Selección dietaria del choique (Rhea pennata pennata) en Payunia, Patagonia Septentrional (Mendoza, Argentina)
The lesser rhea (family Rheidae) is a flightless large bird of South America, threatened due to habitat loss, hunting and egg collecting, with special concern in Northern Patagonia. Diet and food availability were estimated throughout the year by micro-histological analysis and point-quadrat transe...
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| Formato: | Online |
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Facultad de Ciencias Agrarias-UNCuyo
2022
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| Acceso en línea: | https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/6211 |
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I11-R107article-62112022-10-18T17:30:45Z Diet selection by the lesser rhea (Rhea pennata pennata) in Payunia, Northern Patagonia (Mendoza, Argentina) Selección dietaria del choique (Rhea pennata pennata) en Payunia, Patagonia Septentrional (Mendoza, Argentina) Puig, Silvia Cona, Mónica I. Videla, Fernando Méndez, Eduardo ambientes áridos composición dietaria disponibilidad alimentaria ecología alimentaria ratites Rheidae arid environments diet composition food availability feeding ecology ratites Rheidae The lesser rhea (family Rheidae) is a flightless large bird of South America, threatened due to habitat loss, hunting and egg collecting, with special concern in Northern Patagonia. Diet and food availability were estimated throughout the year by micro-histological analysis and point-quadrat transects in a landscape inside and another outside the Payunia Reserve, the northernmost part of the Rhea pennata pennata distribution. Significant differences were detected by Kruskall-Wallis ANOVA, food selection by Chi-square test and Bailey’s confidence interval. A strong food selection characterized the diet of lesser rheas, dominated by leaves of shrubs and forbs, complemented by dicot seeds and a few insects. This agrees with the documented low dietary overlap with other herbivores in Payunia. Dietary changes agree with the expected from the selective quality hypothesis. Food availability was better inside than outside the protected area, with probable conservation effects for lesser rheas. Seeds, forbs and soft grasses could be for lesser rheas some key food resources to survive during unfavorable seasons in arid environments without "mallines", as Payunia. Shrubby patches, with high availability of preferred food items (tall shrubs and forbs), stood out as key habitats. Therefore, avoiding fire and woody plant removal is crucial for the conservation of lesser rheas in the northern of its range. The lesser rhea (family Rheidae) is a flightless large bird of South America, threatened due to habitat loss, hunting and egg collecting, with special concern in Northern Patagonia. Diet and food availability were estimated throughout the year by micro-histological analysis and point-quadrat transects in a landscape inside and another outside the Payunia Reserve, the northernmost part of the Rhea pennata pennata distribution. Significant differences were detected by Kruskall-Wallis ANOVA, food selection by Chi-square test and Bailey’s confidence interval. A strong food selection characterized the diet of lesser rheas, dominated by leaves of shrubs and forbs, complemented by dicot seeds and a few insects. This agrees with the documented low dietary overlap with other herbivores in Payunia. Dietary changes agree with the expected from the selective quality hypothesis. Food availability was better inside than outside the protected area, with probable conservation effects for lesser rheas. Seeds, forbs and soft grasses could be for lesser rheas some key food resources to survive during unfavorable seasons in arid environments without "mallines", as Payunia. Shrubby patches, with high availability of preferred food items (tall shrubs and forbs), stood out as key habitats. Therefore, avoiding fire and woody plant removal is crucial for the conservation of lesser rheas in the northern of its range. Facultad de Ciencias Agrarias-UNCuyo 2022-10-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/6211 Revista de la Facultad de Ciencias Agrarias UNCuyo; Vol. 45 No. 1 (2013): January-June; 211-224 Revista de la Facultad de Ciencias Agrarias UNCuyo; Vol. 45 Núm. 1 (2013): Enero-Junio; 211-224 1853-8665 0370-4661 eng https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/6211/5033 https://creativecommons.org/licenses/by-nc-sa/3.0/deed.es |
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Universidad Nacional de Cuyo |
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Revistas en línea |
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Revistas en línea |
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Revista de la Facultad de Ciencias Agrarias |
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Revista de la Facultad de Ciencias Agrarias |
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I-11 |
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R-107 |
| language |
eng |
| format |
Online |
| author |
Puig, Silvia Cona, Mónica I. Videla, Fernando Méndez, Eduardo |
| spellingShingle |
Puig, Silvia Cona, Mónica I. Videla, Fernando Méndez, Eduardo Selección dietaria del choique (Rhea pennata pennata) en Payunia, Patagonia Septentrional (Mendoza, Argentina) ambientes áridos composición dietaria disponibilidad alimentaria ecología alimentaria ratites Rheidae arid environments diet composition food availability feeding ecology ratites Rheidae |
| author_facet |
Puig, Silvia Cona, Mónica I. Videla, Fernando Méndez, Eduardo |
| author_sort |
Puig, Silvia |
| title |
Selección dietaria del choique (Rhea pennata pennata) en Payunia, Patagonia Septentrional (Mendoza, Argentina) |
| title_short |
Selección dietaria del choique (Rhea pennata pennata) en Payunia, Patagonia Septentrional (Mendoza, Argentina) |
| title_full |
Selección dietaria del choique (Rhea pennata pennata) en Payunia, Patagonia Septentrional (Mendoza, Argentina) |
| title_fullStr |
Selección dietaria del choique (Rhea pennata pennata) en Payunia, Patagonia Septentrional (Mendoza, Argentina) |
| title_full_unstemmed |
Selección dietaria del choique (Rhea pennata pennata) en Payunia, Patagonia Septentrional (Mendoza, Argentina) |
| title_sort |
diet selection by the lesser rhea (rhea pennata pennata) in payunia, northern patagonia (mendoza, argentina) |
| description |
The lesser rhea (family Rheidae) is a flightless large bird of South America, threatened due to habitat loss, hunting and egg collecting, with special concern in Northern Patagonia. Diet and food availability were estimated throughout the year by micro-histological analysis and point-quadrat transects in a landscape inside and another outside the Payunia Reserve, the northernmost part of the Rhea pennata pennata distribution. Significant differences were detected by Kruskall-Wallis ANOVA, food selection by Chi-square test and Bailey’s confidence interval. A strong food selection characterized the diet of lesser rheas, dominated by leaves of shrubs and forbs, complemented by dicot seeds and a few insects. This agrees with the documented low dietary overlap with other herbivores in Payunia. Dietary changes agree with the expected from the selective quality hypothesis. Food availability was better inside than outside the protected area, with probable conservation effects for lesser rheas. Seeds, forbs and soft grasses could be for lesser rheas some key food resources to survive during unfavorable seasons in arid environments without "mallines", as Payunia. Shrubby patches, with high availability of preferred food items (tall shrubs and forbs), stood out as key habitats. Therefore, avoiding fire and woody plant removal is crucial for the conservation of lesser rheas in the northern of its range. |
| publisher |
Facultad de Ciencias Agrarias-UNCuyo |
| publishDate |
2022 |
| url |
https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/6211 |
| topic |
ambientes áridos composición dietaria disponibilidad alimentaria ecología alimentaria ratites Rheidae arid environments diet composition food availability feeding ecology ratites Rheidae |
| topic_facet |
ambientes áridos composición dietaria disponibilidad alimentaria ecología alimentaria ratites Rheidae arid environments diet composition food availability feeding ecology ratites Rheidae |
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