Buscar
Mostrando ítems 1-10 de 37
Genetic identification of the ciliates from greater rheas (Rhea americana) and lesser rheas (Rhea pennata) as Balantioides coli
(Springer, 2020-02-06)
The ciliate species Balantioides coli can be cross-transmitted between humans and several animal species. Usually harmless, sometimes it can be pathogenic and cause the death of the host. In birds, B. coli has been confirmed ...
Reproductivity and reising of Greater Rhea (Rhea americana) and Lesser Rhea (Pterocnemia pennata). A review
(Eugen Ulmer Gmbh Co, 2002-03)
The Greater or Common Rhea (Rhea americana) and theLesser or Darwin’s Rhea (Pterocnemia pennata) are flight-less birds native from South America, that have conserva-tion and economic importance. Free-ranging populationsof ...
Sequential predictability of the scanning behaviour of greater rheas, Rhea americana
(Universita Degli Studi Di Firenze, 2011-01)
Some models that predict the scanning pattern to maximise the probability of predator detection by prey assume sequential randomness (i.e. lengths of inter-scan intervals are independent of each other and of the length of ...
Trophic interactions among plains vizcacha ( Lagostomus maximus ), greater rhea ( Rhea americana ), and cattle in a wetland of the Paraná River Delta Region, Argentina
(Taylor & Francis Ltd, 2009-04)
The plains vizcacha (Lagostomus maximus) and the greater rhea (Rhea americana) are considered to compete for forage with cattle in agroecosystems of South America. The aims of this research were to analyze the diet diversity ...
Physiological stress in captive Greater rheas (Rhea americana): Highly sensitive plasma corticosterone response to an ACTH challenge
(Academic Press Inc Elsevier Science, 2009-12)
Up to the present no studies have been conducted either on baseline concentrations of adrenal hormones or on hormonal responses to stress in Greater rhea (Rhea americana) and most ratite species. The aims of this work were ...
Distribution and concentration of maternal progesterone in the yolk of Greater Rhea eggs (Rhea americana)
(John Wiley & Sons Ltd, 2017-04)
Progesterone is the most concentrated maternal yolk steroid characterized to date in birds; however, no information about it is available in ratite eggs. We collected freshly laid eggs from zoo-housed Greater Rhea females ...
Uso de hábitat por el ñandú (Rhea americana) en un refugio de vida silvestre: Implicancias para la conservación y manejo de la especie
(Neotropical Ornithological Society, 2002-12)
Habitat use of the Greater Rhea (Rhea americana) in a wildlife refuge: Conservationand species management. – The habitat use of the Greater Rhea (Rhea americana) was studied from October 1997 to July 1998 in the wildlife ...
Meat quality traits in the Greater rhea (Rhea americana) as influenced by muscle, sex and age
(2018-02)
Meat from the Greater rhea (Rhea americana) could compete with traditional red meats, diversifying the market of protein products of animal origin. The meat from 32 rheas was used to study quality aspects and this included ...
Yolk corticosterone and progesterone levels in Greater Rhea (Rhea americana) eggs vary in a changing social environment
(Wiley, 2022-07)
Maternal hormones in avian egg yolks may signal and prepare offspring for the prevailing conditions. However, this adjustment requires some degree of flexibility in regulating yolk hormone deposition. The Greater Rhea (Rhea ...
Ontogenetic shape changes in the pelvis of the Greater Rhea (Aves, Palaeognathae) and their relationships with cursorial locomotion: a geometric morphometric approach
(Wiley Blackwell Publishing, Inc, 2020-06)
Knowledge of the ontogenetic pattern of morphological features is essential to improve biological interpretations. The study of morphological features of the pelvic girdle and hind limb apparatus throughout growth is an ...