Results 61 to 70 of about 19,485 (215)
Gene duplication and fragmentation in the zebra finch major histocompatibility complex
BMC Biology, 2010 Background Due to its high polymorphism and importance for disease resistance, the major histocompatibility complex (MHC) has been an important focus of many vertebrate genome projects. Avian MHC organization is of particular interest because the chicken
Burt David W +10 more
doaj +1 more source
Determinants of the efficacy of natural selection on coding and noncoding variability in two passerine species [PDF]
, 2017 Population genetic theory predicts that selection should be more effective when the effective population size (Ne) is larger, and that the efficacy of selection should correlate positively with recombination rate.
Allendorf +137 more
core +2 more sources
Classifying avian drinking behaviour: ecological insights and implications in a changing world
Biological Reviews, EarlyView.ABSTRACT Water is a fundamental currency of life, and its availability significantly influences animal behaviour, physiology and distributions. However, our knowledge around the dependence on water for drinking and the direct and indirect mechanisms driving related behaviours remains partial in the context of changing climates. Here, we review patterns
Shannon R. Conradie, Marc T. Freeman
wiley +1 more source
Nestling diet, secondary sexual traits and fitness in the zebra finch [PDF]
, 1999 We examined the effect of nestling diet quality on a suite of physiological, morphological and life-history traits in adult male zebra finches,Taeniopygia guttata.
Arednt J. D. +5 more
core +2 more sources
Neuroprotection, EarlyView.Abstract Aim Aromatase is the key enzyme in the biosynthesis of 17β‐estradiol, the most potent estrogen, which has pleiotropic neuroprotective properties. Aromatase levels increase in the brain after stroke, and its gene variants increase susceptibility to stroke. This study aims to determine whether aromatase overexpression improves stroke outcome and
Lindsay Gallagher +8 more
wiley +1 more source
Zoo Biology, EarlyView.A behavioral study of the nocturnal activity budget and rhythmicity reveals the relationship between lying cycle (LC) duration and time spent in the REM‐sleep posture (“lying – head down”, LHD) in zoo‐housed Lowland tapirs (Tapirus terrestris) and Malayan tapirs (Tapirus indicus). ABSTRACT To ensure and optimize husbandry conditions, zoo management and
Melina Kurzawe +5 more
wiley +1 more source
The relationship of telomere length to baseline corticosterone levels in nestlings of an altricial passerine bird in natural populations [PDF]
, 2015 Indexación: Web of Science; Scopus.Background: Environmental stressors increase the secretion of glucocorticoids that in turn can shorten telomeres via oxidative damage.
Guerrero, C.J. +4 more
core +6 more sources
Zoo Biology, EarlyView.Housing quality affects male mouse attractiveness to females ABSTRACT Females generally prefer mates with traits indicating low stress (e.g., large size; good health). In captivity, stress from suboptimal housing might therefore reduce male attractiveness.
Prathipa Anandarajan +2 more
wiley +1 more source
Disruption of FEM1C-W gene in zebra finch: evolutionary insights on avian ZW genes [PDF]
, 2009 Sex chromosome genes control sex determination and differentiation, but the mechanisms of sex determination in birds are unknown. In this study, we analyzed the gene FEM1C which is highly conserved from Caenorhabditis elegans to higher vertebrates and ...
Arthur P. Arnold +2 more
core +1 more source
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Heatwaves are becoming increasingly frequent across the Mediterranean and pose critical challenges for small passerines, yet the physiological and morphological limits to their resilience remain poorly understood.
Erick González‐Medina +6 more
wiley +1 more source