Habitat use and diet in sympatric species of rodents of the low Paraná delta, Argentina
Plant cover availability has been mentioned as one of the most important resources determining cricetid habitat use. In this paper, we describe the effect of variations in the principal dietary items (identified through in situ dietary studies) on the use of low and up-habitats by Oxymycterus rutila...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00251461_v65_n2_p167_Suarez |
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todo:paper_00251461_v65_n2_p167_Suarez2023-10-03T14:35:30Z Habitat use and diet in sympatric species of rodents of the low Paraná delta, Argentina Suárez, O.V. Bonaventura, S.M. Argentina Cricetid habitat use Sympatric species behavioral ecology diet habitat use Argentina Buenos Aires Province Parana Delta Akodon azarae Olygoryzomys delticola Oxymycterus rutilans Scapteromys tumidus Plant cover availability has been mentioned as one of the most important resources determining cricetid habitat use. In this paper, we describe the effect of variations in the principal dietary items (identified through in situ dietary studies) on the use of low and up-habitats by Oxymycterus rutilans, Akodon azarae, Scapteromys tumidus and Olygoryzomys delticola, in the low delta from Buenos Aires. Our results show that A. azarae feed mainly on invertebrates and to a lesser degree, on plant remains. Invertebrates are also the principal item in S. tumidus and O. rutilans diet, while O. delticola prefer green remnants. Both S. tumidus and O. delticola use low habitats all year round, while A. azarae and O. rutilans show seasonal variations in their habitat preference. In neither case, seasonal variations were associated to food availability. We suggest that the morphological adaptations to amphibious life of S. tumidus and the climbing habits of O. delticola made these species more efficient in low habitat (i.e., floodable and with an arboreal-shrub stratus), than A. azarae and O. rutilans. In the latter species, the seasonal variations of their habitat use seem to be a strategy used by populations to avoid the negative effects of extreme temperatures. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00251461_v65_n2_p167_Suarez |
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Universidad de Buenos Aires |
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I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Argentina Cricetid habitat use Sympatric species behavioral ecology diet habitat use Argentina Buenos Aires Province Parana Delta Akodon azarae Olygoryzomys delticola Oxymycterus rutilans Scapteromys tumidus |
| spellingShingle |
Argentina Cricetid habitat use Sympatric species behavioral ecology diet habitat use Argentina Buenos Aires Province Parana Delta Akodon azarae Olygoryzomys delticola Oxymycterus rutilans Scapteromys tumidus Suárez, O.V. Bonaventura, S.M. Habitat use and diet in sympatric species of rodents of the low Paraná delta, Argentina |
| topic_facet |
Argentina Cricetid habitat use Sympatric species behavioral ecology diet habitat use Argentina Buenos Aires Province Parana Delta Akodon azarae Olygoryzomys delticola Oxymycterus rutilans Scapteromys tumidus |
| description |
Plant cover availability has been mentioned as one of the most important resources determining cricetid habitat use. In this paper, we describe the effect of variations in the principal dietary items (identified through in situ dietary studies) on the use of low and up-habitats by Oxymycterus rutilans, Akodon azarae, Scapteromys tumidus and Olygoryzomys delticola, in the low delta from Buenos Aires. Our results show that A. azarae feed mainly on invertebrates and to a lesser degree, on plant remains. Invertebrates are also the principal item in S. tumidus and O. rutilans diet, while O. delticola prefer green remnants. Both S. tumidus and O. delticola use low habitats all year round, while A. azarae and O. rutilans show seasonal variations in their habitat preference. In neither case, seasonal variations were associated to food availability. We suggest that the morphological adaptations to amphibious life of S. tumidus and the climbing habits of O. delticola made these species more efficient in low habitat (i.e., floodable and with an arboreal-shrub stratus), than A. azarae and O. rutilans. In the latter species, the seasonal variations of their habitat use seem to be a strategy used by populations to avoid the negative effects of extreme temperatures. |
| format |
JOUR |
| author |
Suárez, O.V. Bonaventura, S.M. |
| author_facet |
Suárez, O.V. Bonaventura, S.M. |
| author_sort |
Suárez, O.V. |
| title |
Habitat use and diet in sympatric species of rodents of the low Paraná delta, Argentina |
| title_short |
Habitat use and diet in sympatric species of rodents of the low Paraná delta, Argentina |
| title_full |
Habitat use and diet in sympatric species of rodents of the low Paraná delta, Argentina |
| title_fullStr |
Habitat use and diet in sympatric species of rodents of the low Paraná delta, Argentina |
| title_full_unstemmed |
Habitat use and diet in sympatric species of rodents of the low Paraná delta, Argentina |
| title_sort |
habitat use and diet in sympatric species of rodents of the low paraná delta, argentina |
| url |
http://hdl.handle.net/20.500.12110/paper_00251461_v65_n2_p167_Suarez |
| work_keys_str_mv |
AT suarezov habitatuseanddietinsympatricspeciesofrodentsofthelowparanadeltaargentina AT bonaventurasm habitatuseanddietinsympatricspeciesofrodentsofthelowparanadeltaargentina |
| _version_ |
1807315448123883520 |