Publication: Estudios sobre la infección por Thelazia callipaeda en el perro y el gato y su vector Phortica variegata en España
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2022-02-23
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Universidad Complutense de Madrid
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Abstract
Thelazia callipaeda es un nematodo responsable de infecciones oculares en una amplia variedad de mamíferos. En Europa el vector competente es una mosca drosófilano picadora, Phortica variegata, que transmite la infección al alimentarse de las secreciones oculares de los hospedadores. La infección por T. callipaeda se considera una zoonosis emergente debido al aumento, en muy pocos años, del número de casos en animales y personas. El objetivo principal de esta Tesis Doctoral ha sido diseñar investigaciones encaminadas a profundizar en el conocimiento de esta parasitosis emergente en el perroy el gato, y de su vector. Para investigar el papel vectorial de P. variegata en la transmisión de T. callipaeda en condiciones naturales, se realizaron muestreos entomológicos en tres zonas geográficas de España. Las moscas capturadas fueron identificadas y diseccionadas para valorar la presencia de larvas de tercer estadio (L3) de T. callipaeda. Mediante disección,se detectaron dos L3 de T. callipaeda, en la proboscis de dos moscas. Además, se procedió al análisis molecular de 371 especímenes procedentes de La Vera, Cáceres, detectando ADN de T. callipaeda en 28 (7,5%)...
Thelazia callipaeda is a nematode responsible for eye infections in a wide range of mammals. In Europe, the competent vector is a non-biting drosophila fly, Phortica variegata, which transmits the parasite by feeding on the host ocular secretions.Thelaziosis is considered an emerging zoonosis due to the increase in the number of cases in animals and people in recent years.The main objective of this Doctoral Thesis was to design studies to broaden the knowledge of the vector of this emerging parasitosis, and its impact on the health of dogs and cats. Entomological samplings were carried out in three geographical areas of Spain toinvestigate the role of P. variegata as a vector in the transmission of T. callipaeda under natural conditions. Flies were captured, identified, and dissected to assess the presence of third-stage larvae (L3) of T. callipaeda. By dissection, two L3 of T. callipaeda were detected in the proboscis of two flies. In addition, 371 specimens from La Vera, Caceres, were analysed by molecular techniques, detecting T. callipaeda DNA in 28 of them (7.5%)...
Thelazia callipaeda is a nematode responsible for eye infections in a wide range of mammals. In Europe, the competent vector is a non-biting drosophila fly, Phortica variegata, which transmits the parasite by feeding on the host ocular secretions.Thelaziosis is considered an emerging zoonosis due to the increase in the number of cases in animals and people in recent years.The main objective of this Doctoral Thesis was to design studies to broaden the knowledge of the vector of this emerging parasitosis, and its impact on the health of dogs and cats. Entomological samplings were carried out in three geographical areas of Spain toinvestigate the role of P. variegata as a vector in the transmission of T. callipaeda under natural conditions. Flies were captured, identified, and dissected to assess the presence of third-stage larvae (L3) of T. callipaeda. By dissection, two L3 of T. callipaeda were detected in the proboscis of two flies. In addition, 371 specimens from La Vera, Caceres, were analysed by molecular techniques, detecting T. callipaeda DNA in 28 of them (7.5%)...
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Tesis inédita de la Universidad Complutense de Madrid, Facultad de Veterinaria, Departamento de Sanidad Animal, leída el 26-11-2021