A5068517569- Animal Behavior and Reproduction
- Animal Vocal Communication and Behavior
- Avian ecology and behavior
- Marine animal studies overview
- Physiological and biochemical adaptations
- Bird parasitology and diseases
- Circadian rhythm and melatonin
- Impact of Light on Environment and Health
- Bat Biology and Ecology Studies
- Plant and animal studies
- Insect and Pesticide Research
- Antioxidant Activity and Oxidative Stress
- Neurobiology and Insect Physiology Research
- Fish Ecology and Management Studies
- High Altitude and Hypoxia
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Climate Change and Health Impacts
- Organ Transplantation Techniques and Outcomes
- Adipose Tissue and Metabolism
- Sexual Differentiation and Disorders
- Transplantation: Methods and Outcomes
- Infant Health and Development
- Mitochondrial Function and Pathology
- Advanced Aircraft Design and Technologies
- Animal Genetics and Reproduction
Max Planck Institute for Biological Intelligence
2023-2025
Max Planck Institute for Ornithology
2014-2024
Max Planck Institute for Intelligent Systems
2024
Mayo Clinic Hospital
2024
American Society of Law, Medicine and Ethics
2024
Max Planck Institute of Neurobiology
2023
Max Planck Society
2000-2019
Unlearned calls are produced by all birds whereas learned songs only found in three avian taxa, most notably songbirds. The neural basis for song learning and production is formed interconnected nuclei: the control system. In addition to song, zebra finches produce large numbers of soft, unlearned calls, among which "stack" uttered frequently. To determine unequivocally each member a group, we mounted miniature wireless microphones on finch. We find that group living paired males females...
Abstract Many organisms coordinate rhythmic motor actions with those of a partner to generate cooperative social behavior such as duet singing. The neural mechanisms that enable interindividual coordination are unknown. Here we investigate the basis vocal duetting by using an approach enables simultaneous recordings individual vocalizations and multiunit premotor activity in songbird pairs ranging freely their natural habitat. We find duet-initiating bird, onset partner’s contribution...
Abstract Globally increasing levels of artificial light at night (ALAN) are associated with shifting rhythms behaviour in many wild species. However, it is unclear whether changes behavioural timing paralleled by consistent shifts the molecular clock and its physiological pathways. Inconsistent between rhythms, different tissues systems, disrupt circadian system, which coordinates all major body functions. We therefore compared behavioural, transcriptional metabolomic responses captive great...
A bstract : Rigid schedules of long‐distance migrants could be among candidate traits for adaptive migratory syndromes. This prediction was tested on stonechats, passerines that differ widely in behavior and seasonal schedules. Stonechats Europe are short‐distance multiclutched, whereas African residents Siberian usually raise single broods. In captivity, all subspecies displayed endogenous cycles reproductive development molt. The differed time afforded to life cycle stages. Under conducive...
Pair compatibility affects the success of a pair; however, its causes and mechanisms are not fully understood. Vocal exchange may be very important for pair formation, coordinating activities, maintaining bond mate guarding. To investigate role vocal in formation maintenance, we explored whether new established pairs zebra finches differed their calling relationships. We used individualised backpack microphones to examine entire daily emission pairs, with parallel video recording...
Elite human and animal athletes must acquire the fuels necessary for extreme feats, but also contend with oxidative damage associated peak metabolic performance. Here, we show that a migratory bird fuel stores composed of more omega-6 polyunsaturated fats (PUFA) expended 11% less energy during long-duration (6 hr) flights no change in costs; however, this short-term savings came at long-term cost higher PUFA-fed birds. Given fatty acids are primary fuels, key signaling molecules, building...
ABSTRACT Female zebra finches ( Taeniopygia guttata ) are unable to sing because of the vestigial development forebrain song control areas such as RA (nucleus robustus archistriatalis), a premotor nucleus pathway. In male finches, is also involved in call‐based vocal communication addition control. Here, we monitored activity neurons during freely behaving females using miniaturized telemetric recording device combined with audio recording. Neurons region showed associated stack and tet...
Glucocorticoids (GCs) are metabolic hormones that promote catabolic processes, which release stored energy and support high demands such as during prolonged flights of migrating birds. Dietary antioxidants (e.g. anthocyanins) metabolism by quenching excess reactive oxygen species produced aerobic also activating specific pathways. For example, similar to GCs' function, anthocyanins the energy, although extent complementarity between GCs dietary is not well known. If complement functions,...
Normothermic Regional Perfusion, or NRP, is a method of donated organ reperfusion using cardiopulmonary bypass modified extracorporeal membrane oxygenation (ECMO) circuit after circulatory death while leaving organs in the dead donor's corpse. Despite its potential, several key ethical issues remain unaddressed by this technology.
Understanding energy metabolism in free-ranging animals is crucial for ecological studies. In birds, red blood cells (RBCs) offer a minimally invasive method to estimate metabolic rate (MR). this study with European starlings Sturnus vulgaris, we examined how RBC oxygen consumption relates use key tissues (brain, liver, heart, and pectoral muscle) versus the whole organism measured at basal levels. The muscle accounted 34%-42% of organismal MR, while heart despite their high mass-specific...
Gonadal hormone activities mediated by androgen and estrogen receptors, along with cell-autonomous mechanisms arising from the absence of sex-chromosome dosage compensation, are key factors in avian sexual development. In this study, we generate receptor (AR) knockout chickens (AR
Many species perform elaborate physical displays to court mates and compete with rivals, but the biomechanical mechanisms underlying such behavior are poorly understood. We address this issue by studying neuromuscular origins of display in a small tropical passerine bird, golden-collared manakin (Manacus vitellinus). Males females dancing around forest floor rapidly snapping their wings together above back. Using radio-telemetry, we collected electromyographic (EMG) recordings from three...
Abstract Migratory birds engage in 2 periods of endurance flight annually as they travel between summer breeding and overwintering grounds, such flights likely incur oxidative costs. These costs may differ fall spring migration, especially for females who must prepare egg laying spring. The objective this study a migratory bird was to test proposed hypotheses about how key components the female’s antioxidant system response training dietary supplementation. We hand raised female European...
Melatonin is a key hormone in the regulation of circadian rhythms vertebrates, including songbirds. Understanding diurnal melatonin fluctuations and being able to reverse or simulate natural levels are critical investigating influence on various behaviors such as singing birds. Here we give detailed overview plasma concentration throughout night zebra finch. As shown previous studies, confirm that "lights off" initiates production at situation. Notably, find return daytime early two hours...
Birds, like other vertebrates, rely on a robust antioxidant system to protect themselves against oxidative imbalance caused by energy-intensive activities such as flying. Such challenges may be especially acute for females during spring migration, they must pay the costs of flight while preparing reproduction; however, little previous work has examined how female migrants responds dietary antioxidants and regular We fed two diets European starlings, one supplemented with without, then flew...
Abstract Globally increasing levels of artificial light at night (ALAN) are associated with shifts in circadian rhythms behaviour many wild species. However, it is still unclear whether changes behavioural timing underlined by parallel the molecular clock, and such internal may differ between different tissues physiological pathways, which could highlight disruption. We tackled these questions a comprehensive study that integrated behavioural, gene expression metabolomic analyses. exposed...
Female zebra finches (Taeniopygia guttata) are unable to sing due the vestigial development of forebrain song control areas such as RA (nucleus robustus archistriatalis), a premotor nucleus pathway. In male is also involved in call-based vocal communication addition control. Here, we monitored activity neurons during freely behaving females using miniaturized telemetric recording device combined with audio recording. Neurons region showed associated stack and tet calls, two innate...
In a recent study, Thoral et al. (2024) explored the link between whole-organism resting metabolic rate (RMR) and mitochondrial respiration in red blood cells of wild great tits (Parus major). They captured winter to measure their night-time RMR with traditional respirometry, at thermoneutrality (20°C) for first 4 h, 8°C remaining h measurements. Immediately after measurements birds were blood-sampled states assessed 41°C high-resolution respirometry. 20°C (ROUTINE) did not show expected...