Hygiene 51, no. 5 (November 1, 1994): 708. http://dx.doi.org/10.4269/ajtmh.1994.51.708.
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Ostfeld, Richard S., and Felicia Keesing. "Parasitology Is Dead. Long Live Parasitology!" Conservation Biology 24, no. 6 (November 11, 2010): 1690–91. http://dx.doi.org/10.1111/j.1523-1739.2010.01594.x.
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Moore, Janice. "Demythologizing Parasitology." Ecology 74, no. 6 (September 1993): 1909–10. http://dx.doi.org/10.2307/1939954.
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Kanungo, Reba. "MEDICAL PARASITOLOGY." Indian Journal of Medical Microbiology 26, no. 1 (January 2008): 99. http://dx.doi.org/10.1016/s0255-0857(21)02015-6.
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Dick, Terry A., and Thomas C. Cheng. "General Parasitology." Journal of Parasitology 73, no. 1 (February 1987): 251. http://dx.doi.org/10.2307/3282386.
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Podesta, Ron, and J. Thomas August. "Molecular Parasitology." Journal of Parasitology 73, no. 1 (February 1987): 254. http://dx.doi.org/10.2307/3282389.
Full textDissertations / Theses on the topic "Parasitology"
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Gracenea, Zugarramurdi Mercedes. "Contribución al conocimiento de determinados aspectos de la bionomia de Brachylaima ruminae Mas-Coma et Montoliu 1985 (Trematoda: Brachylaimidae)." Doctoral thesis, Universitat de Barcelona, 1986. http://hdl.handle.net/10803/673000.
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Los estudios que sobre ciclos biológicos de Tremátodos Digénidos de la familia Brachylaimidae Joyeux et Foley, 1930 se lleva a cabo desde hace ya años en el Departamento de Parasitología de la Facultad de Farmacia de la Universidad de Barcelona nos condujeron, en su día, al inicio del presente trabajo destinado a prestar una pequeña contribución al conocimiento de la bionomía de una especie concreta de Trematodo perteneciente a la familia anteriormente citada: Brachylaima ruminae Mas-Coma et Montoliu, 1985. El ciclo evolutivo de esta especie de Digénido ha sido dilucidado totalmente por MAS-COMA & MONTOLIU (1978 a, b) y MONTOLIU (1984) tanto en la Naturaleza como experimentalmente en el Laboratorio de nuestro Departamento. La complejidad de este ciclo triheteroxeno terrestre nos situó ante un amplio y atractivo abanico de posibilidades de estudio e investigación, dado que cada uno de los aspectos del ciclo es merecedor en sí mismo de un estudio en profundidad.
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Pardini, Alessandra Xavier. "Utilização de preparações antigênicas de cisticercos de Taenia crassiceps para pesquisa de anticorpos na neurocisticercose (Taenia solium)." Universidade de São Paulo, 2000. http://www.teses.usp.br/teses/disponiveis/9/9136/tde-27012015-130517/.
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O complexo teníase-cisticercose humana representa importante problema sócio-econômico e de Saúde Pública em países em desenvolvimento, incluindo nosso país. A forma mais grave da doença decorre da localização de cisticercos no Sistema Nervoso Central, a neurocisticercose. Devido à dificuldade de obtenção de parasitas a partir de suínos naturalmente infectados estudamos como fonte alternativa, preparações antigênicas de cisticercos de Taenia crassiceps (antígeno heterólogo), para pesquisa de anticorpos anti-cisticercos em líquido cefalorraquiano (LCR) de pacientes com neurocisticercose. Foram estudados os extratos antigênicos de líquido vesicular de cisticercos de Taenia crassiceps (LV-Tcra) e as frações purificadas por Concanavalina A (ConA-Tcra) obtida por coluna de afinidade com lectina e glicoprotéico fracionado (GP-Tcra) obtida a partir do antígeno LV-Tcra em eletroforese preparativa. Os antígenos LV-Tcra, ConA-Tcra e GP-Tcra para a detecção de anticorpos IgG anti-T. solium, foram ensaiados por ELISA em amostras de LCR e por imunoblot em amostras de LCR e soro. Foi utilizado também, kit comercial ELISA com antígeno de T. solium. A sensibilidade e a especificidade obtidas para os antígenos LV-Tcra, ConA-Tcra e GP-Tcra no teste ELISA foram de 100%, com boa reprodutibilidade. Os peptídeos em ordem de freqüência de reatividade para o antígeno LV-Tcra foram: 14-11kD (100%), 62kD (100%), 68kD (100%), 91kD (76%), 25kD (70%), 46KD (64%), 18kD (58%), 43kD (23%), 9-8kD (17%), 56kD (11%) e 32kD (11%). Para o antígeno ConA-Tcra foram identificados os peptídeos, por ordem de freqüência, 14kD (100%), 28kD (66%), 18kD (55%), 46kD (44%), 43kD (22%), 94kD (22%), 103kD (22%). Para o antígeno GP-Tcra, foram identificados somente os peptídeos de 14 - 18kD. Amostras de LCR de pacientes com esquistossomose não apresentaram reatividade com os extratos antigênicos e uma amostra de LCR de paciente com neurossífilis, apresentou forte reatividade eom os peptfdeos de baixo peso molecular≤20kD, para os três antígenos, inclusive no teste ELISA comercial com antígeno de T. solium. Os resultados confirmam que os antígenos de T. crassiceps são importantes fontes alternativas de extratos antigênieos. As frações glicoprotéicas mostraram-se eficientes na detecção de anticorpos anti-T. solium em amostras de LCR e soro de pacientes com neurocisticercose.The human taeniasis-cysticercosis complex represents an important socioeconomic and Public Health problem in developing countries, including Brazil. The most severe form of the disease is due to the localization of cysticerci in the Central Nervous System, i.e. neurocysticercosis. Due to the difficulty in obtaining parasites from naturally infected swine, we studied an alternative source consisting of Taenia crassiceps cysticerci (heterologous antigen) for the search of anti-cysticercus antibodies in cerebrospinal fluid (CSF) from patients with neurocysticercosis. We studied the antigenic extracts of vesicular fluid of Taenia crassiceps cysticerci (VF-Tcra) and the purified fractions Concanavalin A (ConA-Tcra) obtained from an affinity column with lectin and fractionated glycoprotein (GP-Tcra) obtained from the VF-Tcra antigen by preparative electrophoresis. The VF-Tcra, ConA-Tcra and GP-Tcra antigens for the detection of IgG antibodies were assayed by ELISA in CSF samples and by immunoblot in CSF and serum samples. A commercial ELISA kit with T. solium antigen was also used. The sensitivity and specificity obtained for the VF-Tcra, ConA-Tcra and GP-Tcra were 100% in the ELISA test, with good reproducibility. The peptides in order of frequency of reactivity with the VF-Tcra antigen were: 14-11kD (100%), 62kD (100%), 68kD (100%), 91kD (76%), 25kD (70%), 46KD (64%), 18kD (58%), 43kD (23%), 9-8kD (17%), 56kD (11%), and 32kD (11%). The following peptides, in order of frequency were identified for the ConA-Tcra antigen: 14kD (100%), 28kD (66%), 18kD (55%), 46kD (44%), 43kD (22%), 94kD (22%), and 103kD (22%). Only peptides of 14-18kD were identified for the GP-Tcra antigen. CSF samples from patients with schistosomiasis did not show reactivity with the antigenic extracts and a CSF sample from a patient with neurosyphilis presented strong reactivity with low molecular weight (≤20kD) peptides for the three antigens also in the commercial ELISA with the T. solium antigen. The results confirm that T. crassicepsantigens are important alternative sources of antigenic extracts. The glycoprotein fractions proved to be efficient in detecting anti-T solium antibodies in CSF and serum samples trom patients with neurocysticercosis.
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Hofstatter, Bianca Delgado Menezes. "Avaliação de diferentes extratos enzimáticos fúngicos sobre ovos de Ancylostoma spp." Universidade Federal de Pelotas, 2013. http://repositorio.ufpel.edu.br/handle/ri/2323.
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Previous issue date: 2013-02-28The role of companion animals or pets as zoonotic disease reservoirs has been recognized as a significant public health hazard throughout the world. Ancylostoma caninum and A. braziliense are zoonotic parasites which are transmitted to man through contact with soil contaminated with both eggs and larvae of these ancylostomids. The considerable prevalence of environmental contamination by Ancylostoma spp eggs, together with the difficulties of applying control measures and soil disinfection, as well as the development of resistance to anthelmintic therapy, highlights the need for alternative methods to help control these helminths. Taking into account that these nematodes spend part of their life cycle in the soil and that nematophagous fungi usually found in this ecosystem establish parasitic or predatory relationships with these parasites, thus playing an important role as natural enemies, the use of these agents in the effective control of nematodes is viable and desirable. Thus, nematophageous fungi can be used when the environment is already contaminated. This study aimed to determine helminth prevalence in dog feces collected on streets and parks in Pelotas County, Rio Grande do Sul State, Brazil, as well as to evaluate the in vitro ovicidal activity of different crude enzymatic extract preparations of CG193 and MICLAB 009 Paecilomyces lilacinus, MICLAB 008 Trichoderma virens and CG502 Trichoderma harzianum fungal isolates on Ancylostoma spp. eggs. Fifteen random feces samples were collected from 14 different places in town between January and March 2012, totaling 210 samples, which were submitted to coproparasitological tests. The fungal isolates evaluated were grown in minimum liquid medium under agitation at 28ºC for five days. Fungal preparations consisted of supernatant liquid medium without filtration (crude extract), filtered (filtered extract), macerated mycelium (crude macerate), and macerated mycelium submitted to filtration (filtered macerate). Ancylostoma spp. eggs were obtained from the feces of naturally parasitized dogs. In vitro assays consisted of four treatments and one control group. 4mL of each fungal extract was poured into Petri dishes added with a 1 mL suspension containing approximately 103 Ancylostoma spp. eggs. The control group consisted of 1mL suspension containing 1000 Ancylostoma spp. eggs added with 4mL sterile distilled water. All dishes were incubated at 25º C for 24 hours. Each assay had five replicates. Following, the total number of larvae present in each treatment and in the control group was counted. The results obtained showed that the overall prevalence of environmental contamination on public streets and parks was 57,6%, including both mono (67,8%) and multi (32,2%) infections. Ancylostoma spp. was the most frequent occurrence (88,4%), followed by Trichuris vulpis. (38,8%). When evaluating the in vitro ovicidal activity, the different fungal formulations tested for each fungus were found to differ (p<0,05) from the control group, showing a relevant ovicidal effect. When the egg hatching reduction percentage was calculated, the highest reduction occurred when the crude macerate preparation was used, showing 68,43% and 47,05% MICLAB 009 and CG193 P. lilacinus and 56,43% T. harzianum reduction percentages, respectively. The crude macerate reduction percentage for the T. virens isolate (52,25%) was slightly lower than that for the filtered macerate (53,64%). The finding that 88,4% of the feces were positive for Ancylostoma spp. eggs not only reveals the high environmental contamination rates in the municipality of Pelotas, but also warns of the urgent need to implement health education and responsible dog ownership programs, as well as the need to adopt additional control measures. The evaluation of the ovicidal activity showed that, regardless of the fungal extract tested, the fungus species evaluated were effective in reducing Ancylostoma spp. egg hatchability, and thus are potential candidates for the biological control of this nematodeThe role of companion animals as reservoirs of zoonotic diseases has been recognized as significant public health problem worldwide.
O papel dos animais de companhia como reservatórios de doenças zoonóticas tem sido reconhecido como significativo problema de saúde pública em todo o mundo. Ancylostoma caninum e A. braziliense são parasitos zoonóticos transmitidos ao homem pelo contato com solos contaminados com ovos e larvas destes ancilostomídeos. As consideráveis prevalências de contaminação ambiental por ovos de Ancylostoma spp., aliada as dificuldades de medidas de controle e desinfecção do solo, assim como o surgimento de resistência a terapia anti-helmíntica, evidenciam a necessidade de métodos alternativos que auxiliem no controle destes helmintos. Considerando-se o fato que os nematoides que infectam animais gastam parte do seu ciclo de vida no solo e que os fungos nematófagos, comumente encontrados nesse ecossistema, desenvolvem relações parasíticas ou predatórias com esses parasitos, desempenhando importante papel como inimigos naturais, torna-se viável e desejável o emprego destes agentes no controle eficaz de nematoides. Desta forma, os fungos nematófagos podem ser utilizados em situações em que o ambiente já está contaminado. Os objetivos do presente estudo foram verificar a prevalência de helmintos em fezes de cães coletadas em vias públicas do município de Pelotas, RS, Brasil, e avaliar a atividade ovicida in vitro de diferentes preparações de extratos brutos enzimáticos dos isolados fúngicos Paecilomyces lilacinus CG193, P. lilacinus MICLAB 009, Trichoderma virens MICLAB 008 e Trichoderma harzianum CG502 sobre ovos de Ancylostoma spp. No período de janeiro a março de 2012 foram coletadas aleatoriamente 15 amostras de fezes em 14 pontos do município, totalizando 210 amostras, as quais foram submetidas a exames coproparasitológicos. Os isolados fúngicos avaliados foram cultivados em meio mínimo líquido, em agitação, durante cinco dias a 28ºC. As preparações fúngicas consistiram do meio líquido sobrenadante sem filtração (extrato bruto) e filtrado (extrato filtrado), do micélio macerado (macerado bruto) e micélio macerado submetido a filtração (macerado filtrado). Os ovos de Ancylostoma spp. foram obtidos a partir de fezes de cães naturalmente parasitados. Os ensaios in vitro consistiram em quatro tratamentos e um grupo controle. Em placas de Petri foram vertidos 4mL de cada extrato fúngico e a esse volume foi acrescido 1mL de uma suspensão contendo aproximadamente 103 ovos de Ancylostoma spp. O grupo controle consistiu de 1mL de suspensão contendo 1000 ovos de Ancylostoma spp. acrescido de 4mL de água destilada estéril. Todas as placas foram incubadas a 25ºC, durante 24 horas. Cada ensaio foi constituído de cinco repetições. Após esse período, o número total de larvas presente em cada tratamento e no grupo controle foi contato. Os resultados obtidos demonstram que a prevalência geral de contaminação ambiental em vias públicas foi de 57,6% tanto em mono (67,8%) como em multi-infecções (32,2%). Ancylostoma spp. ocorreu em maior frequência (88,4%), seguido de Trichuris vulpis. (38,8%). Na avaliação da atividade ovicida in vitro foi observado que as diferentes formulações fúngicas testadas em cada fungo diferiram (p<0,05) do grupo controle, evidenciando relevante efeito ovicida. Quando calculado o percentual de redução de eclosão dos ovos, evidenciou-se que o maior valor de redução ocorreu quando utilizada a preparação macerado bruto, com percentuais de redução de 68,43% e 47,05% em P. lilacinus MICLAB009 e CG193, respectivamente, e 56,43% em T. harzianum. Apenas no isolado T. virens o percentual de redução do macerado bruto (52,25%) foi levemente inferior ao macerado filtrado (53,64%). O encontro de 88,4% de fezes positivas para ovos de Ancylostoma spp., além de evidenciar as altas taxas de contaminação ambiental no município de Pelotas, alertam para urgente implementação de programas de educação sanitária e de posse responsável dos cães, assim como para a necessidade da adoção de medidas complementares de controle. A avaliação da atividade ovicida mostrou que independente do extrato fúngico testado, as espécies de fungos avaliadas foram eficazes em reduzir a eclodibilidade de ovos de Ancylostoma spp. e, portanto, constituem-se em potenciais candidatos para o emprego no controle biológico deste nematoide.
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Dallarés, Villar Sara Maria. "Twenty thousand parasites under the sea: a multidisciplinary approach to parasite communities of deep-dwelling fishes from the slopes of the Balearic Sea (NW Mediterranean)." Doctoral thesis, Universitat Autònoma de Barcelona, 2017. http://hdl.handle.net/10803/402224.
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El Mar Mediterráneo profundo permanece en gran parte inexplorado, y, específicamente, las comunidades parásitas de los peces mediterráneos de aguas profundas son mayormente desconocidas.
El principal objetivo de la presente tesis es caracterizar las comunidades parásitas de las importantes especies ícticas de aguas profundas siguientes: Mora moro (Risso, 1810), Phycis blennoides (Brünnich, 1768), Galeus melastomus Rafinesque, 1810, Scyliorhinus canicula (Linnaeus, 1758), Etmopterus spinax (Linnaeus, 1758) y Centroscymnus coelolepis Barbosa du Bocage and de Brito Capello, 1864. Otro propósito importante es evaluar la respuesta de estas comunidades a gradientes y variables ambientales, a la dieta y a la ecología trófica de los hospedadores y su posible impacto en el estado de salud de estos últimos.
En los capítulos tercero a sexto se describen las comunidades parásitas de las especies mencionadas en diferentes estaciones, estratos de profundidad y localidades de las vertientes continental e insular del Mar Balear. Mientras que las comunidades parásitas de M. moro, P. blennoides y G. melastomus se caracterizaron por altos valores abundancia, riqueza y diversidad, las de S. canicula, E. spinax y C. coelolepis eran comparativamente más pobres y menos diversas. Diferencias ontogénicas, batimétricas, estacionales y geográficas se detectaron en las comunidades parásitas de las especies tratadas, en todos los casos asociadas a las dinámicas alimentarias (a su vez asociadas a la disponibilidad de presas a lo largo de los gradientes mencionados, en la mayoría de casos) de sus hospedadores. Se hallaron relaciones detalladas entre parásitos y presas ingeridas por los diferentes hospedadores, permitiendo confirmar las vías de transmisión ya conocidas para algunos parásitos y sugiriendo nuevas vías de infección para otros. La mayoría de parásitos se asociaron a altos niveles de O2 y turbidez del agua. Mientras que los primeros favorecen la abundancia de parásitos con ciclos indirectos como resultado de la proliferación del zooplancton y la agregación de hospedadores intermediarios potenciales asociada, los segundos favorecen la transmisión de parásitos y aumentan la carga parasitaria debido a un incremento del zooplancton y de las comunidades de invertebrados suprabentónicos a causa de una mayor disponibilidad de nutrientes. Altos niveles de salinidad del agua parecieron estar asociados a mayores abundancias de los nematodos Hysterothylacium aduncum y Proleptus obtusus, probablemente porque la salinidad se correlaciona con la abundancia de decápodos y misidáceos, entre otros, que son utilizados por esos nematodos como hospedadores intermediarios. A su vez, altos niveles de temperatura del agua se asociaron a la abundancia de parásitos monogeneos, probablemente debido a un mayor éxito de eclosión de los huevos y a una reducción del tiempo de maduración reproductiva a mayores temperaturas, como ya había sido demostrado para estos parásitos. Se detectaron una inhibición de la enzima acetilcolinesterasa y mayores niveles de peroxidación de lípidos, ambos posiblemente asociados a estrés por las infecciones parasitarias, en varias especies de peces. En general, la carga parasitaria no tuvo un impacto significativo en los índices de condición generales de los peces, ni en el número y/o área de centros macrofágicos o melanomacrofágicos esplénicos en el caso de teleósteos, o en el número de melanomacrófagos hepáticos en el caso de G. melastomus.
En el séptimo capítulo se aportan datos morfológicos, moleculares y ecológicos de diferentes estadíos de desarrollo del cestodo Ditrachybothridium macrocephalum en su hospedador definitivo, G. melastomus, y en el Mar Mediterráneo por primera vez.
En el octavo capítulo la familia de cestodos Sphyriocephalidae es revisada. Se describe la nueva especie Heterosphyriocephalus encarnae n. sp., y dos especies ya existentes, Sphyriocephalus viridis y Sphyriocephalus tergestinus, se redescriben a partir de datos morfológicos y moleculares de nuevo material recolectado y de material de museo.The Mediterranean deep-sea remains mostly unexplored and, specifically, the parasite communities of Mediterranean deep-dwelling fishes are largely unknown. The central purpose of the present thesis is to characterize the parasite communities infecting the following important deep-dwelling ichthyc species in the Balearic Sea: Mora moro (Risso, 1810), Phycis blennoides (Brünnich, 1768), Galeus melastomus Rafinesque, 1810, Scyliorhinus canicula (Linnaeus, 1758), Etmopterus spinax (Linnaeus, 1758) and Centroscymnus coelolepis Barbosa du Bocage and de Brito Capello, 1864. Another main objective is to assess the responsiveness of these parasite communities to environmental gradients and variables, to host diet and trophic ecology and their possible impact on host health condition. In the third to sixth chapters, the parasite communities of the mentioned species are described on different seasons, depth strata and localities from the mainland and insular slopes of the Balearic Sea. While parasite communities of M. moro, P. blennoides and G. melastomus were characterized by high abundance, richness and diversity values, those of S. canicula, E. spinax and C. coelolepis were comparatively poorer and less diverse. Ontogenic, bathymetric, seasonal and geographic differences in the parasite communities of the different species addressed were detected, in all cases linked to the feeding dynamics (in turn linked to prey availability across the mentioned gradients, in most cases) of their hosts. Detailed relationships were found between parasite taxa and prey ingested by the different hosts, allowing confirmation of the transmission pathways known for some parasites and suggesting new ways of infection in others. Most parasites were linked to high O2 and turbidity levels. While the former enhances the abundance of parasites with indirect life cycles as a result of zooplankton proliferation and the associated aggregation of potential intermediate hosts, the latter favours parasite transmission and increases parasite loads due to an increase of zooplankton and suprabenthic invertebrate communities linked to higher nutrient availability. High water salinity levels seemed to be linked to higher abundance of the nematodes Hysterothylacium aduncum and Proleptus obtusus, probably because salinity correlates with the abundance of decapods and mysids, among others, which are used by these nematodes as intermediate hosts. In turn, high water temperature levels correlated with the abundance of monogenean parasites, likely due to enhanced egg hatching success and reduced time to maturity, as previously reported for these parasites. An inhibition of acetylcholinesterase activity and increased lipid peroxidation levels were detected in different fish species, possibly associated to infection-related stress. In general, parasite burden did not have a significant effect on fish general condition indices or on the number and/or surface of splenic melano-macrophage or macrophage centres in the case of teleosts, or on the number of hepatic melano-macrophages in the case of G. melastomus. In the seventh chapter, morphological, molecular and ecological data of different developmental stages of the cestode Ditrachybothridium macrocephalum are provided for the first time from its definitive host, G. melastomus, in the Mediterranean Sea. In the eighth chapter, the cestode family Sphyriocephalidae is revised. The new species Heterosphyriocephalus encarnae n. sp. is described, and two already existing species, Sphyriocephalus viridis and Sphyriocephalus tergestinus are further redescribed based on morphological and molecular data of newly-collected and museum material.
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Pérez, García David. "A journey to the deeps of the sea: parasite communities of the Alepocephalidae and the Macrouridae in the Balearic Sea (NW Mediterranean)." Doctoral thesis, Universitat Autònoma de Barcelona, 2017. http://hdl.handle.net/10803/402267.
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Tot i el gran nombre d’estudis del mar Mediterrani, el seu mar profund segueix sent en gran part desconegut, especialment en relació a la seva fauna parasitària. Els paràsits són components importants dels ecosistemes. Al trobar-se al llarg de la xarxa tròfica, aquests poden aportar informació sobre el seu hoste. També és d’esperar que l’hoste respongui als efectes perjudicials dels paràsits a diferents nivells. A més a més, les alteracions cito-histològiques i/o les variacions de certs marcadors bioquímics poden ser relacionades amb la presència de paràsits i ser útils per avaluar la salut dels peixos. Com la majoria dels peixos del Mediterrani profund són encara en gran part desconeguts, els seus paràsits poden ser valuoses fonts d’informació. Alepocephalus rostratus i els Macrouridae són components importants de les comunitats íctiques del talús profund del mar Balear. Per aquest motiu, l’objectiu de la present tesi és caracteritzar per primer cop les comunitats de paràsits d’Alepocephalus rostratus i dels macrúrids Coelorinchus caelorhincus, Coelorinchus mediterraneus, Coryphaenoides guentheri i Coryphaenoides mediterraneus, i estudiar la seva variabilitat natural i el seu efecte sobre la salut dels peixos en el mar Balear. A més a més, es discutiran la relacions entre el perfil tròfic dels hostes i les comunitats parasítiques. Les comunitats de paràsits de A. rostratus estaven constituïdes per un baix nombre d’espècies (set espècies de metazous i un coccidi). Una baixa riquesa conjuntament amb una alta proporció de formes larvàries dels paràsits és normalment característic de peixos meso- i batipelàgics. Això és deu probablement a la dieta especialitzada d’A. Rostratus en organismes planctònics. Les espècies predominants van ser les larves de Tetraphyllidea i de nematodes cucullànids. L’activitat de acetilcolinesterassa estava positivament relacionada amb l’abundància de Tetraphyllidea fam. gen. sp., Anisakis physeteris i H. aduncum i negativament amb la de Cucullaninae gen. sp. L’activitat de lactat deshidrogenassa va mostrar una relació positiva amb l’abundància dels paràsits Paracyclocotyla cherbonnieri i Tetraphyllidea fam. gen. sp. Es van detectar coccidis als cecs pilòrics amb una prevalença del 90% a Barcelona. Un total de 11 taxons van ser trobats als quatre macrúrids estudiats, sent el copèpode Hamaticolax resupinus l’únic paràsit comú entre tots ells. Coelorinchus mediterraneus, C. guentheri i Cor. mediterraneus van exhibir unes comunitats de paràsits bastant homogènies, especialment en els últims dos peixos, segurament per la seva similar dieta. Coelorinchus mediterraneus va tenir la major riquesa de taxons paràsits (vuit espècies), mentre que C. guentheri i Cor. mediterraneus en van tenir cinc i sis, respectivament, i C. caelorhincus tres. Gran part dels paràsits van ocórrer en baixa prevalença (<10%), mentre que només tres espècies van ser excepcionalment prevalents i abundants: les larves de Cucullanidae fam. gen. sp. en C. caelorhincus; Lepidapedon desclersae en Coe. mediterraneus i Hysterothylacium aduncum en ambdues espècies de Coryphaenoides. Pocs efectes en la salut dels peixos van quedar reflectits a nivell enzimàtic i histopatològic, probablement per la poca càrrega parasitària en els hostes. Hamaticolax resupinus n. sp. és descrit per primer cop en Coe. mediterraneus i Cor. mediterraneus. És la segona espècie d’Hamaticolax que es troba en macrúrids i és el Bomolochidae trobat a major profunditat a nivell mundial. Hamaticolax resupinus n. sp. és molt similar a H. maleus Oldewage, 1994, però es diferencia d’aquest, entre d’altres, per tenir una mida del cos més petita. Raphidascaris (R.) macrouri n. sp. és descrit per primer cop en els macrúrids del mediterrani profund Nezumia aequalis i Trachyrincus scabrus. Aquesta espècie es diferencia de la resta del subgènere pel seu gran nombre de papil·les caudals i espícules curtes.Despite the great number of studies on the Mediterranean, its deep sea remains largely unknown, especially in relation to its parasite fauna. Parasites are important components of ecosystems. Being ubiquitous throughout all food webs, they can provide significant information of their hosts. In addition, it is expected that host respond to the harmful effects of parasites at different levels. Moreover, histo-cytological alterations and/or variations on the levels of certain biochemical markers can be related to the presence of parasites and are means to evaluate fish health. Since most of the important deep Mediterranean fishes are still largely unknown, their parasites can prove to be valuable sources of information. Alepocephalus rostratus and Macrouridae are important components of the fish community along the deep slope of the Balearic Sea. For this reason, the objectives of the present thesis are to characterize for the first time the parasite communities of Alepocephalus rostratus, and the macrourids Coelorinchus caelorhincus, Coelorinchus mediterraneus, Coryphaenoides guentheri and Coryphaenoides mediterraneus, their natural variability and their effects on fish health in the Balearic Sea. In addition, the relationship between the trophic profile of hosts and parasite communities will be discussed. The parasite communities of A. rostratus were constituted by little number of species (seven metazoan species and one coccidian). Low richness together with the high proportion of parasite larval forms are usually characteristic of meso- and bathypelagic fish species. This is probably due to the specialized diet of A. rostratus on planktonic organisms. The larval tetraphyllideans and cucullanid nematodes were the predominant species. A positive relationship was found between acetylcholinesterase activity and Tetraphyllidea fam. gen. sp., Anisakis physeteris and H. aduncum abundance and a negative one with the abundance of Cucullaninae gen. sp. Lactate dehydrogenase showed a positive relationship with the abundance of the parasites Paracyclocotyla cherbonnieri and Tetraphyllidea fam. gen. sp. Coccidians were detected in the pyloric caeca with a prevalence of 90% in Barcelona. A total of 11 parasite taxa were found among the four macrourids studied, being the copepod Hamaticolax resupinus the only parasite shared by all of them. Coelorinchus mediterraneus, C. guentheri and Cor. mediterraneus exhibited rather homogeneous parasite communities, especially in the case of the latter two, probably due to their similar diet composition. Coelorinchus mediterraneus showed the highest richness of parasite taxa (eight species), whereas C. guentheri and Cor. mediterraneus harboured up to five and six, respectively, and C. caelorhincus up to three. Several of the encountered parasites occurred at very low prevalence (<10%), while only three species were exceptionally prevalent and abundant: Cucullanidae fam. gen. sp. larvae in C. caelorhincus; Lepidapedon desclersae in Coe. mediterraneus and Hysterothylacium aduncum in both Coryphaenoides spp. Few parasite effects on fish health were reflected at enzymatic and histological level, probably due to the low parasite burden in their hosts. Hamaticolax resupinus n. sp. is described for the first time from Coe. mediterraneus and Cor. mediterraneus. It is the second Hamaticolax species that parasitizes a macrourid species and it is the deepest bomolochid encountered worldwide. Hamaticolax resupinus is smaller than its closely related species H. maleus, females have wider genital double-somite markedly wider than free abdominal somites and with convex lateral margins. Raphidascaris (R.) macrouri n. sp. is described for the first time from the deep Mediterranean macrourids Nezumia aequalis and Trachyrincus scabrus. This species differentiates from the rest of the subgenus by having high number of caudal papillae and short spicules.
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Dhorda, Mehul. "Molecular parasitology and diagnosis of Malaria in pregnancy." Paris 6, 2010. http://www.theses.fr/2010PA066405.
Full textAbstract:
Le paludisme reste la maladie parasitaire la plus répandue au monde dont les effets néfastes sont particulièrement sévères chez les enfants et les femmes enceintes. La morbidité liée au paludisme pendant la grossesse (PpG) prend souvent la forme d’une séquestration parasitaire dans le placenta, d’une anémie chez la femme et chez le nouveau-né et d’une réduction du poids de l’enfant à la naissance. L’ensemble de ces facteurs augmente le risque de la mortalité maternelle, fœtale et néonatale. Il y a un besoin urgent d’améliorer la prise en charge du PpG à savoir le traitement, le diagnostic et la prophylaxie contre cette maladie. Les traitements antipaludiques actuellement recommandés pour les femmes dans le 2e ou 3e trimestre de leur grossesse sont les combinaisons thérapeutiques à base d’artémisinine (CTA). Les données actuelles sur ces médicaments concernent seulement environ 1500 femmes, principalement non-afriquaines. Des études rigoureuses sur l’utilisation de la combinaison artémether-luméfantrine (AL, Coartem®) chez les femmes enceintes Africaines n’ont pas encore été réalisées. De plus, la connaissance de la pharmacocinétique de ces médicaments, altérée chez les femmes enceintes, reste très limitée. Les CTAs sont supposées être utilisées une fois que l’infection a été mise en évidence par un test de diagnostic. La goutte épaisse est le moyen de diagnostic du PpG le plus souvent utilisé, mais cet outil n’est pas le mieux adapté à cette utilisation puisque les infections séquestrées placentaires peuvent rester indécelables dans le sang périphérique. Des tests rapides de diagnostic (TDR), où des protéines parasitaires dénommées HRP2 qui circulent dans le sang sont décelées par immuno-chromatographie, pourraient combler cette lacune. Les TDRs à l’HRP2 semblent pouvoir détecter des infections en dessous du seuil de détection microscopique, mais ceci n’a été démontré qu’au moment de l’accouchement. Leur utilité lors des dépistages effectués pendant la grossesse n’a pas été encore été évaluée. Enfin, il n’existe que très peu de données sur la dynamique de l’infection palustre durant la grossesse. OBJECTIFS : (1) Évaluer l’efficacité et l’innocuité de la CTA Coartem vs. Quinine dans le traitement du paludisme simple chez les femmes enceintes durant le 2e ou 3e trimestre de grossesse ; (2) Évaluer la sensibilité et la spécificité de la gouttes épaisses vs. Le TDR à l’HRP2 pour la détection des infections parasitaires pendant la grossesse ; (3) Obtenir des données sur l’histoire naturelle des infections palustres durant la grossesse, en se basant sur l’analyse moléculaires de parasites. MÉTHODES : Cette série d’études a été réalisée à Mbarara, une ville d’environ 70,000 habitants dans le sud-ouest de l’Ouganda. Mille deux cent vingt-neuf femmes enceintes ont été incluses dans la cohorte dite « MIP ». Chacune a été dépistée avec un TDR à l’inclusion dans la cohorte. Trois cent quatre femmes dans le 2e ou le 3e trimestre de leur grossesse qui ont été diagnostiquées avec le paludisme par goutte épaisse ont été invitées à participer à un essai clinique randomisé de non-infériorité de Coartem, une CTA composée de l’artémether et de la luméfantrine, et de la quinine par voie orale. Ces 304 femmes ont été suivies hebdomadairement jusqu'à l’accouchement. Les taux de guérison à J42 et/ou à l’accouchement ont été confirmés par génotypage des parasites par PCR. Les effets secondaires des médicaments, l’issue de la grossesse, la croissance et le développement du nouveau-né jusqu'à un an de vie ont été analysés. Pour l’évaluation des tests diagnostiques, les ultimes 103 femmes recrutées dans la cohorte MIP ont été suivies hebdomadairement (les femmes de l’essai clinique) ou mensuellement (les femmes de la cohorte MIP). A chaque visite de suivi, du sang capillaire ou veineux a été prélevé pour préparer des gouttes épaisses et des frottis, pour effectuer un TDR à l’HRP2 (Paracheck Pf®), et enfin pour des études moléculaires dont un dépistage des 4 espèces de Plasmodium qui infectent l’Homme par PCR. Les indicateurs standard des tests de diagnostic ont été calculés pour les gouttes épaisses et pour les TDRs en considérant les résultats de l’analyse PCR comme « gold standard ». Pour le suivi des femmes afin de décrire l’évolution de l’infection parasitaire post-traitement ou le long de la grossesse, les échantillons prélevés aux visites hebdomadaires ont aussi été testés pour Plasmodium par PCR, et les infections au P. Falciparum ont été caractérisées par le génotypage de 3 marqueurs parasitaires polymorphes : glurp, msp2, et msp1. RESULTATS : 304 femmes (152 dans chaque bras) ont été enregistrées dans l’étude thérapeutique. Les taux de guérison avec les deux médicaments étaient élevés : 99. 3% (96. 0—99. 9) pour le Coartem à J42 et 98. 2% (93. 8—99. 8) à l’accouchement. Pour la quinine, les chiffres correspondant étaient aussi élevés : 97. 6% (93. 1-99. 5) à J42 et 96. 1% (90. 4-98. 9) à l’accouchement. Donc l’efficacité du Coartem n’était pas inférieure à celle de la quinine. Aucun effet secondaire sévère n’a été enregistré chez les patients traités par le Coartem. Les effets indésirables de la quinine ont conduit à l’arrêt du traitement dans 4 cas. L’issue des grossesses était similaire dans les deux bras. Les résultats de 299 visites/échantillons furent analysables dans l’évaluation des tests diagnostiques. La PCR a détecté 23 infections de P. Falciparum, alors que la goutte épaisse n’en a détecté que 7 et le TDR à l’HRP2 seulement 6, La sensibilité des tests était de 30. 4% (95%CI 14. 1—53. 0) et de 26. 1% (95%CI 11. 1—48. 7) ; la spécificité de la goutte épaisse était de 99. 64% et des TDRs, de 100%. Des échantillons prélevés de 35 femmes qui ont reçu un traitement antipaludéen ont été analysés. Les résultats de ces analyses ont révélé la complexité et la variabilité des infections post-traitement. Trois cas de P. Vivax chez des femmes enceintes ont été confirmés, et une analyse de la séquence du gène de la dihydrofolate reductase a indiqué que certains de ses parasites avaient acquis des mutations liées à la résistance à la pyrimethamine. DISCUSSION & CONCLUSIONS : L’efficacité et l’innocuité d’un traitement avec du Coartem (comparable à celui obtenu avec la quinine) amène des nouvelles données rassurantes quant au choix de drogues du type CTA pour le traitement du paludisme chez les femmes enceintes. La sensibilité des TDRs était moindre que celle attendue, mais ceci pourrait être du au type d’analyse possibles dans le cadre de notre suivi. De études qui évalueraient l’utilité des TDRs en prenant en compte des traitements antipaludiques donnés aux femmes enceintes, seraient à prévoir. Une dynamique compliquée des infections palustres, souvent chroniques et non décelées par microscopie, a été observée au fil du temps après traitement. Enfin il a été démontré qu’une transmission stable de P. Vivax, un parasite auparavant considéré comme étant très rare Afrique sub-Saharienne, peut être maintenue malgré une haute prévalence de personne Duffy négative.
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Amorim, Jandui Almeida [UNESP]. "Levantamento de sarcofagídeos(Diptera) do Brasil incluindo a caracterização molecular de Peckia (Pattonella) intermutans (Walker)." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/87797.
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amorim_ja_me_botib.pdf: 950896 bytes, checksum: 510efe38e747c38b3b0503fe22f6fe0a (MD5)Tendo em vista a grande similaridade interespecífica, a identificação de muitos sarcofagídeos usando os caracteres morfológicos é complicada e, sob este aspecto, o desenvolvimento e a aplicação de ferramentas moleculares se mostram cada vez mais necessários à resolução taxonômica e sistemática de diversas espécies. Os dípteros da família Sarcophagidae, especialmente os de hábito necrófilo, têm recebido destaque no campo forense devido à constância com que são encontrados associados a cadáveres, podendo contribuir de forma relevante na estimativa do intervalo pós-morte (IPM), descoberta do local e causa da morte, entre outros. No entanto, para que os espécimes coletados sejam usados de forma apropriada na obtenção de informações para auxiliar o trabalho de perícia, é primordial a identificação correta dos organismos, já que o IPM pode ser calculado com base na taxa de desenvolvimento que varia entre as diferentes espécies. Neste estudo, 194 espécies pertencentes à subfamília Sarcophaginae (Diptera), incluídas em 30 gêneros, são listadas levando em conta suas respectivas distribuições geográficas registradas no território brasileiro. Os gêneros que apresentaram uma grande diversidade de espécies foram Oxysarcodexia (24,7%), Lepidodexia (10,9%), Peckia (10,3%) e Dexosarcophaga (8%). Oxysarcodexia amorosa, O. thornax, Peckia (Euboettcheria) collusor, Peckia (Pattonella) intermutans e Sarcodexia lambens são encontradas na maioria dos estados brasileiros. No arquipélago de Fernando de Noronha, além de Nephochaetopteryx calida, que não apresenta até o momento registro de ocorrência para as localidades continentais, foram encontradas espécies de ampla distribuição no Brasil: O.thornax, (Peckia) chrysostoma e Tricharae (Sarcophagula) occidua. Adicionalmente, a análise da variabilidade genética entre representantes de populações de Peckia...
Due to high interspecific similarity, the identification of many sarcophagids by morphological characters is complicated and, in this way, the development and application of molecular tools have been required to address taxonomic and systematic species. The flies of the Sarcophagidae family, especially necrophagous species, have received attention in the forensic field because of the frequence with which they are found associated with cadavers, thus may contribute to estimate the post-mortem interval (:eMI), the discovery of place and cause of death, among other. However, for the specimens collected are used properly in obtaining information to assist the investigation, the correct identification of species is essential, since the PMI can based on the development rate that varies among different species. In this study, 194 species belonging to the Sarcophaginae subtribe (Diptera), included in 30 genus, are listed taking into account their geographic distribution throughout the Brazilian territory. The genus that showed a great species diversity were: Oxysarcodexia (24.7%), Lepidodexia (10.9%), Peckia (10.3%) and Dexosarcophaga (8%). Oxysarcodexia amorosa, 0. thornax, Peckia (Euboettcheria) collusor, Peckia (Pattonella) intermutans and Sarcodexia lambens are found in most Brazilian states, and only 3 of these were recorded in Fernando de Noronha archipelago, including Nephochaetopteryx calida, which until now has no record of occurrence for continental locations. Furthermore, genetic variability analysis among population of Peckia (Pattonella) intermutans (Walker) from Campinas, Jundiai, Mogi Guayu, Ubatuba (all cities located in Sao Paulo State) and Salvador (Bahia State) were performed based on sequences of carboxy-terminal region of the Cytochrome Oxidase I (COl) mitochondrial gene. This latter approach may help to validate a methodology for molecular identification of species... (Complete abstract click electronic access below)
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Pedrassani, Daniela [UNESP]. "Aspectos morfológicos, imunológicos e epidemiológicos do Dioctophyme renale em cães no Distrito de São Cristóvão, Três Barras, Santa Catarina." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/103838.
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pedrassani_d_dr_jabo.pdf: 2839127 bytes, checksum: e29898c79545e32be78e2f67b76b1d9d (MD5)Universidade do Contestado-Campus Canoinhas
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Pedrassani, Daniela. "Aspectos morfológicos, imunológicos e epidemiológicos do Dioctophyme renale em cães no Distrito de São Cristóvão, Três Barras, Santa Catarina /." Jaboticabal : [s.n.], 2009. http://hdl.handle.net/11449/103838.
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Orientador: Adjair Antônio do NascimentoBanca: Milton Hissashi Yamamura
Banca: Alessandro Francisco Talamini do Amarante
Banca: Vanete Thomaz Soccol
Banca: Rosangela Zacarias Machado
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Gállego, Culleré M. (Montserrat). "Contribución al conocimiento de la acarofauna de los micromamíferos de la región catalana." Doctoral thesis, Universitat de Barcelona, 1986. http://hdl.handle.net/10803/672995.
Full textAbstract:
El desconocimiento generalizado de nuestra base de trabajo, la acarofauna, conlleva que, como paso previo a cualquier otro estudio, deba procederse primariamente a la tarea mucho más ingrata, y a veces poco reconocida, de realización de estudios faunísticos que son un medio indispensable para que la investigación acarológica pueda llevarse a cabo. Los estudios taxonómicos son otro paso necesario y obligado, tanto para la descripción de nuevas como para las deducciones filogenético-evolutivas que de las mismas puedan derivarse, dada la estrecha relación entre la especificidad de un parásito y su permanencia en un tipo determinado de hospedador.
En definitiva, el trabajo que se presenta se planteó con los siguientes objetivos: 1) Realización de estudios taxonómicos, tanto morfológicos como de variabilidad, de las especies insuficientemente conocidas, así como la descripción de aquellas nuevas especies que se han encontrado. 2) Ampliar los conocimientos faunísticos y geográficos de la acarofauna de los micromamíferos de la región catalana. 3) Estudiar las interacciones de la parasitocenosis acarina en dichos micromamíferos.
Books on the topic "Parasitology"
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Garcia, Lynne Shore. Diagnosticmedical parasitology. 2nd ed. Washington, D.C: American Society for Microbiology, 1993.
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Garcia, Lynne Shore. Diagnostic medical parasitology. 3rd ed. Washington, D.C: ASM Press, 1997.
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Gunn, Alan, and Sarah J. Pitt. Parasitology. Chichester, UK: John Wiley & Sons, Ltd, 2012. http://dx.doi.org/10.1002/9781119968986.
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G, Cox Francis E., ed. Modern parasitology: A textbook of parasitology. 2nd ed. Oxford: Boston, 1993.
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Zajac, Anne M. Veterinary clinical parasitology. 7th ed. Ames, Iowa: Blackwell Pub. Professional, 2006.
Find full textBook chapters on the topic "Parasitology"
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Paul, Allan, Amelia G. White, and Anne M. Barger. "Parasitology." In Clinical Pathology and Laboratory Techniques for Veterinary Technicians, 177–225. Chichester, UK: John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781119421351.ch6.
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Gooch, Jan W. "Parasitology." In Encyclopedic Dictionary of Polymers, 913. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_14425.
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Viita-aho, Teija Kaarina. "Parasitology." In Nursing the Feline Patient, 195–203. Ames, Iowa, USA: John Wiley & Sons, Inc, 2016. http://dx.doi.org/10.1002/9781119264910.ch27.
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Sures, Bernd, and Milen Nachev. "Environmental Parasitology." In Encyclopedia of Parasitology, 1–4. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-27769-6_1076-2.
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Sures, Bernd, and Milen Nachev. "Environmental Parasitology." In Encyclopedia of Parasitology, 951–54. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-43978-4_1076.
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Nelson, G. S. "Teaching Medical Parasitology." In Parasitology, 158–68. New York, NY: Springer New York, 2002. http://dx.doi.org/10.1007/978-1-4612-5550-5_13.
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Arundel, J. H., and M. D. Rickard. "Teaching Veterinary Parasitology." In Parasitology, 169–77. New York, NY: Springer New York, 2002. http://dx.doi.org/10.1007/978-1-4612-5550-5_14.
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Loker, Eric S., and Bruce V. Hofkin. "The Future of Parasitology." In Parasitology, 471–504. 2nd ed. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9780429277405-10.
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Gupta, Rakesh Kumar, and Devinder Sharma. "Parasitology of Bees." In Beekeeping for Poverty Alleviation and Livelihood Security, 281–95. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-017-9199-1_9.
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Garcia, Lynne S., and Gary W. Procop. "Diagnostic Medical Parasitology." In Manual of Commercial Methods in Clinical Microbiology, 284–308. Hoboken, NJ: John Wiley & Sons, Inc, 2016. http://dx.doi.org/10.1002/9781119021872.ch15.
Full textConference papers on the topic "Parasitology"
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Peña-Fernández, Antonio, Soledad Fenoy, Joshua Simons, Carmen Del Aguila, Jethro Shell, Mark Dennis Evans, and Lucrecia Acosta. "DEVELOPING A SMARTPHONE APP FOR LEARNING PARASITOLOGY." In 12th International Conference on Education and New Learning Technologies. IATED, 2020. http://dx.doi.org/10.21125/edulearn.2020.1289.
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Rochmah, Fitria Siwi Nur, and Novyan Lusiyana. "A Correlational Study on Medical Parasitology Practical Work and Students’ Achievement on Parasitology Materials on the Final Exam." In International Conference on Medical Education (ICME 2021). Paris, France: Atlantis Press, 2021. http://dx.doi.org/10.2991/assehr.k.210930.047.
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Fernando, Saminda, Gaya Ranawaka, and Tharanga Jayasuriya. "Parasitology eLab: a Covid-19 Pandemic Induced Drive for Change to Facilitate Laboratory Teaching-Learning Practices for Undergraduates." In Tenth Pan-Commonwealth Forum on Open Learning. Commonwealth of Learning, 2022. http://dx.doi.org/10.56059/pcf10.6215.
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The Parasitology eLab is a novel virtual learning environment developed amid the Covid-19 pandemic. To evaluate the Parasitology eLab educational website, this study focused on assessing students’ perceptions on the new learning environment and explored its impact on their academic achievements in laboratory assessments. This was an exploratory study that used a mixed method of data collection, including questionnaire surveys and assessments to evaluate learning achievement. Quantitative analyses were conducted to express descriptive statistics and correlations. The online survey received a good response. The students appreciated the creation of the website during the pandemic situation and expressed a high degree of satisfaction with its content and utility. This paper presents findings on students’ perceptions on the design of the website, its functionality as a learning resource in parasitology, and its positive impact on academic achievements of students in laboratory assessments.
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Pantoja, Mayara Cristina Gomes, and Antonio Sérgio Silva de Carvalho. "Experience report: A board game as a teaching resource in classes on parasitic diseases." In VI Seven International Multidisciplinary Congress. Seven Congress, 2024. http://dx.doi.org/10.56238/sevenvimulti2024-095.
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The study addresses health promotion in school education, emphasizing the importance of parasitology as a tool to understand and combat diseases related to poor socioeconomic and environmental conditions. Using educational games, such as "Battle of Parasites", developed during the UEPA Pedagogical Residency Program, the work aims to engage 8th grade students in dynamic learning about parasitology, facilitating the understanding of the life cycles of parasites and promoting the active participation of students in the construction of knowledge.
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Peña-Fernández, Antonio, Lucrecia Acosta, Sylvester Koroma, and Raoul Emeric Guetiya Wadoum. "STRENGTHENING PARASITOLOGY CAPABILITIES IN A COVID-19 WORLD." In 13th International Conference on Education and New Learning Technologies. IATED, 2021. http://dx.doi.org/10.21125/edulearn.2021.1600.
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Hosen, Md Delwar, Arafath Bin Mohiuddin, Nayamul Sarker, Md Shadman Sakib, Abdullah Al Sakib, Riyadot Hossain Dip, Md Redwan Ahmed, and Rezaul Haque. "Parasitology Unveiled: Revolutionizing Microorganism Classification Through Deep Learning." In 2024 6th International Conference on Electrical Engineering and Information & Communication Technology (ICEEICT). IEEE, 2024. http://dx.doi.org/10.1109/iceeict62016.2024.10534322.
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Peña-Fernández, Antonio, Carolina Hurtado, Maria Del Carmen Lobo-Bedmar, Fernando Izquierdo, Mark D. Evans, and Sergio Llorens. "CULTIVATION OF EMERGING HUMAN PARASITES: NOVEL E-PARASITOLOGY RESOURCES." In 13th annual International Conference of Education, Research and Innovation. IATED, 2020. http://dx.doi.org/10.21125/iceri.2020.0666.
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Aznar-Avendaño, Francisco Javier, Guillermo Albert-García, Pedro Barón-Rodríguez, Saúl Bernat-Ponce, Michael Butler-Margalef, Raúl Ceballos-Nagore, Raimon Cuxart-Erruz, et al. "TEACHING PARASITOLOGY IN BIOLOGY DEGREES: FROM SUBJECTS TO PRINCIPLES." In 16th International Technology, Education and Development Conference. IATED, 2022. http://dx.doi.org/10.21125/inted.2022.0726.
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Peña-Fernández, Antonio, Sylvester Koroma, Lucrecia Acosta, Guillermo Torrado, and María de los Ángeles Peña. "CAPACITY BUILDING USING AN OPEN-ACCESS E-PARASITOLOGY PHONE APP." In 14th annual International Conference of Education, Research and Innovation. IATED, 2021. http://dx.doi.org/10.21125/iceri.2021.2091.
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Peña-Fernández, Antonio, and Maria de los Angeles Peña. "TEACHING MEDICAL PARASITOLOGY IN A NEW PHYSICIAN ASSOCIATE MASTER’S PROGRAMME." In 11th annual International Conference of Education, Research and Innovation. IATED, 2018. http://dx.doi.org/10.21125/iceri.2018.2206.
Full textReports on the topic "Parasitology"
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Nicola Paul, Nicola Paul. How do glyphosates impact bumblebee productivity and parasitology? Experiment, January 2019. http://dx.doi.org/10.18258/12702.
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Caroline Keroack, Caroline Keroack. Walruses, Whales, and Worms: exploring marine mammal parasitology. Experiment, July 2014. http://dx.doi.org/10.18258/2993.
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Koech, Davy K. Malarial Ecology, Transmission, Immunology, Parasitology and Prophylaxis in Kenya. Fort Belvoir, VA: Defense Technical Information Center, January 2000. http://dx.doi.org/10.21236/ada384797.
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Hernandez Arenas, Diana Paola. Generalidades de la parasitología. Universidad Nacional Abierta y a Distancia, April 2020. http://dx.doi.org/10.22490/notas.3505.
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Hernandez Arenas, Diana Paola. Parásitos en la salud pública. Universidad Nacional Abierta y a Distancia, September 2023. http://dx.doi.org/10.22490/notas.6621.
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La parasitología, estudia la relación existente entre los organismos parásitos y sus huéspedes, pudiendo o no causar daños a su hospedador. Al igual que los parásitos, los sistemas de producción se desarrollan en un medio físico, biológico y social; y es en este último en donde suele influir de manera significativa para la salud pública de las regiones y poblaciones consolidándose como un factor importante en la presentación de enfermedades zoonóticas parasitarias y por ende causal del detrimento sanitario de las poblaciones que se ven afectadas. Por ello, la parasitología tomada desde el punto de vista de la salud pública, proporciona herramientas que permiten conocer y fortalecer la prevención y el control de los agentes parasitarios que afectan la población humana y animal debido a su carácter zoonótico, ayudando a reducir el impacto que ocasionan dichas zoonosis parasitarias en la salud pública; Sin embargo, es poco frecuente hallar bibliografía actualizada que logre demostrarlo claramente. Teniendo en cuenta lo anterior, la parasitología se instaura dentro del proceso académico de los estudiantes de Zootecnia como un eje encaminado a la comprensión no solo del ciclo de vida del parasito, sino también de las consecuencias que pueden traer para las explotaciones productivas y la población, por tanto, la presente nota de campus tiene como finalidad dar a conocer al estudiante las generalidades de las zoonosis vistas desde la salud pública, dando a conocer algunos aspectos concernientes con el impacto de la parasitología en esta, así como algunos de los parásitos zoonóticos más frecuentes. Inicialmente, se presenta el concepto de zoonosis parasitarias, los factores asociados a su transmisión y otros conceptos fundamentales que enmarca la temática, la cual se desglosa en cada uno de los capítulos que incluye el documento. Dicho contenido que puede ser usado como apoyo en el curso de Parasitología, el cual hace parte del componente disciplinar de la malla curricular de los programas de Zootecnia y Tecnología en Producción Animal.
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Hernandez Arenas, Diana Paola. Parasitos: "un desafío en la producción animal". Universidad Nacional Abierta y a Distancia, May 2022. http://dx.doi.org/10.22490/notas.4543.
Full textAbstract:
La parasitología estudia la relación existente entre los organismos parásitos y sus huéspedes, pudiendo o no causar daños a su hospedador. Al igual que los parásitos, los sistemas de producción se desarrollan en un medio físico, biológico y social, es así como se convierten un reto para los diferentes sistemas productivos y la comercialización de sus productos, consolidándose como una de las principales causas de pérdidas económicas y sanitarias en la producción pecuaria en todo el mundo.