| Author | Costa, Natália Alves | |
| Author | Gentile, Rosana | |
| Author | Valle Alvarez, Martín Roberto del | |
| Author | Maldonado Júnior, Arnaldo | |
| Access date | 2024-10-21T17:18:32Z | |
| Available date | 2024-10-21T17:18:32Z | |
| Document date | 2024 | |
| Citation | COSTA, Natália Alves et al. A new species of Heligmonellidae (Nematoda) in Euryoryzomys russatus (Rodentia: Sigmodontinae) in the atlantic forest of northeast Brazil. Acta Parasitologica, p. 1-8, 16 Oct. 2024. | |
| ISSN | 1230-2821 | |
| URI | https://www.arca.fiocruz.br/handle/icict/66632 | |
| Description | Produção científica do Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios. | pt_BR |
| Sponsorship | This work was financially supported by Instituto Oswaldo Cruz– IOC/FIOCRUZ, National Council for Scientific and Technological Development (CNPq) (PPBIO Rede BioMA; 457524/2012-0), Santa Cruz State University (UESC; PROPP 00220.1100.1645, 00220.1100.1905), Carlas Chagas Filho Foundation for Research Support in Rio de Janeiro (E- 26/010.001597/2019), and the Postgraduate Program on Parasite Biology (IOC-FIOCRUZ). Natália Alves Costa received PhD grants from Coordination Office for Improvement of Higher-Education Personnel (CAPES), Brazil. | |
| Language | eng | en_US |
| Publisher | Springer | |
| Rights | open access | |
| Title | A new species of Heligmonellidae (Nematoda) in Euryoryzomys russatus (Rodentia: Sigmodontinae) in the atlantic forest of northeast Brazil | en_US |
| Type | Article | |
| DOI | 10.1007/s11686-024-00928-6 | |
| Abstract | Background: The genus Stilestrongylus (Freitas, Lent, and Almeida, 1937) is defined by having 24 or more subequal cuticular ridges, an asymmetrical caudal bursa, and a hypertrophied genital cone. It comprises 25 recognized species, mainly parasitizing cricetids, and shows significant diversification linked to the evolution of its hosts. Stilestrongylus magnumspiculum n. sp. is a newly described nematode species identified in the small intestine of the rodent Euryoryzomys russatus (Cricetidae, Sigmodontinae) from the Atlantic Forest of Northeast Brazil. This study aims to characterize the new species and its prevalence in host populations. Methods: A total of 43 Euryoryzomys russatus individuals were collected and analyzed for parasitic infections. Morphological features of Stilestrongylus magnumspiculum n. sp. were examined, focusing on the number of ridges, synlophe characteristics, caudal bursa type, lobe hypertrophy, and the spicule length to body length ratio. Results: The new species exhibited a prevalence of 21% among the sampled hosts. Distinctive morphological features were observed, including:the synlophe structure exhibited specific ridge patterns that differentiate it from other species within the genus; the caudal bursa was identified as a type 2-2-1; hypertrophy of the right lobe was observed, indicating notable morphological adaptation; rays 4 and 5 were found to be equivalent in size and diverged at the distal end; the spicule length to body length ratio (SpL/BL) was measured at 30–36%, representing the largest ratio recorded for the genus. In comparison, other Stilestrongylus species displayed the following ratios: S. rolandoi (21–33%), S. lanfrediae (25–29%), S. kaaguyporai (20–24%), S. inexpectatus (20–23%), and S. stilesi (26–28%). Conclusions: This report presents Stilestrongylus magnumspiculum n. sp. as a new species of nematode, contributing to the diversity of the genus Stilestrongylus. The findings underscore the importance of studying host-parasite interactions within the Atlantic Forest ecosystem and provide a basis for future ecological and parasitological research. | en_US |
| Affilliation | Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Programa de Pós-Graduação em Biologia Parasitária. Rio de Janeiro, RJ, Brasil / Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios. Rio de Janeiro, RJ, Brasil. | |
| Affilliation | Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios. Rio de Janeiro, RJ, Brasil. | |
| Affilliation | Universidade Estadual de Santa Cruz. Departamento de Ciências Biológicas. Coleção de Mamíferos "Alexandre Rodrigues Ferreira". Ihéus, BA, Brasil. | |
| Affilliation | Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios. Rio de Janeiro, RJ, Brasil. | |
| Subject | Trichostrongyloidea | en_US |
| Subject | Stilestrongylus | en_US |
| Subject | Parasite | en_US |
| Subject | Rodent | en_US |
| Subject | Scanning electron microscopy | en_US |
| e-ISSN | 1896-1851 | |
| xmlui.metadata.dc.subject.ods | 04 Educação de qualidade | |
| xmlui.metadata.dc.subject.ods | 13 Ação contra a mudança global do clima | |
| xmlui.metadata.dc.subject.ods | 14 Vida na água | |
| xmlui.metadata.dc.subject.ods | 15 Vida terrestre | |
