Ecology of the free-living stages of cattle nematodes in the dry season in the Lerma Valley, Salta province, Argentina
The objective of this work was to describe the dynamics of development and survival of the free-living stages of cattle gastrointestinal nematodes (GIN) in fecal matter (FM) and pasture during the dry season in the Lerma Valley, Salta province, northwestern Argentina (NWA) to contribute to GIN manag...
| Autores principales: | , , , , |
|---|---|
| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2024
|
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/16813 https://www.sciencedirect.com/science/article/pii/S1383576924000205 https://doi.org/10.1016/j.parint.2024.102869 |
| _version_ | 1855037560484528128 |
|---|---|
| author | Olmos, Leandro Hipolito Moreno, Ramiro Lloberas, María Mercedes Aguirre, Daniel Hector Suarez, Victor Humberto |
| author_browse | Aguirre, Daniel Hector Lloberas, María Mercedes Moreno, Ramiro Olmos, Leandro Hipolito Suarez, Victor Humberto |
| author_facet | Olmos, Leandro Hipolito Moreno, Ramiro Lloberas, María Mercedes Aguirre, Daniel Hector Suarez, Victor Humberto |
| author_sort | Olmos, Leandro Hipolito |
| collection | INTA Digital |
| description | The objective of this work was to describe the dynamics of development and survival of the free-living stages of cattle gastrointestinal nematodes (GIN) in fecal matter (FM) and pasture during the dry season in the Lerma Valley, Salta province, northwestern Argentina (NWA) to contribute to GIN management. The climate in the region is characterized by a rainy summer followed by a dry season from middle autumn to early spring. Fecal matter from calves naturally infected with GIN was deposited on three experimental field plots in April, July and October 2019, corresponding to the beginning, middle and end of the dry season, respectively. Each experimental unit consisted of 7 stools of about 800 g and had four repetitions. To determine the development from egg to infective larvae (L3), the first sampling (5 g fecal matter) was performed from the 10th day post-contamination and continued every 3 days until L3 were found. Subsequently, a monthly sampling was made until two consecutive negative results were obtained. Sampling of pasture began three days after the L3 recovery from FM, and continued monthly until two negative results were obtained. The following parameters were evaluated: development time and development rate from egg to L3; permanence time of L3 in feces; time of appearance on pasture; migration rate; and permanence time of L3 on pasture. The main genera of parasites present were Cooperia and Haemonchus. Significant differences were observed in the development time among contamination months (p < 0.001); development time was highest in the July contamination (28 days), with October and April contamination averaging 9 and 10 days, respectively. Development time also showed significant differences (p < 0.01) among contamination months, being highest in October (31.48%). The highest permanence time in fecal matter values were recorded in the July contamination (183 days) and migration rate was highest in the October contamination (42.49%). The highest time of appearance on pasture value was recorded in the July contamination (117 days). Finally, the highest permanence time of L3 in feces values were detected in the October contamination (148 days). The results of this work show that fecal contamination in the NWA region in the dry season would play an epidemiological role in the GIN cycle as a source of infection for the next productive cycle in the rainy season. |
| format | info:ar-repo/semantics/artículo |
| id | INTA16813 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA168132024-02-28T10:52:22Z Ecology of the free-living stages of cattle nematodes in the dry season in the Lerma Valley, Salta province, Argentina Olmos, Leandro Hipolito Moreno, Ramiro Lloberas, María Mercedes Aguirre, Daniel Hector Suarez, Victor Humberto Ganado Bovino Nematodos Heces Ecología Argentina Cattle Nematodes Faeces Ecology The objective of this work was to describe the dynamics of development and survival of the free-living stages of cattle gastrointestinal nematodes (GIN) in fecal matter (FM) and pasture during the dry season in the Lerma Valley, Salta province, northwestern Argentina (NWA) to contribute to GIN management. The climate in the region is characterized by a rainy summer followed by a dry season from middle autumn to early spring. Fecal matter from calves naturally infected with GIN was deposited on three experimental field plots in April, July and October 2019, corresponding to the beginning, middle and end of the dry season, respectively. Each experimental unit consisted of 7 stools of about 800 g and had four repetitions. To determine the development from egg to infective larvae (L3), the first sampling (5 g fecal matter) was performed from the 10th day post-contamination and continued every 3 days until L3 were found. Subsequently, a monthly sampling was made until two consecutive negative results were obtained. Sampling of pasture began three days after the L3 recovery from FM, and continued monthly until two negative results were obtained. The following parameters were evaluated: development time and development rate from egg to L3; permanence time of L3 in feces; time of appearance on pasture; migration rate; and permanence time of L3 on pasture. The main genera of parasites present were Cooperia and Haemonchus. Significant differences were observed in the development time among contamination months (p < 0.001); development time was highest in the July contamination (28 days), with October and April contamination averaging 9 and 10 days, respectively. Development time also showed significant differences (p < 0.01) among contamination months, being highest in October (31.48%). The highest permanence time in fecal matter values were recorded in the July contamination (183 days) and migration rate was highest in the October contamination (42.49%). The highest time of appearance on pasture value was recorded in the July contamination (117 days). Finally, the highest permanence time of L3 in feces values were detected in the October contamination (148 days). The results of this work show that fecal contamination in the NWA region in the dry season would play an epidemiological role in the GIN cycle as a source of infection for the next productive cycle in the rainy season. EEA Balcarce Fil: Olmos, Leandro Hipolito. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Investigación Animal del Chaco Semiárido. Área de Investigación en Salud Animal; Argentina Fil: Moreno, Ramiro. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Investigación Animal del Chaco Semiárido. Área de Investigación en Salud Animal; Argentina Fil: Lloberas, Mercedes. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Fil: Aguirre, Daniel. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Investigación Animal del Chaco Semiárido. Área de Investigación en Salud Animal; Argentina Fil: Suarez, Victor. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Investigación Animal del Chaco Semiárido. Área de Investigación en Salud Animal; Argentina 2024-02-28T10:16:43Z 2024-02-28T10:16:43Z 2024-06 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersionVersion http://hdl.handle.net/20.500.12123/16813 https://www.sciencedirect.com/science/article/pii/S1383576924000205 1383-5769 (print) 1873-0329 (online) https://doi.org/10.1016/j.parint.2024.102869 eng info:eu-repo/semantics/restrictedAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Elsevier Parasitology International : 10286921 (June 2024) |
| spellingShingle | Ganado Bovino Nematodos Heces Ecología Argentina Cattle Nematodes Faeces Ecology Olmos, Leandro Hipolito Moreno, Ramiro Lloberas, María Mercedes Aguirre, Daniel Hector Suarez, Victor Humberto Ecology of the free-living stages of cattle nematodes in the dry season in the Lerma Valley, Salta province, Argentina |
| title | Ecology of the free-living stages of cattle nematodes in the dry season in the Lerma Valley, Salta province, Argentina |
| title_full | Ecology of the free-living stages of cattle nematodes in the dry season in the Lerma Valley, Salta province, Argentina |
| title_fullStr | Ecology of the free-living stages of cattle nematodes in the dry season in the Lerma Valley, Salta province, Argentina |
| title_full_unstemmed | Ecology of the free-living stages of cattle nematodes in the dry season in the Lerma Valley, Salta province, Argentina |
| title_short | Ecology of the free-living stages of cattle nematodes in the dry season in the Lerma Valley, Salta province, Argentina |
| title_sort | ecology of the free living stages of cattle nematodes in the dry season in the lerma valley salta province argentina |
| topic | Ganado Bovino Nematodos Heces Ecología Argentina Cattle Nematodes Faeces Ecology |
| url | http://hdl.handle.net/20.500.12123/16813 https://www.sciencedirect.com/science/article/pii/S1383576924000205 https://doi.org/10.1016/j.parint.2024.102869 |
| work_keys_str_mv | AT olmosleandrohipolito ecologyofthefreelivingstagesofcattlenematodesinthedryseasoninthelermavalleysaltaprovinceargentina AT morenoramiro ecologyofthefreelivingstagesofcattlenematodesinthedryseasoninthelermavalleysaltaprovinceargentina AT lloberasmariamercedes ecologyofthefreelivingstagesofcattlenematodesinthedryseasoninthelermavalleysaltaprovinceargentina AT aguirredanielhector ecologyofthefreelivingstagesofcattlenematodesinthedryseasoninthelermavalleysaltaprovinceargentina AT suarezvictorhumberto ecologyofthefreelivingstagesofcattlenematodesinthedryseasoninthelermavalleysaltaprovinceargentina |