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Servián A, Lorena Zonta M, Navone GT. Differential diagnosis of human Entamoeba infections: Morphological and molecular characterization of new isolates in Argentina. Rev Argent Microbiol 2024; 56:16-24. [PMID: 37407358 DOI: 10.1016/j.ram.2023.05.003] [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: 11/28/2022] [Revised: 03/20/2023] [Accepted: 05/25/2023] [Indexed: 07/07/2023] Open
Abstract
Entamoeba infections occur worldwide, with higher frequency in countries of low socioeconomic status and poor public health. Since Entamoeba histolytica has long been recognized as the only pathogenic species, making a differential diagnosis of other morphologically identical Entamoeba is important. This study aimed to determine the prevalence of Entamoeba species in two populations from Argentina, make a differential diagnosis by PCR and characterize Entamoeba isolates at the SSU rRNA gene. A total of 493 serial fecal samples were obtained from individuals in the provinces of Buenos Aires (n=210) and Misiones (n=283). Samples were examined by conventional methods (formalin-ethyl acetate and Willis flotation) and specific PCRs to differentiate Entamoeba species. Entamoeba isolates were characterized by sequencing a fragment of the SSU rRNA gene. The overall prevalence of Entamoeba infection was 12.4%, being more prevalent in Buenos Aires than in Misiones (14.8% vs. 10.6%). A case of E. histolytica confirmed by PCR and sequence analysis was reported for the first time in Buenos Aires. Moreover, new genetic data on Entamoeba coli and Entamoeba dispar were recorded. The phylogenetic analysis revealed a congruence between morphological characteristics and SSU rRNA gene sequences. This study increases the amount of information on the distribution of these species in Argentina and the region of the Americas.
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Affiliation(s)
- Andrea Servián
- Centro de Estudios Parasitológicos y de Vectores (CEPAVE-CONICET-UNLP), La Plata, Buenos Aires, Argentina.
| | - María Lorena Zonta
- Centro de Estudios Parasitológicos y de Vectores (CEPAVE-CONICET-UNLP), La Plata, Buenos Aires, Argentina
| | - Graciela T Navone
- Centro de Estudios Parasitológicos y de Vectores (CEPAVE-CONICET-UNLP), La Plata, Buenos Aires, Argentina
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Garbin LE, Servián A, Fuentes L, Morgenthaler A, Millones A, Fuchs D, Diaz JI, Navone GT. Phylogenetic relationship between Contracaecum spp. (Nematoda, Anisakidae) parasitizing cormorants (Aves, Phalacrocoracidae) in Argentina. Parasitol Res 2023; 123:61. [PMID: 38112785 DOI: 10.1007/s00436-023-08070-4] [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: 07/27/2023] [Accepted: 10/19/2023] [Indexed: 12/21/2023]
Abstract
Species of the genus Contracaecum (Family Anisakidae) exhibit a broad host and geographical distribution, parasitizing aquatic organisms such as piscivorous birds and mammals as their definitive hosts. Several Contracaecum species have been reported parasitizing cormorants (Family: Phalacrocoracidae) in South America. The objective of this study was to highlight phylogenetic relationships between Contracaecum species parasitizing cormorants based on both molecular analyses and the papillae arrangement on the male tail. Some Contracaecum species parasitizing Red-legged cormorants from the Ría Deseado (RD), and other nematodes parasitizing eight Neotropic cormorants from San Miguel del Monte lagoon (SMML), Argentina, were collected and analyzed. Both morphological and phylogenetic analyses allowed us to recognize two species: Contracaecum chubutensis parasitizing Phalacrocorax gaimardi, and Contracaecum australe parasitic in Phalacrocorax brasilianus. According to the obtained sequences (mtDNA cox2, ITS1, ITS2, and SSrRNA), Contracaecum sp. parasitizing P. gaimardi exhibited concordance with the previously reported C. chubutensis parasitizing P. atriceps from Bahía Bustamante, Chubut province. Likewise, Contracaecum sp. isolates parasitizing P. brasilianus showed concordance with C. australe from Chile. Besides, the papillae arrangement on the male tail allowed us to understand the interspecific and genetic relationships between the Contracaecum species. The analyses confirm that C. chubutensis specimens parasitizing P. gaimardi from RD present a new host record for the species, whereas, those C. australe specimens parasitizing P. brasilianus from SMML provide a new geographical record for the species and the extension of its distribution range. Present results also confirm the inland and marine distribution of C. australe and C. chubutensis, respectively.
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Affiliation(s)
- Lucas E Garbin
- Centro de Estudios Parasitológicos y de Vectores (CCT La Plata-CONICET-UNLP), 120 s/n e/61 y 62, 1900, La Plata, Buenos Aires, Argentina.
| | - Andrea Servián
- Centro de Estudios Parasitológicos y de Vectores (CCT La Plata-CONICET-UNLP), 120 s/n e/61 y 62, 1900, La Plata, Buenos Aires, Argentina
| | - Lautaro Fuentes
- Centro de Estudios Parasitológicos y de Vectores (CCT La Plata-CONICET-UNLP), 120 s/n e/61 y 62, 1900, La Plata, Buenos Aires, Argentina
| | - Annick Morgenthaler
- Centro de Investigaciones Puerto Deseado, Universidad Nacional de la Patagonia Austral, Av. Prefectura Naval s/n, 9050, Puerto Deseado, Santa Cruz, Argentina
| | - Ana Millones
- Centro de Investigaciones Puerto Deseado, Universidad Nacional de la Patagonia Austral, Av. Prefectura Naval s/n, 9050, Puerto Deseado, Santa Cruz, Argentina
| | - Daniela Fuchs
- Sección Ornitología, División Zoología Vertebrados (FCNyM-UNLP-CONICET), Paseo del Bosque s/n, B1900FWA, La Plata, Buenos Aires, Argentina
| | - Julia I Diaz
- Centro de Estudios Parasitológicos y de Vectores (CCT La Plata-CONICET-UNLP), 120 s/n e/61 y 62, 1900, La Plata, Buenos Aires, Argentina
| | - Graciela T Navone
- Centro de Estudios Parasitológicos y de Vectores (CCT La Plata-CONICET-UNLP), 120 s/n e/61 y 62, 1900, La Plata, Buenos Aires, Argentina
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Martins NBG, Panisse G, Robles MDR, Diaz JI, Navone GT. Update of Dicrocoeliidae (Digenea) parasitizing rodents from the Americas with a description of a new Platynosomoides species from Argentina. AN ACAD BRAS CIENC 2022; 94:e20211430. [PMID: 36417611 DOI: 10.1590/0001-3765202220211430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Accepted: 02/06/2022] [Indexed: 11/22/2022] Open
Abstract
Digeneans are common parasites of small mammals. Dicrocoeliidae is a family with a cosmopolitan distribution, with 18 genera previously recorded from mammals in the Americas, six of them parasitizing rodents in Argentina. In this study, an updated compilation is provided of Dicrocoeliidae from rodents in the Americas. Also, a new Platynosomoides species is described parasitizing the cricetid rodent Akodon montensis of the Atlantic Forest in Argentina. Digital repositories were used to search for Dicrocoeliidae from rodents in the Americas. Rodents were collected in four localities of the Atlantic Forest, Argentina. Digeneans were removed from the rodent's bile duct, and conventional studies were used for the morphological description. A total of 15 Dicrocoeliidae species were found parasitizing 18 rodent species from eight countries in the Americas. The new species of Platynosomoides from Akodon montensis differs from the other two species of genus by the size of body, testes, ovary, cecum length and position and length of the vitelline bands. Dicrocoeliidae show growing diversity, and the compilation of species in a rodent host base allows a clearer comparison and identification of new taxa in the future.
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Affiliation(s)
- Natalia B Guerreiro Martins
- Centro de Estudios Parasitológicos y de Vectores (CEPAVE), Bv 120 e/ 60 y 64, (1900), CCT- CONICET- La Plata, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina
| | - Guillermo Panisse
- Centro de Estudios Parasitológicos y de Vectores (CEPAVE), Bv 120 e/ 60 y 64, (1900), CCT- CONICET- La Plata, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina
| | - María Del Rosario Robles
- Centro de Estudios Parasitológicos y de Vectores (CEPAVE), Bv 120 e/ 60 y 64, (1900), CCT- CONICET- La Plata, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina
| | - Julia I Diaz
- Centro de Estudios Parasitológicos y de Vectores (CEPAVE), Bv 120 e/ 60 y 64, (1900), CCT- CONICET- La Plata, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina
| | - Graciela T Navone
- Centro de Estudios Parasitológicos y de Vectores (CEPAVE), Bv 120 e/ 60 y 64, (1900), CCT- CONICET- La Plata, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina
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Zonta ML, Servián A, Panisse G, Oyhenart EE, Navone GT. Nutritional status, intestinal parasitic infections, and socio-environmental conditions in Mbyá-guaraní children: The current situation in communities in central Misiones, Argentina. Am J Hum Biol 2022; 34:e23749. [PMID: 35388936 DOI: 10.1002/ajhb.23749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 02/25/2022] [Accepted: 03/24/2022] [Indexed: 11/09/2022] Open
Abstract
OBJECTIVES Our previous research in Mbyá-guaraní communities of central Misiones showed high levels of growth stunting and intestinal parasites in children, as well as associations between these variables and deficient sanitary conditions. New studies were necessary to update the present health status of the previously studied Mbyá populations after around two decades. Therefore, we evaluated the current nutritional status, intestinal parasites, and socio-environmental conditions among Mbyá-guaraní children from these communities. METHODS Body weight and height of 102 individuals (aged 2-14) were measured and nutritional status was estimated according to the World Health Organization criteria. Serial fecal samples and anal swabs were analyzed from 75 children (aged 1-14). Socio-environmental data were obtained from questionnaires. RESULTS The prevalence of undernutrition was 31.4% and excess of weight was 10.8%. The prevalence of stunting and of overweight reached 30.4% and 8.8%, respectively. About 85% of the children were infected with at least one of the 14 species identified, and around 44% had multiple parasite infections. The most prevalent species were Enterobius vermicularis and hookworms. Among undernourished children, 88.2% were parasitized by at least one of the potentially pathogenic species detected. Most of the families lived in overcrowded conditions in precarious houses, defecated in latrines, and consumed well water. A higher risk of parasitosis was associated with the source of drinking water. CONCLUSIONS Although the prevalence of undernutrition and intestinal parasites decreased compared with our previous studies, we still observed the coexistence of stunting, excess weight, and parasitic infections, in a context of socio-environmental vulnerability.
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Affiliation(s)
- María Lorena Zonta
- Centro de Estudios Parasitológicos y de Vectores (CEPAVE-CONICET-UNLP), Buenos Aires, Argentina
| | - Andrea Servián
- Centro de Estudios Parasitológicos y de Vectores (CEPAVE-CONICET-UNLP), Buenos Aires, Argentina
| | - Guillermo Panisse
- Centro de Estudios Parasitológicos y de Vectores (CEPAVE-CONICET-UNLP), Buenos Aires, Argentina
| | - Evelia E Oyhenart
- Centro de Estudios Parasitológicos y de Vectores (CEPAVE-CONICET-UNLP), Buenos Aires, Argentina.,Laboratorio de Investigaciones en Ontogenia y Adaptación (LINOA)- Facultad de Ciencias Naturales y Museo (FCNyM), Universidad Nacional de La Plata, Buenos Aires, Argentina
| | - Graciela T Navone
- Centro de Estudios Parasitológicos y de Vectores (CEPAVE-CONICET-UNLP), Buenos Aires, Argentina
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Abstract
Urban rodents are associated with parasites and pathogens, which present health risks for humans, but information on factors related to parasite and pathogen infection in rodents in cities of Latin America is scarce. This study analyzes the hosts, host community structure and environmental characteristics of parasite and pathogen fauna present in the three species of urban rodents in an urban area of South America. Rodents were captured seasonally in seven different neighborhoods. Digestive tracts were dissected under stereoscopic microscopy and feces were processed using a sedimentation technique. Protozoa and bacteria were detected through polymerase chain reaction and indirect immunofluorescence techniques. In Rattus norvegicus, Rattus rattus and Mus musculus, ten helminths, three protozoa and two bacteria were found. Six were zoonotic: Toxoplasma gondii; Hymenolepis diminuta; Rodentolepis nana; Strobilocercus fasciolaris; Leptospira borgpetersenii; and Leptospira interrogans. The parasite and pathogen infections were influenced by the host species, the host community structure, the season, and the presence of streams in the neighborhood. Urban rodents may be the infection source of many zoonotic diseases and it is important to generate public policies for this problem. This study is one example of the situation of many cities of Latin America, where peripheral neighborhoods are growing dramatically.
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Affiliation(s)
- B Fitte
- Centro de Estudios Parasitológicos y de Vectores, CEPAVE (CCT La Plata CONICET UNLP), La Plata, Argentina
| | - R Cavia
- Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
- Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA), UBA-CONICET, Buenos Aires, Argentina
| | - M Del Rosario Robles
- Centro de Estudios Parasitológicos y de Vectores, CEPAVE (CCT La Plata CONICET UNLP), La Plata, Argentina
| | - A Dellarupe
- Laboratorio de Inmunoparasitología, Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, La Plata, Argentina
| | - J M Unzaga
- Laboratorio de Inmunoparasitología, Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, La Plata, Argentina
| | - G T Navone
- Centro de Estudios Parasitológicos y de Vectores, CEPAVE (CCT La Plata CONICET UNLP), La Plata, Argentina
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Rios TA, Drago FB, Ezquiaga MC, Abba AM, Navone GT. Cestode Parasites of Armadillos (Mammalia: Xenarthra) from Argentina: Two New Species of Mathevotaenia (Anoplocephalidae) in Tolypeutes matacus. J Parasitol 2020. [DOI: 10.1645/19-103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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)
- Tatiana A. Rios
- Centro de Estudios Parasitológicos y de Vectores CEPAVE (CONICET–UNLP), Boulevard 120 S/N, 1900, La Plata, Buenos Aires, Argentina
| | - Fabiana B. Drago
- Laboratorio de Helmintología, División Zoología Invertebrados, Museo de La Plata, Paseo del Bosque S/N (1900), La Plata, Buenos Aires, Argentina
| | - María C. Ezquiaga
- Centro de Estudios Parasitológicos y de Vectores CEPAVE (CONICET–UNLP), Boulevard 120 S/N, 1900, La Plata, Buenos Aires, Argentina
| | - Agustín M. Abba
- Centro de Estudios Parasitológicos y de Vectores CEPAVE (CONICET–UNLP), Boulevard 120 S/N, 1900, La Plata, Buenos Aires, Argentina
| | - Graciela T. Navone
- Centro de Estudios Parasitológicos y de Vectores CEPAVE (CONICET–UNLP), Boulevard 120 S/N, 1900, La Plata, Buenos Aires, Argentina
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Rios TA, Drago FB, Ezquiaga MC, Abba AM, Navone GT. Cestode Parasites of Armadillos (Mammalia: Xenarthra) from Argentina: Two New Species of Mathevotaenia (Anoplocephalidae) in Tolypeutes matacus. J Parasitol 2020; 106:123-132. [PMID: 32031905] [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: 06/10/2023] Open
Abstract
A total of 20 specimens of Tolypeutes matacus (Desmarest, 1804) from the Chaco Region in Argentina were examined. This study revealed the presence of 3 species of the genus Mathevotaenia Akumyan, 1946 (Cestoda Anoplocephalidae), two of them new for science. These species are described, illustrated, and compared with related species. Mathevotaenia chamicalensis n. sp. is characterized by having a small body with 45-65 proglottids; a globose scolex, longer than wide and well delimited from strobila; a long neck; mature and gravid proglottids longer than wide; and 20-35 testes located in a single field. Mathevotaenia yepesi n. sp. is characterized by having a small body with 86-128 proglottids; a rectangular scolex, wider than long and not well delimited from strobila; neck absent; mature and gravid proglottids wider than long; and 23-50 testes located in the medial portion of the proglottid. The finding of Mathevotaenia argentinensis Campbell et al., 2003 parasitizing T. matacus represents the first record in armadillos.
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Affiliation(s)
- Tatiana A Rios
- Centro de Estudios Parasitológicos y de Vectores CEPAVE (CONICET-UNLP), Boulevard 120 S/N, 1900, La Plata, Buenos Aires, Argentina
| | - Fabiana B Drago
- Laboratorio de Helmintología, División Zoología Invertebrados, Museo de La Plata, Paseo del Bosque S/N (1900), La Plata, Buenos Aires, Argentina
| | - María C Ezquiaga
- Centro de Estudios Parasitológicos y de Vectores CEPAVE (CONICET-UNLP), Boulevard 120 S/N, 1900, La Plata, Buenos Aires, Argentina
| | - Agustín M Abba
- Centro de Estudios Parasitológicos y de Vectores CEPAVE (CONICET-UNLP), Boulevard 120 S/N, 1900, La Plata, Buenos Aires, Argentina
| | - Graciela T Navone
- Centro de Estudios Parasitológicos y de Vectores CEPAVE (CONICET-UNLP), Boulevard 120 S/N, 1900, La Plata, Buenos Aires, Argentina
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Garbin LE, Diaz JI, Navone GT. Species of Contracaecum Parasitizing the Magellanic Penguin Spheniscus magellanicus (Spheniscidae) from the Argentinean Coast. J Parasitol 2019; 105:222-231. [PMID: 30900944] [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
Anisakid nematodes have a worldwide distribution and are associated with fishes, birds, and marine mammals from freshwater, brackish, and marine systems. The aims of this work are to report for the first time Contracaecum mirounga parasitizing the Magellanic penguin Spheniscus magellanicus, to report another Contracaecum species in the same host species, and to discuss the validity of Contracaeceum spheniscus. Several dead chicks, juveniles, and adults of S. magellanicus were collected along the Argentinean coast from 2002 to 2009. Nematodes were removed from digestive tracts and studied using both light and scanning electron microscopy. Nematode prevalences were 2.38% for C. mirounga and 12.5% for Contracaecum sp. Contracaecum mirounga was found in 1 penguin from Península Valdés, Chubut. This species is known as a specific parasite of marine mammals such as Pinnipedia, thereby suggesting that this nematode is not as specific as believed. Another species of Contracaecum sp. was found parasitizing 1 penguin from the Río de la Plata coast. It possessed an unusual interlabial morphology and arrangement of male caudal papillae. Despite the low prevalence, the distinct morphological features are convincing and support the presence of a new Contracaecum species. However, a formal description is not presented because sufficient male specimens are lacking. Finally, C. spheniscus is considered a junior synonym of Contracaecum pelagicum. Future molecular studies might be helpful to determine the real diversity of Contracaecum species parasitizing S. magellanicus considering the number of sibling species recognized among the anisakids.
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Affiliation(s)
- Lucas E Garbin
- 1 Sección Ornitología, División Zoología Vertebrados, Facultad de Ciencias Naturales y Museo (UNLP-CONICET), La Plata, Buenos Aires, Argentina
| | - Julia I Diaz
- 2 Centro de Estudios Parasitológicos y de Vectores (CCT La Plata-CONICET-UNLP), Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata (UNLP), calle 120 e/61 y 62, B1900FWA La Plata, Buenos Aires Province, Argentina
| | - Graciela T Navone
- 2 Centro de Estudios Parasitológicos y de Vectores (CCT La Plata-CONICET-UNLP), Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata (UNLP), calle 120 e/61 y 62, B1900FWA La Plata, Buenos Aires Province, Argentina
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Garbin LE, Diaz JI, Navone GT. Species of Contracaecum Parasitizing the Magellanic Penguin Spheniscus Magellanicus (Spheniscidae) from the Argentinean Coast. J Parasitol 2019. [DOI: 10.1645/17-91] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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)
- Lucas E. Garbin
- Sección Ornitología, División Zoología Vertebrados, Facultad de Ciencias Naturales y Museo (UNLP–CONICET), La Plata, Buenos Aires, Argentina
| | - Julia I. Diaz
- Centro de Estudios Parasitológicos y de Vectores (CCT La Plata–CONICET–UNLP), Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata (UNLP), calle 120 e/61 y 62, B1900FWA La Plata, Buenos Aires Province, Argentina
| | - Graciela T. Navone
- Centro de Estudios Parasitológicos y de Vectores (CCT La Plata–CONICET–UNLP), Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata (UNLP), calle 120 e/61 y 62, B1900FWA La Plata, Buenos Aires Province, Argentina
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Valente R, Robles MDR, Navone GT, Diaz JI. Angiostrongylus spp. in the Americas: geographical and chronological distribution of definitive hosts versus disease reports. Mem Inst Oswaldo Cruz 2018; 113:143-152. [PMID: 29412352 PMCID: PMC5804305 DOI: 10.1590/0074-02760170226] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 11/07/2017] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Angiostrongyliasis is an infection caused by nematode worms of the genus
Angiostrongylus. The adult worms inhabit the pulmonary
arteries, heart, bronchioles of the lung, or mesenteric arteries of the caecum of
definitive host. Of a total of 23 species of Angiostrongylus
cited worldwide, only nine were registered in the American Continent. Two species,
A. cantonensis and A. costaricensis, are
considered zoonoses when the larvae accidentally parasitise man. OBJECTIVES In the present study, geographical and chronological distribution of definitive
hosts of Angiostrongylus in the Americas is analysed in order to
observe their relationship with disease reports. Moreover, the role of different
definitive hosts as sentinels and dispersers of infective stages is discussed. METHODS The study area includes the Americas. First records of
Angiostrongylus spp. in definitive or accidental hosts were
compiled from the literature. Data were included in tables and figures and were
matched to geographic information systems (GIS). FINDINGS Most geographical records of Angiostrongylus spp. both for
definitive and accidental hosts belong to tropical areas, mainly equatorial zone.
In relation to those species of human health importance, as A.
cantonensis and A. costaricensis, most disease cases
indicate a coincidence between the finding of definitive host and disease record.
However, in some geographic site there are gaps between report of definitive host
and disease record. In many areas, human populations have invaded natural
environments and their socioeconomic conditions do not allow adequate medical
care. MAIN CONCLUSIONS Consequently, many cases for angiostrongyliasis could have gone unreported or
unrecognised throughout history and in the nowadays. Moreover, the population
expansion and the climatic changes invite to make broader and more complete range
of observation on the species that involve possible epidemiological risks. This
paper integrates and shows the current distribution of
Angiostrongylus species in America, being this information
very relevant for establishing prevention, monitoring and contingency strategies
in the region.
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Affiliation(s)
- Romina Valente
- Instituto Nacional de Medicina Tropical, Puerto Iguazú, Misiones, Argentina
| | - Maria Del Rosario Robles
- Centro Científico Tecnológico La Plata (CONICET-UNLP), Facultad de Ciencias Naturales y Museo, Centro de Estudios Parasitológicos y de Vectores, Buenos Aires, Argentina
| | - Graciela T Navone
- Centro Científico Tecnológico La Plata (CONICET-UNLP), Facultad de Ciencias Naturales y Museo, Centro de Estudios Parasitológicos y de Vectores, Buenos Aires, Argentina
| | - Julia I Diaz
- Centro Científico Tecnológico La Plata (CONICET-UNLP), Facultad de Ciencias Naturales y Museo, Centro de Estudios Parasitológicos y de Vectores, Buenos Aires, Argentina
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Ezquiaga MC, Rios TA, Abba AM, Navone GT. A New Rictulariid (Nematoda: Spirurida) in Xenarthrans from Argentina and New Morphological Data of Pterygodermatites ( Paucipectines) Chaetophracti. J Parasitol 2017; 103:727-735. [PMID: 28783421 DOI: 10.1645/16-74] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Pterygodermatites is a cosmopolitan genus of nematodes from mammals, and it is frequently encountered in the parasite fauna of armadillos (Mammalia, Xenarthra, Cingulata). In this work, a new species, Pterygodermatites ( Paucipectines) argentinensis, is described, and new morphometric data, new host records, and the geographical distribution of Pterygodermatites ( Paucipectines) chaetophracti are provided. We examined 109 hosts belonging to Chaetophractus vellerosus, Chaetophractus villosus, Cabassous chacoensis, Dasypus hybridus, Tolypeutes matacus, and Zaedyus pichiy, from several regions of Argentina. Pterygodermatites ( Paucipectines) argentinensis can be distinguished from P. ( P.) chaetophracti by the morphology and size of esophageal teeth of both sexes, by subequal and longer spicules, by having only 1 precloacal cuticular semicircular fan in males, and by a greater number of cuticular processes in females. Cabassous chacoensis and Zaedyus pichiy are new hosts for Pterygodermatites ( P.) chaetophracti.
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Affiliation(s)
- María C Ezquiaga
- Centro de Estudios Parasitológicos y de Vectores, CONICET, UNLP. Boulevard 120 s/n entre 60 y 64 (1900) La Plata, Buenos Aires, Argentina
| | - Tatiana A Rios
- Centro de Estudios Parasitológicos y de Vectores, CONICET, UNLP. Boulevard 120 s/n entre 60 y 64 (1900) La Plata, Buenos Aires, Argentina
| | - Agustín M Abba
- Centro de Estudios Parasitológicos y de Vectores, CONICET, UNLP. Boulevard 120 s/n entre 60 y 64 (1900) La Plata, Buenos Aires, Argentina
| | - Graciela T Navone
- Centro de Estudios Parasitológicos y de Vectores, CONICET, UNLP. Boulevard 120 s/n entre 60 y 64 (1900) La Plata, Buenos Aires, Argentina
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Garraza M, Cesani MF, Navone GT, Oyhenart EE. Malnutrition and body composition in urban and rural schoolchildren: A cross-sectional study in San Rafael, Mendoza (Argentina). Am J Hum Biol 2016; 28:796-803. [PMID: 27238213 DOI: 10.1002/ajhb.22869] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2015] [Revised: 03/04/2016] [Accepted: 05/02/2016] [Indexed: 11/06/2022] Open
Abstract
OBJECTIVES The aim of the present study was to analyze the nutritional status and body composition of children from San Rafael, Mendoza, avoiding urban and rural categorization by generating subpopulations as a function of their socio-environmental characteristics. METHODS A cross-sectional study was performed in 3,596 schoolchildren from 4.0 to 13.9 years of age. Body weight, height, upper arm circumference, and triceps skinfold were measured. Body mass index, total muscle, and fat areas of the arm were calculated. To estimate nutritional status and body composition, the NHANES III reference was used. The socio-environmental variables were surveyed using a structured questionnaire. These variables were processed by categorical principal-component analysis (catPCA). RESULTS The catPCA allowed the differentiation of four groups, three with urban characteristics (high urban, medium urban, impoverished urban), and a rural group. Stunting occurred at a higher rate in the impoverished urban group, and the occurrence of underweight children was higher in the rural group. The prevalence of excess weight varied in the range of 20-26%. The latter value corresponded to children of the high urban group, who also did not show reduced muscle mass. CONCLUSION Children from San Rafael presented differences in nutritional condition and body composition associated with pronounced socio-environmental heterogeneity. Thus, we could observe a gradient from the "high urban" group, with better social, economic, and sanitation conditions and at the same time a more obesogenic environment to the "impoverished urban" and "rural" groups, whose vulnerability reflected a higher prevalence of child undernutrition and the association with excess weight and reduced muscle mass. Am. J. Hum. Biol. 28:796-803, 2016. © 2016Wiley Periodicals, Inc.
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Affiliation(s)
- Mariela Garraza
- IGEVET-Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout" (UNLP-CONICET La Plata), Facultad de Ciencias Veterinarias UNLP, La Plata, Argentina
| | - María F Cesani
- IGEVET-Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout" (UNLP-CONICET La Plata), Facultad de Ciencias Veterinarias UNLP, La Plata, Argentina
| | - Graciela T Navone
- CEPAVE-Centro de Estudios Parasitológicos y de Vectores (UNLP-CONICET La Plata), La Plata, Argentina
| | - Evelia E Oyhenart
- IGEVET-Instituto de Genética Veterinaria "Ing. Fernando Noel Dulout" (UNLP-CONICET La Plata), Facultad de Ciencias Veterinarias UNLP, La Plata, Argentina.,Cátedra de Antropología Biológica IV. Facultad de Ciencias Naturales y Museo, UNLP, La Plata, Argentina
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Robles MDR, Kinsella JM, Galliari C, Navone GT. New host, geographic records, and histopathologic studies of Angiostrongylus spp (Nematoda: Angiostrongylidae) in rodents from Argentina with updated summary of records from rodent hosts and host specificity assessment. Mem Inst Oswaldo Cruz 2016; 111:181-91. [PMID: 26982178 PMCID: PMC4804501 DOI: 10.1590/0074-02760150371] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 02/01/2016] [Indexed: 11/22/2022] Open
Abstract
To date, 21 species of the genus Angiostrongylus (Nematoda: Angiostrongylidae) have been reported around the world, 15 of which are parasites of rodents. In this study, new host, geographic records, and histopathologic studies of Angiostrongylus spp in sigmodontine rodents from Argentina, with an updated summary of records from rodent hosts and host specificity assessment, are provided. Records of Angiostrongylus costaricensis from Akodon montensis and Angiostrongylus morerai from six new hosts and geographical localities in Argentina are reported. The gross and histopathologic changes in the lungs of the host species due to angiostrongylosis are described. Published records of the genus Angiostrongylus from rodents and patterns of host specificity are presented. Individual Angiostrongylus species parasitise between one-19 different host species. The most frequent values of the specificity index (STD) were between 1-5.97. The elevated number of host species (n = 7) of A. morerai with a STD = 1.86 is a reflection of multiple systematic studies of parasites from sigmodontine rodents in the area of Cuenca del Plata, Argentina, showing that an increase in sampling effort can result in new findings. The combination of low host specificity and a wide geographic distribution of Angiostrongylus spp indicates a troubling epidemiological scenario although, as yet, no human cases have been reported.
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Affiliation(s)
- María del Rosario Robles
- Centro Científico Tecnológico-Consejo Nacional de Investigaciones
Científicas y Técnicas, Centro de Estudios Parasitológicos y de Vectores, Buenos Aires,
Argentina
| | | | - Carlos Galliari
- Centro Científico Tecnológico-Consejo Nacional de Investigaciones
Científicas y Técnicas, Centro de Estudios Parasitológicos y de Vectores, Buenos Aires,
Argentina
| | - Graciela T Navone
- Centro Científico Tecnológico-Consejo Nacional de Investigaciones
Científicas y Técnicas, Centro de Estudios Parasitológicos y de Vectores, Buenos Aires,
Argentina
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Digiani MC, Notarnicola J, Navone GT. Rediscovery and New Morphological Data on TwoHassalstrongylus(Nematoda: Heligmonellidae) Coparasitic in the Marsh RatHolochilus chacarius(Rodentia: Cricetidae) from Argentina. J Parasitol 2015; 101:556-64. [DOI: 10.1645/15-746] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Cecilia Ezquiaga M, Abba AM, Cassini GH, Navone GT. Evidencias de parásitos internos en animales vivos: una población de Chaetophractus vellerosus (Xenarthra: Dasypodidae) como modelo de estudio coproparasitológico. REV MEX BIODIVERS 2014. [DOI: 10.7550/rmb.40472] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Zonta ML, Oyhenart EE, Navone GT. Socio‐environmental variables associated with malnutrition and intestinal parasitoses in the child population of Misiones, Argentina. Am J Hum Biol 2014; 26:609-16. [DOI: 10.1002/ajhb.22570] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Revised: 05/03/2014] [Accepted: 05/20/2014] [Indexed: 11/09/2022] Open
Affiliation(s)
- María L. Zonta
- Centro de Estudios Parasitológicos y de Vectores (CEPAVE), UNLP‐CCT CONICETLa Plata Argentina
| | - Evelia E. Oyhenart
- Cátedra de Antropología Biológica IVFacultad de Ciencias Naturales y Museo, UNLPLa Plata Argentina
- Instituto de Genética Veterinaria “Ing. Fernando Noel Dulout” (IGEVET), FCV, UNLP‐CCT CONICETLa Plata Argentina
| | - Graciela T. Navone
- Centro de Estudios Parasitológicos y de Vectores (CEPAVE), UNLP‐CCT CONICETLa Plata Argentina
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Ezquiaga MC, Navone GT. A new species of Moennigia (Trichostrongylina: Molineidae) a parasite of Chaetophractus spp. (Xenarthra: Dasypodidae) from Argentina. J Parasitol 2014; 100:500-3. [PMID: 24552210 DOI: 10.1645/13-337.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Moennigia celinae n. sp. collected from the small intestine of Chaetophractus vellerosus and Chaetophractus villosus (Xenarthra, Dasypodidae) from Argentina is herein described. This new species belongs to the genus Moennigia because it possesses a short uterus with few eggs, atrophied distal branch of the ovejector, vulva near the anus, and a conical tail. The new species has a synlophe with 17 symmetrical ridges and slight ventro-dorsal orientation. The spicule length:body length ratio is similar to that of the other species parasitic of Dasypodidae; however, Moennigia celinae n. sp. differs from Moennigia pintoi and Moennigia lutzi because the latter lack a gubernaculum, and from Moennigia complexus, Moennigia moennigi, Moennigia filamentosus, Moennigia intrusa, Moennigia littlei, Moennigia pulchra and Moennigia dessetae by the latter having very complex spicules with 2 or 3 points at the distal extremity. Moreover, Moennigia celinae n. sp. differs from Moennigia virilis by the length and shape of its spicules. Moennigia celinae n. sp. can be distinguished from Moennigia travassosi by the shape of the dorsal ray of the caudal bursa. Moennigia celinae n. sp. resembles Moennigia pseudopulchra but the gubernaculum of the latter is V-shaped. This is the second report of a species of Moennigia in Argentina and the first for the genus Chaetophractus.
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Affiliation(s)
- María C Ezquiaga
- Centro de Estudios Parasitológicos y de Vectores- CEPAVE- CONICET- UNLP Calle 2 # 584 (1900) La Plata, Argentina
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Gamboa MI, Giambelluca LA, Navone GT. [Spatial distribution of intestinal parasites in the City of La Plata, Argentina]. Medicina (B Aires) 2014; 74:363-370. [PMID: 25347897] [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: 06/04/2023] Open
Abstract
Parasitosis analysis at regional levels is simplified by the use of the Geographic Information System (GIS), which enables the identification of areas with different degrees of vulnerability. We analyzed the spatial distribution of intestinal parasites in La Plata district and their relationship with socio-environmental conditions in order to identify areas with different degrees of epidemiological risk. An epidemiological survey was completed; stool samples were collected and analyzed by Ritchie's method. Levels of precariousness and vulnerability (Iv rate) were calculated and compared to the parasitological results. Parasitological and environmental analysis were carried out on a total of 653 individuals, of whom 585 (89.6%) were children and 68 (10.4%) adults. The analysis indicated that the most vulnerable (Iv = 3-4) were those located in areas with less access to urban infrastructure services. The Iv was strongly associated with the overall prevalence of intestinal parasitosis and the 4 pathogenic species related to the fecal contamination of the environment: Trichuris trichiura, Ascaris lumbricoides, Hymenolepis nana and Giardia lamblia (p < 0.01). On the other hand, Enterobius vermicularis, a parasite not related to the sanitary condition of its host, was not associated with the Iv. Statistical association between poverty and parasitosis was noted; the greater the Iv, higher the incidence of parasites (p < 0.01). GIS allowed zoning socio-environmental variables in an increasing gradient of unfavorable conditions and their relationship to the presence of pathogenic species. The continuity of these studies in different regions of Argentina contributes to the determination of health risk areas.
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Affiliation(s)
- María I Gamboa
- Cátedra de Parasitología Comparada, Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata (UNLP), Argentina. E-mail:
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Ezquiaga MC, Navone GT. Trichostrongylina parasites of Dasypodidae (Xenarthra) from Argentina; a new species of Macielia (Molineidae: Anoplostrongylinae) in Chaetophractus vellerosus and redescription of Trichohelix tuberculata. J Parasitol 2013; 99:821-6. [PMID: 23617773 DOI: 10.1645/13-200.1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Macielia jorgei n. sp. is described from Chaetophractus vellerosus from La Rioja, Argentina. Also Trichohelix tuberculata is redescribed in detail. The new species is characterized by parasitizing the small intestine, possessing a bursal membrane and telamon, having complex and sclerotized spicules distally divided into 2 processes, a simple, poorly sclerotized gubernaculum, and synlophe with bilateral symmetry and 12 cuticular ridges. This is the second report of a species of Macielia in Argentina. The synlophe of Trichohelix tuberculata is asymmetric and is characterized by 3 ventral ridges, oriented to the left. The size of these ridges decreases until they disappear at midbody.
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Affiliation(s)
- María C Ezquiaga
- Centro de Estudios Parasitológicos y de Vectores (CEPAVE), CONICET, UNLP, Calle 2, No. 584 (1900) La Plata, Argentina
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Ezquiaga MC, Digiani MC, Navone GT. A New Molineid (Nematoda: Trichostrongylina) Parasite ofDasypus hybridus(Xenarthra: Dasypodidae) from Argentina. J Parasitol 2012; 98:1156-60. [DOI: 10.1645/ge-3110.1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Robles MDR, Perfumo C, Kinsella JM, Navone GT. Histopathology associated with angiostrongylosis in Akodon species (Rodentia: Sigmodontinae) from Sierra de la Ventana, Buenos Aires, Argentina. J Parasitol 2012; 98:1133-8. [PMID: 22663763 DOI: 10.1645/ge-3128.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Angiostrongylus is a metastrongylid nematode genus that includes species found in carnivores, rodents, and occasionally primates (including humans). About 100 species of wild sigmodontine rodents occur in Argentina, 16 of which are species of Akodon. The lungs of Akodon azarae and Akodon dolores from Sierra de la Ventana, Buenos Aires, Argentina, were examined, and 2 of 10 A. dolores specimens were positive for angiostrongylosis, showing macroscopic lesions of verminous pneumonia. Adults found were identified as Angiostrongylus morerai. Histopathology of the lungs revealed multiple nodules in the interstitium, alveoli, and vessels, resulting in interstitial fibrosis and the destruction of small capillaries and arterioles. Since extensive pathology in the lung was noted here from only 2 adults, it is probable that heavier infections may cause mortality in their hosts. This is the first record of this nematode species from A. dolores , expanding its geographic distribution to the southwest of Buenos Aires Province, and the first description of the histopathology of larval angiostrongylosis in a wild rodent from South America.
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Affiliation(s)
- María del Rosario Robles
- Centro de Estudios Parasitológicos y de Vectores CEPAVE, CCT-CONICET-La Plata, Universidad Nacional de la Plata, Calle 2 #584, La Plata 1900, Buenos Aires, Argentina.
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Digiani MC, Notarnicola J, Navone GT. The genus Guerrerostrongylus (Nematoda: Heligmonellidae) in cricetid rodents from the Atlantic rain forest of Misiones, Argentina: emended description of Guerrerostrongylus zetta (Travassos, 1937) and description of a new species. J Parasitol 2012; 98:985-91. [PMID: 22494032 DOI: 10.1645/ge-3075.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Two species of Guerrerostrongylus Sutton and Durette-Desset, 1991, are reported in cricetid rodents from the Atlantic rain forest of Misiones, Argentina. Guerrerostrongylus zetta (Travassos, 1937) is redescribed on the basis of material collected from Oligoryzomys nigripes from Argentina and material loaned by CHIOC from Brazil. It is characterized by a synlophe with about 40-45 (35-48) well-developed cuticular ridges, caudal bursa with long rays 6 and dorsal ray divided at mid-length, and well-sclerotized spicules with marked twisting. It was found with a prevalence of 100% in O. nigripes (14 hosts examined); however, it was not found in its type host Nectomys squamipes (4 hosts examined). Guerrerostrongylus ulysi n. sp., which is described from Sooretamys angouya , differs from the remaining species in the genus mainly by a synlophe with a strong reduction of the cuticular ridges and struts on the right side, and by a heart-shaped caudal bursa, with short rays 6 and a dorsal ray divided distally. It was found with a prevalence of 100% in 5 hosts examined.
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Affiliation(s)
- María Celina Digiani
- División Zoología Invertebrados, Museo de La Plata. Paseo del Bosque s/n, (1900) La Plata, Argentina.
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Carballo MC, Cremonte F, Navone GT, Timi JT. Similarity in parasite community structure may be used to trace latitudinal migrations of Odontesthes smitti along Argentinean coasts. J Fish Biol 2012; 80:15-28. [PMID: 22220887 DOI: 10.1111/j.1095-8649.2011.03125.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The aims of this study were to determine the existence of migratory movements and to identify ecological stocks of the silverside Odontesthes smitti along its distribution in the Southern Atlantic Ocean, using metazoan parasites as biological tags. Samples were obtained from San José Gulf (SJ) (42° 25' S; 64° 07' W) and Nuevo Gulf (NG) (42° 47' S; 65° 02' W) in north Patagonia during winter and summer and in waters off Mar del Plata (MDP) (38° 03' S; 57° 32' W), Bonaerense region, during winter. Fifteen parasite species were collected. Multivariate statistical procedures on parasite community data showed strong effect of host size on the structure of parasite assemblages. Taking into account the variations among samples due to host size, the differential structure of parasite communities between SJ and NG suggests that fish inhabiting these localities could belong to different ecological stocks. Fish from MDP and SJ caught in summer showed similar composition in their parasite assemblages, which is congruent with a migratory cycle that implies that fish caught in MDP during winter inhabit SJ during summer. Further evidence of the Patagonian origin of MDP O. smitti is the presence of the digenean Proctotrema bartolii in fish from both regions. Proctotrema bartolii is acquired by O. smitti only in the Magellanic province, where its intermediate host, Darina solenoides, is distributed. The analyses suggest that O. smitti inhabiting north Patagonian gulfs could belong to different ecological stocks and that O. smitti caught in MDP could have come from SJ.
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Affiliation(s)
- M C Carballo
- Centro de Estudios Parasitológicos y de Vectores (CCT La Plata-CONICET-Universidad Nacional de La Plata), Calle 2 No 584, 1900 La Plata, Buenos Aires, Argentina.
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Zonta ML, Oyhenart EE, Navone GT. Nutritional vulnerability in Mbyá-Guaraní adolescents and adults from Misiones, Argentina. Am J Hum Biol 2011; 23:592-600. [PMID: 21681847 DOI: 10.1002/ajhb.21175] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2010] [Revised: 02/08/2011] [Accepted: 03/08/2011] [Indexed: 11/08/2022] Open
Abstract
OBJECTIVES The aim of this study was to evaluate the nutritional status and body composition in Mbyá-Guaraní adolescents and adults from three communities in the Province of Misiones, in northern Argentina. METHODS Anthropometric parameters were analyzed in 45 individuals (aged 14-60). Data were transformed to z-scores using NHANES I and II. RESULTS Ninety-three percent of the sample showed some kind of malnutrition (undernutrition and/or excess of weight). Stunting and overweight reached the highest prevalences (85.0 and 10.0%, respectively). The most Mbyá people were found to have low arm muscle and fat areas. They also tended to have shorter than normal lower limbs. Centralized obesity was evident in both sexes and in all the age intervals. CONCLUSIONS Extreme poverty, together with changes in life habits and diet composition, resulted in decrease of body size and changes in body proportions and composition. Although these changes could be considered as an adaptive response to the chronic exposure of these populations to adverse environmental conditions, they would favor the co-occurrence of malnutrition and overweight in a single scenario, and consequently increase the risk of infectious and nontransmissible diseases.
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Affiliation(s)
- María L Zonta
- Centro de Estudios Parasitológicos y de Vectores (CEPAVE), UNLP-CCT CONICET La Plata, Argentina.
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Carballo MC, Navone GT, Cremonte F. Parasites of the Silversides Odontesthes smitti and Odontesthes nigricans (Pisces: Atherinopsidae) from Argentinean Patagonia. COMP PARASITOL 2011. [DOI: 10.1654/4445.1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Navone GT, Ezquiaga MC, Notarnicola J, Jiménez FA. A New Species of Cyclobulura (Nematoda: Subuluridae) from Zaedyus pichiy and Chaetophractus vellerosus (Xenarthra: Dasypodidae) in Argentina. J Parasitol 2010; 96:1191-6. [DOI: 10.1645/ge-2549.1] [Citation(s) in RCA: 6] [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: 11/10/2022] Open
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Notarnicola J, Navone GT. Litomosoides pardinasi n. sp. (Nematoda, Onchocercidae) from two species of cricetid rodents in northern Patagonia, Argentina. Parasitol Res 2010; 108:187-94. [DOI: 10.1007/s00436-010-2051-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2010] [Accepted: 09/05/2010] [Indexed: 10/19/2022]
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Diaz JI, Cremonte F, Navone GT. Helminths of the Magellanic Penguin, Spheniscus magellanicus (Sphenisciformes), During the Breeding Season in Patagonian Coast, Chubut, Argentina. COMP PARASITOL 2010. [DOI: 10.1654/4441.1] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Zonta ML, Oyhenart EE, Navone GT. Nutritional status, body composition, and intestinal parasitism among the Mbyá-Guaraní communities of Misiones, Argentina. Am J Hum Biol 2010; 22:193-200. [PMID: 19642206 DOI: 10.1002/ajhb.20977] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Indigenous communities in Argentina represent socially and economically neglected populations. They are living in extreme poverty and environmental degradation conditions. New information about health status and socio-environmental features is urgently needed to be applied in future sanitary policies. Present study describes the nutritional status, body composition, and intestinal parasitism among Mbyá-Guaraní children from three communities in the Misiones Province. Anthropometric parameters were analyzed for 178 individuals (aged 1-14). Data were transformed to z-scores using NHANES I and II. Stunting showed the greatest prevalence (44.9%). Children were found to have low arm circumference and low arm muscle area, although with tricipital skinfold value near to the reference. They also tend to have shorter than normal lower limbs. Fecal samples and anal brushes (for Enterobius vermicularis) were collected in 45 children (aged 1-13). Ritchie's sedimentation and Willis' flotation techniques were used to determine parasitoses. Ninety five percent of children were infected with at least one species and 81.4% were polyparasitized. The higher prevalences corresponded to Blastocystis hominis, hookworms (Ancylostoma duodenale/Necator americanus), and Entamoeba coli. Associations occurred between hookworms with B. hominis/E. coli and B. hominis with nonpathogenic amoebas. Thirty nine percent of the children with stunting presented B. hominis, Strongyloides, and hookworms. Our results indicate that this indigenous population is subjected to extreme poverty conditions and is one of the most marginalized in this country. Severe growth stunting and parasitic infection are still quite common among Mbyá children affecting about half of them along with significant changes in body composition and proportions.
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Affiliation(s)
- M L Zonta
- Centro de Estudios Parasitológicos y de Vectores, UNLP-CCT CONICET-La Plata, La Plata-Buenos Aires, Argentina.
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Diaz JI, Fonteneau F, Panisse G, Cremonte F, Navone GT. Redescription of Ingliseria cirrohamata (Linstow, 1888) (Nematoda: Acuariidae), Including New Hosts and Geographical Records. J Parasitol 2009; 95:396-402. [DOI: 10.1645/ge-1758.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2008] [Accepted: 08/26/2008] [Indexed: 11/10/2022] Open
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Garbin LE, Diaz JI, Cremonte F, Navone GT. A New Anisakid Species Parasitizing the Imperial Cormorant Phalacrocorax atriceps From the North Patagonian Coast, Argentina. J Parasitol 2008; 94:852-9. [DOI: 10.1645/ge-1369.1] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2007] [Accepted: 12/11/2007] [Indexed: 11/10/2022] Open
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Robles MDR, Navone GT, Kinsella JM. A new angiostrongylid (Nematoda) species from the pulmonary arteries of Akodon azarae (Rodentia: Cricetidae) in Argentina. J Parasitol 2008; 94:515-9. [PMID: 18564753 DOI: 10.1645/ge-1340.1] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Angiostrongylus morerai n. sp. (Nematoda: Angiostrongylidae) is described from the pulmonary arteries of Azara's grass mouse Akodon azarae (Rodentia: Cricetidae) in Argentina. It is distinguished from its congeners principally by the morphology of the dorsal ray, which is as long, or longer, than the externodorsals and has 2 long branches; the spicule lengths are also greater (400-465 microm). This is the first record of a metastrongyloid from sigmodontine rodents in Argentina.
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Affiliation(s)
- Maria del Rosario Robles
- Centro de Estudios Parasitológicos y de Vectores (CEPAVE) (CONICET-UNLP), 1900 La Plata, Argentina.
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Robles MDR, Carballo MC, Navone GT. A new species of Liniscus (Nematoda: Trichuridae) from Oxymycterus rufus and Akodon azarae (Cricetidae: Sigmodontinae) in Buenos Aires Province, Argentina. J Parasitol 2008; 94:909-17. [PMID: 18576745 DOI: 10.1645/ge-1375.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2007] [Accepted: 01/04/2008] [Indexed: 11/10/2022] Open
Abstract
Liniscus diazae n. sp. (Nematoda: Trichuridae) is described from the urinary bladder of Oxymycterus rufus and Akodon azarae (Cricetidae: Sigmodontinae) from Buenos Aires Province, Argentina. Liniscus diazae can be differentiated from its congeners by having a much longer spicule and without an elevated vulva. In addition, L. diazae can be distinguished from L. incrassatus and L. himizu by having a longer body length. Males are similar in posterior width to L. papillosus and L. himizu, but thinner than L. incrassatus and L. maseri. This is the second record of a capillarid from mammals in Argentina. An updated list of capillarid species of rodents and insectivores from North America, with their synonyms, hosts, sites of infection, and geographic distribution, is provided.
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Affiliation(s)
- María del Rosario Robles
- Centro de Estudios Parasitológicos y de Vectores (CEPAVE) (CONICET-UNLP), La Plata, Buenos Aires, Argentina.
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Notarnicola J, Pinto CM, Navone GT. Host Occurrence and Geographical Distribution of Dipetalonema spp. (Nematoda: Onchocercidae) in Neotropical Monkeys and the First Record of Dipetalonema gracile in Ecuador. COMP PARASITOL 2008. [DOI: 10.1654/4284.1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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del Rosario Robles M, Navone GT, Villafañe IEG. New Morphological Details and First Records of Heterakis spumosa and Syphacia muris from Argentina. COMP PARASITOL 2008. [DOI: 10.1654/4277.1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Carballo MC, Navone GT. A new Huffmanela species (Nematoda: Trichosomoididae) parasitizing atherinid fishes in north Patagonian Gulfs, Argentina. J Parasitol 2007; 93:377-82. [PMID: 17539422 DOI: 10.1645/ge-971r.1] [Citation(s) in RCA: 11] [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: 11/10/2022] Open
Abstract
Huffmanela moraveci n. sp. (Nematode: Trichosomoididae) is described from the skin of fins and gills of the silversides Odontesthes smitti Lahille, 1949, and Odontesthes nigricans Richardson, 1848 (Pisces: Atheriniformes), from southwestern Atlantic coast, on the basis of the morphology of adults and eggs found in the host tissues. Huffmanela moraveci n. sp. can be distinguished from Huffmanela carcharini, H. banningi, H. japonica, H. mexicana, H. paronai, H. schouteni, H. shikokuensis, H. branchialis, H. filamentosa, H. ossicola, and H. lata by the size and shape of the eggs. The adult stage of H. moraveci n. sp. can be differentiated from H. hufmani and H. canadensis by the position of the nerve ring and by the total esophagus length/body length ratio. Huffmanela moraveci n. sp. also differs from H. huffmani by the presence of bacillary bands and by the body length. This is the first report of a species of Huffmanela in South America, the first report of a species of Huffmanela with Odontesthes spp. as host, and the third known adult form in the genus.
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Affiliation(s)
- María C Carballo
- Centro Nacional Patagónico, CONICET, Boulevard Brown No. 3500, 9120 Puerto Madryn, Argentina.
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Garbin LE, Navone GT, Diaz JI, Cremonte F. FURTHER STUDY OF CONTRACAECUM PELAGICUM (NEMATODA: ANISAKIDAE) IN SPHENISCUS MAGELLANICUS (AVES: SPHENISCIDAE) FROM ARGENTINEAN COASTS. J Parasitol 2007; 93:143-50. [PMID: 17436954 DOI: 10.1645/ge-875r1.1] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [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: 11/10/2022] Open
Abstract
The anisakid species Contracaecum pelagicum Johnston and Mawson, 1942, is reported for first time at 2 different sites on the Argentine coast (Peninsula Valdés, 42 degrees 04'S, 63 degrees 38'W and Mar del Plata, 38 degrees 05'S, 57 degrees 38'W), parasitizing the Magellanic penguin, Spheniscus magellanicus Foster. Morphometric analysis and further studies of adult specimens of C. pelagicum were done using light and scanning electron microscopy. The presence of bifurcated interlabia differentiates the present species from most others in the genus, except (1) from Contracaecum travassosi, which possesses higher interlabia and longer spicules, and a blunt, more constrained tail; (2) from Contracaecum rudolphii, which has longer spicules, blunter spicule tips, postparacloacal papillae with oblique disposition, and a blunter constrained tail; (3) from Contracaecum eudyptulae, which has a blunter tail and longer spicules; and (4) from Contracaecum variegatum, which possesses smaller-diameter, hooklike extensions on auricle lips, and a less robust interlabium with a more marked furrow. In this paper we present the first detailed description of C. pelagicum adults from S. magellanicus. Morphometric data between adult specimens of C. pelagicum from S. magellanicus and those from the black-browed albatross, Diomedea melanophris Temminck, from Argentinean coasts were compared. In addition, fourth-stage larvae that parasitized both hosts were assigned to a nondeterminated Contracaecum species. Ecological parameters for adults and larvae nematodes were calculated.
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Affiliation(s)
- Lucas E Garbin
- Centro de Estudios Parasitológicos y de Vectores (CONICET-UNLP), Calle 2 #584, 1900 La Plata, Argentina.
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Cremonte F, Etchegoin J, Diaz JI, Navone GT. Larval Spirurida (Nematoda) Parasitizing Two Crab Species (Uca uruguayensis and Chasmagnathus granulatus) from the Southwest Atlantic Coast of Argentina. COMP PARASITOL 2007. [DOI: 10.1654/4222.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Digiani MC, Navone GT, Durette-Desset MC. The systematic position of some nippostrongyline nematodes (Trichostrongylina: Heligmosomoidea) parasitic in Argentinean sigmodontine rodents. Syst Parasitol 2006; 67:87-92. [PMID: 17195037 DOI: 10.1007/s11230-006-9071-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2006] [Accepted: 05/04/2006] [Indexed: 10/23/2022]
Abstract
The systematic position of two nippostrongyline nematodes described from Argentinean sigmodontine rodents is clarified. The first species, Hassalstrongylus multiovatus Suriano & Navone, 1992, parasitic in Akodon simulator Thomas from the province of Tucumán, was studied on the basis of type and voucher material. H. multiovatus is proposed as a junior synonym of Trichofreitasia lenti Sutton & Durette-Desset, 1991, a parasite described from Oligoryzomys flavescens (Waterhouse) in the province of Buenos Aires. The holotype and three of seven paratypes deposited as H. multiovatus were identified as T. lenti. One male paratype was identified as Guerrerostrongylus uruguayensis Sutton & Durette-Desset, 1991, a parasite described from O. flavescens in Uruguay. Three female paratypes were identified as Guerrerostrongylus sp. The second species, Stilestrongylus scapteromys Suriano & Navone, 1996, parasitic in Scapteromys aquaticus Thomas from the province of Buenos Aires, was studied on voucher material. Stilestrongylus scapteromys and Malvinema frederici Digiani, Sutton & Durette-Desset, 2003, the type-species of Malvinema Digiani, Sutton & Durette-Desset, 2003, were described from the same host and geographical region. As they are considered to refer to one and the same taxon, the new combination Malvinema scapteromys n. comb. is proposed for this species.
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Affiliation(s)
- María Celina Digiani
- División Zoología Invertebrados, Museo de La Plata, Paseo del Bosque s/n (1900), La Plata, Argentina.
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Robles MDR, Navone GT. Redescription of Trichuris laevitestis (Nematoda: Trichuridae) from Akodon azarae and Scapteromys aquaticus (Sigmodontinae: Cricetidae) in Buenos Aires Province, Argentina. J Parasitol 2006; 92:1053-7. [PMID: 17152950 DOI: 10.1645/ge-827r.1] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [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: 11/10/2022] Open
Abstract
Trichuris spp. have a cosmopolitan distribution; the species are typically identified by features related to the reproductive system. Trichuris laevitestis was described on the basis of specimens collected from rodents captured in Punta Lara, Buenos Aires Province, Argentina. Here, T. laevitestis is redescribed considering new and relevant morphological features of diagnostic importance such as arrangement of spines on the spicular sheath, spicule length, length and shape of proximal cloacal tube, paracloacal papillae, features of the vulva, and ratios between different features. Akodon azarae and Scapteromys aquaticus specimens captured in the Rio de la Plata and Paraná Guazú River, and at Cerro de la Gloria, Buenos Aires Province, Argentina, were examined. The bacillary band of T. laevitestis is described, and several morphological details of this species are illustrated and recorded by scanning electron microscopy for the first time. The redescription of T. laevitestis confirms its identity as a valid species. In addition, the present study extends the geographical distribution of the species.
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Affiliation(s)
- María del Rosario Robles
- Centro de Estudios Parasitológicos y de Vectores (CONICET-UNLP), Calle 2 #584 (1900) La Plata, Argentina.
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Abstract
A new species of Trichuris is described. Trichuris pardinasi n. sp. was recovered from Phyllotis xanthopygus Waterhouse (Rodentia: Muridae: Phyllotini) in Sierra de la Ventana, Buenos Aires Province, and Pampa de Achala, Córdoba Province (Argentina). This is the first record of Trichuris parasitizing Phyllotini rodents. The new species can be differentiated from the other 10 species parasitizing rodents from South America by the absence of the spicular tube, spicular sheath with spines uniformly distributed, the length of spicule, the J-shaped proximal cloacal tube, and the nonprotrusive vulva. Also, a description of the bacillary band is provided. The present and the future findings of shared parasite fauna from both populations of P. xanthopygus in these disjunct areas will support the hypothesis of a continuous distribution of this host species at a past time.
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Affiliation(s)
- Maria del Rosario Robles
- Centro de Estudios Parasitológicos y de Vectores, CONICET-UNLP, Calle 2 # 584 (1900) La Plata, Argentina.
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Diaz JI, Cremonte F, Navone GT, Laurenti S. Adults and larvae of Skrjabinocerca canutus n. sp. (Nematoda: Acuariidae) from Calidris canutus rufa (Aves: Scolopacidae) on the southern Southwest Atlantic coast of South America. Syst Parasitol 2005; 60:113-23. [PMID: 15841348 DOI: 10.1007/s11230-004-1379-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/10/2004] [Indexed: 11/30/2022]
Abstract
Adults and larvae of a new species of Skrjabinocerca Shikhobalova, 1930 (Nematoda: Acuarioidea) are described on the basis of light and scanning electron microscope studies. Specimens were recovered from Calidris canutus rufa Wilson (Aves: Scolopacidae) from the Southwest Atlantic coast of Uruguay. Data on the hosts, localities and main features of the four previously described species of the genus are provided. S. canutus n. sp. can be distinguished its congeners by a combination of the following characters: non-recurrent cordons, shorter right spicule and possession of a delicate finger-like projection on the distal end of the left spicule. S. prima Shikhobalova, 1930 has a left spicule which is stilletto-shaped and sharply pointed, S. europaea Wong & Anderson, 1993 has recurrent cordons, S. americana Wong & Anderson, 1993 possesses two delicate digitiform projections on the distal end of its left spicule and S. bennetti Bartlett & Anderson, 1996 has subequal spicules.
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Affiliation(s)
- Julia I Diaz
- Centro Nacional Patagónico (CONICET), Boulevard Brown No. 3500, 9120 Puerto Madryn, Argentina
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Diaz JI, Cremonte F, Navone GT. First Record of the Acuarioid Nematode Paracuaria adunca from South America, with New Morphological Details and Discussion of Cordons. COMP PARASITOL 2004. [DOI: 10.1654/4110] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Campbell ML, Gardner SL, Navone GT. A new species of Mathevotaenia (Cestoda: Anoplocephalidae) and other tapeworms from marsupials in Argentina. J Parasitol 2004; 89:1181-5. [PMID: 14740908 DOI: 10.1645/ge-1778] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [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: 11/10/2022] Open
Abstract
Cestodes are reported from Didelphis albiventris Lund, 1840 and Micoureus cinereus Temminck, 1824 (Marsupialia: Didelphidae) in Argentina. These include a new species of Mathevotaenia Akhumyan, 1946 (Cestoda: Anoplocephalata) as well as M. bivittata (Janicki, 1904) and an unknown hymenolepidid cestode. Mathevotaenia argentinensis n. sp. is characterized by a relatively narrow strobila, 18-37 mm in total length and 1.0-1.5 mm in maximum width, 135-163 craspedote proglottids, 19-27 testes, and a muscular genital atrium. This species differs from M. didelphidis (Rudolphi, 1819) in the disposition of the genital ducts between the excretory canals and in the entrance of the vagina into the genital atrium posterior to the cirrus pouch; from M. paraguayae Schmidt and Martin, 1978 in the disposition of the genital ducts, absence of a seminal receptacle, and presence of an armed cirrus; and from M. boliviana Sawada and Harada, 1986 and M. pennsylvanica Chandler and Melvin, 1951 in the presence of an armed cirrus. Linstowiines appear to be the dominant cestodes in New World marsupials, with M. bivittata representing the most prevalent and widely distributed species. The hymenolepidid is the first record of this family in Neotropical marsupials.
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Affiliation(s)
- Mariel L Campbell
- Museum of Southwestern Biology, Division of Mammals, University of New Mexico, Albuquerque, New Mexico 87131, USA
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Cremonte F, Navone GT, Gosztonyi AE, Kuba L. Redescription of Rhabdochona (Rhabdochona) acuminata (Nematoda: Rhabdochonidae) from Freshwater Fishes from Patagonia (Argentina), the Geographical Implications. J Parasitol 2002. [DOI: 10.2307/3285535] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Cremonte F, Navone GT, Gosztonyi AE, Kuba L. Redescription of Rhabdochona (Rhabdochona) acuminata (Nematoda: Rhabdochonidae) from freshwater fishes from Patagonia (Argentina), the geographical implications. J Parasitol 2002; 88:934-41. [PMID: 12435134 DOI: 10.1645/0022-3395(2002)088[0934:rorran]2.0.co;2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [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: 11/10/2022] Open
Abstract
Rhabdochona (Rhabdochona) acuminata is redescribed from specimens parasitizing Diplomystes mesembrinus (Siluriformes: Diplomystidae) and Percichthys trucha (Perciformes: Percichthyidae) from the Chubut River, Patagonia, Argentina. The present report is the first record of this nematode in D. mesembrinus; it also confirms P. trucha as host and Patagonia as a region of distribution for R. (R.) acuminata. Morphological features of the species were described using light and scanning electron microscopy. When compared with previous descriptions from Brazil, very similar morphology is observed. But large morphometric variability is found, mainly in body size, spicule ratio, and number and arrangement of pre- and postcloacal papillae.
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Affiliation(s)
- Florencia Cremonte
- Centro de Estudios Parasitológicos y de Vectores (CONICET-UNLP), La Plata, Argentina.
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Tim JT, Navone GT, Sardella NH. Redescription of Ichthyofilaria argentinensis Incorvaia, 1999 (Nematoda: Philometridae) parasite of Merluccius hubbsi (Pisces: Merlucciidae) from Argentina. Folia Parasitol (Praha) 2002; 48:139-42. [PMID: 11437128 DOI: 10.14411/fp.2001.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [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: 11/19/2022]
Abstract
Ichthyofilaria argentinensis Incorvaia, 1999 (Nematoda: Philometridae) is redescribed from type specimens and from parasites collected from the swim bladder of Argentine hakes Merluccius hubbsi Marini, 1933 caught at the Gulf of San Jorge (46 degrees 30'S, 66 degrees 30'W), Argentine Sea, in July, 1998. Sixteen out of 80 hakes (20%) were found to be parasitised by gravid females of this philometrid. After revision of both these nematodes and type material, the following differences from the original description of the species were observed: (a) cuticle with fine transverse striations, instead of smooth cuticle; (b) presence of cephalic papillae and a pair of amphids; (c) absence of swellings in the oesophagus; (d) oesophageal gland appendix very large and lobulate rather than small and vermiform, and (d) presence of vulva and vagina. The morphological features given in the redescription allow the confirmation of the identity of I. argentinensis as a valid species and to distinguish it from other members of the genus.
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Affiliation(s)
- J T Tim
- Departamento de Biología, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Argentina.
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Cremonte F, Digiani MC, Bala LO, Navone GT. Tetrameres (Tetrameres) megaphasmidiata n. sp. (Nematoda: Tetrameridae), a parasite of the two-banded plover, Charadrius falklandicus, and white-rumped sandpiper, Calidris fuscicollis, from Patagonia, Argentina. J Parasitol 2001; 87:148-51. [PMID: 11227882 DOI: 10.1645/0022-3395(2001)087[0148:ttmnsn]2.0.co;2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 11/10/2022] Open
Abstract
Tetrameres (Tetrameres) megaphasmidiata n. sp. is described from the proventriculus of the two-banded plover, Charadrius falklandicus, and the white-rumped sandpiper, Calidris fuscicollis, from Patagonia, Argentina. The new species shares with T. (T.) nouveli, T. (T.) paradisea, T. (T.) prozeskyi, T. paraaraliensis, T. (T.) cladorhynchi, and T. lobybicis the absence of the right spicule and the presence of 4 rows of somatic spines. Tetrameres (T.) megaphasmidiata n. sp. differs from the first 4 species mainly by its longer left spicule. The new species can be distinguished from T. (T.) cladorhynchi by the extension of the lateral alae, the number and arrangement of the caudal papillae, and the absence of polar filaments in the eggs. Tetrameres lobybicis differs from the new species by having shorter rows of dorsal spines and a different number and arrangement of the caudal papillae. This report is the first record of a species of Tetrameres in C. falklandicus and C. fuscicollis.
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Affiliation(s)
- F Cremonte
- Centro de Estudios Parasitológicos y de Vectores (CONICET, UNLP), La Plata, Argentina
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Cremonte F, Digiani MC, Bala LO, Navone GT. Tetrameres (Tetrameres) megaphasmidiata n. sp. (Nematoda: Tetrameridae), a Parasite of the Two-Banded Plover, Charadrius falklandicus, and White-Rumped Sandpiper, Calidris fuscicollis, from Patagonia, Argentina. J Parasitol 2001. [DOI: 10.2307/3285192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Notarnicola J, Bain O, Navone GT. Two New Species of Litomosoides (Nematoda: Filarioidea) in Sigmodontines (Rodentia: Muridae) from Rio de La Plata Marshland, Argentina. J Parasitol 2000. [DOI: 10.2307/3285020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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