Results 41 to 50 of about 1,108 (163)
Geometric morphometrics of the skull of Tinamidae (Aves, Palaeognathae)
Zoology, 2010 The Tinamidae comprise exclusively Neotropical palaegnathous birds, with homogeneous body morphology and no sexual dimorphism. The goal of this work was to explore the variation in skull morphology between taxa and its possible correspondence with features such as diet or gender using geometric morphometric tools.
Degrange, Federico Javier +1 more
openaire +3 more sources
Cytoplasmic Shift of Interferon Regulatory Factors Co-Evolved With Jawed Vertebrate Innate Immunity. [PDF]
J Med VirolABSTRACT The emergence of jaws in early vertebrates introduced a novel feeding apparatus and powerful oral defenses, but it also increased the risk of physical injury and pathogen exposure. Interferon regulatory factors (IRFs) play critical roles in orchestrating innate immunity and inflammation in response to invading microbes and tissue damage, with ...
Hubing V +5 more
europepmc +2 more sources
The peculiar syrinx of Rhea americana (Greater Rhea, Palaeognathae)
Vertebrate Zoology, 2013 This work studied the skeletal and muscular syringeal anatomy of Greater Rhea (Rhea americana) throughout postnatal ontogeny, by using muscle staining and differential coloring of cartilage and bone techniques. Anatomical syrinx dissections on four adults (one female and three males) and eight unsexed chicks, were made.
Mariana Beatriz Julieta Picasso +1 more
openaire +4 more sources
FEBS Open Bio, 2021 Beta‐microseminoproteins (MSMBs) are small disulfide‐rich proteins that are conserved among vertebrates. These proteins exhibit diverse biological activities and were mainly reported to play a role in male fertility, immunity, and embryogenesis.
Franck Coste +9 more
doaj +1 more source
Waves of genomic hitchhikers shed light on the evolution of gamebirds (Aves: Galliformes) : research article [PDF]
, 2007 Background The phylogenetic tree of Galliformes (gamebirds, including megapodes, currassows, guinea fowl, New and Old World quails, chicken, pheasants, grouse, and turkeys) has been considerably remodeled over the last decades as new data and analytical ...
Kriegs, Jan Ole +6 more
core +1 more source
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 +2 more sources
Birds and hard ticks (Acari: Ixodidae), with discussions about hypotheses on tick evolution
FAVE Sección Ciencias Veterinarias, 2017 The relationship between birds (Aves) and hard ticks (Ixodidae) was analyzed for the 386 of 725 tick extant species whose larva, nymph and adults are known as well as their natural hosts.
GUGLIELMONE AA, NAVA S
doaj +1 more source
Flying ticks: anciently evolved associations that constitute a risk of infectious disease spread [PDF]
, 2015 Ticks are important vectors of emerging zoonotic diseases affecting human and animal health worldwide. Ticks are often found on wild birds, which have been long recognized as a potential risk factor for dissemination of ticks and tick-borne pathogens ...
José de la Fuente +3 more
core +2 more sources
A phylogeny of the tinamous (Aves: Palaeognathiformes) based on integumentary characters [PDF]
, 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
Evolution and development of the bird chondrocranium
Frontiers in Zoology, 2021 Background Birds exhibit an enormous diversity in adult skull shape (disparity), while their embryonic chondrocrania are considered to be conserved across species.
Evelyn Hüppi +2 more
doaj +1 more source