Results 71 to 80 of about 753 (160)

Characterization of Chicken Tumor Necrosis Factor-α, a Long Missed Cytokine in Birds

Frontiers in Immunology, 2018
Tumor necrosis factor-α (TNF-α) is a pleiotropic cytokine playing critical roles in host defense and acute and chronic inflammation. It has been described in fish, amphibians, and mammals but was considered to be absent in the avian genomes.
Franziska Rohde, Benjamin Schusser, Tomáš Hron, Helena Farkašová, Jiří Plachý, Sonja Härtle, Jiří Hejnar, Daniel Elleder, Bernd Kaspers   +8 more
doaj   +1 more source

Avian Lifespan Network Reveals Shared Mechanisms and New Key Players in Animal Longevity

Aging Cell, Volume 24, Issue 9, September 2025.
In this work, we found that birds with similar lifespans exhibit convergent evolution in specific genes, suggesting that shared evolutionary pressures shape the genetic basis of lifespan similarity across species. By investigating protein–protein interactions across genes evolving convergently in long‐ and short‐lived species, we identified a network ...
Mirko Martini, Giovanni Piccinini, Liliana Milani, Mariangela Iannello   +3 more
wiley   +1 more source

Figure 3 in Comparative ossification and development of the skull in palaeognathous birds (Aves: Palaeognathae)

, 2009
Figure 3. Evolution of embryonic and adult palatal morphology of the ratites (phylogeny sensu Bledsoe, 1988, palaeognathous characters 1–3 sensu Zusi & Livezey, 2006).
Maxwell, Erin E.
core   +1 more source

Expression patterns of melanin‐related genes are linked to crypsis and conspicuousness in a pumpkin toadlet

Molecular Ecology, Volume 34, Issue 15, August 2025.
Abstract Colour signals play pivotal roles in different communication systems, and the evolution of these characters has been associated with behavioural ecology, integumentary production processes and perceptual mechanisms of the species involved. Here, we present the first insight into the molecular and histological basis of skin colour polymorphism ...
Juliane P. C. Monteiro, Heike Pröhl, Mariana L. Lyra, Andrés E. Brunetti, Eli C. de Nardin, Thais H. Condez, Célio F. B. Haddad, Ariel Rodríguez   +7 more
wiley   +1 more source

A focus on females can improve science and conservation

Ibis, Volume 167, Issue 3, Page 819-827, July 2025.
As a field, ecology has historically misunderstood or overlooked female organisms, or assumed that they are ‘similar enough’ to males. The typical unit of study for ecology research stops at the species level, but that can be too coarse and can obscure important intraspecific differences.
Joanna X. Wu, Martha A. Harbison, Stephanie Beilke, Purbita Saha, Brooke L. Bateman   +4 more
wiley   +1 more source

Novel Quantification of Eggshell Surfaces in Dromaius novaehollandiae With Implications for the Fossil Eggshells of Oviraptorosauria (Dinosauria)

Ecology and Evolution, Volume 15, Issue 5, May 2025.
We have developed a new, quantitative method of assessing the variation on paleosurfaces. This method uses functions from the molaR package of R, including new functions detailed here. This paper tests the functions on the eggshell surfaces of extant emu (Dromaius novaehollandiae) and fossil oviraptorosaur eggs of the ootaxon Macroelongatoolithus ...
Joshua Hedge, Emerald Bender, Lindsay E. Zanno   +2 more
wiley   +1 more source

Figure 1. Palaeognathae phylogenies published 2007–2010. A in New morphological evidence supports congruent phylogenies and Gondwana vicariance for palaeognathous birds

, 2011
Figure 1. Palaeognathae phylogenies published 2007–2010. A, nuclear genomic (Harshman et al., 2008); B, mitochondrial genomic (Phillips et al., 2010); C, mitochondrial genomic (Baker & Pereira, 2009); D, morphological (Bourdon et al., 2009); E ...
Johnston, Peter
core   +1 more source

Cytoplasmic Shift of Interferon Regulatory Factors Co‐Evolved With Jawed Vertebrate Innate Immunity

Journal of Medical Virology, Volume 97, Issue 2, February 2025.
ABSTRACT 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 ...
Vanessa Hubing, Avery Marquis, Chanasei Ziemann, Hideaki Moriyama, Etsuko N. Moriyama, Luwen Zhang   +5 more
wiley   +1 more source

The Lithornithiformes (Aves) from the early Eocene London Clay of Walton‐on‐the‐Naze (Essex, UK)

Papers in Palaeontology, Volume 11, Issue 1, January/February 2025.
Abstract We describe multiple partial skeletons and isolated bones of the palaeognathous Lithornithiformes from the early Eocene London Clay of Walton‐on‐the‐Naze (Essex, UK). The well‐preserved specimens are assigned to at least four species of the taxa Lithornis and Pseudocrypturus. Two species of Lithornis are identified as L. nasi and L.
Gerald Mayr, Andrew C. Kitchener
wiley   +1 more source

Contrasting morphological evidence for the presence of taste buds in Dromaius novaehollandiae and Struthio camelus (Palaeognathae, Aves) [PDF]

Zoomorphology, 2015
This study, facilitated by the use of immunohistochemistry, indicated the presence of taste buds in Dromaius novaehollandiae but not in Struthio camelus. Seen at the light microscope level, the taste buds consisted of follicular cells and receptor cells.
Crole, Martina Rachel, Soley, John Thomson   +1 more
openaire   +2 more sources