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Guerreiro Martins NB, Robles MDR, Knoff M, Navone GT, Callejón R. Rodentolepis microstoma isolated from different species of Sigmodontinae rodents (Rodentia: Cricetidae) in the Cuenca del Plata, Argentina: Morphological aspects and molecular characterization. Int J Parasitol Parasites Wildl 2022; 19:56-67. [PMID: 36043155 PMCID: PMC9420344 DOI: 10.1016/j.ijppaw.2022.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 07/08/2022] [Accepted: 07/09/2022] [Indexed: 11/28/2022]
Abstract
The purpose of this paper was to study specimens of the genus Rodentolepis isolated from eight species of Sigmodontinae rodents (Rodentia: Cricetidae) from six provinces in the Cuenca del Plata, Argentina, based on morphological, morphometric and molecular characteristics (ITS1 rDNA and cox1 mtDNA). The genetic distances among studied specimens and other Hymenolepididae from rodents available in the GenBank were analyzed and phylogenetic inferences were provided. A total of 955 specimens of Sigmodontinae rodents were examined from seven localities of six provinces in the Cuenca del Plata region in Argentina. Tapeworms were removed from the rodents’ small intestines. Conventional studies were used for the morphological and molecular analysis. Specimens of R. microstoma were identified. An amended diagnosis and detailed morphological description of this species is provided. The molecular analyses showed that the specimens studied form the same clade as that of R. microstoma previously studied from other hosts and regions. The genetic polymorphisms of R. microstoma observed corresponded to different groups of species hosts and regions. Moreover, eight species of sigmodontine rodents and 33 localities from the Cuenca del Plata region in Argentina constitute new host and geographical records. This study shows the importance of using integrative taxonomic approaches that combine morphological and molecular characters to understand biological diversity. Moreover, the discovery of R. microstoma in humans suggests the importance of further studies on this zoonotic cestode. This study provides important data on the taxonomy and distribution of R. microstoma to advance knowledge of the transmission dynamics of this parasite. Rodentolepis microstoma is recorded parasitizing Sigmodontinae rodents in Argentina. Morphological variations are observed in R. microstoma between host species and areas. Amended diagnosis of Rodentolepis microstoma is provided. Phylogenetic inferences of Hymenolepididae from rodents are proposed.
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Affiliation(s)
- Natalia Beatriz 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, Buenos Aires, Argentina
- Corresponding author.
| | - 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, Buenos Aires, Argentina
| | - Marcelo Knoff
- Laboratório de Helmintos Parasitos de Vertebrados, Instituto Oswaldo Cruz, Fiocruz, Avenida Brasil, 4365, Manguinhos, Rio de Janeiro, Brazil
| | - Graciela Teresa 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, Buenos Aires, Argentina
| | - Rocío Callejón
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
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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] [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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Costa NA, Cardoso TDS, Costa-Neto SFD, Alvarez MR, Maldonado Junior A, Gentile R. Helminths of sigmodontine rodents in an agroforestry mosaic in the Brazilian Atlantic Forest: Patterns and processes of the metacommunity structure. Int J Parasitol Parasites Wildl 2022; 18:82-91. [PMID: 35519506 PMCID: PMC9062209 DOI: 10.1016/j.ijppaw.2022.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 04/18/2022] [Accepted: 04/18/2022] [Indexed: 10/28/2022]
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Serrano PC, Digiani MC, Gómez-Muñoz MDLA, Notarnicola J, Robles MDR, Navone GT. Hassalstrongylus dollfusi (Nematoda, Heligmonellidae): rediscovery in native South American rodents, six decades after its description. Parasite 2021; 28:80. [PMID: 34889736 PMCID: PMC8663770 DOI: 10.1051/parasite/2021077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 11/16/2021] [Indexed: 12/05/2022] Open
Abstract
Hassalstrongylus dollfusi (Díaz-Ungría, 1963) Durette-Desset, 1971 was described in a wild house mouse, Mus musculus, from Venezuela and, since then, has never been reported again in the type host or in any other host. In this work, specimens assignable to H. dollfusi were found at 10 localities in Northeast Argentina, in five species of sigmodontine rodents. The nematodes were attributed to H. dollfusi based on diagnostic characters such as: synlophe with 22-31 subequal ridges; in males, hypertrophy of right ray 4 of the male bursa, thickening of the dorsal ray and bases of rays 8, distal tip of the spicules bent and spoon shaped; and, in females, presence of subventral postvulvar alae supported by hypertrophied struts. The new host recorded are: Oligoryzomys fornesi, O. flavescens, O. nigripes, Holochilus chacarius and Akodon azarae. The parasite showed a strong preference for host species of Oligoryzomys, which appear to act as primary hosts. The parasite could be present, parasitizing different species of Oligoryzomys, in a geographic area from the type locality in Venezuela southward to north Corrientes in Argentina. It has not been reported from populations of Oligoryzomys spp. of the Argentinean and Brazilian Atlantic Forest, nor south of 28° S, which may be explained by constraints in the environmental conditions required by the free-living stages of the parasite. This study provides the first identification and redescription of H. dollfusi in southern South America, from autochthonous hosts, six decades after its description.
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Affiliation(s)
- Paula Carolina Serrano
- CONICET-Consejo Nacional de Investigaciones Científicas y Técnicas Argentina
- División Zoología Invertebrados, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata Paseo del Bosque s/n 1900 La Plata Argentina
| | - María Celina Digiani
- CONICET-Consejo Nacional de Investigaciones Científicas y Técnicas Argentina
- División Zoología Invertebrados, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata Paseo del Bosque s/n 1900 La Plata Argentina
| | - María de los Angeles Gómez-Muñoz
- Laboratorio Biología de los Parásitos, Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste Av. Libertad 5460 3400 Corrientes Argentina
| | - Juliana Notarnicola
- Instituto de Biología Subtropical (CONICET - Universidad Nacional de Misiones) Bertoni 85 3370 Puerto Iguazú Argentina
| | - María del Rosario Robles
- Centro de Estudios Parasitológicos y de Vectores (CCT La Plata-CONICET-UNLP), 120 e/61 y 62 B1900FWA La Plata Argentina
| | - Graciela Teresa Navone
- Centro de Estudios Parasitológicos y de Vectores (CCT La Plata-CONICET-UNLP), 120 e/61 y 62 B1900FWA La Plata Argentina
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Lucio CDS, Gentile R, Cardoso TDS, de Oliveira Santos F, Teixeira BR, Maldonado Júnior A, D'Andrea PS. Composition and structure of the helminth community of rodents in matrix habitat areas of the Atlantic forest of southeastern Brazil. Int J Parasitol Parasites Wildl 2021; 15:278-289. [PMID: 34336593 PMCID: PMC8318825 DOI: 10.1016/j.ijppaw.2021.07.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 06/24/2021] [Accepted: 07/07/2021] [Indexed: 12/16/2022]
Abstract
The predominant landscape of the Atlantic Forest of the Brazilian state of Rio de Janeiro is made up of forest fragments surrounded by a matrix of modified habitat, which may influence the occurrence and distribution of host species and their parasites in comparison with the original continuous forest. The present study describes the structure, composition, and diversity of the helminth community found in rodents in two areas of an open matrix of different status of conservation. The abundance, intensity, and prevalence were calculated for each helminth species in rodent species. The influence of biotic and abiotic factors on the abundance and prevalence of the helminth species was also investigated. Community structure was analyzed based on the beta diversity and a bipartite network. Nine helminth species were recovered from Akodon cursor, Necromys lasiurus and Mus musculus, with the greatest helminth species richness being recorded in A. cursor (S = 8), followed by N. lasiurus (S = 6), and M. musculus (S = 3). Only three of the helminths recorded in A. cursor had been recorded previously in this rodent in the Atlantic Forest, where 12 different helminths have been recorded, so that the other five are new occurrences for this rodent. All the helminth species of N. lasiurus had been reported previously in this rodent in the Cerrado and Caatinga regions. Mus musculus was infected with the same helminths as the local fauna. Host species and locality were the most important factors influencing helminth abundance and prevalence. Beta-diversity was high for infracommunities indicating more substitutions of helminth species than losses among individuals. Three helminths species were shared by the three host species. The reduced beta-diversity observed in the component communities was consistent with the overlap observed in the helminth fauna of the host species.
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Affiliation(s)
- Camila dos Santos Lucio
- Programa de Pós-Graduação em Biodiversidade e Saúde / IOC/Fiocruz-RJ, Brazil
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios- IOC/Fiocruz-RJ, Brazil
| | - Rosana Gentile
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios- IOC/Fiocruz-RJ, Brazil
| | - Thiago dos Santos Cardoso
- Programa de Pós-Graduação em Biodiversidade e Saúde / IOC/Fiocruz-RJ, Brazil
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios- IOC/Fiocruz-RJ, Brazil
- Fundação Oswaldo Cruz, Programa Fiocruz de Fomento à Inovação - INOVA FIOCRUZ, Av. Brasil 4365, Rio de Janeiro, CEP 21040-360, RJ, Brazil
| | - Fernando de Oliveira Santos
- Programa de Pós-Graduação em Biodiversidade e Saúde / IOC/Fiocruz-RJ, Brazil
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios- IOC/Fiocruz-RJ, Brazil
| | | | - Arnaldo Maldonado Júnior
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios- IOC/Fiocruz-RJ, Brazil
| | - Paulo Sergio D'Andrea
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios- IOC/Fiocruz-RJ, Brazil
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Benatti D, Andrietti LF, Cândido Júnior JF, Vogliotti A, Moraes MFD, Tebaldi JH, Hoppe EGL. Rodent helminths in fragmented Atlantic Forest areas in the western region of the state of Paraná. REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA = BRAZILIAN JOURNAL OF VETERINARY PARASITOLOGY : ORGAO OFICIAL DO COLEGIO BRASILEIRO DE PARASITOLOGIA VETERINARIA 2021; 30:e009521. [PMID: 34259744 DOI: 10.1590/s1984-29612021058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 06/01/2021] [Indexed: 11/21/2022]
Abstract
Rodents are small mammals that can be parasitized by various helminths. This study aimed to identify and describe the ecological indicators of infection in rodents captured in fragments of the Atlantic Forest in the western region of Paraná State, Brazil. Sixty-eight specimens of five rodent species were collected, necropsied, and inspected in search of helminths. The parasites were stored in 70% ethanol, morphologically identified, and counted for calculation of infection indicators. Fourteen species of helminths and one species of Crustacea were recorded: ten in Akodon montensis, four in Mus musculus, two in Thaptomys nigrita, two in Oligoryzomys nigripes, and one in Euryoryzomys russatus. The registered species of parasites were: Rodentolepis akodontis, Angiostrongylus sp., Protospirura numidica criceticola, Trichuris navonae, Syphacia alata, Syphacia criceti, Syphacia evaginata, Trichofreitasia lenti, Stilestrongylus aculeata, Stilestrongylus eta, Stilestrongylus gracielae, Stilestrongylus franciscanus, Stilestrongylus moreli, Stilestrongylus sp., and Pentastomida gen. sp. A positive correlation between the intensity of infection of T. navonae and T. lenti was observed with the body condition index of the host A. montensis. For all species, this study represents a new register of locality, and for eight of them a new host.
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Affiliation(s)
- Danise Benatti
- Laboratório de Enfermidades Parasitárias dos Animais Domésticos - LabEPar, Departamento de Patologia, Reprodução e Saúde Única, Faculdade de Ciências Agrárias e Veterinárias - FCAV, Universidade Estadual Paulista - UNESP, Jaboticabal, SP, Brasil
| | | | | | - Alexandre Vogliotti
- Universidade Federal da Integração Latino-Americana - UNILA, Foz do Iguaçu, PR, Brasil
| | - Marcela Figueirêdo Duarte Moraes
- Laboratório de Enfermidades Parasitárias dos Animais Domésticos - LabEPar, Departamento de Patologia, Reprodução e Saúde Única, Faculdade de Ciências Agrárias e Veterinárias - FCAV, Universidade Estadual Paulista - UNESP, Jaboticabal, SP, Brasil
| | - José Hairton Tebaldi
- Laboratório de Enfermidades Parasitárias dos Animais Domésticos - LabEPar, Departamento de Patologia, Reprodução e Saúde Única, Faculdade de Ciências Agrárias e Veterinárias - FCAV, Universidade Estadual Paulista - UNESP, Jaboticabal, SP, Brasil
| | - Estevam Guilherme Lux Hoppe
- Laboratório de Enfermidades Parasitárias dos Animais Domésticos - LabEPar, Departamento de Patologia, Reprodução e Saúde Única, Faculdade de Ciências Agrárias e Veterinárias - FCAV, Universidade Estadual Paulista - UNESP, Jaboticabal, SP, Brasil
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Cardoso TDS, de Andreazzi CS, Maldonado Junior A, Gentile R. Functional traits shape small mammal-helminth network: patterns and processes in species interactions. Parasitology 2021; 148:947-955. [PMID: 33879271 PMCID: PMC8193565 DOI: 10.1017/s0031182021000640] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 04/08/2021] [Accepted: 04/14/2021] [Indexed: 01/01/2023]
Abstract
Understanding the role of species traits in mediating ecological interactions and shaping community structure is a key question in ecology. In this sense, parasite population parameters allow us to estimate the functional importance of traits in shaping the strength of interactions among hosts and parasites in a network. The aim of this study was to survey and analyse the small mammal-helminth network in a forest reserve of the Brazilian Atlantic Forest in order to understand (i) how functional traits (type of parasite life cycle, site of infection in their host, host and parasite body length, host diet, host locomotor habit and host activity period) and abundance influence host–parasite interactions, (ii) whether these traits explain species roles, and (iii) if this relationship is consistent across different parasite population parameters (presence and absence, mean abundance and prevalence). Networks were modular and their structural patterns did not vary among the population parameters. Functional traits and abundance shaped the interactions observed between parasites and hosts. Host species abundance, host diet and locomotor habit affected their centrality and/or vulnerability to parasites. For helminths, infection niche was the main trait determining their central roles in the networks.
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Affiliation(s)
- Thiago dos Santos Cardoso
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Av. Brasil 4365, Manguinhos, 21045-900, Rio de Janeiro, RJ, Brasil
- Programa Fiocruz de Fomento à Inovação – INOVA FIOCRUZ, Fundação Oswaldo Cruz, Av. Brasil 4365, Manguinhos, 21045-900, Rio de Janeiro, RJ, Brasil
| | - Cecilia Siliansky de Andreazzi
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Av. Brasil 4365, Manguinhos, 21045-900, Rio de Janeiro, RJ, Brasil
| | - Arnaldo Maldonado Junior
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Av. Brasil 4365, Manguinhos, 21045-900, Rio de Janeiro, RJ, Brasil
| | - Rosana Gentile
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Av. Brasil 4365, Manguinhos, 21045-900, Rio de Janeiro, RJ, Brasil
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Chai JY, Cho J, Chang T, Jung BK, Sohn WM. Taxonomy of Echinostoma revolutum and 37-Collar-Spined Echinostoma spp.: A Historical Review. THE KOREAN JOURNAL OF PARASITOLOGY 2020; 58:343-371. [PMID: 32871630 PMCID: PMC7462802 DOI: 10.3347/kjp.2020.58.4.343] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 07/29/2020] [Accepted: 07/29/2020] [Indexed: 12/16/2022]
Abstract
Echinostoma flukes armed with 37 collar spines on their head collar are called as 37-collar-spined Echinostoma spp. (group) or 'Echinostoma revolutum group'. At least 56 nominal species have been described in this group. However, many of them were morphologically close to and difficult to distinguish from the other, thus synonymized with the others. However, some of the synonymies were disagreed by other researchers, and taxonomic debates have been continued. Fortunately, recent development of molecular techniques, in particular, sequencing of the mitochondrial (nad1 and cox1) and nuclear genes (ITS region; ITS1-5.8S-ITS2), has enabled us to obtain highly useful data on phylogenetic relationships of these 37-collar-spined Echinostoma spp. Thus, 16 different species are currently acknowledged to be valid worldwide, which include E. revolutum, E. bolschewense, E. caproni, E. cinetorchis, E. deserticum, E. lindoense, E. luisreyi, E. mekongi, E. miyagawai, E. nasincovae, E. novaezealandense, E. paraensei, E. paraulum, E. robustum, E. trivolvis, and Echinostoma sp. IG of Georgieva et al., 2013. The validity of the other 10 species is retained until further evaluation, including molecular analyses; E. acuticauda, E. barbosai, E. chloephagae, E. echinatum, E. jurini, E. nudicaudatum, E. parvocirrus, E. pinnicaudatum, E. ralli, and E. rodriguesi. In this review, the history of discovery and taxonomic debates on these 26 valid or validity-retained species are briefly reviewed.
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Affiliation(s)
- Jong-Yil Chai
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649, Korea
- Department of Tropical Medicine and Parasitology, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Jaeeun Cho
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649, Korea
| | - Taehee Chang
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649, Korea
| | - Bong-Kwang Jung
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649, Korea
| | - Woon-Mok Sohn
- Department of Parasitology and Tropical Medicine, and Institute of Health Sciences, Gyeongsang National University College of Medicine, Jinju 52727, Korea
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Morphological and genetic description of Moniliformis necromysi sp. n. (Archiacanthocephala) from the wild rodent Necromys lasiurus (Cricetidae: Sigmondontinae) in Brazil. J Helminthol 2020; 94:e138. [PMID: 32188515 DOI: 10.1017/s0022149x20000188] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A new species of Moniliformis Travassos, 1915 (Acanthocephala: Moniliformidae) is described from the hairy-tailed bolo mouse, Necromys lasiurus Lund, 1840 (Cricetidae: Sigmondontinae), captured in the Brazilian Cerrado, in Uberlândia, state of Minas Gerais, Brazil. The specimens were studied by light and scanning electron microscopy. Molecular phylogenies were inferred from partial nuclear large subunit ribosomal RNA gene sequences and partial mitochondrial cytochrome c oxidase subunit I gene. The new species is distinguished from other moniliformid species by the number of rows and number of hooks per row, size of the proboscis, size of the eggs, host species and geographical distribution. Molecular phylogenies and genetic distances analyses demonstrated that Moniliformis necromysi sp. n. forms a well-supported monophyletic group with sequences of other species of Moniliformis and is distinguished from them, which agrees with the morphological characteristics, allocating the new species to this genus and to the family Moniliformidae Van Cleave, 1924. This is the first moniliformid acanthocephalan described from a wild rodent in Brazil.
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Kersul MG, Costa NA, Boullosa RG, Silva AAS, Rios ÉO, Munhoz AD, Andrade-Silva BE, Maldonado A, Gentile R, Alvarez MR. Helminth communities of sigmonontine rodents in cocoa agroforestry systems in Brazil. INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE 2019; 11:62-71. [PMID: 32274328 PMCID: PMC7131998 DOI: 10.1016/j.ijppaw.2019.11.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 11/18/2019] [Accepted: 11/30/2019] [Indexed: 12/26/2022]
Abstract
Agroforestry is an alternative kind of land use where the native vegetation is surrounded or intercalated by crops of economic interest. This system may maintain species richness by promoting the habitat heterogeneity or serving as ecological corridors. The aim of this study was to describe the gastrointestinal helminth fauna and to analyse the parasitological parameters of the helminth communities of six sigmodontine rodents in a cocoa agroforestry system in the municipality of Ilhéus, state of Bahia, Northeast Brazil. This is a novel study of helminth fauna in this kind of agroforestry. Rodents were captured in live-traps and euthanised for helminth recovery. Specimens were counted and identified to the species level whenever possible. Helminth abundance, intensity, and prevalence were calculated for each species and each host. The total abundance and prevalence of helminths were compared among localities and three attributes of the host: species, gender and age using generalised linear models. Considering all rodents, 52.14% of them were parasitised with at least one helminth species. Eight nematode species were identified and another seven morphospecies were identified to the genus level. The most abundant species were Hassalstrongylus epsilon, Stilestrongylus eta, Guerrerostrongylus zetta, and Syphacia alata. The opportunistic host species Oligoryzomys nigripes and Akodon cursor, besides the water rat Nectomys squamipes, were the most infected species for helminth parasites. Hylaeamys seuanezi was also an important host with the highest helminth species richness. This is the first report of the helminth fauna for this host. The locality most distant from the native vegetation and closest to the city had the highest helminth prevalence and mean species richness. The species richness in the helminth communities of Euryoryzomys russatus, N. squamipes and O. nigripes in these Cabruca agroforestries were within the range found in studies carried out in Atlantic Forest areas.
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Affiliation(s)
- Maíra G Kersul
- Programa de Pós-Graduação em Ciência Animal, Universidade Estadual de Santa Cruz, Campus Soane Nazaré de Andrade, Rodovia Jorge Amado, Km 16, Bairro Salobrinho, 45662-900, Ilhéus, Bahia, Brazil
| | - Natália A Costa
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil.,Programa de Pós-Graduação em Biologia Parasitátia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Avenida Brasil, 4.365, Manguinhos, 21040-360, Rio de Janeiro, RJ, Brazil
| | - Raquel G Boullosa
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil.,Programa de Pós-Graduação em Biodiversidade e Saúde, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Avenida Brasil, 4.365, Manguinhos, 21040-360, Rio de Janeiro, RJ, Brazil
| | - Adna A S Silva
- Programa de Pós-Graduação em Zoologia, Universidade Estadual de Santa Cruz, Campus Soane Nazaré de Andrade, Rodovia Jorge Amado, Km 16, Bairro Salobrinho, 45662-900, Ilhéus, Bahia, Brazil
| | - Élson O Rios
- Coleção de Mamíferos "Alexandre Rodrigues Ferreira" (CMARF), Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Campus Soane Nazaré de Andrade, Rodovia Jorge Amado, Km 16, Bairro Salobrinho, 45662-900, Ilhéus, Bahia, Brazil
| | - Alexandre D Munhoz
- Departamento de Ciências Agrárias e Ambientais, Universidade Estadual de Santa Cruz, Campus Soane Nazaré de Andrade, Rodovia Jorge Amado, Km 16, Bairro Salobrinho, 45662-900, Ilhéus, Bahia, Brazil
| | - Beatriz E Andrade-Silva
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil.,Programa de Pós-Graduação em Biologia Parasitátia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Avenida Brasil, 4.365, Manguinhos, 21040-360, Rio de Janeiro, RJ, Brazil
| | - Arnaldo Maldonado
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil
| | - Rosana Gentile
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil
| | - Martin R Alvarez
- Coleção de Mamíferos "Alexandre Rodrigues Ferreira" (CMARF), Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Campus Soane Nazaré de Andrade, Rodovia Jorge Amado, Km 16, Bairro Salobrinho, 45662-900, Ilhéus, Bahia, Brazil
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11
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Expansion of the range of Necromys lasiurus (Lund, 1841) into open areas of the Atlantic Forest biome in Rio de Janeiro state, Brazil, and the role of the species as a host of the hantavirus. Acta Trop 2018; 188:195-205. [PMID: 30149024 DOI: 10.1016/j.actatropica.2018.08.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 08/20/2018] [Accepted: 08/22/2018] [Indexed: 01/13/2023]
Abstract
Necromys lasiurus is a generalist rodent that is thought to be the main reservoir of the Araraquara hantavirus, which causes Hantavirus Pulmonary Syndrome, in the Brazilian Cerrado savanna. This species occurs naturally in the open habitats of the Cerrado, Pantanal and Caatinga biomes, where it often occurs at high densities, although the distribution of the species has recently been observed expanding into the Brazilian state of Rio de Janeiro. This study aimed to map the occurrence of N. lasiurus within the Atlantic Forest of Rio de Janeiro state and discuss the potential role of the species as a reservoir of the Araraquara hantavirus in these areas. The study was based on a comprehensive literature search and four expeditions for the collection of specimens in the state of Rio de Janeiro. The data were used to predict the distribution of N. lasiurus, confirm the distribution of the species in the state, and detect the rates of hantavirus infection in these rodents. Necromys lasiurus has been recorded at 16 localities in 10 municipalities of Rio de Janeiro state. The relative abundance of N. lasiurus was low at all localities, except for the REBIO Poço das Antas and APA-BRSJ, two protected areas. Necromys lasiurus was associated primarily with landscapes dominated by farmland (plantations or pasture) at relatively low altitudes in the vicinity of bodies of water. A total of 204 serum samples were collected, but none were reactive for hantavirus. The distribution of N. lasiurus is expanding into many areas of the anthropogenic matrix, but it is not usually either abundant or dominant in these areas. The relatively reduced abundance of N. lasiurus in Rio de Janeiro and the lack of infection in all the areas investigated indicate that it is unlikely to be a reservoir of hantavirus in this region in the near future.
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12
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Cardoso TDS, Braga CADC, Macabu CE, Simões RDO, Costa-Neto SFD, Maldonado Júnior A, Gentile R, Luque JL. Helminth metacommunity structure of wild rodents in a preserved area of the Atlantic Forest, Southeast Brazil. REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA 2018; 27:495-504. [DOI: 10.1590/s1984-296120180066] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 08/10/2018] [Indexed: 11/21/2022]
Abstract
Abstract The helminth fauna and metacommunity structure of eight sympatric sigmodontine rodents were investigated at the Serra dos Órgãos National Park, an Atlantic Forest reserve located in the State of Rio de Janeiro, southeast Brazil. Rodents of the species Abrawayaomys ruschii, Akodon montensis, Blarinomys breviceps , Delomys dorsalis, Oligoryzomys flavescens, Oligoryzomys nigripes, Oxymycterus quaestor and Thaptomys nigrita were found infected with helminths. Akodon montensis presented the highest total helminth species richness, with six different species of helminths. The nematode Stilestrongylus lanfrediae was the most abundant and prevalent helminth species observed. The host-parasite network analysis showed little interactions among host species. Akodon montensis seems to act as a keystone-species in the rodent community. This species shared the nematodes Stilestrongylus aculeata with A. ruschii and Protospirura numidica criceticola with T. nigrita, and the cestode Rodentolepis akodontis with D. dorsalis. The congeners host species O. flavescens and O. nigripes shared the nematodes Guerrerostrongylus zetta and S. lanfrediae. The rodents B. breviceps and O. quaestor did not share any helminths with other hosts. The helminth metacommunity showed a random pattern on both infracommunity and component community levels, indicating different responses by each helminth species to the environmental gradient.
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13
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Metacommunity structure of the helminths of the black-eared opossum Didelphis aurita in peri-urban, sylvatic and rural environments in south-eastern Brazil. J Helminthol 2018; 93:720-731. [PMID: 30220264 DOI: 10.1017/s0022149x18000780] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Among the Brazilian marsupials, the species of the genus Didelphis are the most parasitized by helminths. This study aimed to describe the species composition and to analyse the helminth communities of the Atlantic Forest common opossum Didelphis aurita at infracommunity and component community levels using the Elements of Metacommunity Structure Analysis, considering peri-urban, sylvatic and rural environments in the state of Rio de Janeiro, Brazil. Seventy-three specimens of D. aurita were captured during the study. Fourteen species of helminths were collected: nine of the phylum Nematoda (Trichuris minuta, Trichuris didelphis, Globocephalus marsupialis, Heterostrongylus heterostrongylus, Travassostrongylus orloffi, Viannaia hamata, Aspidodera raillieti, Cruzia tentaculata and Turgida turgida); four of the phylum Platyhelminthes (three species of Trematoda, Duboisiella proloba, Brachylaima advena and Rhopalias coronatus, and one species of the class Cestoda); and one species of the phylum Acanthocephala (Oligacanthorhynchus microcephalus). More than 95% of the animals were infected with parasites. The most abundant parasite species were V. hamata, T. turgida, C. tentaculata and T. orloffi. The nematodes T. turgida, C. tentaculata and A. raillieti were the most dominant species in the three environments. The analysis of the metacommunity structure indicated a structured pattern as a function of the environmental gradient, but only when all localities were considered together. At the infracommunity and component community levels, quasi-nested and nested structures with stochastic species loss were observed, respectively. The results indicate that the settlement of helminth species in the opossums can be attributed to the heterogeneity among individual hosts in relation to their exposure to parasites and to extrinsic factors, which vary among habitats, considering a regional scale. On a local scale, the characteristics of this host species may promote homogenization among individual hosts in terms of their exposure to the helminths. This study constitutes a new host record for the species G. marsupialis and T. didelphis and represents a pioneering investigation of the helminth metacommunity of a Neotropical marsupial.
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14
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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: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [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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15
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Panisse G, Digiani MC. A new species of Stilestrongylus (Nematoda, Heligmonellidae) from the Atlantic Forest of Misiones, Argentina, parasitic in Euryoryzomys russatus (Cricetidae, Sigmodontinae). Parasitol Res 2018; 117:1205-1210. [DOI: 10.1007/s00436-018-5801-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 02/06/2018] [Indexed: 11/30/2022]
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16
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Cabral ADN, Teles DA, Brito SV, Almeida WDO, Dos Anjos LA, Guarnieri MC, Ribeiro SC. Helminth parasites of Mabuya arajara Rebouças-Spieker, 1981 (Lacertilia: Mabuyidae) from Chapada do Araripe, northeastern Brazil. Parasitol Res 2018; 117:1185-1193. [PMID: 29435716 DOI: 10.1007/s00436-018-5797-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Accepted: 01/31/2018] [Indexed: 11/30/2022]
Abstract
We provide data on the helminth fauna from the digestive tract of the lizard Mabuya arajara Rebouças-Spieker, 1981 from Chapada do Araripe, northeastern Brazil. Seventy one of the 127 lizards examined (56%) were infected with four nematode species: Physalopteroides venancioi and Physaloptera sp. (Physalopteridae), Strongyluris oscari (Heterakidae), and Parapharyngodon alvarengai (Pharyngodonidae), the latter being the component species (prevalence 53.5%; mean intensity of infection 3.37 ± 2.0; discrepancy index D = 0.69). The helminth P. alvarengai infected M. arajara throughout the year and showed increased infection rates in July, at the beginning of the dry season. In addition to the relationship with seasonality, lizards with greater body length and/or body mass were more infected. Relationships between number of parasites and body mass and with the sexes of lizards, on the other hand, were not found. Mabuya arajara represents a new host for these nematodes. This study contributes to the knowledge of the helminth fauna associated with the digestive tract of lizards from South America and the Caatinga domain.
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Affiliation(s)
- Arthur do Nascimento Cabral
- Departamento de Zoologia, Universidade Federal de Pernambuco (UFPE), Recife, PE, CEP 50760-420, Brazil. .,Programa de Pós-Graduação em Biologia Animal, Universidade Federal de Pernambuco (UFPE), Recife, PE, CEP 50760-420, Brazil.
| | - Diego Alves Teles
- Programa de Pós-Graduação em Ciências Biológicas, Departamento de Sistemática e Ecologia, Universidade Federal da Paraíba (UFPB), João Pessoa-PB, Paraíba, Brazil
| | - Samuel Vieira Brito
- Centro de Ciências Agrárias e Ambientais, Universidade Federal do Maranhão (UFMA), Chapadinha, MA, CEP 65500-000, Brazil
| | - Waltécio de Oliveira Almeida
- Programa de Pós-Graduação em Bioprospecção Molecular, Universidade Regional do Cariri (URCA), Crato, CE, Brazil.,Departamento de Química Biológica, Universidade Regional do Cariri (URCA), Crato, CE, Brazil
| | - Luciano Alves Dos Anjos
- Campus de Ilha Solteira, Faculdade de Engenharia de Ilha Solteira, Departamento de Biologia e Zootecnia, Universidade Estadual Paulista (UNESP), São Paulo, SP, Brazil
| | - Míriam Camargo Guarnieri
- Departamento de Zoologia, Universidade Federal de Pernambuco (UFPE), Recife, PE, CEP 50760-420, Brazil
| | - Samuel Cardozo Ribeiro
- Programa de Pós-Graduação em Bioprospecção Molecular, Universidade Regional do Cariri (URCA), Crato, CE, Brazil.,Instituto de Formação de Educadores, Universidade Federal do Cariri (UFCA), Campus Brejo Santo, CE, CEP 63260-000, Brazil
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17
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Gressler LT, Krawczak FDS, Knoff M, Monteiro SG, Labruna MB, Binder LDC, Oliveira CSD, Notarnicola J. Litomosoides silvai (Nematoda: Onchocercidae) parasitizing Akodon montensis (Rodentia: Cricetidae) in the southern region of Brazil. REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA 2017; 26:433-438. [DOI: 10.1590/s1984-29612017060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 09/15/2017] [Indexed: 11/21/2022]
Abstract
Abstract In the present study, Litomosoides silvai parasitizing Akodon montensis in the southern region of Brazil is reported for the first time. New morphological information is provided for some structures of this nematode species, such as a flattened cephalic extremity, presence of two dorsal cephalic papillae, female tail with a constriction at its tip, “s” shaped vagina, spicules characteristic of the carinii species group and microfilaria tail constricted at the tip. This nematode was found parasitizing the thoracic cavity with a prevalence of 10% (2/20), mean intensity of 4 (6/2), mean abundance of 0.4 (8/20) and range of infection of 2-6 specimens per host, in southern Brazil. This occurrence of L. silvai in A. montensis is a new geographical record for southern Brazil, in the Upper Paraná Atlantic Forest ecoregion of the northwestern region of Rio Grande do Sul, which is part of the Atlantic Forest biome.
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18
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Muniz-Pereira LC, Gonçalves PA, Guimarães EV, Fonseca FDO, Santos JAAD, Maldonado-Júnior A, Moraes AHAD. New morphological data of Litomosoides chagasfilhoi (Nematoda: Filarioidea) parasitizing Nectomys squamipes in Rio de Janeiro, Brazil. REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA = BRAZILIAN JOURNAL OF VETERINARY PARASITOLOGY : ORGAO OFICIAL DO COLEGIO BRASILEIRO DE PARASITOLOGIA VETERINARIA 2016; 25:470-475. [PMID: 27925058 DOI: 10.1590/s1984-29612016063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 09/26/2016] [Indexed: 06/06/2023]
Abstract
Litomosoides chagasfilhoi, originally described by Moraes Neto, Lanfredi & De Souza (1997) parasitizing the abdominal cavity of the wild rodent, Akodon cursor (Winge, 1887), was found in the abdominal cavity of Nectomys squamipes (Brants, 1827), from the municipality of Rio Bonito, Rio de Janeiro State, Brazil. This study led to addition of new morphological data and a new geographical distribution for this filarioid in Brazil. Several characters were detailed and emended to previous records of L. chagasfilhoi in N. squamipes, and confirming the original description in A. cursor: buccal capsule longer than wide with walls thinner than the lumen, right spicule slightly sclerotized, with membranous distal extremity slender, with a small tongue-like terminal portion, left spicule with handle longer than the blade, whose edges form large membranous wings folded longitudinally.
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Affiliation(s)
- Luís Cláudio Muniz-Pereira
- Laboratório de Helmintos Parasitos de Vertebrados - LHPV, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - FIOCRUZ, Rio de Janeiro, RJ, Brasil
| | - Paula Araujo Gonçalves
- Laboratório de Inovações em Terapias, Ensino e Bioprodutos - LITEB, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - FIOCRUZ, Rio de Janeiro, RJ, Brasil
| | - Erick Vaz Guimarães
- Laboratório de Biologia Estrutural - LBE, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - FIOCRUZ, Rio de Janeiro, RJ, Brasil
| | - Fábio de Oliveira Fonseca
- Laboratório de Inovações em Terapias, Ensino e Bioprodutos - LITEB, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - FIOCRUZ, Rio de Janeiro, RJ, Brasil
| | - José Augusto Albuquerque Dos Santos
- Laboratório de Avaliação e Promoção da Saúde Ambiental - LAPSA, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - FIOCRUZ, Rio de Janeiro, RJ, Brasil
| | - Arnaldo Maldonado-Júnior
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios - LBPMSR, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - FIOCRUZ, Rio de Janeiro, RJ, Brasil
| | - Antonio Henrique Almeida de Moraes
- Laboratório de Inovações em Terapias, Ensino e Bioprodutos - LITEB, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - FIOCRUZ, Rio de Janeiro, RJ, Brasil
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19
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Weirich JM, Catzeflis F, Jiménez FA. Guerrerostrongylus marginalis n. sp. (Trichostrongyloidea: Heligmonellidae) from the Guianan arboreal mouse (Oecomys auyantepui) from French Guiana. Parasite 2016; 23:9. [PMID: 26956220 PMCID: PMC4783586 DOI: 10.1051/parasite/2016009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 02/18/2016] [Indexed: 11/26/2022] Open
Abstract
Based on the number and arrangement of cuticular ridges and configuration of the dorsal ray, nematode specimens collected from the small intestine of eight Guianan arboreal mice, Oecomys auyantepui (Rodentia: Sigmodontinae), in French Guiana are herein described and characterized. Guerrerostrongylus marginalis n. sp. (Heligmosomoidea: Heligmonellidae) shows a synlophe consisting of more than 40 ridges and a unique bursal arrangement with ray 8 (externo-dorsal) extending to the edge of the bursal margin, and appearing more prominent than the dorsal ray. This bursal arrangement is common in members of Hassalstrongylus Durette-Desset, 1971, but uncommon in the other four species in Guerrerostrongylus Sutton & Durette-Desset, 1991. The placement of the new species in Guerrerostrongylus is based on the number and nature of cuticular ridges and the ray arrangement and symmetry of the caudal bursa. Diagnostic characteristics of Guerrerostrongylus marginalis n. sp. include the length of ray 8 relative to bursal margin, the relative size of the spicules and vestibule, and the number of eggs in the uterus. We propose an amendment to the generic diagnosis of Guerrerostrongylus to modify the characters of the long rays 6 (postero-lateral), rays 8 (externo-dorsal), and dorsal ray as diagnostic, since at least ray 6 appears to be short in two different species in the genus, namely G. ulysi Digiani, Notarnicola & Navone, 2012 and G. marginalis n. sp.
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Affiliation(s)
- Jessica M. Weirich
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Department of Zoology, Southern Illinois University Carbondale IL
62901-6501 USA
| | - François Catzeflis
-
CNRS UMR 5554, Institut des Sciences de l’Évolution, Case Courrier 064, Université Montpellier Montpellier
34095 France
| | - F. Agustín Jiménez
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Department of Zoology, Southern Illinois University Carbondale IL
62901-6501 USA
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20
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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] [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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21
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The influence of habitat fragmentation on helminth communities in rodent populations from a Brazilian Mountain Atlantic Forest. J Helminthol 2015. [DOI: 10.1017/s0022149x15000589] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
AbstractThe influence of habitat structure on helminth communities of three sigomdontinae rodent species (Akodon cursor, A. montensisandOligoryzomys nigripes) was investigated in forest fragments within an agricultural landscape in south-eastern Brazil. This is a pionner study correlating the occurrence of helminth species of rodent hosts with microhabitat characteristics. Rodents were collected from 12 fragments and in a continuous conserved area. Up to 13 nematode, three cestode and two trematode species were identified, and habitat fragmentation was found to have more influence on the helminth composition ofO. nigripescompared to the other two rodent species. Fragmentation appeared to limit the development of some helminths’ life cycles, e.g. with some species such asTrichofreitasia lenti, Protospirura numidica, Cysticercus fasciolarisandAvellariasp., occurring mostly in areas with less anthropic impact. However, fragmentation did not seem to affect the life cycles of other dominant helminths, such as the trematodeCanaania obesa,the nematodesStilestrongylus lanfrediae,S. etaandS. aculeata,and the cestodeRodentolepis akodontis.The helminth community structure followed a nested pattern of distribution inA. montensisandO. nigripes.Stilestrongylus lanfrediaeseemed to be more associated with dense understorey,C. obesawith open canopy and dense understorey, andGuerrerostrongylus zettawith organic matter on the ground. Their presence in each area may be explained by aspects of their life cycles that take place in the external environment outside the host.
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22
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Spratt DM. Species of Angiostrongylus (Nematoda: Metastrongyloidea) in wildlife: A review. INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE 2015; 4:178-89. [PMID: 25853051 PMCID: PMC4381133 DOI: 10.1016/j.ijppaw.2015.02.006] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 02/16/2015] [Accepted: 02/20/2015] [Indexed: 11/27/2022]
Abstract
Twenty-one species of Angiostrongylus plus Angiostrongylus sp. (Nematoda: Metastrongyloidea) are known currently in wildlife. These occur naturally in rodents, tupaiids, mephitids, mustelids, procyonids, felids, and canids, and aberrantly in a range of avian, marsupial and eutherian hosts including humans. Adults inhabit the pulmonary arteries and right atrium, ventricle and vena cava, bronchioles of the lung or arteries of the caecum and mesentery. All species pass first-stage larvae in the faeces of the host and all utilise slugs and/or aquatic or terrestrial snails as intermediate hosts. Gastropods are infected by ingestion or penetration of first-stage larvae; definitive hosts by ingestion of gastropods or gastropod slime. Transmission of at least one species may involve ingestion of paratenic hosts. Five developmental pathways are identified in these life cycles. Thirteen species, including Angiostrongylus sp., are known primarily from the original descriptions suggesting limited geographic distributions. The remaining species are widespread either globally or regionally, and are continuing to spread. Small experimental doses of infective larvae (ca. 20) given to normal or aberrant hosts are tolerated, although generally eliciting a granulomatous histopathological response; large doses (100-500 larvae) often result in clinical signs and/or death. Two species, A. cantonensis and A. costaricensis, are established zoonoses causing neurological and abdominal angiostrongliasis respectively. The zoonotic potential of A. mackerrasae, A. malaysiensis and A. siamensis particularly warrant investigation. Angiostrongylus cantonensis occurs in domestic animals, mammalian and avian wildlife and humans in the metropolitan areas of Brisbane and Sydney, Australia, where it has been suggested that tawny frogmouths and brushtail possums may serve as biosentinels. A major conservation issue is the devastating role A. cantonensis may play around zoos and fauna parks where captive rearing of endangered species programmes may exist and where Rattus spp. are invariably a problem.
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Affiliation(s)
- David M Spratt
- Australian National Wildlife Collection, CSIRO National Research Collections, GPO Box 1700, Canberra, ACT 2601, Australia
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Biotic and abiotic effects on the intestinal helminth community of the brown rat Rattus norvegicus from Rio de Janeiro, Brazil. J Helminthol 2014; 90:21-7. [PMID: 25264030 DOI: 10.1017/s0022149x14000704] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Rattus norvegicus has attracted much attention because of its role as a reservoir of zoonotic pathogens. This work aimed to identify the intestinal helminth species in R. norvegicus and to analyse the effects of temperature, rainfall, host age and sex on the helminth community structure. Moreover, this study investigated the possible associations among helminth species in an urban population of R. norvegicus in São Gonçalo, Rio de Janeiro, sampled during the rainy and dry seasons over a span of 2 years. A total of 112 rats were infected by six species of helminths. The nematode Nippostrongylus brasiliensis was the most prevalent and abundant species, with high mean intensity in both seasons, followed by Strongyloides venezuelensis, Heterakis spumosa, Raillietina sp., Hymenolepis nana and Moniliformis moniliformis. Co-occurrence was found between N. brasiliensis and S. venezuelensis and between N. brasiliensis and H. spumosa. The occurrence of S. venezuelensis was related to rainfall. The understanding of the helminth community structure in this synanthropic rat provides basic information on parasites of public health importance, as two helminth species (H. nana and M. moniliformis) recovered from rats in the urban area studied can infect humans.
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Simões RO, Luque JL, Maldonado A. Additional data on the synlophe of Stilestrongylus aculeata (Travassos, 1918) and Stilestrongylus eta (Travassos, 1937) (Heligmonellidae) parasitic in Akodon montensis (Sigmodontinae) from the Atlantic Forest. J Parasitol 2013; 100:151-3. [PMID: 24224841 DOI: 10.1645/12-88.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Additional data on the synlophe and morphological measurements are provided for the heligmonellids Stilestrongylus aculeata (Travassos, 1918) and Stilestrongylus eta (Travassos, 1937), collected from Akodon montensis Thomas, 1913, of the Atlantic Forest, Rio de Janeiro, Brazil. The synlophe of S. aculeata is characterized by 19 cuticular middle body ridges in males and 24 cuticular middle body ridges in females, whereas S. eta presents 17 middle body ridges in males and 20 middle body ridges in females.
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Affiliation(s)
- Raquel O Simões
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios, Instituto Oswaldo Cruz, Av. Brasil 4365 Manguinhos, 21045-900, Rio de Janeiro, RJ, Brazil
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Simões RO, Maldonado-Júnior A, Luque JL. Helminth communities in three sympatric rodents from the Brazilian Atlantic Forest: contrasting biomass and numerical abundance. BRAZ J BIOL 2012; 72:909-14. [DOI: 10.1590/s1519-69842012000500018] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2011] [Accepted: 01/26/2012] [Indexed: 11/22/2022] Open
Abstract
The study of parasite body size is an important approach to understand the different patterns of helminth community structure, once it is usually analysed using only numerical descriptors which do not capture size heterogeneity among parasite species. In the present study, we compared the pattern in the helminth community of three sympatric wild rodent species Akodon cursor, A. montensis and Oligoryzomys nigripes using numerical abundance and biomass approaches. The cestode Rodentolepis akodontis was the worm with highest biomass in the three rodents. The trichostrongylid Stilestrongylus lanfrediae presented highest biomass in O. nigripes and represented 70% of the total numeric abundance of parasites. Interestingly, for Akodon spp. the species with more biomass represented less than 10% of the total numerical abundance. Parasites with the higher numeric abundance do not have the largest body size. Although the biomass pattern is different from numeric abundance, this difference does not influence in the helminth distribution community among the three sympatric hosts. The status change of a helminth species within the community due to its volumetric dominance might justify a new approach since parasites belonging to different taxa obtain resources from the host in different ways.
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Affiliation(s)
- RO. Simões
- Universidade Federal Rural do Rio de Janeiro, Brazil
| | | | - JL. Luque
- Universidade Federal Rural do Rio de Janeiro, Brazil
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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] [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] [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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de Oliveira Simões R, Dos Santos MM, Maldonado A. A new heligmonellid (Nematoda: Heligmonellidae) from Oecomys mamorae (Rodentia: Sigmodontinae) in the Pantanal and new data on the synlophe of Guerrerostrongylus zetta from the Atlantic Forest, Brazil. J Parasitol 2012; 98:801-5. [PMID: 22468958 DOI: 10.1645/ge-2905.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
A new species of Heligmonellidae nematode, Guerrerostrongylus gomesae n. sp., is described from specimens collected from the small intestine of the rodent Oecomys mamorae Thomas, 1906 in the Brazilian Pantanal. It differs from the 2 other species of the genus by the number of ridges in the synlophe 35-46 and 40-48 at the midbody in the male and female, respectively, by rays 8 arising at midlength of the dorsal trunk, ending near the margin of the caudal bursa, and the dorsal ray divided at the second-third part into 2 branches, each branch divided into 2 subequal subbranches. In addition, specimens of Guerrerostrongylus zetta Travassos, 1937 collected in Oligoryzomys nigripes Olfers, 1818 contain synlophe with 36-42 cuticular ridges in males and 38-42 in females at the midbody. By the characteristics of the synlophe and caudal bursa, Gerrerostrongylus gomesae n. sp. is considered a new species. We suggest that the number of cuticular ridges for this genus broadens the range of the cuticular ridges to at least 35 at midbody.
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Affiliation(s)
- Raquel de Oliveira Simões
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios, Instituto Oswaldo Cruz-FIOCRUZ, Avenida Brasil, 4365, 21040-900, Rio de Janeiro, RJ, Brazil.
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