Feeding patterns of capybara Hydrochaeris hydrochaeris (rodentia, hydrochaeridae) and cattle in the non-insular area of the Lower Delta of the Parana River, Argentina
Feeding habits of capybaras and cattle living in the non-insular area of the Lower Delta region were studied. In addition, samples from coypu were also analyzed. This study was made using a microhistological analysis of faeces. Faeces samples were taken seasonally during 2 years, between 1991 and 19...
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1998
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00251461_v62_n1_p37_Quintana http://hdl.handle.net/20.500.12110/paper_00251461_v62_n1_p37_Quintana |
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paper:paper_00251461_v62_n1_p37_Quintana2023-06-08T14:52:39Z Feeding patterns of capybara Hydrochaeris hydrochaeris (rodentia, hydrochaeridae) and cattle in the non-insular area of the Lower Delta of the Parana River, Argentina capybara cattle diet faecal analysis niche overlap Agrnetina Parana River Delta Bos taurus Cynodon dactylon Cyperaceae Eleocharis Hydrochaeris hydrochaeris Hydrochaeris hydrochaeris Luziola peruviana Myocastor coypus Panicum grumosum Poaceae Zizaniopsis bonariensis Feeding habits of capybaras and cattle living in the non-insular area of the Lower Delta region were studied. In addition, samples from coypu were also analyzed. This study was made using a microhistological analysis of faeces. Faeces samples were taken seasonally during 2 years, between 1991 and 1993. The results showed that Poaceae was the main consumed group throughout the year for both capybaras and cattle, with the exception of winter, where cattle consumed a higher proportion of Cyperaceae. For the three herbivores, only a few items constituted the most important contribution to the diets. Five food items (Cynodon dactylon, Panicum grumosum, Luziola peruviana, Zizaniopsis bonariensis and Eleocharis spp.) represented more than 60% of the diet for both capybara and cattle in every season. A similar foraging pattern was shown by both herbivores during the 2 years. Capybara and cattle diet compositions during the same season were similar, except in summer, when both diets were different. This last fact was also observed when the winter diets of the first two herbivores were compared with that of coypus. With the exception of summer, the seasonal trophic niche breadths were similar between capybaras and cattle. However, their values would be indicating a relatively narrow niche in every season, defining both herbivores as selective species. In contrast, coypus can be defined as more generalistic species although they exhibit a less diverse diet than the others. Total and specific trophic niche overlap values suggest that during the critical season (winter), the foraging habits of capybaras and cattle would diverge, compensating for the low plant availability. In the other seasons, the increase in plant availability would lead to a situation of high overlap in the use of resources. 1998 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00251461_v62_n1_p37_Quintana http://hdl.handle.net/20.500.12110/paper_00251461_v62_n1_p37_Quintana |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
capybara cattle diet faecal analysis niche overlap Agrnetina Parana River Delta Bos taurus Cynodon dactylon Cyperaceae Eleocharis Hydrochaeris hydrochaeris Hydrochaeris hydrochaeris Luziola peruviana Myocastor coypus Panicum grumosum Poaceae Zizaniopsis bonariensis |
| spellingShingle |
capybara cattle diet faecal analysis niche overlap Agrnetina Parana River Delta Bos taurus Cynodon dactylon Cyperaceae Eleocharis Hydrochaeris hydrochaeris Hydrochaeris hydrochaeris Luziola peruviana Myocastor coypus Panicum grumosum Poaceae Zizaniopsis bonariensis Feeding patterns of capybara Hydrochaeris hydrochaeris (rodentia, hydrochaeridae) and cattle in the non-insular area of the Lower Delta of the Parana River, Argentina |
| topic_facet |
capybara cattle diet faecal analysis niche overlap Agrnetina Parana River Delta Bos taurus Cynodon dactylon Cyperaceae Eleocharis Hydrochaeris hydrochaeris Hydrochaeris hydrochaeris Luziola peruviana Myocastor coypus Panicum grumosum Poaceae Zizaniopsis bonariensis |
| description |
Feeding habits of capybaras and cattle living in the non-insular area of the Lower Delta region were studied. In addition, samples from coypu were also analyzed. This study was made using a microhistological analysis of faeces. Faeces samples were taken seasonally during 2 years, between 1991 and 1993. The results showed that Poaceae was the main consumed group throughout the year for both capybaras and cattle, with the exception of winter, where cattle consumed a higher proportion of Cyperaceae. For the three herbivores, only a few items constituted the most important contribution to the diets. Five food items (Cynodon dactylon, Panicum grumosum, Luziola peruviana, Zizaniopsis bonariensis and Eleocharis spp.) represented more than 60% of the diet for both capybara and cattle in every season. A similar foraging pattern was shown by both herbivores during the 2 years. Capybara and cattle diet compositions during the same season were similar, except in summer, when both diets were different. This last fact was also observed when the winter diets of the first two herbivores were compared with that of coypus. With the exception of summer, the seasonal trophic niche breadths were similar between capybaras and cattle. However, their values would be indicating a relatively narrow niche in every season, defining both herbivores as selective species. In contrast, coypus can be defined as more generalistic species although they exhibit a less diverse diet than the others. Total and specific trophic niche overlap values suggest that during the critical season (winter), the foraging habits of capybaras and cattle would diverge, compensating for the low plant availability. In the other seasons, the increase in plant availability would lead to a situation of high overlap in the use of resources. |
| title |
Feeding patterns of capybara Hydrochaeris hydrochaeris (rodentia, hydrochaeridae) and cattle in the non-insular area of the Lower Delta of the Parana River, Argentina |
| title_short |
Feeding patterns of capybara Hydrochaeris hydrochaeris (rodentia, hydrochaeridae) and cattle in the non-insular area of the Lower Delta of the Parana River, Argentina |
| title_full |
Feeding patterns of capybara Hydrochaeris hydrochaeris (rodentia, hydrochaeridae) and cattle in the non-insular area of the Lower Delta of the Parana River, Argentina |
| title_fullStr |
Feeding patterns of capybara Hydrochaeris hydrochaeris (rodentia, hydrochaeridae) and cattle in the non-insular area of the Lower Delta of the Parana River, Argentina |
| title_full_unstemmed |
Feeding patterns of capybara Hydrochaeris hydrochaeris (rodentia, hydrochaeridae) and cattle in the non-insular area of the Lower Delta of the Parana River, Argentina |
| title_sort |
feeding patterns of capybara hydrochaeris hydrochaeris (rodentia, hydrochaeridae) and cattle in the non-insular area of the lower delta of the parana river, argentina |
| publishDate |
1998 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00251461_v62_n1_p37_Quintana http://hdl.handle.net/20.500.12110/paper_00251461_v62_n1_p37_Quintana |
| _version_ |
1768545316246650880 |