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Corticosterone stress response of Greater rhea (Rhea americana) during short-term road transport
(Oxford University Press, 2013-01)
The effect of transport stress on blood corticosterone levels in captive Greater Rheas was investigated. Twelve adult individuals (7 males; 5 females) were loaded in pairs inside wooden crates and transported along a paved ...
First assessment of persistent organic pollutants in the Greater rhea (Rhea americana), a near-threatened flightless herbivorous bird of the Pampas grasslands
(Springer, 2021-06)
Persistent organic pollutants (POPs) are still globally distributed and can exert different effects on ecosystems. Little is known about the occurrence of these contaminants in terrestrial birds from South America. In this ...
Effect of maternal environment on yolk immunoreactive corticosterone and its influence on adrenocortical and behavioral activity in chicks of Greater Rhea (Rhea americana)
(Academic Press Inc Elsevier Science, 2019-08)
Maternal corticosterone in avian eggs may modify offspring phenotype in order to increase survival in poor environments. In the Greater Rhea (Rhea americana), we previously found that yolk immunoreactive corticosterone is ...
State of the art knowledge in adrenocortical and behavioral responses to environmental challenges in a threatened South American ratite: Implications to in situ and ex-situ conservation
(Academic Press Inc Elsevier Science, 2018-04)
The Greater Rhea (Rhea americana) is an endemic ratite to South America, whose wild populations have undergone a remarkable decrease due to habitat degradation and fragmentation by the expansion of the agricultural frontier, ...
Caracterización de las inmunoglobulinas del ñandú (Rhea americana)
(Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, 2013)
El objetivo de este trabajo fue caracterizar las inmunoglobulinas séricas y la IgY de la yema de huevo de ñandú, a través de las técnicas de electroforesis en acetato de celulosa, electroforesis en gel de poliacrilamida y ...
Stress response assessment during translocation of captive-bred Greater Rheas into the wild
(Springer, 2015-11)
Translocation is an extensively used conservationtool that involves exposing animals to stressful situationsthat may influence the post-release survival. In thisstudy, 20 Greater Rhea (Rhea americana) adults hatchedand ...
La densidad de poros en la cáscara no siempre es un diagnóstico fiable para las especies de RheidaeThe number of pores per area of eggshells is not always a reliable indicator of Rheidae species
(Asociacion Espanola de Arqueozoologia, 2020-07-29)
Desde finales de Pleistoceno hasta el Holoceno tardío, huesos y abundantes cásca- ras de huevos atestiguan la explotación de los Rheidae de las regiones Pampeana y Chaqueña (ñandú, Rhea americana) y la Patagonia Argentina ...
Un núcleo óseo: nuevos aportes a la comprensión de la tecnología ósea en el Gran Chaco sudamericano (Argentina)
(Cambridge University Press, 2019-04)
En este trabajo se presentan los resultados del análisis de una pieza ósea que brinda pionera información sobre aspectos tecnológicos prehispánicos, en el sector Ribereño Paraguay-Paraná del Chaco argentino. Se analizó un ...
Niche Overlap Determination Through Habitat Suitability Models: A Management Tool for Native Birds of the Argentinean PampasDeterminación de la superposición de nicho mediante modelos de adecuación de hábitat: una herramienta de manejo para aves nativas de la Pampa Argentina
(Sociedad Española de Ornitología, 2018-01)
Summary. In Argentina, predominantly in the Pampas ecoregion, the natural rangelands have increasingly been replaced by crops. Avifaunal studies have shown that the population density of several species decreased as the ...
Tarsometatarsus, eggshells, and the species level identification of large-sized flightless birds from Boyo Paso 2 (Sierras of Córdoba, Argentina)
(John Wiley & Sons Ltd, 2019-07)
The article presents the taxonomic study carried out on the Rheidae (Palaeognathae: Ratitae) faunal remains recovered in the open-air archaeological site Boyo Paso 2 dated at approximately 1500–750 years BP (Sierras of ...