Results 71 to 80 of about 3,636 (171)

Adaptation to harshness is fundamentally different from the adaptive stress response: Results from a 20‐year‐long case study in African striped mice

Journal of Zoology, EarlyView.
Animals in harsh environments rely on specialised adaptations. Two decades of field research on African striped mice (Rhabdomys pumilio) in the Succulent Karoo semi‐desert reveal a distinct ‘harshness response’—marked by reduced metabolism and glucocorticoid levels—that differs fundamentally from the classic stress response.
C. Schradin, N. Pillay, R. Rimbach
wiley   +1 more source

Influence of environmental enrichment on circulating white blood cell counts and behavior of female turkeys

Poultry Science, 2021
: Under commercial conditions turkeys are housed in large groups in poorly structured environments. This leads to stress and subsequently to pecking and cannibalism. Environmental enrichment is suggested to reduce stress and feather pecking, thus leading
R. Lindenwald, H.-J. Schuberth, B. Spindler, S. Rautenschlein   +3 more
doaj   +1 more source

Welfare assessment of turkeys (Meleagris gallopavo gallopavo) on farm

EFSA Journal, Volume 24, Issue 2, February 2026.
Abstract This Scientific Opinion assesses the welfare of turkeys of all ages (Meleagris gallopavo gallopavo) on farm in relation to the type and condition of the litter, type and availability of enrichment (including covered veranda and outdoor range), space allowance, concentrations of ammonia and carbon dioxide, effective environmental temperature ...
EFSA Panel Animal Health and Animal Welfare (AHAW), Søren Saxmose Nielsen, Julio Alvarez, Anette Boklund, Sabine Dippel, Fernanda Dorea, Jordi Figuerola, Mette S. Herskin, Virginie Michel, Miguel Angel Miranda Chueca, Eleonora Nannoni, Romolo Nonno, | Karl Stahl, Jutta Berk, Joanna Marchewka, Nienke van Staaveren, Oana Maria Balmos, Chiara Fabris, Olaf Mosbach‐Schulz, Yves Van der Stede, Marika Vitali, Cristina Rojo Gimeno, Antonio Velarde, Anja Brinch Riber   +23 more
wiley   +1 more source

Immunological and Physiological Differences Between Layer- and Broiler Chickens after Concurrent Intratracheal Administration of Lipopolysaccharide and Human Serum Albumin [PDF]

, 2010
Layers and broilers were concurrently intratracheally challenged with 0.5 mg Lipopolysaccharide (LPS) and 0.1 mg Human Serum Albumin (HuSA) at 3 weeks of age.
Freke, P., Koopmanschap, R.E., Lammers, A., Parmentier, H.K., Vries Reilingh, G., de   +4 more
core   +1 more source

Migratory Eurasian blackbirds have longer telomere length but similar mitochondrial density than resident conspecifics

Journal of Avian Biology, Volume 2026, Issue 1, January 2026.
Telomeres are regarded as key markers of cellular ageing and physiological state. Oxidative stress, which can accelerate telomere shortening, is thought to increase during energetically demanding processes such as bird migration. However, their study in the context of migratory behaviour is limited.
Pablo Salmón, Sophie Ellermann, Natalie Wellbrock, Roberto Carlos Frias‐Soler, Franz Bairlein, Miriam Liedvogel   +5 more
wiley   +1 more source

Energetic and oxidative costs of microfilarial infection: evidence for fitness trade‐offs in male village weavers of the Amurum Forest Reserve

Wildlife Biology, Volume 2026, Issue 1, January 2026.
Microfilariae contribute to a higher energetic demand that could lead to oxidative damage and reduce hosts' fitness. Yet reports about the energy status and oxidative stress‐defense mechanisms of infected wild birds are rarely documented. We investigated the relationship between microfilariae and the energy status and oxidative damage‐defense ...
Felix A. Andong, Olufemi Olasoji, Ezekiel S. Mayowa, Praise O. Nwanozie, Emmanuel E. Osayi, Vincent C. Ejere, Abdifatah Ahmed A. Afyare   +6 more
wiley   +1 more source

A narrative review of the impact of anthropogenic light and noise on owls

Ibis, Volume 168, Issue 1, Page 5-24, January 2026.
Today, owls are exposed to increasingly brightly lit nights and noisy environments because of human activities. To understand the impacts of artificial light at night (ALAN) and anthropogenic noise we performed an evidence synthesis. We searched four literature databases and Google Scholar and we collected 39 relevant articles (1945–2024) providing 125
Romain Sordello, Aurelie Coulon, Yorick Reyjol   +2 more
wiley   +1 more source

Effects of Endotoxin and Psychological Stress on Redox Physiology, Immunity and Feather Corticosterone in Greenfinches. [PDF]

PLoS One, 2013
Assessment of costs accompanying activation of immune system and related neuroendocrine pathways is essential for understanding the selective forces operating on these systems. Here we attempted to detect such costs in terms of disruption to redox balance and interference between different immune system components in captive wild-caught greenfinches ...
Meitern R, Sild E, Lind MA, Männiste M, Sepp T, Karu U, Hõrak P.   +6 more
europepmc   +5 more sources

Development of the Innate Immune Response in NestlingTree Swallows (Tachycineta bicolor) [PDF]

, 2009
The innate immune system provides an immediate, short term, first line of defense from pathogens; its appearance early in development in vertebrates is evidence of its critical importance.
Stambaugh, T.R.
core   +1 more source

Condition-dependence, pleiotropy and the handicap principle of sexual selection in melanin-based colouration. [PDF]

, 2015
The signalling function of melanin-based colouration is debated. Sexual selection theory states that ornaments should be costly to produce, maintain, wear or display to signal quality honestly to potential mates or competitors.
Roulin, A.
core   +1 more source