Epidemiologia e clínica de cães portadores de dirofilariose em espaços urbanos de município do litoral do Paraná e aspectos da histologia de Culex quinquefasciatus Say, 1823 (Diptera, Culicidae)
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFPR |
Texto Completo: | http://hdl.handle.net/1884/27929 |
Resumo: | Abstract: Coastal areas located in the tropics are considered enzootic for Dirofilaria immitis, which has cosmopolitan distribution. The climate may be presented as a favorable condition, owing to the high temperatures and high pluviometric precipitation. These have direct and positive relation with the development of species of Diptera, considered potential vectors, as for instance Culex quinquefasciatus (Culicidae). This research aims at evaluating the prevalence of Dirofilaria immitis in two populations of dogs from an urban area, following the clinic evolution of the animals with dirofilariosis and discussing aspects of the internal morphology of Culex quinquefasciatus. The prevalence of Dirofilaria immitis was examined in two populations of dogs in Guaratuba, Paraná. One population consisted of wandering dogs captured by the Sanitary Vigilance Department of the City Hall. The other population consisted of domiciliary dogs from a district away from the downtown area and deficient in water supplying, water collecting and soil drainage infrastructure. Three methods have been simultaneously used to detect and identify microfilaries: the direct blood smear, the modified Knott’s test and the Snap® Canine Heartworm Antigen Test Kit (IDEXX Laboratories). The clinical evolution of the microfilaremic dogs was performed under different handling conditions: a) a dog under ideal conditions of feeding and shelter, and b) a dog in the care of its owners without appropriate feeding and shelter. The common procedures for both dogs were demonstration of microfilaries in blood films. The dog under ideal conditions was submitted to hemograma, skin and fecal parasitologic exams, radiographic and ultrasonographic thoracic exams, while only necropsy and histopathology were performed in the dog in the care of its owners. For Dirofilaria immitis it was detected a prevalence of 1% positive microfilaremic in the group of dogs captured and a prevalence of 4.2% positive microfilaremic in the group of domiciliary dogs, in which case the results indicated potential for dirofilariosis in the urban area analyzed. Concomitantly, through the direct blood smear and the modified Knott’s test, the prevalence of Dipetalonema sp. was detected, the values of which were 11.6% for the dogs captured and 5.6% for the domiciliary dogs. The clinical evolution of the disease in the microfilaremic dogs demonstrated the same progressive reduction of microfilaremy, although one of the dogs died for causes not related to Dirofilaria immitis. The microscopic study of the internal structures of Culex quinquefasciatus showed that this agent has three defense mechanisms against microfilaries directly related to the middle intestine: the oxihemoglobin crystal formation, the ingested blood coagulation and the peritrofic matrix secretion in a shorter period of time. The dirofilariosis in Guaratuba may be considered a zoonosis of reduced quantitative importance; nevertheless, en considered qualitatively, the positive cases indicate the need of monitoring the dogs and the population of potential vectors, once the area of major prevalence of the disease has some of the necessary elements for the maintenance of dirofilariosis, which are the environmental conditions for the development of the potential vector mosquito and the dogs which bear the disease. |
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Cirio, Silvana MarisSilva, Mario Antônio Navarro da, 1963-Luz, Ennio, 1926-Universidade Federal do Paraná. Setor de Ciencias Biológicas. Programa de Pós-Graduaçao em Ciencias Biológicas (Entomologia)2012-09-03T19:54:01Z2012-09-03T19:54:01Z2012-09-03http://hdl.handle.net/1884/27929Abstract: Coastal areas located in the tropics are considered enzootic for Dirofilaria immitis, which has cosmopolitan distribution. The climate may be presented as a favorable condition, owing to the high temperatures and high pluviometric precipitation. These have direct and positive relation with the development of species of Diptera, considered potential vectors, as for instance Culex quinquefasciatus (Culicidae). This research aims at evaluating the prevalence of Dirofilaria immitis in two populations of dogs from an urban area, following the clinic evolution of the animals with dirofilariosis and discussing aspects of the internal morphology of Culex quinquefasciatus. The prevalence of Dirofilaria immitis was examined in two populations of dogs in Guaratuba, Paraná. One population consisted of wandering dogs captured by the Sanitary Vigilance Department of the City Hall. The other population consisted of domiciliary dogs from a district away from the downtown area and deficient in water supplying, water collecting and soil drainage infrastructure. Three methods have been simultaneously used to detect and identify microfilaries: the direct blood smear, the modified Knott’s test and the Snap® Canine Heartworm Antigen Test Kit (IDEXX Laboratories). The clinical evolution of the microfilaremic dogs was performed under different handling conditions: a) a dog under ideal conditions of feeding and shelter, and b) a dog in the care of its owners without appropriate feeding and shelter. The common procedures for both dogs were demonstration of microfilaries in blood films. The dog under ideal conditions was submitted to hemograma, skin and fecal parasitologic exams, radiographic and ultrasonographic thoracic exams, while only necropsy and histopathology were performed in the dog in the care of its owners. For Dirofilaria immitis it was detected a prevalence of 1% positive microfilaremic in the group of dogs captured and a prevalence of 4.2% positive microfilaremic in the group of domiciliary dogs, in which case the results indicated potential for dirofilariosis in the urban area analyzed. Concomitantly, through the direct blood smear and the modified Knott’s test, the prevalence of Dipetalonema sp. was detected, the values of which were 11.6% for the dogs captured and 5.6% for the domiciliary dogs. The clinical evolution of the disease in the microfilaremic dogs demonstrated the same progressive reduction of microfilaremy, although one of the dogs died for causes not related to Dirofilaria immitis. The microscopic study of the internal structures of Culex quinquefasciatus showed that this agent has three defense mechanisms against microfilaries directly related to the middle intestine: the oxihemoglobin crystal formation, the ingested blood coagulation and the peritrofic matrix secretion in a shorter period of time. The dirofilariosis in Guaratuba may be considered a zoonosis of reduced quantitative importance; nevertheless, en considered qualitatively, the positive cases indicate the need of monitoring the dogs and the population of potential vectors, once the area of major prevalence of the disease has some of the necessary elements for the maintenance of dirofilariosis, which are the environmental conditions for the development of the potential vector mosquito and the dogs which bear the disease.application/pdfEntomologiaCulexDirofilariose caninaEpidemiologia e clínica de cães portadores de dirofilariose em espaços urbanos de município do litoral do Paraná e aspectos da histologia de Culex quinquefasciatus Say, 1823 (Diptera, Culicidae)info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisporreponame:Repositório Institucional da UFPRinstname:Universidade Federal do Paraná (UFPR)instacron:UFPRinfo:eu-repo/semantics/openAccessORIGINALR - T - SILVANA MARIS CIRIO.pdfapplication/pdf5558054https://acervodigital.ufpr.br/bitstream/1884/27929/1/R%20-%20T%20-%20SILVANA%20MARIS%20CIRIO.pdfda616efd1b3558212f01b1cc8212a07eMD51open accessTEXTR - T - SILVANA MARIS CIRIO.pdf.txtR - T - SILVANA MARIS CIRIO.pdf.txtExtracted Texttext/plain274184https://acervodigital.ufpr.br/bitstream/1884/27929/2/R%20-%20T%20-%20SILVANA%20MARIS%20CIRIO.pdf.txt4dbc4dc1e52f3ada5e684fade41d25e9MD52open accessTHUMBNAILR - T - SILVANA MARIS CIRIO.pdf.jpgR - T - SILVANA MARIS CIRIO.pdf.jpgGenerated Thumbnailimage/jpeg1237https://acervodigital.ufpr.br/bitstream/1884/27929/3/R%20-%20T%20-%20SILVANA%20MARIS%20CIRIO.pdf.jpga658d2f12d3bc5385b7075fc2cc7ee12MD53open access1884/279292016-04-07 04:05:13.643open accessoai:acervodigital.ufpr.br:1884/27929Repositório de PublicaçõesPUBhttp://acervodigital.ufpr.br/oai/requestopendoar:3082016-04-07T07:05:13Repositório Institucional da UFPR - Universidade Federal do Paraná (UFPR)false |
dc.title.pt_BR.fl_str_mv |
Epidemiologia e clínica de cães portadores de dirofilariose em espaços urbanos de município do litoral do Paraná e aspectos da histologia de Culex quinquefasciatus Say, 1823 (Diptera, Culicidae) |
title |
Epidemiologia e clínica de cães portadores de dirofilariose em espaços urbanos de município do litoral do Paraná e aspectos da histologia de Culex quinquefasciatus Say, 1823 (Diptera, Culicidae) |
spellingShingle |
Epidemiologia e clínica de cães portadores de dirofilariose em espaços urbanos de município do litoral do Paraná e aspectos da histologia de Culex quinquefasciatus Say, 1823 (Diptera, Culicidae) Cirio, Silvana Maris Entomologia Culex Dirofilariose canina |
title_short |
Epidemiologia e clínica de cães portadores de dirofilariose em espaços urbanos de município do litoral do Paraná e aspectos da histologia de Culex quinquefasciatus Say, 1823 (Diptera, Culicidae) |
title_full |
Epidemiologia e clínica de cães portadores de dirofilariose em espaços urbanos de município do litoral do Paraná e aspectos da histologia de Culex quinquefasciatus Say, 1823 (Diptera, Culicidae) |
title_fullStr |
Epidemiologia e clínica de cães portadores de dirofilariose em espaços urbanos de município do litoral do Paraná e aspectos da histologia de Culex quinquefasciatus Say, 1823 (Diptera, Culicidae) |
title_full_unstemmed |
Epidemiologia e clínica de cães portadores de dirofilariose em espaços urbanos de município do litoral do Paraná e aspectos da histologia de Culex quinquefasciatus Say, 1823 (Diptera, Culicidae) |
title_sort |
Epidemiologia e clínica de cães portadores de dirofilariose em espaços urbanos de município do litoral do Paraná e aspectos da histologia de Culex quinquefasciatus Say, 1823 (Diptera, Culicidae) |
author |
Cirio, Silvana Maris |
author_facet |
Cirio, Silvana Maris |
author_role |
author |
dc.contributor.other.pt_BR.fl_str_mv |
Silva, Mario Antônio Navarro da, 1963- Luz, Ennio, 1926- Universidade Federal do Paraná. Setor de Ciencias Biológicas. Programa de Pós-Graduaçao em Ciencias Biológicas (Entomologia) |
dc.contributor.author.fl_str_mv |
Cirio, Silvana Maris |
dc.subject.por.fl_str_mv |
Entomologia Culex Dirofilariose canina |
topic |
Entomologia Culex Dirofilariose canina |
description |
Abstract: Coastal areas located in the tropics are considered enzootic for Dirofilaria immitis, which has cosmopolitan distribution. The climate may be presented as a favorable condition, owing to the high temperatures and high pluviometric precipitation. These have direct and positive relation with the development of species of Diptera, considered potential vectors, as for instance Culex quinquefasciatus (Culicidae). This research aims at evaluating the prevalence of Dirofilaria immitis in two populations of dogs from an urban area, following the clinic evolution of the animals with dirofilariosis and discussing aspects of the internal morphology of Culex quinquefasciatus. The prevalence of Dirofilaria immitis was examined in two populations of dogs in Guaratuba, Paraná. One population consisted of wandering dogs captured by the Sanitary Vigilance Department of the City Hall. The other population consisted of domiciliary dogs from a district away from the downtown area and deficient in water supplying, water collecting and soil drainage infrastructure. Three methods have been simultaneously used to detect and identify microfilaries: the direct blood smear, the modified Knott’s test and the Snap® Canine Heartworm Antigen Test Kit (IDEXX Laboratories). The clinical evolution of the microfilaremic dogs was performed under different handling conditions: a) a dog under ideal conditions of feeding and shelter, and b) a dog in the care of its owners without appropriate feeding and shelter. The common procedures for both dogs were demonstration of microfilaries in blood films. The dog under ideal conditions was submitted to hemograma, skin and fecal parasitologic exams, radiographic and ultrasonographic thoracic exams, while only necropsy and histopathology were performed in the dog in the care of its owners. For Dirofilaria immitis it was detected a prevalence of 1% positive microfilaremic in the group of dogs captured and a prevalence of 4.2% positive microfilaremic in the group of domiciliary dogs, in which case the results indicated potential for dirofilariosis in the urban area analyzed. Concomitantly, through the direct blood smear and the modified Knott’s test, the prevalence of Dipetalonema sp. was detected, the values of which were 11.6% for the dogs captured and 5.6% for the domiciliary dogs. The clinical evolution of the disease in the microfilaremic dogs demonstrated the same progressive reduction of microfilaremy, although one of the dogs died for causes not related to Dirofilaria immitis. The microscopic study of the internal structures of Culex quinquefasciatus showed that this agent has three defense mechanisms against microfilaries directly related to the middle intestine: the oxihemoglobin crystal formation, the ingested blood coagulation and the peritrofic matrix secretion in a shorter period of time. The dirofilariosis in Guaratuba may be considered a zoonosis of reduced quantitative importance; nevertheless, en considered qualitatively, the positive cases indicate the need of monitoring the dogs and the population of potential vectors, once the area of major prevalence of the disease has some of the necessary elements for the maintenance of dirofilariosis, which are the environmental conditions for the development of the potential vector mosquito and the dogs which bear the disease. |
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2012 |
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2012-09-03T19:54:01Z |
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2012-09-03 |
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