Academic literature on the topic 'Spirurida'
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Journal articles on the topic "Spirurida"
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Moravec, František, and Liesl L. Van As. "Studies on some spirurids (Nematoda: Spirurida) from fishes of the Okavango River, Botswana." Systematic Parasitology 91, no. 2 (May 12, 2015): 119–38. http://dx.doi.org/10.1007/s11230-015-9565-0.
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Gibbons, L. M., P. K. Nicholls, T. Bailey, and J. Samour. "Paraspiralatus sakeri n. g., n. sp. (Nematoda: Spiruroidea, Spirocercidae) from saker falcons, Falco cherrug in Saudi Arabia and the first report of larvae from the subcutaneous tissues of houbara bustards, Chlamydotis undulata macqueeni in Pakistan." Journal of Helminthology 78, no. 1 (March 2004): 33–40. http://dx.doi.org/10.1079/joh2003209.
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AbstractA new nematode genus and species, Paraspiralatus sakeri , is described from the stomach of a wild-caught, female saker falcon in Saudi Arabia. This spirurid differs from the nearest genus and species Spiralatus baeri Chabaud, Brygoo & Durette, 1963 in the shape of the pseudolabia, shape of the buccal capsule and absence of a large cephalic vesicle. In addition, third stage spirurid larvae were recovered for the first time from subcutaneous tissues of two houbara bustards. These had died in the Rahim Yar Khan Rehabilitation Center (Houbara Foundation International, Lahore, Pakistan) in Pakistan and were examined at the National Avian Research Center in the United Arab Emirates. The morphology of the larvae and host pathology are described. Comparative studies with the adult spirurids from the saker falcon showed each to have similar cephalic and pharyngeal morphological features to the adults described indicating they are probably the same species. Spirurid nematodes of the suborder Spirurina normally have an arthropod intermediate host. In view of the host, the site from which the larvae were recovered and the fact that this is a rare occurrence, the houbara bustard is considered to be a paratenic host.
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Chen, Fanglin, Hong Zou, Xiao Jin, Dong Zhang, Wenxiang Li, Ming Li, Shangong Wu, and Guitang Wang. "Sequencing of the Complete Mitochondrial Genome of Pingus sinensis (Spirurina: Quimperiidae): Gene Arrangements and Phylogenetic Implications." Genes 12, no. 11 (November 8, 2021): 1772. http://dx.doi.org/10.3390/genes12111772.
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Despite several decades of intensive research on spirurine nematodes, molecular data on some of the main lineages are still absent, which makes taxonomic classification insufficiently resolved. In the present study, we sequenced the first complete mitogenome for the family Quimperiidae, belonging to P. sinensis (Spirurina: Quimperiidae), a parasite living in the intestines of snakehead (Ophiocephalus argus). The circular mitogenome is 13,874 bp long, and it contains the standard nematode gene set: 22 transfer RNAs, 2 ribosomal RNAs and 12 protein-coding genes. There are also two long non-coding regions (NCR), in addition to only 8 other intergenic regions, ranging in size from 1 to 58 bp. To investigate its phylogenetic position and study the relationships among other available Spirurina, we performed the phylogenetic analysis using Bayesian inference and maximum likelihood approaches by concatenating the nucleotide sequences of all 36 genes on a dataset containing all available mitogenomes of the suborder Spirurina from NCBI and compared with gene order phylogenies using the MLGO program. Both supported the closer relationship of Ascaridoidea to Seuratoidea than to Spiruroidea. Pingus formed a sister-group with the Cucullanus genus. The results provide a new insights into the relationships within Spirurina.
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Ivanova, E. S., N. E. Dokuchaev, and S. E. Spiridonov. "Antechiniella septentrionalis n. sp. (Spirurida: Acuariidae), a new intestinal nematode parasite of the tundra vole Microtus oeconomus (Pallas) (Rodentia: Muridae) in the north-east of Russia." Journal of Helminthology 93, no. 04 (May 15, 2018): 494–503. http://dx.doi.org/10.1017/s0022149x18000457.
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AbstractAntechiniella septentrionalis n. sp. (Spirurida: Acuariidae) is described from the duodenum of a tundra vole, Microtus oeconomus (Pallas), collected in the Magadan region in the north-east part of Russia. It differs from A. suffodiax (Beveridge & Barker, 1975) and A. sertatum Smales, 1991 mainly in having a larger number of postcloacal papillae (5–6 pairs vs 4 pairs), a differently shaped left spicule, the disposition of precloacal papillae in two rows vs one, and oblong vs oval eggs. Other differences include the different disposition of ovaries in A. septentrionalis n. sp and A. suffodiax and the different structure of deirids in A. septentrionalis n. sp. and A. sertatum. The new species was characterized molecularly (partial sequences for 18S rRNA, 28S rRNA and cox1 mtDNA). The phylogenetic analyses performed showed the affinity of the new species to the members of the Acuariidae and other spirurid nematodes.
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NADLER, S. A., R. A. CARRENO, H. MEJÍA-MADRID, J. ULLBERG, C. PAGAN, R. HOUSTON, and J. P. HUGOT. "Molecular phylogeny of clade III nematodes reveals multiple origins of tissue parasitism." Parasitology 134, no. 10 (May 17, 2007): 1421–42. http://dx.doi.org/10.1017/s0031182007002880.
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SUMMARYMolecular phylogenetic analyses of 113 taxa representing Ascaridida, Rhigonematida, Spirurida and Oxyurida were used to infer a more comprehensive phylogenetic hypothesis for representatives of ‘clade III’. The posterior probability of multiple alignment sites was used to exclude or weight characters, yielding datasets that were analysed using maximum parsimony, likelihood, and Bayesian inference methods. Phylogenetic results were robust to differences among inference methods for most high-level taxonomic groups, but some clades were sensitive to treatments of characters reflecting differences in alignment ambiguity. Taxa representing Camallanoidea, Oxyurida, Physalopteroidea, Raphidascarididae, and Skrjabillanidae were monophyletic in all 9 analyses whereas Ascaridida, Ascarididae, Anisakidae, Cosmocercoidea, Habronematoidea, Heterocheilidae, Philometridae, Rhigonematida and Thelazioidea were never monophyletic. Some clades recovered in all trees such as Dracunculoidea and Spirurina included the vast majority of their sampled species, but were non-monophyletic due to the consistent behaviour of one or few ‘rogue’ taxa. Similarly, 102 of 103 clade III taxa were strongly supported as monophyletic, yet clade III was paraphyletic due to the grouping of Truttaedacnitis truttae with the outgroups. Mapping of host ‘habitat’ revealed that tissue-dwelling localization of nematode adults has evolved independently at least 3 times, and relationships among Spirurina and Camallanina often reflected tissue predilection rather than taxonomy.
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Otašević, Suzana, Marija Trenkić Božinović, Aleksandar Tasić, Aleksandar Petrović, and Vladimir Petrović. "Thelazia Callipaeda and Eye Infections." Acta Facultatis Medicae Naissensis 31, no. 3 (September 1, 2014): 171–76. http://dx.doi.org/10.2478/afmnai-2014-0021.
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Summary Eye infections can be caused by metazoans - helminths and for long this parasitosis was believed to spread only in tropical regions of the world. Lately, mostly subconjunctival infections of adults or immature forms of D. repens, which is nematoda- filaria of canids, have been described and the man is just an accidental host. The genus Thelazia (Spirurida, Thelaziidae) comprises a cosmopolitan group of eye worm spirurids responsible for eye infections of domestic and wild animals and humans, carried by different kinds of flies. Nematodes localized in the conjunctival space, lacrimal canals and surrounding ocular tissues of humans can cause symptoms from mild to very serious and severe ones if not treated. The chief aim of this paper was to describe the morphological characteristics, life cycle, prevalence and clinical significance of Thelazia spp. as a parasite of the eye. To ensure the diagnosis of thelasiosis and appropriate treatment, it is necessary to have continuing medical reports and increase the awareness of this infection.
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Chabaud, Alain G., and Odile Bain. "The evolutionary expansion of the Spirurida." International Journal for Parasitology 24, no. 8 (December 1994): 1179–201. http://dx.doi.org/10.1016/0020-7519(94)90190-2.
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Lopes Torres, E. J., A. Maldonado, and R. Marisa Lanfredi. "Spirurids from Gracilinanus agilis (Marsupialia: Didelphidae) in Brazilian Pantanal wetlands with a new species of Physaloptera (Nematoda: Spirurida)." Veterinary Parasitology 163, no. 1-2 (July 2009): 87–92. http://dx.doi.org/10.1016/j.vetpar.2009.03.046.
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Moravec, František, and Jean-Lou Justine. "New records of spirurid nematodes (Nematoda, Spirurida, Guyanemidae, Philometridae & Cystidicolidae) from marine fishes off New Caledonia, with redescriptions of two species and erection of Ichthyofilaroides n. gen." Parasite 27 (2020): 5. http://dx.doi.org/10.1051/parasite/2020003.
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Recent examinations of spirurid nematodes (Spirurida) from deep-sea or coral reef marine fishes off New Caledonia, collected in the years 2006–2009, revealed the presence of the following five species: Ichthyofilaroides novaecaledoniensis (Moravec et Justine, 2009) n. gen., n. comb. (transferred from Ichthyofilaria Yamaguti, 1935) (females) (Guyanemidae) from the deep-sea fish Hoplichthys citrinus (Hoplichthyidae, Scorpaeniformes), Philometra sp. (male fourth-stage larva and mature female) (Philometridae) from Epinephelus maculatus (Serranidae, Perciformes), Ascarophis (Dentiascarophis) adioryx Machida, 1981 (female) (Cystidicolidae) from Sargocentron spiniferum (Holocentridae, Beryciformes), Ascarophis (Ascarophis) nasonis Machida, 1981 (males and females) from Naso lituratus and N. unicornis (Acanthuridae, Perciformes), and Ascarophisnema tridentatum Moravec et Justine, 2010 (female) from Gymnocranius grandoculis (Lethrinidae, Perciformes). Two species, I. novaecaledoniensis and A. nasonis, are redescribed based on light microscopical (LM) and scanning electron microscopical (SEM) examinations, the latter used in these species for the first time. Morphological data on the specimen of A. tridentatum from the new host species are provided. Philometra sp. (from E. maculatus) most probably represents a new gonad-infecting species of this genus. The newly established genus Ichthyofilaroides n. gen. is characterized mainly by the presence of a small buccal capsule and by the number and distribution of cephalic papillae in the female; it is the sixth genus in the Guyanemidae.
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Kachamakova, Maria, Yasen Mutafchiev, Pavel N. Nikolov, and Yordan Koshev. "Conservation of Host, Translocation of Parasites—Monitoring of Helminths during Population Reinforcement of the European Ground Squirrel (Spermophilus citellus)." Diversity 15, no. 2 (February 13, 2023): 266. http://dx.doi.org/10.3390/d15020266.
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Gastrointestinal helminth parasites can be transferred during conservation translocations and impact their outcome. The current study applied non-invasive coprological sampling to investigate the helminth infection rates and dynamics in translocated and resident European ground squirrels, during and after a population reinforcement. The FLOTAC method was calibrated and applied for the first time for the target species. In the studied coprological samples, helminth eggs belonging to Acanthocephala and Nematoda were found; the latter were morphologically identified as belonging to the families Capillariidae (Enoplida) and Trichostrongylidae (Strongylida) and superfamily Spiruroidea (Spirurida). The overall helminth prevalence and their diversity were higher in the donor colony compared to the resident one before the reinforcement. Pronounced seasonal dynamics in the parasite prevalence and diversity were observed, and their values were considerably lower in spring than in summer in both translocated and resident hosts. A year after the start of the translocation, the helminth prevalence and number of species detected in the reinforced colony had increased significantly. This is in accordance with epidemiological models and other empirical studies that predict a positive relationship between the population density of a host and the prevalence and species richness of parasites.
Dissertations / Theses on the topic "Spirurida"
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Barros, Juliana São Luiz de. "Taxonomia morfológica e filogenia molecular de Physaloptera (Nematoda: spirurida)." reponame:Repositório Institucional da FIOCRUZ, 2015. https://www.arca.fiocruz.br/handle/icict/14233.
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Previous issue date: 2015Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ, Brasil
Os nematoideos pertencentes ao gênero Physaloptera estão incluídos na ordem Spirurida e caracterizam-se por possuir a extremidade anterior com simetria bilateral. O gênero Physaloptera tem como espécie tipo P. clausa parasito de Erinaceus europeus. No Brasil, Vaz e Pereira (1935) encontrou Physaloptera bispiculata no estômago de um roedor selvagem Nectomys squamipes Brants, 1827 (rato d\2019água) no estado de São Paulo, Brasil. Esta espécie foi posteriormente relatada parasitando Sigmodon hispidus, Cynomys ludovicianus e Ondatra zibethicus. As limitações das características morfológicas para identificação taxonômica, as dificuldades em analisar o ciclo de vida completo e seus hospedeiros alternativos, tem suscitado o uso de técnicas moleculares como instrumento de auxílio na taxonomia. Neste trabalho foi descrita uma nova espécie de Physaloptera coletada parasitando o estômago do roedor Cerradomys subflavus (Cricetidae: Sigmodontinae) coletado Serra da Canastra, Minas Gerais, Brasil (20°13\201928.30\201DS; 46°30\201939.20\201DO). A espécie foi caracterizada através das técnicas morfológicas (ML e MEV) e histológicas. Além disso, a filogenia foi estudada do gênero através de sequências moleculares do gene 18S rRNA e MT-COI 1 produzindo sequências para as espécies P. bispiculata parasita do roedor Nectomys squamipes, P. turgida 1 parasita do marsupial Didelphis aurita, P. mirandai 1 e 2 parasita do marsupial Metachirus nudicaudatus, P. galvaoi parasita do roedor Cerradomys subflavus, P. retusa parasita do réptil Tupinambis teguixin, Protospirura numidica 1 parasita do roedor Oxymycterus dasythricthus, P. numidica 2 parasita do roedor Oxymycterus delator, Physocephalus lassancei parasita do roedor Thrichomys fosteri, Pterigodermatites jagerskioldi parasito de Thylamys macrurus e Gnatostoma turgidum parasito de Philander opossum Todos os nematoides utilizados foram coletados do estômago e identificados por ML. As análises morfológicas por ML e MEV revelaram a presença de dimorfismo sexual com as exemplares fêmeas maiores que os macho, extremidade cefálica com abertura bucal com dois grandes pseudolábios laterais, cada um com dente tripartite semicircular de pontas desiguais (dois arredondados e um pontiagudo) e um único grande dente triangular, um par pseudodentes na borda externa lateral de cada lábio e duas papilas em cada lábio. As análises filogenéticas dentro do gênero Physaloptera revelaram um monofiletismo sugerindo uma rápida e simultânea diversificação de espécies. As observações histológicas contribuíram também com novas informações da constituição celular/ tecidual e da biologia dos nematódeos. Sendo assim, a combinação dos métodos morfológicos, moleculares e histológicos apresentaram resultados satisfatórios para descrição de espécies, caracterização do gênero Physaloptera
Abstract: Nematodes belonging to the genus Physaloptera are included in the order Spirurida, and are characterized by having anterior end provided with bilateral symmetry. The genus Physaloptera present as type species P. clausa parasite of Erinaceus europeus. In Brazil, Vaz and Pereira (1935) found Physaloptera bispiculata in the stomach of the rodent Nectomys squamipes Brants, 1827 (water rat) in São Paulo, Brazil. Later, this species was reported parasitizing Sigmodon hispidus, Cynomys ludovicianus and Ondatra zibethicus. The limitations of the morphological features for taxonomic identification, the difficulties to study the complete life cycle and their alternatives hosts, has favored the use of molecular techniques as a tool for solving these questions. This present study describes a new species of Physaloptera of stomach from the rodent Cerradomys subflavus (Cricetidae: Sigmodontinae) collected from Serra da Canastra, Minas Gerais, Brasil (20°13\201928.30\201DS; 46°30\201939.20\201DO). The species was characterized by morphological techniques (ML and SEM) and histological. Furthermore, phylogeny of the genus was performed through molecular sequences of region 18S rRNA and MT-CO 1 producing sequences for the species P. bispiculata rodent parasite of Nectomys squamipes, P. turgida parasite of marsupial Didelphis aurita, P. mirandai 1 and 2 parasite of marsupial Metachirus nudicaudatus, P. galvaoi parasite of the rodent Cerradomys subflavus, P. retusa parasite of reptile Tupinambis teguixin, Protospirura numidica 1 parasite of rodent Oxymycterus dasythricthus, P. numidica 2 parasite of rodent Oxymycterus delator, Physocephalus lassancei parasite of rodent Thrichomys fosteri, Pterigodermatites jagerskioldi parasite of Thylamys macrurus and Gnatostoma turgidum parasite of Philander opossum All nematodes used were collected from the stomach and identified by ML. Morphological analysis by ML and SEM revealed the presence of sexual dimorphism presenting females larger than the male cephalic end. Oral opening with two large lateral, semicircular pseudolabia, each bearing three internal lateral teeth, forming a tripartite structure and single large external lateral triangulate tooth. Phylogenetic analyzes within the Physaloptera genus revealed a monophyletism suggesting a rapid and simultaneous species diversification. The histological observations also contribute to new information of cell / tissue formation and biology of nematodes. So the combination of morphological, molecular and histological methods showed satisfactory results for describing species, characterization of the Physaloptera genus
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Dian, Rebekah Lynn. "Vector Competence of Northern California Mosquitoes for Dirofilaria immitis (Spirurida: Onchocercidae)." Scholarly Commons, 2018. https://scholarlycommons.pacific.edu/uop_etds/3543.
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Dirofilaria immitis, commonly known as dog heartworm, is a dangerous filarial nematode that is transmitted by a mosquito vector. Although this parasite is historically localized to regions closer to the equator, the last few decades have experienced an increase in the amount of dog heartworm cases in Northern California, most notably in Lake and San Joaquin Counties. The primary vector of D. immitis in Northern California is Aedes sierrensis, but it is not prevalent enough in some counties to explain the increase in infections. Because of this, more prevalent and abundant species should be assessed for their ability to transmit heartworm. Culex pipiens complex (wild) and Culiseta incidens (laboratory-raised colonies) were chosen as potential vectors during this study due to their ability to meet several key vector criteria, their relative abundance in the areas of interest, and the fact that they habitually take bloodmeals from domestic dogs. Additionally, Ae. sierrensis colonies were used in this study, based on previous knowledge that they are highly competent vectors. Female mosquitoes were infected with 2.5, 5, or 10 mff/ul of D. immitis-infected blood, and decapitated at 15, 18, and 21 days post-infection. Mosquitoes were subsequently tested via qPCR for the presence and relative quantification of D. immitis DNA. We found that Ae. sierrensis and Cx. pipiens complex were both able to support the development of D. immitis to its infective stage, while Cs. incidens was not a competent vector. We also concluded that including a standard curve of known amounts of D. immitis larvae makes it possible to approximate the intensity of the infection in the mosquito. The identification of these important vectors, and the ability to assess infection intensity, may be helpful in the continued vector control efforts in Northern California and beyond.
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Kurosaka, Jeffrey Allan. "Vector Competence of Aedes sierrensis and Culex pipiens complex (Diptera: Culicidae) for Dirofilaria immitis (Spirurida: Onchocercidae) in Northern California." Scholarly Commons, 2017. https://scholarlycommons.pacific.edu/uop_etds/2979.
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Dirofilaria immitis Leidy (dog heartworm) is a life-threatening parasite transmitted by mosquitoes to domestic dogs. Endemic in the eastern United States, cases have become more prevalent over the last few decades. While prevalence in California is generally low, Lake and San Joaquin Counties have reported rates comparable to the East Coast at 3.73% and 0.71%(CAPC 2017), respectively. Aedes sierrensis is thought to be responsible for transmission in California, but in some cases, it exists in inadequate quantities and temporal ranges to explain parasite activity. Based on Huang et al. (2013) and Tran (2016), bloodfeeding patterns, and other vector criteria, Culex pipiens complex and Culiseta incidens were chosen to evaluate for vector competence. Female field-caught mosquitoes were reared, infected (2.5-5 mff/μl), and decapitated at 15, 18, or 21 days post infection (dpi). Cs. incidens was reluctant to feed using an artificial feeding system and will require additional trials. On the contrary, trials on Ae. sierrensis and Cx. pipiens complex were both completed successfully. Both species were determined to be competent vectors of D. immitis. Based on our findings, more than half of Ae. sierrensis females produced emerging L3s by 21 dpi, while Cx. pipiens complex never produced L3s in more than 5% of females. In conjunction with other factors such as the detection of D. immitis in wild mosquitoes, host-seeking preferences for domestic dogs, and appropriate temporal overlap, this suggests that both Ae. sierrensis and Cx. pipiens complex may play central roles in Lake or San Joaquin Counties, CA when abundant. Targeted control efforts are necessary to reduce the incidence of canine heartworm in these areas. While Lake and San Joaquin Counties, CA were the focus of this study, our results may be applicable to the western United States when these species are relevant.
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ČERNOTÍKOVÁ, Eva. "Molekulární fylogeneze vybraných druhů rybích hlístic podřádu Spirurina na bázi SSU rRNA genů." Master's thesis, 2010. http://www.nusl.cz/ntk/nusl-53252.
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Nematodes contain species parasitic in freshwater, brackish-water and marine fishes. Some of them are highly pathogenic and are known to be agens of serious disease of fish with economic importance. The present classification based on morphology and life-cycles is unsatisfactory and it is necessary to incorporate the new molecular phylogenies into a classification system of nematodes. This work is aimed to assess phylogenetic relationships inferred from SSU rRNA gene sequences within "clade III" (suborder Spirurina sensu De Ley and Blaxter (2002)), especially among representatives of spirurid nematodes parazitizing fishes.
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WIJOVÁ, Martina. "Evolutionary relationships of Spirurina (Nematoda: Chromadorea: Rhabditida) with special emphasis on dracunculoid nematodes inferred from SSU rRNA gene sequences." Master's thesis, 2006. http://www.nusl.cz/ntk/nusl-44701.
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Martins, Ana Isabel Pereira. "A survey of gastrointestinal parasites and trichinella spp. in wild carnivores of Portugal." Master's thesis, 2018. http://hdl.handle.net/10400.26/24466.
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Currently, mainly due to anthropogenic factors, there are ecological changes that allow a greater proximity of the wildlife to urban areas, increasing the contact between domestic animals, wild animals and humans. At the same time, the occurrence of zoonosis having wild animals as hosts is a major public health problem, affecting the whole world. The concept of the One Health underlined the idea that it is only by giving equal importance to animal, environmental and human health that a balanced and holistically healthy ecosystem can be achieved. Thus, the aim of the present study was to assess the prevalence and the burden of gastrointestinal helminth fauna and the presence of Trichinella spp. in wild carnivores from Portugal. For this purpose, faecal and muscular samples of 16 eurasian badgers, 10 genets, 9 stone martens and only faecal samples of 35 foxes were collected in a wildlife rescue centre. The faecal samples were analysed using Mini-Flotac method and the muscles by artificial digestion method. Of the 70 faecal samples in 40 (57.1%) gastrointestinal parasites have been found. The most frequent parasites were those of the family Ancylostomatidae (24.2%), followed by Capillaria spp. (22.8%) and Toxocara spp. (22.8%). Parasites of the families Spiruridae, Oxyuridae and Taeniidae and the species Toxascaris leonina and Alaria alata were also found. Capillaria spp. and badgers reached the higher burden. Trichinella spp. was not identified in any pool sample. It was found that neither the species, nor the age, nor the gender of the animals influenced the burden. The study showed that, in Portugal as in other European countries, hookworms and Toxocara spp. are the main danger to animal and public health, since their prevalence is very high in synanthropic animals, like foxes. Trichinella spp. has not been identified. Nevertheless, more representative parasitological studies should be carried out in order to draw more conclusions about the current situation, especially with respect to Trichinella spp..Nos dias de hoje, principalmente devido a fatores antropogénicos, existem mudanças ecológicas que permitem uma maior proximidade entre os animais selvagens e as áreas urbanas, o que leva a um maior contacto entre animais domésticos, animais selvagens e o Homem. A ocorrência de doenças zoonóticas, nomeadamente parasitárias, tendo os animais selvagens como hospedeiros é um problema de saúde pública disseminado pelo mundo. O conceito “One Health” veio sublinhar a ideia de que só dando igual importância à saúde animal, ambiental e humana é que é possível criar um ecossistema equilibrado e holisticamente saudável. Assim, os objetivos do presente estudo foram: avaliar a prevalência e a carga parasitária da helmintofauna gastrointestinal e avaliar a presença de Trichinella spp. em carnívoros selvagens de Portugal. Para este fim recolhemos amostras fecais e musculares de 16 texugos euroasiáticos, 10 ginetas e 9 fuínhas e apenas amostras fecais de 35 raposas num centro de recuperação de animais selvagens. As amostras fecais foram analisadas através do método Mini-FLOTAC e as musculares através do método de digestão artificial. Este será o primeiro estudo com carnívoros selvagens usando o método Mini-FLOTAC. Em 40 das 70 amostras fecais recolhidas (57,1%) foram identificadas formas parasitárias. As formas parasitárias mais prevalentes foram os ancilostomatídeos (Ancylostomatidae) (24,2%), seguidos dos géneros Capillaria (22,8%) e Toxocara (22,8%), tendo também sido identificados ovos das famílias Spiruridae, Oxyuridae e Taeniidae e as espécies Toxascaris leonina e Alaria alata. Capillaria spp. e os texugos alcançaram a maior carga parasitária. Não se identificaram larvas de Trichinella spp. Não se verificou relação entre a carga parasitária e a idade, o sexo ou a espécie dos animais. O estudo mostrou que em Portugal, à semelhança de outros países da Europa, ancilostomatídeos e Toxocara spp. são os agentes parasitários mais frequentes nestas espécies, o que, sendo estes potencialmente zoonóticos, pode constituir um perigo para a saúde pública, uma vez que a sua prevalência é muito elevada em animais sinantrópicos como a raposa. No entanto, estudos parasitológicos mais representativos devem ser realizados para que seja possível retirar mais conclusões acerca da situação atual, principalmente no caso de Trichinella spp..
Books on the topic "Spirurida"
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Skryabin, K. I. Key to Parasitic Nematodes: Spirurata and Filariata. Brill Academic Publishers, 1997.
Find full textBook chapters on the topic "Spirurida"
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"7.21 Order Spirurida." In Nematoda, 661–732. De Gruyter, 2013. http://dx.doi.org/10.1515/9783110274257.661.
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Gutierrez, Yezid. "Spirurida-Filariae Of The Lymphatics." In Diagnostic Pathology of Parasitic Infections with Clinical Correlations, 435–56. Oxford University PressNew York, NY, 1999. http://dx.doi.org/10.1093/oso/9780195121438.003.0019.
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Abstract The superfamily Filarioidea is one of the largest superfamilies of the order Spirurida, with genera and species inhabiting almost every tissue, organ system, and body cavity of vertebrates. One family, the Onchocercidae, contains all the genera with species parasitic in humans: Wuchereria, Brugia, Onchocerca, Loa, Mansonella, Dirofilaria, and Meningonema. Two biologic aspects of filariids are as follows: (1) their developmental life cycle, like that of most spiruriids, requires an invertebrate intermediate host, and (2) they produce a microfilaria, an intermediate stage (embryo) between the egg and the fully developed larva. Females lay microfilariae in the tissues or body fluids of the host. In some species, the microfilariae retain the egg membrane, which becomes an elongated envelope for them. In other species, the microfilariae break out and shed the membrane, resulting in sheathed or unsheathed microfilariae, respectively.
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Gutierrez, Yezid. "Spirurida-Dracunculus, Gnathostoma, And Others." In Diagnostic Pathology of Parasitic Infections with Clinical Correlations, 415–32. Oxford University PressNew York, NY, 1999. http://dx.doi.org/10.1093/oso/9780195121438.003.0018.
Full textAbstract:
Abstract The order Spirurida comprises one of the largest groups of nematodes. These worms are characterized biologically by requiring one or more intermediate hosts in their life cycles and morphologically by having a cephalic end with bilateral, symmetric structures and an esophagus divided into two portions, the anterior muscular and the posterior glandular. The members of the order Spirurida occur in the gastrointestinal tract and other tissues; those important in human medicine belong to the following superfamilies (Beaver et al. 1984): Dracunculus medinensisDracunculiasis or Guinea Worm Infection The superfamily Dracunculoidea includes genera and species that usually inhabit the tissues of animals and humans. Two of its genera have species that occur in humans: Dracunculus medinensis, which is by far the most important, and a species of Phylometra, found once in an open lesion of the hand (Deaedorff et al. 1986).
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Gutierrez, Yezid. "Spirurida-Filariae Of The Lungs, Brain, And Eyes." In Diagnostic Pathology of Parasitic Infections with Clinical Correlations, 495–506. Oxford University PressNew York, NY, 1999. http://dx.doi.org/10.1093/oso/9780195121438.003.0021.
Full textAbstract:
Abstract The adults of Dirofilaria immitis occur in the pulmonary arteries of dogs, their natural hosts, and ectopically in other blood vessels. The adults of Meningonema peruzzi are parasites of the brain stem of primates and humans. In addition, both immature and adult filarial worms of humans and animals can occur in the eye of humans. The filariae in these locations are the subject of this chapter. The manifestations and the lesions produced by microfilariae of lymphatic filariae in the lungs (tropical eosinophilia, Chapter 19), the brain (Loaloa, Chapter 20), and the eye (Onchocerca volvulus, Chapter 20) have already been discussed. Filariae of Lungs: Dirofilaria immitis-Pulmonary Dirofilariasis Immature filariae in pulmonary nodules resected because of a clinical diagnosis of carcinoma, mainly in the United States, were reported during the 1940s and 1950s. The review of these cases determined that D. immitis, the dog heartworm, is the agent responsible for the infection (Beaver, Orihel, 1965).
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Gutierrez, Yezid. "Spirurida-Filariae Of The Subcutaneous Tissues And Body Cavities." In Diagnostic Pathology of Parasitic Infections with Clinical Correlations, 457–94. Oxford University PressNew York, NY, 1999. http://dx.doi.org/10.1093/oso/9780195121438.003.0020.
Full textAbstract:
Abstract The filariids of the subcutaneous tissues and body cavities of humans are species of the genera Onchocerca, Loa, and Mansonella, which are natural parasites in humans, and of Dirofilaria, several species of which produce zoonotic infections. One species, D. immitis, occurs both in the skin as immature worms and in the pulmonary arteries (see Chapter 21 ). In human infections with Dirofilaria the worms generally do not attain maturity, and no infection becomes patent (i.e., no patients develop microfilaremia). The most important species of this group is 0. volvulus because of the morbidity it produces in endemic areas. Infections with zoonotic Onchocerca have also been described. Onchocerca-Onchocerciasis The genus Onchocerca has one species found in humans, 0. volvulus, and several other species that occur naturally in wild and domestic animals. Animals infected naturally with 0. volvulus have been a spider monkey and a gorilla; experimentally, the chimpanzee is a good host (Duke, 1962). This makes 0. volvulus almost exclusively a parasite of humans. The main morphologic characteristic of the genus is the presence of external transverse ridges and internal striations in the cuticle. These characteristics are useful in identifying Onchocerca in longitudinal and oblique sections of the parasite in tissues. Biologically, 0. volvulus is characterized by microfilariae that inhabit the skin and by having a fly as its intermediate host. The importance of Onchocerca as a pathogen lies in the capacity of the microfilariae to produce severe forms of dermititis and blindness due to their presence in the skin and their ability to invade the cornea and enter the eye.
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Bussaratid, Valai, and Pravan Suntharasamai. "Gnathostomiasis." In Oxford Textbook of Medicine, 1182–84. Oxford University Press, 2010. http://dx.doi.org/10.1093/med/9780199204854.003.070907_update_001.
Full textAbstract:
Gnathostomiasis is an extraintestinal infection with larval or immature nematodes of the genus Gnathostoma (order Spirurida), the most common mode of human infection being consumption of undercooked freshwater fish. Clinical manifestations include recurrent cutaneous migratory swellings (common), creeping eruption (rare), and neurological deficits (occasional). Definitive diagnosis is by identification of the worm in surgical specimens; serological testing for antibody against gnathostoma antigen can confirm a presumptive diagnosis. Treatment of choice is albendazole or if possible, surgical removal of the worm in accessible areas and when the parasite can be located. Prevention is by avoiding all dishes that contain raw or poorly cooked flesh of animals or fish in or imported from endemic areas....
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Juan-Sallés, Carles, and Michael M. Garner. "Avian Spirurids." In Fowler's Zoo and Wild Animal Medicine Current Therapy, Volume 9, 471–80. Elsevier, 2019. http://dx.doi.org/10.1016/b978-0-323-55228-8.00067-9.
Full textConference papers on the topic "Spirurida"
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Ataev, A. M., M. M. Zubairova, and N. T. Karsakov. "BIODIVERSITY OF HELMINTHS OF THE DAGHESTANI TUR, CHAMOIS, AND ROE DEER IN THE SOUTH-EAST OF THE NORTH CAUCASUS." In THEORY AND PRACTICE OF PARASITIC DISEASE CONTROL. All-Russian Scientific Research Institute for Fundamental and Applied Parasitology of Animals and Plant – a branch of the Federal State Budget Scientific Institution “Federal Scientific Centre VIEV”, 2023. http://dx.doi.org/10.31016/978-5-6048555-6-0.2023.24.58-61.
Full textAbstract:
The ecosystems of the south-east of the Northern Caspian Sea are inhabited by
three representatives of artiodactyls, namely, the Daghestani (East Caucasian) tur,
the chamois (wild mountain goat) and the roe deer. All three species are under the
state protection and listed in the Red Book. The helminth biodiversity in these
three species of ruminants has been studied for 35 years due to the fact that the
hunting is prohibited, therefore it is very difficult to collect material for research.
The collected material analysis showed that helminth biodiversity in the Daghestani
tur was represented by 20 species, chamois by 16 species, and roe deer by 15 species.
From the trematode and cestode classes, 2 species of F. hepatica, D. lanceatum,
M. expansa, and M. benedeni were recorded. The rest of the fauna was represented
by nematodes including 22 species from the suborder Strongylata, one species of
G. pulchrum from Spirurata and one species of T. ovis from Trichocephalata. The
invasion prevalence (IP) of helminths in the Daghestani tur varied from 3.5 to 14.2%
with the invasion intensity (II) of 1–12 specimens, respectively, in the chamois up
to 8.3% and 2–5 specimens, and in the roe deer 4.1–8.3% and 1–4 specimens. The
largest number of species were represented by the genera Nematodirus, Ostertagia,
and Trichostrongylus.