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Gonzálvez M, Ruiz de Ybáñez R, Rodríguez-Caro RC, Maíz-García A, Gómez L, Giménez A, Graciá E. Assessing DESS solution for the long-term preservation of nematodes from faecal samples. Res Vet Sci 2022; 153:45-48. [PMID: 36308790 DOI: 10.1016/j.rvsc.2022.10.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 10/06/2022] [Accepted: 10/11/2022] [Indexed: 11/09/2022]
Abstract
Preservation of biological samples is a relevant issue for many scientific disciplines. Although traditional preservers, such as formaldehyde or ethanol, imply major disadvantages related to health risks, DNA degradation and distortion of structures, they are widely used. Hence, the search for viable alternatives preserving morphometry and genetics seems necessary. Here we assess the suitability of DESS solution to preserve adult nematodes and their eggs in faeces. Concretely, faecal samples of terrestrial tortoises with oxyurids were used to: (i) compare the 1-month storage efficacy of eggs from different conservation protocols (faeces without preserver at -20 °C, faeces with DESS solution at room temperature, faeces with DESS solution at -20 °C and faeces with ethanol 70% at room temperature); (ii) address morphological nematode identification after 2 years of storage with DESS. We also corroborated that nematode DNA remained viable after 2 years. Overall, our results showed that DESS solution at room temperature is an advisable alternative to conserve both parasite eggs and adult nematodes for morphological identification and genetic purposes. It also offers the advantages of being low-cost, safe and suitable for fieldwork conditions and shipments without refrigeration for nematode preservation.
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Affiliation(s)
- M Gonzálvez
- Departamento de Sanidad Animal, Facultad de Veterinaria, Campus de Excelencia Internacional Regional "Campus Mare Nostrum", Universidad de Murcia, 30100 Murcia, Spain; Área de Ecología, Departamento de Biología Aplicada, Universidad Miguel Hernández, Av. de la Universidad, 03202 Elche, Spain
| | - R Ruiz de Ybáñez
- Departamento de Sanidad Animal, Facultad de Veterinaria, Campus de Excelencia Internacional Regional "Campus Mare Nostrum", Universidad de Murcia, 30100 Murcia, Spain.
| | - R C Rodríguez-Caro
- Área de Ecología, Departamento de Biología Aplicada, Universidad Miguel Hernández, Av. de la Universidad, 03202 Elche, Spain; Department of Zoology, Oxford University, 11a Mansfield Road, OX1 3SZ, Oxford, England, UK; Department of Ecology, University of Alicante, Road. San Vicente del Raspeig, 03690 Alicante, Spain
| | - A Maíz-García
- Área de Ecología, Departamento de Biología Aplicada, Universidad Miguel Hernández, Av. de la Universidad, 03202 Elche, Spain
| | - L Gómez
- Departamento de Sanidad Animal, Facultad de Veterinaria, Campus de Excelencia Internacional Regional "Campus Mare Nostrum", Universidad de Murcia, 30100 Murcia, Spain
| | - A Giménez
- Área de Ecología, Departamento de Biología Aplicada, Universidad Miguel Hernández, Av. de la Universidad, 03202 Elche, Spain; Centro de Investigación e Innovación Agroalimentaria y Agroambiental (CIAGRO-UMH), Universidad Miguel Hernández, Elche, Spain
| | - E Graciá
- Área de Ecología, Departamento de Biología Aplicada, Universidad Miguel Hernández, Av. de la Universidad, 03202 Elche, Spain; Centro de Investigación e Innovación Agroalimentaria y Agroambiental (CIAGRO-UMH), Universidad Miguel Hernández, Elche, Spain
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