| comparison of the z and w sex chromosomal architectures in elegant crested tinamou (eudromia elegans) and ostrich (struthio camelus) and the process of sex chromosome differentiation in palaeognathous birds. | to clarify the process of avian sex chromosome differentiation in palaeognathous birds, we performed molecular and cytogenetic characterization of w chromosome-specific repetitive dna sequences for elegant crested tinamou (eudromia elegans, tinamiformes) and constructed comparative cytogenetic maps of the z and w chromosomes with nine chicken z-linked gene homologues for e. elegans and ostrich (struthio camelus, struthioniformes). a novel family of w-specific repetitive sequences isolated from e ... | 2007 | 17219176 |
| the molecular basis of chromosome orthologies and sex chromosomal differentiation in palaeognathous birds. | palaeognathous birds (struthioniformes and tinamiformes) have morphologically conserved karyotypes and less differentiated zw sex chromosomes. to delineate interspecific chromosome orthologies in palaeognathous birds we conducted comparative chromosome painting with chicken (gallus gallus, gga) chromosome 1-9 and z chromosome paints (gga1-9 and ggaz) for emu, double-wattled cassowary, ostrich, greater rhea, lesser rhea and elegant crested tinamou. all six species showed the same painting pattern ... | 2007 | 17605112 |
| tetrameres (tetrameres) tinamicola sp. n. from the crested tinamou, eudromia elegans, with comments on the subgenus petrowimeres (nematoda: tetrameridae). | tetrameres (tetrameres) tinamicola sp. n. is described from the crested tinamou, eudromia elegans, of argentina. the new species is most similar to other alate species of the subgenus tetrameres, but it can be differentiated on the basis of its large size, length and structure of the left spicule, and arrangement of the 5 subventral and 3 sublateral pairs of postanal papillae. a review of the subgenus petrowimeres is presented including the reassignment of several species to the subgenus tetrame ... | 1970 | 1185422 |
| comparative intralimb coordination in avian bipedal locomotion. | analyses of how intralimb coordination during locomotion varies within and across different taxa are necessary for understanding the morphological and neurological basis for locomotion in general. previous findings suggest that intralimb proportions are the major source of kinematic variation that governs intralimb coordination across taxa. also, independence of kinematics from habitat preference and phylogenetic position has been suggested for mammals. this leads to the hypothesis that among eq ... | 2012 | 22899525 |
| diverse stages of sex-chromosome differentiation in tinamid birds: evidence from crossover analysis in eudromia elegans and crypturellus tataupa. | all extant birds share the same sex-chromosome system: zz males and zw females with striking differences in the stages of sex-chromosome differentiation between the primitive palaeognathus ratites and the large majority of avian species grouped within neognaths. evolutionarily close to ratites is the neotropical order tinamiformes that has been scarcely explored regarding their zw pair morphology and constitution. tinamous, when compared to ratites, constitute a large group among palaeognathae, ... | 2011 | 21567220 |
| genomic support for a moa-tinamou clade and adaptive morphological convergence in flightless ratites. | one of the most startling discoveries in avian molecular phylogenetics is that the volant tinamous are embedded in the flightless ratites, but this topology remains controversial because recent morphological phylogenies place tinamous as the closest relative of a monophyletic ratite clade. here, we integrate new phylogenomic sequences from 1,448 nuclear dna loci totaling almost 1 million bp from the extinct little bush moa, chilean tinamou, and emu with available sequences from ostrich, elegant ... | 2014 | 24825849 |
| analysing avian eggshell pigments with raman spectroscopy. | avian eggshells are variable in appearance, including coloration. here, we demonstrate that raman spectroscopy can provide accurate diagnostic information about major eggshell constituents, including the pigments biliverdin and protoporphyrin ix. eggshells pigmented with biliverdin showed a series of pigment-diagnostic raman peaks under 785 nm excitation. eggshells pigmented with protoporphyrin ix showed strong emission under 1064 nm and 785 nm excitation, whereas resonance raman spectra (351 nm ... | 2015 | 26113138 |
| cerebral and ocular ochroconiasis in 2 elegant crested tinamou (eudromia elegans) chicks. | two elegant crested tinamou chicks (eudromia elegans), aged 27 and 50 days, respectively, died following acute onset of weakness and neurologic disease. microscopically, the cerebral hemispheres of both chicks and the optic lobes of 1 chick contained multifocal granulomatous and heterophilic inflammation and necrosis with intralesional pigmented, thin-walled, fungal hyphae. in 1 chick, hyphae extended along the optic nerve into the globe and were associated with severe granulomatous and heteroph ... | 2015 | 25341678 |
| reference values for hematology, plasma biochemical analysis, plasma protein electrophoresis, and aspergillus serology in elegant-crested tinamou (eudromia elegans). | elegant-crested tinamou (eudromia elegans) are members of the family tinamidae. a review of postmortem records at the saint louis zoo suggests that this species is highly susceptible to aspergillosis. antemortem detection of aspergillus infections can be aided by evaluating results of hematologic, plasma biochemical, protein electrophoretic, and aspergillus antigen and antibody serologic testing. to establish species-specific reference intervals for these parameters in elegant-crested tinamou, b ... | 2013 | 23772450 |
| on the evolution of noise-dependent vocal plasticity in birds. | signal plasticity is considered an important step in the evolution of animal communication. in acoustic communication, signal transmission is often constrained by background noise. one adaptation to evade acoustic signal masking is the lombard effect, in which an animal increases its vocal amplitude in response to an increase in background noise. this form of signal plasticity has been found in mammals, including humans, and some birds, but not frogs. however, the evolution of the lombard effect ... | 2012 | 22977069 |
| [quantitative study of encephalic components in 3 tinamid species, with an ecoethological approach (birds: tinamidae)]. | the encephalon of three tinamids: eudromia elegans, nothura maculosa, and rhynchotus rufescens are quantitatively analyzed. both relative volumes and cerebral indexes are calculated for eleven encephalic components. results are discussed from an eco-etiological approach. the relative size of encephalic components in eudromia, rhynchotus, and nothura indicate a close relationship among brain components and some behavioral patterns and the environment. marked differences in the cerebral organizati ... | 1993 | 7784697 |
| sleep-related electrophysiology and behavior of tinamous (eudromia elegans): tinamous do not sleep like ostriches. | the functions of slow wave sleep (sws) and rapid eye movement (rem) sleep, distinct sleep substates present in both mammals and birds, remain unresolved. one approach to gaining insight into their function is to trace the evolution of these states through examining sleep in as many taxonomic groups as possible. the mammalian and avian clades are each composed of two extant groups, i.e., the monotremes (echidna and platypus) and therian (marsupial and eutherian [or placental]) mammals, and palaeo ... | 2017 | 28683451 |
| new avian hepadnavirus in palaeognathous bird, germany. | in 2015, we identified an avian hepatitis b virus associated with hepatitis in a group of captive elegant-crested tinamous (eudromia elegans) in germany. the full-length genome of this virus shares <76% sequence identity with other avihepadnaviruses. the virus may therefore be considered a new extant avian hepadnavirus. | 2017 | 29148393 |
| expanding the eggshell colour gamut: uroerythrin and bilirubin from tinamou (tinamidae) eggshells. | to date, only two pigments have been identified in avian eggshells: rusty-brown protoporphyrin ix and blue-green biliverdin ixα. most avian eggshell colours can be produced by a mixture of these two tetrapyrrolic pigments. however, tinamou (tinamidae) eggshells display colours not easily rationalised by combination of these two pigments alone, suggesting the presence of other pigments. here, through extraction, derivatization, spectroscopy, chromatography, and mass spectrometry, we identify two ... | 2020 | 32647200 |
| anesthesia and anesthetic-related complications of 8 elegant-crested tinamous (eudromia elegans) undergoing experimental surgery. | the aim of this study was to describe the anesthetic effects of an injectable anesthetic protocol, based on ketamine, midazolam, and medetomidine, followed by inhalational sevoflurane, in 8 elegant-crested tinamous (eudromia elegans) undergoing experimental surgery. initial doses for both injectable agents were tested in 1 bird and then refined with an algorithm based on the effects observed in the pilot procedure. heart and respiratory rates, as well as nociceptive reflexes, were evaluated befo ... | 2020 | 32237678 |