Borrelia spp. in ticks and birds from a protected urban area in Buenos Aires city, Argentina
This study was aimed to know epidemiological aspects of Borrelia spp. in a protected urban area of Buenos Aires city, Argentina, where thousands of people visit this area for recreational purposes. Ticks were collected from vegetation, birds and dogs. Three hundred and forty birds belonging to 43 sp...
| Autores principales: | , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
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Elsevier
2019
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/6039 https://www.sciencedirect.com/science/article/pii/S1877959X19302420?via%3Dihub https://doi.org/10.1016/j.ttbdis.2019.101282 |
| _version_ | 1855035603558596608 |
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| author | Cicuttin, Gabriel L. De Salvo, María Nazarena Venzal, José Manuel Nava, Santiago |
| author_browse | Cicuttin, Gabriel L. De Salvo, María Nazarena Nava, Santiago Venzal, José Manuel |
| author_facet | Cicuttin, Gabriel L. De Salvo, María Nazarena Venzal, José Manuel Nava, Santiago |
| author_sort | Cicuttin, Gabriel L. |
| collection | INTA Digital |
| description | This study was aimed to know epidemiological aspects of Borrelia spp. in a protected urban area of Buenos Aires city, Argentina, where thousands of people visit this area for recreational purposes. Ticks were collected from vegetation, birds and dogs. Three hundred and forty birds belonging to 43 species, 41 genera, 18 families and six orders were captured (90.3% corresponded to the order Passeriformes). One hundred and twenty ticks were collected from 47 birds (13.8%) belonging to 10 species (23.2%), all of them from to the order Passeriformes (Emberizidae, Furnariidae, Parulidae, Thraupidae, Troglodytidae, Turdidae). Ticks were identified as Ixodes auritulus (56 larvae, 44 nymphs and 8 females) and Amblyomma aureolatum (1 larva and 11 nymphs).
One thousand and ninety-one ticks collected from vegetation, 100 ticks collected from birds, and 89 ticks from dogs were tested for Borrelia infection by PCR trials targeting the flagellin (fla) and 16S rRNA genes. In addition, 101 blood and 168 tissue samples from birds were analyzed. Nine nymphs of A. aureolatum (2.1%) and four nymphs of I. auritulus (0.7%) collected from vegetation were positive. Five nymphs of A. aureolatum (45.4%), and five pools of larvae (minimum infection rate 13.5%), 18 nymphs (40.9%) and one female (14.3%) of I. auritulus collected on birds were also positive. The remaining samples were negative. The phylogenetic tree generated with fla sequences shows that seven of the eight different haplotypes of Borrelia detected in I. auritulus conform an independent lineage within the Borrelia burgdorferi sensu lato complex together with sequences of Borrelia sp. detected in I. auritulus from Canada and Uruguay. The fla sequences of Borrelia obtained from A. aureolatum and one sequence of a single specimen of I. auritulus conform a phylogenetic group with Borrelia turcica, Borrelia sp. isolated from a tortoise in Zambia, Borrelia spp. detected in Amblyomma maculatum from USA and Amblyomma longirostre from Brazil. The epidemiological risk that implies the infection with Borrelia genospecies associated with I. auritulus seems to be low because this tick is not aggressive to humans, but it helps to maintain borrelial spirochetes in the enzootic transmission cycles. The pathogenicity to humans of the Borrelia found in A. aureolatum is unknown; however, adults of this tick species are known to bite humans. This is the first report of the presence of Borrelia in A. aureolatum. Further investigations are necessary to know the risk of transmission of borreliosis by hard ticks in the study area. |
| format | info:ar-repo/semantics/artículo |
| id | INTA6039 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA60392019-10-03T13:23:47Z Borrelia spp. in ticks and birds from a protected urban area in Buenos Aires city, Argentina Cicuttin, Gabriel L. De Salvo, María Nazarena Venzal, José Manuel Nava, Santiago Borrelia Metastigmata Pájaros Argentina Buenos Aires Zonas Urbanas Birds Urban Areas Ticks Garrapatas This study was aimed to know epidemiological aspects of Borrelia spp. in a protected urban area of Buenos Aires city, Argentina, where thousands of people visit this area for recreational purposes. Ticks were collected from vegetation, birds and dogs. Three hundred and forty birds belonging to 43 species, 41 genera, 18 families and six orders were captured (90.3% corresponded to the order Passeriformes). One hundred and twenty ticks were collected from 47 birds (13.8%) belonging to 10 species (23.2%), all of them from to the order Passeriformes (Emberizidae, Furnariidae, Parulidae, Thraupidae, Troglodytidae, Turdidae). Ticks were identified as Ixodes auritulus (56 larvae, 44 nymphs and 8 females) and Amblyomma aureolatum (1 larva and 11 nymphs). One thousand and ninety-one ticks collected from vegetation, 100 ticks collected from birds, and 89 ticks from dogs were tested for Borrelia infection by PCR trials targeting the flagellin (fla) and 16S rRNA genes. In addition, 101 blood and 168 tissue samples from birds were analyzed. Nine nymphs of A. aureolatum (2.1%) and four nymphs of I. auritulus (0.7%) collected from vegetation were positive. Five nymphs of A. aureolatum (45.4%), and five pools of larvae (minimum infection rate 13.5%), 18 nymphs (40.9%) and one female (14.3%) of I. auritulus collected on birds were also positive. The remaining samples were negative. The phylogenetic tree generated with fla sequences shows that seven of the eight different haplotypes of Borrelia detected in I. auritulus conform an independent lineage within the Borrelia burgdorferi sensu lato complex together with sequences of Borrelia sp. detected in I. auritulus from Canada and Uruguay. The fla sequences of Borrelia obtained from A. aureolatum and one sequence of a single specimen of I. auritulus conform a phylogenetic group with Borrelia turcica, Borrelia sp. isolated from a tortoise in Zambia, Borrelia spp. detected in Amblyomma maculatum from USA and Amblyomma longirostre from Brazil. The epidemiological risk that implies the infection with Borrelia genospecies associated with I. auritulus seems to be low because this tick is not aggressive to humans, but it helps to maintain borrelial spirochetes in the enzootic transmission cycles. The pathogenicity to humans of the Borrelia found in A. aureolatum is unknown; however, adults of this tick species are known to bite humans. This is the first report of the presence of Borrelia in A. aureolatum. Further investigations are necessary to know the risk of transmission of borreliosis by hard ticks in the study area. Ticks and tick-borne diseases 10 (6) : 101282. (October 2019) EEA Rafaela Fil: Cicuttin, Gabriel L. Instituto de Zoonosis Luis Pasteur; Argentina Fil: De Salvo, María Nazarena. Instituto de Zoonosis Luis Pasteur; Argentina Fil: Venzal, José Manuel. Universidad de la República. Facultad de Veterinaria. Laboratorio de Vectores y Enfermedades Transmitidas; Uruguay Fil: Nava, Santiago. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina 2019-10-03T13:15:07Z 2019-10-03T13:15:07Z 2019-10 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/6039 https://www.sciencedirect.com/science/article/pii/S1877959X19302420?via%3Dihub 1877-959X https://doi.org/10.1016/j.ttbdis.2019.101282 eng info:eu-repo/semantics/restrictedAccess application/pdf Buenos Aires (inhabited place) Elsevier |
| spellingShingle | Borrelia Metastigmata Pájaros Argentina Buenos Aires Zonas Urbanas Birds Urban Areas Ticks Garrapatas Cicuttin, Gabriel L. De Salvo, María Nazarena Venzal, José Manuel Nava, Santiago Borrelia spp. in ticks and birds from a protected urban area in Buenos Aires city, Argentina |
| title | Borrelia spp. in ticks and birds from a protected urban area in Buenos Aires city, Argentina |
| title_full | Borrelia spp. in ticks and birds from a protected urban area in Buenos Aires city, Argentina |
| title_fullStr | Borrelia spp. in ticks and birds from a protected urban area in Buenos Aires city, Argentina |
| title_full_unstemmed | Borrelia spp. in ticks and birds from a protected urban area in Buenos Aires city, Argentina |
| title_short | Borrelia spp. in ticks and birds from a protected urban area in Buenos Aires city, Argentina |
| title_sort | borrelia spp in ticks and birds from a protected urban area in buenos aires city argentina |
| topic | Borrelia Metastigmata Pájaros Argentina Buenos Aires Zonas Urbanas Birds Urban Areas Ticks Garrapatas |
| url | http://hdl.handle.net/20.500.12123/6039 https://www.sciencedirect.com/science/article/pii/S1877959X19302420?via%3Dihub https://doi.org/10.1016/j.ttbdis.2019.101282 |
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