Food habits of Oligoryzomys longicaudatus (Rodentia) in a steppe–forest transitional area of Argentinean Patagonia
We described the spatial and seasonal variation of feeding habits of Oligoryzomys longicaudatus in four environments of the steppe-forest transition zone of Argentinean Patagonia. Composition of fecal pellets collected from live-trap captures was determined with microhistological techniques using an...
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| Format: | Artículo |
| Language: | Inglés |
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Asociación Argentina de Ecología
2018
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| Online Access: | http://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/7/7 http://hdl.handle.net/20.500.12123/4076 |
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| author | Polop, Francisco Sepulveda, Lorena Pelliza Sbriller, Alicia Polop, Jaime Provensal, M. Cecilia |
| author_browse | Pelliza Sbriller, Alicia Polop, Francisco Polop, Jaime Provensal, M. Cecilia Sepulveda, Lorena |
| author_facet | Polop, Francisco Sepulveda, Lorena Pelliza Sbriller, Alicia Polop, Jaime Provensal, M. Cecilia |
| author_sort | Polop, Francisco |
| collection | INTA Digital |
| description | We described the spatial and seasonal variation of feeding habits of Oligoryzomys longicaudatus in four environments of the steppe-forest transition zone of Argentinean Patagonia. Composition of fecal pellets collected from live-trap captures was determined with microhistological techniques using an identification key of representative plants of our study areas. Fruits and seeds constituted 57.2% of O. longicaudatus diets, followed by foliage (26.8%) and arthropods (16.0%). Fruits and seeds, foliage parts, and arthropods were
primarily found in individuals from shrublands, forests, and peridomestic areas, whereas foliage predominated in pastures. Similarity index revealed differences between pastures and the other environments. Diet in shrubland showed differences among seasons, but not among years. Fruits of Rosa spp. constituted the main food consumed in shrubland, forest and peridomestic environments mainly in autumn and winter, whereas in spring and summer high proportions of arthropods and other items were eaten. Thus, O. longicaudatus could be described as frugivorous in this region, explained by an opportunistic behavior and the spatial variation of available resources. |
| format | Artículo |
| id | INTA4076 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | Asociación Argentina de Ecología |
| publisherStr | Asociación Argentina de Ecología |
| record_format | dspace |
| spelling | INTA40762018-12-13T13:20:20Z Food habits of Oligoryzomys longicaudatus (Rodentia) in a steppe–forest transitional area of Argentinean Patagonia Polop, Francisco Sepulveda, Lorena Pelliza Sbriller, Alicia Polop, Jaime Provensal, M. Cecilia Rodentia Roedores Hábitos Alimentarios Medio Ambiente Estepas Bosques Mice Feeding Habits Environment Steppes Forests Oligoryzomys longicaudatus Ratón de Cola Larga Región Patagónica We described the spatial and seasonal variation of feeding habits of Oligoryzomys longicaudatus in four environments of the steppe-forest transition zone of Argentinean Patagonia. Composition of fecal pellets collected from live-trap captures was determined with microhistological techniques using an identification key of representative plants of our study areas. Fruits and seeds constituted 57.2% of O. longicaudatus diets, followed by foliage (26.8%) and arthropods (16.0%). Fruits and seeds, foliage parts, and arthropods were primarily found in individuals from shrublands, forests, and peridomestic areas, whereas foliage predominated in pastures. Similarity index revealed differences between pastures and the other environments. Diet in shrubland showed differences among seasons, but not among years. Fruits of Rosa spp. constituted the main food consumed in shrubland, forest and peridomestic environments mainly in autumn and winter, whereas in spring and summer high proportions of arthropods and other items were eaten. Thus, O. longicaudatus could be described as frugivorous in this region, explained by an opportunistic behavior and the spatial variation of available resources. Describimos la variación espacial y temporal de los hábitos alimentarios de Oligoryzomys longicaudatus en cuatro ambientes de una área de transición bosque-estepa en la Patagonia argentina. La composición de las heces de los roedores, colectadas en las trampas de captura viva, fue determinada con técnicas microhistológicas, utilizando una clave de identificación de plantas representativas en las áreas de estudio. Los frutos y las semillas constituyeron el 57,2% de la dieta de O. longicaudatus, seguidas por partes vegetativas (26,8%) y artrópodos (16%). En las heces de individuos capturados en matorrales, bosques y hábitats peridomésticos se encontraron principalmente frutas y semillas, partes vegetativas y artrópodos, mientras que las partes vegetativas predominaron en las de pastizales. Los índices de similitud revelaron esas diferencias entre las dietas en los pastizales y en el resto de los hábitats. La dieta de los individuos capturados en matorrales mostró leves diferencias entre estaciones, pero no entre años. Los frutos de la Rosa spp. constituyeron el principal alimento, fundamentalmente en otoño e invierno, mientras que en primavera y verano consumieron altos porcentajes de artrópodos y otros ítems. Así, O. longicaudatus podría ser descripto como frugívoro en esta región, lo que se explica por un comportamiento oportunista y la variación espacial del recurso disponible. EEA Bariloche Fil: Polop, Francisco. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Físico-Químicas y Naturales. Departamento de Ciencias Naturales; Argentina Fil: Sepulveda, Lorena. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Laboratorio de Microhistología; Argentina Fil: Pelliza Sbriller, Alicia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Laboratorio de Microhistología; Argentina Fil: Polop, Jaime. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Físico-Químicas y Naturales. Departamento de Ciencias Naturales; Argentina Fil: Provensal, M. Cecilia. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Físico-Químicas y Naturales. Departamento de Ciencias Naturales; Argentina 2018-12-13T13:18:07Z 2018-12-13T13:18:07Z 2014 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/7/7 http://hdl.handle.net/20.500.12123/4076 0327-5477 1667-782X eng info:eu-repo/semantics/openAccess 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 Asociación Argentina de Ecología Ecología Austral 24 (3) : 304-310 (2014) |
| spellingShingle | Rodentia Roedores Hábitos Alimentarios Medio Ambiente Estepas Bosques Mice Feeding Habits Environment Steppes Forests Oligoryzomys longicaudatus Ratón de Cola Larga Región Patagónica Polop, Francisco Sepulveda, Lorena Pelliza Sbriller, Alicia Polop, Jaime Provensal, M. Cecilia Food habits of Oligoryzomys longicaudatus (Rodentia) in a steppe–forest transitional area of Argentinean Patagonia |
| title | Food habits of Oligoryzomys longicaudatus (Rodentia) in a steppe–forest transitional area of Argentinean Patagonia |
| title_full | Food habits of Oligoryzomys longicaudatus (Rodentia) in a steppe–forest transitional area of Argentinean Patagonia |
| title_fullStr | Food habits of Oligoryzomys longicaudatus (Rodentia) in a steppe–forest transitional area of Argentinean Patagonia |
| title_full_unstemmed | Food habits of Oligoryzomys longicaudatus (Rodentia) in a steppe–forest transitional area of Argentinean Patagonia |
| title_short | Food habits of Oligoryzomys longicaudatus (Rodentia) in a steppe–forest transitional area of Argentinean Patagonia |
| title_sort | food habits of oligoryzomys longicaudatus rodentia in a steppe forest transitional area of argentinean patagonia |
| topic | Rodentia Roedores Hábitos Alimentarios Medio Ambiente Estepas Bosques Mice Feeding Habits Environment Steppes Forests Oligoryzomys longicaudatus Ratón de Cola Larga Región Patagónica |
| url | http://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/7/7 http://hdl.handle.net/20.500.12123/4076 |
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