A5040611886- Animal Behavior and Reproduction
- Animal Vocal Communication and Behavior
- Evolutionary Psychology and Human Behavior
- Animal Behavior and Welfare Studies
- Wildlife Ecology and Conservation
- Primate Behavior and Ecology
- Hormonal and reproductive studies
- Marine animal studies overview
- Neuroendocrine regulation and behavior
- Birth, Development, and Health
- Plant and animal studies
- Stress Responses and Cortisol
- Genetic and phenotypic traits in livestock
- Reproductive Physiology in Livestock
- Adipose Tissue and Metabolism
- Noise Effects and Management
- Effects and risks of endocrine disrupting chemicals
- Evolutionary Game Theory and Cooperation
- Pharmacological Effects and Assays
- Demographic Trends and Gender Preferences
- Reproductive System and Pregnancy
- Air Quality and Health Impacts
- Climate Change and Health Impacts
- Iron Metabolism and Disorders
- Avian ecology and behavior
Bar-Ilan University
2016-2025
Goodman (Japan)
2022
University of Calgary
2010-2014
Tel Aviv University
2002-2011
Eindhoven University of Technology
2001-2002
Institute of Nature Conservation
2002
Hospital for Sick Children
1996
In communal mammals the levels of social interaction among group members vary considerably. recent years, biologists have realized that within-group interactions may affect survival members. Several studies demonstrated integration adult females is positively associated with infant survival, and female longevity affected by strength stability individual bonds. Our aim was to determine factors influence in mammals.As a model system, we studied rock hyrax (Procavia capensis), plural breeder...
Potential mechanistic mediators of Darwinian fitness, such as stress hormones or sex hormones, have been the focus many studies. An inverse relationship between fitness and hormone concentrations has widely assumed, although empirical evidence is scarce. Feathers gradually accumulate during their growth provide a novel way to measure integrated over time. Using liquid chromatography–tandem mass spectrometry, we measured testosterone, corticosterone cortisol in feathers house sparrows (...
Abstract Inter‐individual differences are necessary for selection to act, while plasticity (intra‐individual variation) may buffer against selection. Sleep is a critical self‐maintenance behaviour but, unlike most behaviours, the causes and consequences of its inter‐ intra‐individual variation in wild animals poorly understood, particularly neonates where sleep plays key role development. We have shown previously that free‐ranging neonate fallow deer ( Dama dama ) differ during first few...
Summary Human‐caused harassment and mortality (e.g. hunting) affects many aspects of wildlife population dynamics social structure. Little is known, however, about the physiological effects hunting, which might provide valuable insights into mechanisms by respond to human‐caused mortality. To investigate consequences we measured stress reproductive hormones in hair, reflect endocrine activity during hair growth. Applying this novel approach, compared steroid hormone levels wolves ( Canis...
Blood samples from wild mammals and birds are often limited in volume, allowing researchers to quantify only one or two steroids a single sample by immunoassays. In addition, wildlife serum plasma lipemic, necessitating stringent preparation. Here, we validated preparation for simultaneous liquid chromatography – tandem mass spectrometry (LC-MS/MS) quantitation of cortisol, corticosterone, 11-deoxycortisol, dehydroepiandrosterone (DHEA), 17β-estradiol, progesterone, 17α-hydroxyprogesterone...
Abstract Hair analysis is emerging as a popular tool to examine stress and reproduction hormone levels in wild mammals. The reliability of this approach, however, depends on an understanding steroid incorporation into hair well appropriate validations. We reviewed studies that have examined hormones wildlife with the goal summarizing analytical, physiological, biological evidence approach meaningful. Accordingly, we differentiated among validations aimed at evaluating analytical method...
While chronic early stress increases child susceptibility to psychopathology, risk and resilience trajectories are shaped by maternal social influences whose role requires much further research in longitudinal studies. We examined the transmission of assessing paths leading from war-exposure symptoms as mediated 3 sources influence; physiology, synchronous parenting, psychiatric disorder. Mothers children living a zone continuous war were assessed childhood (1.5-5 years) current study...
Abstract Mammalian pregnancy evolved in the therian stem lineage, that is, before common ancestor of marsupials and eutherian (placental) mammals. Ancestral likely involved a brief phase attachment between fetal maternal tissues followed by parturition—similar to situation most including opossum. In all eutherians, however, embryo is implantation, allowing for stable fetal–maternal interface an extended gestation. Embryo induces reaction uterus homologous inflammatory response. Here, we...
The causes and consequences of being in a particular dominance position have been illuminated various animal species, new methods to assess relationships describe the structure hierarchies developed recent years. Most research has focused on same-sex relationships, however, so that intersexual including both sexes remained much less studied. In particular, different continue be employed rank males females along hierarchy, sex biases are still widely regarded as simple byproducts sexual size...
Abstract Rhythmic stability (nonrandom temporal structure) is required for many neural and physiological functions, whereas rhythmic irregularities can indicate genetic or developmental deficiencies. Therefore, courtship contest signals are widespread in nature as honest advertisement displays. Examination of bird songs revealed the pervasiveness categorical patterns that be described small integer ratios between sequential inter‐call intervals. As similar profiles prevalent human music, it...
Abstract Behavioural variation at the individual level has been shown to play an important role in animal ecology and evolution. Whereas most studies have focused on subadult or adult subjects, neonates relatively neglected, despite showing that can exhibit consistent inter‐individual differences during early developmental stages. Steroid hormones, including glucocorticoids (e.g. cortisol) androgens testosterone), a crucial foetal development maturation could therefore drive neonate...
The goal of vocal communication is the efficient delivery signals to a target audience. Long and complex vocalizations are especially challenging because they subject environmental interference may incur significant costs for signaler. One various ways increasing efficiency signal enhancement communicational efforts only when potential audience perceived nearby in an attempt maximize benefit over cost signaling (audience effect). Another way subsequently events that intensify individual...
Several studies have shown inconsistent associations between anxiety during pregnancy and adverse outcome. This inconsistency may be due to lack of controlling for the timing type maternal anxiety. We aimed isolate a specific - propensity, which is not directly related pregnancy, evaluate its association with conducted prospective observational study 512 pregnant women, followed delivery. The trait scale State-Trait Anxiety Inventories was used in order detect propensity towards (defined as...