Results 21 to 30 of about 3,425 (196)

Morphological aspects of epididymal microscopy and rete testis in greater Rhea Americana [PDF]

open access: yesCiência Rural
: The purpose of this research was to study the histology and describe the microscopy findings of the epididymis epithelium of greater Rhea americana at three time periods: November 2005 (n=14), December 2006 (n= 20), and May 2007 (n= 20), to observe and
Breno Nahuel Freneau   +3 more
doaj   +2 more sources

Finite-element modelling of mechanobiological factors influencing sesamoid tissue morphology in the patellar tendon of an ostrich [PDF]

open access: yes, 2017
The appearance and shape of sesamoid bones within a tendon or ligament wrapping around a joint are understood to be influenced by both genetic and epigenetic factors.
Carter DR   +6 more
core   +1 more source

Arterial vascularization of the cloacal bursa of the greater rhea (Rhea americana americana Linnaeus, 1758)

open access: yesBioscience Journal, 2016
The cloacal bursa is an organ in fowls, which triggers lymphocyte maturation and transference to other tissues. Since there is scanty information on its morphology in wild species in spite of its importance in the fowls´ immunological system, current ...
Radan Elvis Matias de Oliveira   +7 more
doaj   +3 more sources

Morphology of the cardiovascular system in greater rhea (Rhea americana americana Linnaeus, 1758)

open access: yesMedicina Veterinária, 2021
Greater rheas have been the subject of scientific studies in the various areas of veterinary and biology in order to obtain essential information for their captivity management.
Hélio Noberto Araújo Júnior   +8 more
doaj  

Drug Technology in Hunting Practice

open access: yesEuropean Pharmaceutical Journal, 2021
Antiparasitic therapy in living ratites is based on the right dose and efficacy is only when the drug is pharmaceutically stable and safe. Ivermectin is considered to be the most widely used drug in the treatment of parasitosis in ruminants worlwide. For
Laca Megyesi S.   +5 more
doaj   +1 more source

A phylogeny of the tinamous (Aves: Palaeognathiformes) based on integumentary characters [PDF]

open access: yes, 2002
A cladistic analysis of the tinamous, including the 47 currently recognized species and some distinct subspecies, was conducted based on 80 integumentary characters from adult and natal plumage, ramphoteca (corneum sheath of bill), and podoteca (horny ...
Bertelli, Sara Beatriz   +2 more
core   +1 more source

Osteological and Soft-Tissue Evidence for Pneumatization in the Cervical Column of the Ostrich (Struthio camelus) and Observations on the Vertebral Columns of Non-Volant, Semi-Volant and Semi-Aquatic Birds [PDF]

open access: yes, 2015
© 2015 Apostolaki et al. This is an open access article distributed under the terms of the Creative Commons Attribution License [4.0], which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source ...
A Milani   +77 more
core   +8 more sources

Broad-scale recombination pattern in the primitive bird Rhea americana (Ratites, Palaeognathae). [PDF]

open access: yesPLoS ONE, 2017
Birds have genomic and chromosomal features that make them an attractive group to analyze the evolution of recombination rate and the distribution of crossing over.
Lucía Del Priore, María Inés Pigozzi
doaj   +1 more source

Évolution biologique et ADN ancien [PDF]

open access: yes, 2006
Après deux décennies de découvertes et de controverses, la paléogénétique semble, sinon avoir atteint l’âge de raison, du moins avoir délaissé les frasques de son impétueuse jeunesse.
Barriel, Véronique, Debruyne, Régis
core   +1 more source

Diet selection by the lesser rhea (Rhea pennata pennata) in Payunia, Northern Patagonia (Mendoza, Argentina)

open access: yesRevista de la Facultad de Ciencias Agrarias, 2022
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.
Silvia Puig   +3 more
doaj  

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