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Fantozzi MC, Reguera-Gomez M, Beldomenico PM, Mas-Coma S, Bargues MD, Valero MA. Variability of Calodium hepaticum eggs from sigmodontine host species through geometric morphometric analysis. J Helminthol 2022; 96:e75. [PMID: 36250383 DOI: 10.1017/s0022149x22000669] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Calodium hepaticum is a zoonotic nematode with a worldwide distribution. Although the host range of C. hepaticum includes a wide spectrum of mammals (including humans), this parasite is predominantly associated with the families Muridae and Cricetidae. Several Sigmodontinae species from Argentina were found to be infected by C. hepaticum, with a high prevalence in Akodon azarae. The present study focuses on C. hepaticum eggs from natural infection of three species of sigmodontine rodents from Argentina. Eggs were genetically characterized (intergenic 18S rRNA region). The objectives of this work are: (i) to propose a new analytical methodology; and (ii) to morphologically characterize C. hepaticum eggs, from three Sigmodontinae species (A. azarae, Calomys callidus and Oligoryzomys flavescens). Analyses were made by the Computer Image Analysis System based on the new standardized measurements and geometric morphometric tools. The resulting factor maps clearly illustrate global size differences in the parasite eggs from the three Sigmodontinae species analysed. The degree of similarity between egg populations was assessed through pairwise Mahalanobis distances, showing that the largest distances were detected between parasite eggs from C. callidus and O. flavescens. Herein, the phenotypical plasticity of C. hepaticum eggs is shown. Significant positive correlations were obtained between each egg parasite principal component 1 and rodent corporal characteristics: weight; liver weight; rodent length; and rodent body condition. The usefulness of the geometric morphometric analysis in studies of the relationship between C. hepaticum and its host must be highlighted. The high prevalence observed in A. azarae, associated with the wide size range of the parasite eggs evidenced by principal component analysis, suggests A. azarae to be the Sigmodontinae host species that plays the most important role as reservoir host for C. hepaticum in the New World.
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Affiliation(s)
- M C Fantozzi
- Departamento de Parasitología, Facultad de Farmacia, Universidad de Valencia, Burjassot, Valencia, Spain
- Laboratorio de Ecología de Enfermedades, Instituto de Ciencias Veterinarias del Litoral (ICIVET LITORAL), Universidad Nacional del Litoral- CONICET, Esperanza, Santa Fe, Argentina
| | - M Reguera-Gomez
- Departamento de Parasitología, Facultad de Farmacia, Universidad de Valencia, Burjassot, Valencia, Spain
| | - P M Beldomenico
- Laboratorio de Ecología de Enfermedades, Instituto de Ciencias Veterinarias del Litoral (ICIVET LITORAL), Universidad Nacional del Litoral- CONICET, Esperanza, Santa Fe, Argentina
| | - S Mas-Coma
- Departamento de Parasitología, Facultad de Farmacia, Universidad de Valencia, Burjassot, Valencia, Spain
- Consorcio Centro de Investigación Biomédica en Red (CIBER), Área de Enfermedades Infecciosas (CIBERINFEC), ISC III, Madrid, Spain
| | - M D Bargues
- Departamento de Parasitología, Facultad de Farmacia, Universidad de Valencia, Burjassot, Valencia, Spain
- Consorcio Centro de Investigación Biomédica en Red (CIBER), Área de Enfermedades Infecciosas (CIBERINFEC), ISC III, Madrid, Spain
| | - M A Valero
- Departamento de Parasitología, Facultad de Farmacia, Universidad de Valencia, Burjassot, Valencia, Spain
- Consorcio Centro de Investigación Biomédica en Red (CIBER), Área de Enfermedades Infecciosas (CIBERINFEC), ISC III, Madrid, Spain
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Percara A, Quiroga MA, Beldomenico PM, Monje LD. Genetic diversity and geographic distribution of parasitic flies of the Philornis torquans complex in Argentina. Med Vet Entomol 2021; 35:567-579. [PMID: 34129691 DOI: 10.1111/mve.12534] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 05/04/2021] [Accepted: 06/03/2021] [Indexed: 06/12/2023]
Abstract
Philornis Meinert 1890 (Diptera: Muscidae) is a genus of flies that parasitize birds in the Neotropical region. The characteristics of the host-parasite interactions and its consequences may depend on the Philornis species involved, and thus precise identification of these parasites is crucial for the interpretation of ecological and epidemiological studies. However, morphological identification of Argentine Philornis species is elusive while molecular evidence points towards the existence of a complex of cryptic species or lineages undergoing a speciation process, which were named the 'Philornis torquans complex'. Herein the authors extended the current knowledge on the systematics and biogeography of parasitic Philornis flies from Argentina, analysing samples collected in several ecoregions, including the Atlantic Forest, Iberá Wetlands, Open Fields and Grasslands, Espinal, Pampa, Dry Chaco, Humid Chaco, Delta and Paraná River Islands, Monte of Plains and Plateaus. The results of the present study strengthen the evidence on previously described Philornis genotypes using four genetic markers (ITS2, COI, ND6, 12S rRNA). The authors report new patterns of occurrence and describe the presence of a novel genotype of subcutaneous Philornis. In addition, the present study unveils ecological niche differences among genotypes of the Philornis torquans complex in southern South America.
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Affiliation(s)
- A Percara
- Laboratorio de Ecología de Enfermedades, Instituto de Ciencias Veterinarias del Litoral (ICIVET-Litoral), Universidad Nacional del Litoral (UNL), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Esperanza, Argentina
| | - M A Quiroga
- Laboratorio de Ecología de Enfermedades, Instituto de Ciencias Veterinarias del Litoral (ICIVET-Litoral), Universidad Nacional del Litoral (UNL), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Esperanza, Argentina
- The Peregrine Fund, Boise, ID, U.S.A
- Universidad Autónoma de Entre Ríos, Oro Verde, Argentina
| | - P M Beldomenico
- Laboratorio de Ecología de Enfermedades, Instituto de Ciencias Veterinarias del Litoral (ICIVET-Litoral), Universidad Nacional del Litoral (UNL), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Esperanza, Argentina
- Facultad de Ciencias Veterinarias, UNL, Esperanza, Argentina
| | - L D Monje
- Laboratorio de Ecología de Enfermedades, Instituto de Ciencias Veterinarias del Litoral (ICIVET-Litoral), Universidad Nacional del Litoral (UNL), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Esperanza, Argentina
- Facultad de Bioquímica y Ciencias Biológicas, UNL, Santa Fe, Argentina
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Natalini MB, Cuervo PF, Gennuso MS, Romero VL, Jouliá RB, Beldomenico PM, Kowalewski MM. Influence of extraordinary floods on wildlife parasites: the case of gastrointestinal helminths and protozoa of wild canids from the Iberá Ecoregion, Argentina. Parasitol Res 2021; 120:3827-3835. [PMID: 34604932 DOI: 10.1007/s00436-021-07330-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 09/22/2021] [Indexed: 10/20/2022]
Abstract
Parasites are natural components of ecosystems and play a significant role in the dynamics of wild animal populations. Although the environment of parasites is primarily defined by the host, most life cycles involve stages that must endure external conditions. Rainfall and flooding events are important factors that might influence the transport of parasitic stages, altering soil moisture levels, and resulting in a favorable environment for parasite survival and development. We assessed whether an extraordinary flood event modified the occurrence of gastrointestinal parasites (nematodes and protozoa) in wild canids in two protected areas in northern Argentina. From 2016 to 2018, we collected fecal samples of two fox species, Lycalopex gymnocercus and Cerdocyon thous, and examined the presence of nematodes and protozoa. We assessed changes in the occurrence of these parasites after a flood event, while adjusting for potential confounders (i.e., monthly average temperature, season, host species, site). In a second stage of the analysis, we evaluated whether part of the effect was caused by changes in soil moisture, by adding normalized difference water index as an independent variable. We found that the presence of nematodes in foxes was higher after flooding than before flooding, and this association was not explained by changes in the soil moisture. On the other hand, the flood event was not relevant for protozoa. Stronger and long-lasting flood events are expected due to the effect of global warming on El Niño events, and this may increase and intensify the spread of some parasites affecting wildlife, which could also be of public health concern.
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Affiliation(s)
- M B Natalini
- Estación Biológica Corrientes (EBCo), CECOAL, CONICET, Nuestra Señora de Lourdes 1200, 3401, San Cayetano, Corrientes, Argentina.
| | - P F Cuervo
- Laboratorio de Ecología de Enfermedades, Instituto de Ciencias Veterinarias del Litoral (ICIVET Litoral), Universidad Nacional del Litoral - Consejo Nacional de Investigaciones Científicas y Técnicas (UNL-CONICET), RP Kreder 2805, 3080, Esperanza, Santa Fe, Argentina
- Departamento de Parasitología, Facultad de Farmacia, Universidad de Valencia, Av. Vicent Andres Estelles s/n, 46100, Burjassot, Valencia, Spain
| | - M S Gennuso
- Estación Biológica Corrientes (EBCo), CECOAL, CONICET, Nuestra Señora de Lourdes 1200, 3401, San Cayetano, Corrientes, Argentina
| | - V L Romero
- Estación Biológica Corrientes (EBCo), CECOAL, CONICET, Nuestra Señora de Lourdes 1200, 3401, San Cayetano, Corrientes, Argentina
| | - R Bay Jouliá
- Estación Biológica Corrientes (EBCo), CECOAL, CONICET, Nuestra Señora de Lourdes 1200, 3401, San Cayetano, Corrientes, Argentina
| | - P M Beldomenico
- Laboratorio de Ecología de Enfermedades, Instituto de Ciencias Veterinarias del Litoral (ICIVET Litoral), Universidad Nacional del Litoral - Consejo Nacional de Investigaciones Científicas y Técnicas (UNL-CONICET), RP Kreder 2805, 3080, Esperanza, Santa Fe, Argentina
| | - M M Kowalewski
- Estación Biológica Corrientes (EBCo), CECOAL, CONICET, Nuestra Señora de Lourdes 1200, 3401, San Cayetano, Corrientes, Argentina
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Cuervo PF, Percara A, Monje L, Beldomenico PM, Quiroga MA. Environmental variables determining the distribution of an avian parasite: the case of the Philornis torquans complex in South America. Med Vet Entomol 2021; 35:284-292. [PMID: 33112431 DOI: 10.1111/mve.12488] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 10/01/2020] [Accepted: 10/02/2020] [Indexed: 06/11/2023]
Abstract
Philornis flies are the major cause of myiasis in nestlings of Neotropical birds, being of major concern in geographically-restricted and endangered bird species. Despite its relevance for the conservation of birds, there is little information about the environmental dimensions determining Philornis spp. geographical range. By using maximum entropy, we identified for the first time the macro-environmental variables constraining the abiotic niche of the P. torquans complex in South America, and provided a model map of its potential distribution based on environmental suitability. We identified the minimum temperature of the coldest month as the most relevant variable, associated with the largest decrease in habitat suitability in Brazil and northern South America. Furthermore, the mean temperature of the warmest quarter limited suitability mostly along with the Andean range. In addition, humidity and moisture are influential factors in most of Argentina, northern Chile, and coastal Peru. The geographical projection suggests that environments in most of central-eastern Argentina, and in a broad area in central Chile, are suitable for the presence of the P. torquans complex. Besides providing information about the ecology of Philornis spp., this study represents a tool for bird conservation and a reference for future work on the distribution of this genus.
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Affiliation(s)
- P F Cuervo
- Laboratorio de Ecología de Enfermedades, Instituto de Ciencias Veterinarias del Litoral (ICIVET-Litoral), Universidad Nacional del Litoral (UNL)/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Esperanza, Santa Fe, Argentina
| | - A Percara
- Laboratorio de Ecología de Enfermedades, Instituto de Ciencias Veterinarias del Litoral (ICIVET-Litoral), Universidad Nacional del Litoral (UNL)/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Esperanza, Santa Fe, Argentina
| | - L Monje
- Laboratorio de Ecología de Enfermedades, Instituto de Ciencias Veterinarias del Litoral (ICIVET-Litoral), Universidad Nacional del Litoral (UNL)/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Esperanza, Santa Fe, Argentina
| | - P M Beldomenico
- Laboratorio de Ecología de Enfermedades, Instituto de Ciencias Veterinarias del Litoral (ICIVET-Litoral), Universidad Nacional del Litoral (UNL)/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Esperanza, Santa Fe, Argentina
- Facultad de Ciencias Veterinarias, Universidad Nacional del Litoral, Esperanza, Santa Fe, Argentina
| | - M A Quiroga
- Laboratorio de Ecología de Enfermedades, Instituto de Ciencias Veterinarias del Litoral (ICIVET-Litoral), Universidad Nacional del Litoral (UNL)/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Esperanza, Santa Fe, Argentina
- The Peregrine Fund, Boise, ID, U.S.A
- Instituto Tecnológico de Santo Domingo, Santo Domingo, República Dominicana
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Fantozzi MC, Sanchez A, Ciorciari ALS, Peña FE, Canal A, Beldomenico PM. Calodium hepaticum (Trichuroidea: Capillariidae) Infection in Akodon azarae: First Description of Histopathological Lesions in Sigmodontinae. J Parasitol 2019. [DOI: 10.1645/18-127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- M. C. Fantozzi
- Laboratorio de Ecología de Enfermedades, Instituto de Ciencias Veterinarias del Litoral (lCiVet-Lito
| | - A. Sanchez
- Laboratorio de Anatomía Patológica, Facultad de Ciencias Veterinarias del Litoral, Universidad Nacio
| | | | - F. E. Peña
- Laboratorio de Ecología de Enfermedades, Instituto de Ciencias Veterinarias del Litoral (lCiVet-Lito
| | - A. Canal
- Laboratorio de Anatomía Patológica, Facultad de Ciencias Veterinarias del Litoral, Universidad Nacio
| | - P. M. Beldomenico
- Laboratorio de Ecología de Enfermedades, Instituto de Ciencias Veterinarias del Litoral (lCiVet-Lito
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Fantozzi MC, Sanchez A, Ciorciari ALS, Peña FE, Canal A, Beldomenico PM. Calodium hepaticum (Trichuroidea: Capillariidae) Infection In Akodon azarae: First Description of Histopathological Lesions In Sigmodontinae. J Parasitol 2019; 105:75-78. [PMID: 30807714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023] Open
Abstract
Calodium hepaticum (Trichinellida: Capillaridae) is a parasitic nematode of mammals distributed worldwide. Although this parasite can infect the liver of a wide diversity of mammals (including humans), it is mostly associated with Muroidea hosts. Sigmodontinae rodents were recently recognized as important hosts of this parasite in Argentina, but the impact of this parasitism on these hosts has not been established. Here we report results of histopathological analyses of 40 livers of Akodon azarae infected with C. hepaticum. Lesions were classified into 4 categories: level 0, absence of lesions; level 1, with focal granulomatous hepatitis; level 2, presence of multifocal granulomatous hepatitis, fibrosis and focal necrosis with neutrophils, and level 3, absence of intact adult parasites, diffuse distribution, necrosis, and fibrosis. Most samples presented lesions of level 2 (55%), but all categories of lesions were found. This is the first study to describe the lesions caused by C. hepaticum in the liver of Sigmodontinae rodents, and the results suggest that infection by this parasite is costly to A. azarae populations.
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Affiliation(s)
- M C Fantozzi
- 1 Laboratorio de Ecología de Enfermedades, Instituto de Ciencias Veterinarias del Litoral (ICiVet-Litoral), Universidad Nacional del Litoral (UNL)/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Esperanza, Santa Fe, Argentina
| | - A Sanchez
- 2 Laboratorio de Anatomía Patológica, Facultad de Ciencias Veterinarias del Litoral, Universidad Nacional del Litoral (UNL), Esperanza, Santa Fe, Argentina
| | - A L Scartascini Ciorciari
- 2 Laboratorio de Anatomía Patológica, Facultad de Ciencias Veterinarias del Litoral, Universidad Nacional del Litoral (UNL), Esperanza, Santa Fe, Argentina
| | - F E Peña
- 1 Laboratorio de Ecología de Enfermedades, Instituto de Ciencias Veterinarias del Litoral (ICiVet-Litoral), Universidad Nacional del Litoral (UNL)/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Esperanza, Santa Fe, Argentina
| | - A Canal
- 2 Laboratorio de Anatomía Patológica, Facultad de Ciencias Veterinarias del Litoral, Universidad Nacional del Litoral (UNL), Esperanza, Santa Fe, Argentina
| | - P M Beldomenico
- 1 Laboratorio de Ecología de Enfermedades, Instituto de Ciencias Veterinarias del Litoral (ICiVet-Litoral), Universidad Nacional del Litoral (UNL)/Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Esperanza, Santa Fe, Argentina
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Moleón MS, Parachú Marcó MV, Pietrobon EO, Jahn GA, Beldomenico PM, Siroski PA. Corticosterone levels and immunological indices in stressed juvenile broad-snouted caimans. J Zool (1987) 2017. [DOI: 10.1111/jzo.12513] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- M. S. Moleón
- Laboratorio de Ecología de Enfermedades (ICiVet-CONICET-UNL); Esperanza Santa Fe Argentina
- Proyecto Yacaré; Laboratorio de Zoología Aplicada: Anexo Vertebrados (FHUC - UNL/MMA; Santa Fe Argentina
| | - M. V. Parachú Marcó
- Proyecto Yacaré; Laboratorio de Zoología Aplicada: Anexo Vertebrados (FHUC - UNL/MMA; Santa Fe Argentina
- Laboratorio de Biología Celular y Molecular (ICiVet-CONICET-UNL); Esperanza Santa Fe Argentina
| | - E. O. Pietrobon
- Laboratorio de Reproducción y Lactancia CRICYT-CONICET; Mendoza Argentina
| | - G. A. Jahn
- Laboratorio de Reproducción y Lactancia CRICYT-CONICET; Mendoza Argentina
| | - P. M. Beldomenico
- Laboratorio de Ecología de Enfermedades (ICiVet-CONICET-UNL); Esperanza Santa Fe Argentina
| | - P. A. Siroski
- Proyecto Yacaré; Laboratorio de Zoología Aplicada: Anexo Vertebrados (FHUC - UNL/MMA; Santa Fe Argentina
- Laboratorio de Biología Celular y Molecular (ICiVet-CONICET-UNL); Esperanza Santa Fe Argentina
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Saravia‐Pietropaolo MJ, Manzoli DE, Antoniazzi LR, Quiroga MA, Beldomenico PM. Effect of natural brood size variability on growth and survival of thornbird nestlings. J Zool (1987) 2016. [DOI: 10.1111/jzo.12368] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M. J. Saravia‐Pietropaolo
- Laboratorio de Ecología de Enfermedades Instituto de Ciencias Veterinarias del Litoral Universidad Nacional del Litoral – Consejo de Investigaciones Científicas y Técnicas (UNL – CONICET) Esperanza Santa Fe Argentina
| | - D. E. Manzoli
- Laboratorio de Ecología de Enfermedades Instituto de Ciencias Veterinarias del Litoral Universidad Nacional del Litoral – Consejo de Investigaciones Científicas y Técnicas (UNL – CONICET) Esperanza Santa Fe Argentina
| | - L. R. Antoniazzi
- Laboratorio de Ecología de Enfermedades Instituto de Ciencias Veterinarias del Litoral Universidad Nacional del Litoral – Consejo de Investigaciones Científicas y Técnicas (UNL – CONICET) Esperanza Santa Fe Argentina
| | - M. A. Quiroga
- Laboratorio de Ecología de Enfermedades Instituto de Ciencias Veterinarias del Litoral Universidad Nacional del Litoral – Consejo de Investigaciones Científicas y Técnicas (UNL – CONICET) Esperanza Santa Fe Argentina
| | - P. M. Beldomenico
- Laboratorio de Ecología de Enfermedades Instituto de Ciencias Veterinarias del Litoral Universidad Nacional del Litoral – Consejo de Investigaciones Científicas y Técnicas (UNL – CONICET) Esperanza Santa Fe Argentina
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Monje LD, Costa FB, Colombo VC, Labruna MB, Antoniazzi LR, Gamietea I, Nava S, Beldomenico PM. Dynamics of Exposure to Rickettsia parkeri in Cattle in the Paraná River Delta, Argentina. J Med Entomol 2016; 53:660-665. [PMID: 26794232 DOI: 10.1093/jme/tjv250] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 12/21/2015] [Indexed: 06/05/2023]
Abstract
Several cases of human rickettsiosis caused by Rickettsia parkeri were recently documented in the Paraná River delta of Argentina, where the tick vector is Amblyomma triste Koch. As cattle suffer recurrent A. triste infestations, they are at risk of becoming infected with R. parkeri Herein we investigated the dynamics of R. parkeri and its A. triste vector in a herd of beef cattle. Cattle were followed for 18 mo and samples were analyzed for the presence of antibodies against four Rickettsia species (R. parkeri, Rickettsia bellii, Rickettsia amblyommii, and Rickettsia felis) and also for the presence of rickettsial DNA. Additionally, cattle were examined for attached ticks and questing adult ticks were collected. All ticks were analyzed for the presence of rickettsial DNA. No evidence of rickettsemia was found in any cow, but the high R. parkeri infection rate documented in A. triste both questing in the study area (13.9%) and feeding on cattle (19.8%) and the identification of antibodies against R. parkeri antigen in 90% of cattle are evidence that infection is taking place. Altogether, our data suggest that A. triste ticks are capable of naturally exposing cattle to R. parkeri However, the progress of R. parkeri infection and its impact on bovine health and production remain to be established.
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Affiliation(s)
- L D Monje
- Laboratorio de Ecología de Enfermedades, Instituto de Ciencias Veterinarias del Litoral (ICiVet-Litoral), Universidad Nacional del Litoral (UNL)/Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Esperanza, Santa Fe, S3080, Argentina (; ; ; ),
| | - F B Costa
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, São Paulo, 05508-270, Brazil (; )
| | - V C Colombo
- Laboratorio de Ecología de Enfermedades, Instituto de Ciencias Veterinarias del Litoral (ICiVet-Litoral), Universidad Nacional del Litoral (UNL)/Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Esperanza, Santa Fe, S3080, Argentina (; ; ; )
| | - M B Labruna
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, São Paulo, 05508-270, Brazil (; )
| | - L R Antoniazzi
- Laboratorio de Ecología de Enfermedades, Instituto de Ciencias Veterinarias del Litoral (ICiVet-Litoral), Universidad Nacional del Litoral (UNL)/Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Esperanza, Santa Fe, S3080, Argentina (; ; ; )
| | - I Gamietea
- Instituto Nacional de Tecnología Agropecuaria, Estación Experimental San Pedro, B2930, Argentina , and
| | - S Nava
- Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Rafaela, S2300, Argentina
| | - P M Beldomenico
- Laboratorio de Ecología de Enfermedades, Instituto de Ciencias Veterinarias del Litoral (ICiVet-Litoral), Universidad Nacional del Litoral (UNL)/Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Esperanza, Santa Fe, S3080, Argentina (; ; ; )
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Tarragona EL, Eberhardt MAT, Zurvera D, Beldomenico PM, Mastropaolo M. Primer registro de Amblyomma Aureolatum (Pallas, 1772) y Amblyomma Ovale Koch, 1844 (Acari: Ixodidae) en la provincia de Santa Fe, Argentina. FAVE Cs Vet 2014. [DOI: 10.14409/favecv.v11i1/2.4562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Colombo VC, Lareschi M, Monje LD, Nava S, Antoniazzi LR, Beldomenico PM, Guglielmone AA. Garrapatas (ixodida) y ácaros (mesostigmata) parásitos de roedores sigmodontinos del delta del Paraná, Argentina. FAVE Cs Vet 2014. [DOI: 10.14409/favecv.v12i1/2.4544] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Nava S, Lareschi M, Beldomenico PM, Zerpa C, Venzal JM, Mangold AJ, Guglielmone AA. Sigmodontinae rodents as hosts for larvae and nymphs ofIxodes loricatusNeumann, 1899 (Acari: Ixodidae). Parasite 2014; 11:411-4. [PMID: 15638143 DOI: 10.1051/parasite/2004114411] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Larvae and nymphs of Ixodes loricatus Neumann, 1899 ticks (confirmed by morphological characters and by comparison of 16S mitochondrial rDNA sequences) were collected from Sigmodontinae Wagner, rodents in central and northern Argentina and Uruguay. A total of 100 larvae and 38 nymphs of I. loricatus were collected on the genera Akodon Meyen (n = 36 individuals), Calomys Waterhouse (n = 2), Oligoryzomys Bang in = 12), Oxymycterus Waterhouse (n = 9), and Scapteromys Waterhouse (n = 13). 72 larvae and 18 nymphs were collected on Akodon. Adults of I. loricatus were found in central Argentina and Uruguay on Didelphimorphia of the genera Didelphis Linnaeus and Lutreolina Thomas. Ixodes loricatus has been considered a species with strict total specificity to Didelphimorphia. Our results show that this statement may not be justified. Sigmodontinae rodents are sympatric and share habitats with the phylogenetically distant Didelphimorphia; infestation with I. loricatus seems to be its consequence. We tentatively consider I. loricatus moderately specific to Didelphimorphia.
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Affiliation(s)
- S Nava
- Centro de Estudios Parasitológicos y de Vectores, 2 No 584, CP 1900 La Plata Argentina
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Silvestri L, Antoniazzi LR, Couri MS, Monje LD, Beldomenico PM. First record of the avian ectoparasite Philornis downsi Dodge & Aitken, 1968 (Diptera: Muscidae) in Argentina. Syst Parasitol 2011; 80:137-40. [PMID: 21898202 DOI: 10.1007/s11230-011-9314-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2011] [Accepted: 05/02/2011] [Indexed: 10/17/2022]
Abstract
Species of Philornis Meinert, 1890 (Diptera, Muscidae) are Neotropical dipterans that include species with parasitic larvae which feed on nestling birds. To date, all Philornis species that have been recorded from Argentina have parasitic subcutaneous larvae. Here, for the first time for Argentina, we report the finding of Philornis downsi Dodge & Aitken, 1968, a fly with a nest-dwelling, semi-haematophagous larva. This record, from the humid Chaco ecoregion of Argentina in the nest of a saffron finch Sicalis flaveola pelzelni Sclater, substantially extends the known distribution of this species. We also report the consensus sequences of the internal transcribed spacer 1 (ITS1) and ITS2 regions of three of the specimens for future reference and comparison. Further investigation is needed to determine whether Argentina is part of the historical range of P. downsi or, alternatively, represents a recent expansion of its range, perhaps due to climatic changes or other factors of global environmental variation.
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Affiliation(s)
- L Silvestri
- Laboratorio de Ecología de Enfermedades, Facultad de Ciencias Veterinarias, Universidad Nacional del Litoral, RP Kreder 2805, 3080, Esperanza, Santa Fe, Argentina
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Antoniazzi LR, Manzoli DE, Rohrmann D, Saravia MJ, Silvestri L, Beldomenico PM. Climate variability affects the impact of parasitic flies on Argentinean forest birds. J Zool (1987) 2010. [DOI: 10.1111/j.1469-7998.2010.00753.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Beldomenico PM, Rey F, Prado WS, Villarreal JC, Muñoz-de-Toro M, Luque EH. In ovum exposure to pesticides increases the egg weight loss and decreases hatchlings weight of Caiman latirostris (Crocodylia: Alligatoridae). Ecotoxicol Environ Saf 2007; 68:246-51. [PMID: 17280716 DOI: 10.1016/j.ecoenv.2006.12.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2006] [Revised: 11/16/2006] [Accepted: 12/15/2006] [Indexed: 05/13/2023]
Abstract
The increasing use of pesticides affects ecosystem health. Caiman latirostris is a South American species with ecological and physiological features that render it vulnerable to exposure to pesticides with endocrine disruptor's action. Our main objective was to test the effect of in ovum exposure to atrazine and endosulfan on the sex ratio of caiman hatchlings; however, we are also presenting unexpected findings regarding pesticide effects on egg weight loss during incubation and hatchlings relative weight. Caiman eggs were incubated under controlled temperature (30 and 33 degrees C) and humidity (>90%). They were treated with vehicle, 17 beta-estradiol (1.4ppm), atrazine (0.2ppm) and endosulfan (0.02; 2; 20ppm). Pesticides did not cause estrogen-like effects on sex determination. Greater egg weight loss was observed in eggs treated with atrazine and higher doses of endosulfan (2 and 20ppm) (p=0.0005). These pesticides also caused a reduction in hatchling fractional weight (p=0.0497). These effects might have a significant impact on caiman population dynamics.
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Affiliation(s)
- P M Beldomenico
- Laboratorio de Endocrinología y Tumores Hormonodependientes, Faculty of Biochemistry and Biological Sciences, Universidad Nacional del Litoral, Santa Fe, Argentina
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Beldomenico PM, Chomel BB, Foley JE, Sacks BN, Baldi CJ, Kasten RW, Gardner IA. Environmental factors associated with Bartonella vinsonii subsp. berkhoffii seropositivity in free-ranging coyotes from northern California. Vector Borne Zoonotic Dis 2005; 5:110-9. [PMID: 16011426 DOI: 10.1089/vbz.2005.5.110] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Bartonella vinsonii subsp. berkhoffii is a newly recognized pathogen of domestic dogs and humans. Coyotes (Canis latrans) are considered an important reservoir of this bacterium in the western United States, but its vectors are still unknown. Our objective was to identify environmental factors associated with Bartonella antibody prevalence in 239 coyotes from northern California, using an enzyme-linked immunosorbent assay. In addition, associations were evaluated between B. v. berkhoffii and two pathogens with known vectors and habitat requirements, Dirofilaria immitis and Anaplasma phagocytophilum. Overall, B. v. berkhoffii seroprevalence was 28% (95% confidence interval [CI], 22.3%, 33.7%) and Bartonella seropositive coyotes were more likely than seronegative coyotes to be positive for Anaplasma phagocytophilum (Odds ratio = 3.3; 95% CI = 1.8, 5.9) and Dirofilaria immitis (Odds ratio = 2.1; 95% CI = 1.2, 3.8). The most likely geographic clusters of Bartonella and Dirofilaria overlapped. Bartonella seropositivity was associated with higher precipitation (p = 0.003) and proximity to the coast (p = 0.007) in univariate analysis. The association with precipitation varied with season, based on a logistic regression model.
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Affiliation(s)
- P M Beldomenico
- Facultad de Ciencias Veterinarias, Universidad Nacional del Litoral, Esperanza, Santa Fe, Argentina
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Abstract
REASONS FOR PERFORMING STUDY The most common cause of death as a direct result of colic is acute circulatory failure secondary to intestinal ischaemia. Early and accurate recognition of ischaemic bowel is essential to decrease complications and increase survival. Blood to peritoneal lactate values have been evaluated as a prognostic indicator, but lactate values characterised by type of lesion have not been reported. HYPOTHESIS Plasma and peritoneal lactate values are higher in horses with intestinal ischaemia secondary to a strangulating obstruction (ISSO). METHODS Venous blood and peritoneal fluid were collected sequentially from 20 clinically healthy horses and 189 horses admitted for colic during a one-year period. Blood gas, pH, electrolyte (K+, Na+, Ca++, Cl-), glucose and lactate values were determined for blood and peritoneal fluid samples; other values recorded for peritoneal fluid included gross appearance, total protein and nucleated cell count. Information regarding diagnosis, treatment and outcome was retrieved from the medical records. RESULTS Peritoneal and plasma levels of lactate were lower in control compared to clinical cases. Horses with ISSO had a higher peritoneal lactate value (8.45 mmol/l) than those with nonstrangulating obstruction (2.09 mmo/l). Factors with the strongest correlations with the presence of ISSO were changes in the gross appearance of the peritoneal fluid and values of peritoneal fluid chloride, pH and log10 lactate. CONCLUSIONS Analysis of peritoneal fluid gross appearance, pH, lactate and chloride can be used for diagnosis of ISSO. POTENTIAL RELEVANCE Peritoneal fluid lactate is a better predictor of ISSO than blood lactate and may aid in early detection of catastrophic peritoneal lesions such as intestinal strangulation and rupture.
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Affiliation(s)
- K M Latson
- Veterinary Medical Teaching Hospital and Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California, USA
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Abstract
In the winter of 2000, a greater than 80% reduction in the guanaco population located in Cabo Dos Bahi;as Wildlife Reserve, Chubut, Argentina, was evident due to massive mortality attributed to starvation. Twelve guanacos were necropsied and samples were analyzed at the Parasitology Laboratory of Facultad de Ciencias Veterinarias, Universidad Nacional del Litoral. Fecal analysis revealed developmental stages of Nematodirus sp., Marshallagia sp., Trichuris sp. and Eimeria spp. Histopathological analysis showed the presence of Sarcocystis sp. in muscle and fascia cysts. Other parasites recovered included Dictyocaulus filaria, Trichuris tenuis and Moniezia expansa. Of these, D. filaria and M. expansa possibly reflect interactions with domestic sheep. This is the first time that T. tenuis has been reported in guanacos.
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Affiliation(s)
- P M Beldomenico
- Facultad de Ciencias Veterinarias, Universidad Nacional del Litoral, R.P. Kreder 2805, Esperanza, 3080 Santa Fe, Argentina.
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