The selfish preen: absence of allopreening in Palaeognathae and its socio-cognitive implications [PDF]
Animal Cognition, 2023 AbstractPreening behaviours are widespread in extant birds. While most birds appear to autopreen (self-directed preening), allopreening (preening directed at conspecifics) seems to have emerged only in certain species, but across many families. Allopreening has been hypothesised to reinforce mutual relationships and cooperation between individuals, and
Thomas Rejsenhus Jensen +2 more
exaly +6 more sources
Broad-scale recombination pattern in the primitive bird Rhea americana (Ratites, Palaeognathae). [PDF]
PLoS 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 +7 more sources
The phylogenetic significance of the morphology of the syrinx, hyoid and larynx, of the southern cassowary, Casuarius casuarius (Aves, Palaeognathae) [PDF]
BMC Evolutionary Biology, 2019 Background Palaeognathae is a basal clade within Aves and include the large and flightless ratites and the smaller, volant tinamous. Although much research has been conducted on various aspects of palaeognath morphology, ecology, and evolutionary history,
Phoebe L. McInerney +3 more
doaj +4 more sources
The Length Polymorphism of the 9th Intron in the Avian CHD1 Gene Allows Sex Determination in Some Species of Palaeognathae. [PDF]
Genes (Basel), 2022 In palaeognathous birds, several PCR-based methods and a range of genes and unknown genomic regions have been studied for the determination of sex. Many of these methods have proven to be unreliable, complex, expensive, and time-consuming. Even the most widely used PCR markers for sex typing in birds, the selected introns of the highly conserved CHD1 ...
Kroczak A, Wierzbicki H, Urantówka AD.
europepmc +4 more sources
Analysis of Sex Chromosome Evolution in the Clade Palaeognathae from Phased Genome Assembly [PDF]
Genome Biology and Evolution, 2021 Abstract Birds in the clade Palaeognathae, excluding Tinamiformes, have morphologically conserved karyotypes and less differentiated ZW sex chromosomes compared with those of other birds. In particular, the sex chromosomes of the ostrich and emu have exceptionally large recombining pseudoautosomal regions (PARs), whereas non-PARs are ...
Miki Okuno +2 more
exaly +5 more sources
Comparative ossification sequence and skeletal development of the postcranium of palaeognathous birds (Aves: Palaeognathae) [PDF]
Zoological Journal of the Linnean Society, 2009 Palaeognaths constitute one of the most basal lineages of extant birds, and are also one of the most morphologically diverse avian orders. Their skeletal development is relatively unknown, in spite of their important phylogenetic position. Here, we compare the development of the postcranial skeleton in the emu (Dromaius novaehollandiae), ostrich ...
Maxwell, Erin E., Larsson, Hans C. E.
openaire +2 more sources
New view on the organization and evolution of Palaeognathae mitogenomes poses the question on the ancestral gene rearrangement in Aves [PDF]
BMC Genomics, 2020 Background Bird mitogenomes differ from other vertebrates in gene rearrangement. The most common avian gene order, identified first in Gallus gallus, is considered ancestral for all Aves.
Adam Dawid Urantówka +2 more
doaj +3 more sources
Whole-genome analyses resolve the phylogeny of flightless birds (Palaeognathae) in the presence of an empirical anomaly zone [PDF]
Systematic Biology, 2018 Abstract Palaeognathae represent one of the two basal lineages in modern birds, and comprise the volant (flighted) tinamous and the flightless ratites. Resolving palaeognath phylogenetic relationships has historically proved difficult, and short internal branches separating major palaeognath lineages in previous molecular phylogenies ...
Cloutier, Alison +5 more
openaire +3 more sources
A new Transantarctic relationship: morphological evidence for a Rheidae-Dromaiidae-Casuariidae clade (Aves, Palaeognathae, Ratitae) [PDF]
Zoological Journal of the Linnean Society, 2009 Although ratites have been studied in considerable detail, avian systematists have been unable to reach a consensus regarding their relationships. Morphological studies indicate a basal split separating Apterygidae from all other extant ratites, and a sister-group relationship between Rheidae and Struthionidae.
Bourdon, Emmanuel +2 more
openaire +4 more sources
Hindlimb morphology of Palaeotis suggests palaeognathous affinities of the Geranoididae and other “crane-like” birds from the Eocene of the Northern Hemisphere [PDF]
Acta Palaeontologica Polonica, 2019 The early/middle Eocene Palaeotis weigelti is a flightless bird, which occurs in the fossil localities Messel and Geiseltal (Germany). The species is assigned to the Palaeognathae and some authors considered it to be a stem group representative of the ...
Gerald Mayr
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