scholarly journals Behavioural and Physiological Changes in a Herd of Arabian Mares after the Separation of Individuals Differently Ranked within the Dominance Hierarchy

Animals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2694
Author(s):  
Anna Stachurska ◽  
Anna Wiśniewska ◽  
Witold Kędzierski ◽  
Monika Różańska-Boczula ◽  
Iwona Janczarek
Keyword(s):  
Locomotor Activity ◽  
Dominance Hierarchy ◽  
Rank Order ◽  
Cardiac Activity ◽  
Emotional Arousal ◽  
Physiological Changes ◽  
Main Experiment ◽  
The Social ◽  
Behavioural Test ◽  
Social Separation

Horses in a herd develop and maintain a dominance hierarchy between all individuals. There are many situations in riding facilities and studs in which horses have to be separated out of a group. The aim of the study was to determine the rate of behaviours, level of locomotor activity and cardiac activity variables in a herd of horses during a short social separation of individuals differently ranked in the dominance hierarchy. Twelve adult Arabian mares were involved. A behavioural test had been performed before the main experiment to determine the rank order of the mares in this social herd. Three tests were performed when a dominant, mixed and submissive three-member group of mares was separated for 10 min. The response of the remaining herd was determined by a rate of behaviours, time of locomotor activity and cardiac parameters. The results of the experiment reveal evident changes towards emotional arousal in the social herd elicited by a short separation of some conspecifics. The herd created by humans preserves the sensitivity to a temporary loss of its members. The response of the remaining herd does not depend strictly on the composition of the separated mares regarding their rank in the dominance hierarchy.

The Impact of Covid 19 on Pregnant Women and Child Health

2020 ◽  
Vol 11 (SPL1) ◽  
pp. 1367-1373
Author(s):  
Nikhil Sanjay Mujbaile ◽  
Smita Damke
Keyword(s):  
Social Issues ◽  
Middle Income ◽  
Web Based ◽  
Middle Income Countries ◽  
Low Middle Income Countries ◽  
The Social ◽  
Social Separation ◽  
The Impact ◽  
And Child Health ◽  
General Wellbeing

The Covid illness (COVID-19) pandemic has spread rapidly all through the world and has had a drawn-out impact. The Pandemic has done incredible damage to society and made genuine mental injury to numerous individuals. Mental emergencies frequently cause youngsters to deliver sentiments of relinquishment, despondency, insufficiency, and fatigue and even raise the danger of self-destruction. Youngsters with psychological instabilities are particularly powerless during the isolate and colonial removing period. Convenient and proper assurances are expected to forestall the event of mental and social issues. The rising advanced applications and wellbeing administrations, for example, telehealth, web-based media, versatile wellbeing, and far off intuitive online instruction can connect the social separation and backing mental and conduct wellbeing for youngsters. Because of the mental advancement qualities of youngsters, this investigation additionally outlines intercessions on the mental effect of the COVID-19 Pandemic. Further difficulties in Low Middle-Income Countries incorporate the failure to actualize successful general wellbeing estimates, for example, social separating, hand cleanliness, definitive distinguishing proof of contaminated individuals with self-disconnection and widespread utilization of covers The aberrant impacts of the Pandemic on youngster wellbeing are of extensive concern, including expanding neediness levels, upset tutoring, absence of admittance to the class taking care of plans, decreased admittance to wellbeing offices and breaks in inoculation and other kid wellbeing programs. Kept tutoring is critical for kids in Low Middle-Income Countries. Arrangement of safe situations is mainly testing in packed asset obliged schools. 

scholarly journals Dynamical system of the growth of COVID-19 with controller

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Rabha W. Ibrahim ◽  
Dania Altulea ◽  
Rafida M. Elobaid
Keyword(s):  
Dynamical System ◽  
Optimal Control ◽  
Growth Rate ◽  
Dynamic System ◽  
Unique Solution ◽  
Population Dynamic ◽  
Integral Control ◽  
The Social ◽  
Social Separation ◽  
Strong Control

AbstractRecently, various studied were presented to describe the population dynamic of covid-19. In this effort, we aim to introduce a different vitalization of the growth by using a controller term. Our method is based on the concept of conformable calculus, which involves this term. We investigate a system of coupled differential equations, which contains the dynamics of the diffusion among infected and asymptomatic characters. Strong control is considered due to the social separation. The result is consequently associated with a macroscopic law for the population. This dynamic system is useful to recognize the behavior of the growth rate of the infection and to confirm if its control is correctly functioning. A unique solution is studied under self-mapping properties. The periodicity of the solution is examined by using integral control and the optimal control is discussed in the sequel.

scholarly journals Developmental Neurotoxicity of Environmentally Relevant Pharmaceuticals and Mixtures Thereof in a Zebrafish Embryo Behavioural Test

2021 ◽  
Vol 18 (13) ◽  
pp. 6717
Author(s):  
Alessandro Atzei ◽  
Ingrid Jense ◽  
Edwin P. Zwart ◽  
Jessica Legradi ◽  
Bastiaan J. Venhuis ◽  
...  
Keyword(s):  
Locomotor Activity ◽  
Animal Studies ◽  
Zebrafish Embryo ◽  
Cumulative Effect ◽  
Developmental Neurotoxicity ◽  
Limited Information ◽  
Behavioural Phenotype ◽  
Chemically Induced ◽  
Behavioural Test

Humans are exposed daily to complex mixtures of chemical substances via food intake, inhalation, and dermal contact. Developmental neurotoxicity is an understudied area and entails one of the most complex areas in toxicology. Animal studies for developmental neurotoxicity (DNT) are hardly performed in the context of regular hazard studies, as they are costly and time consuming and provide only limited information as to human relevance. There is a need for a combination of in vitro and in silico tests for the assessment of chemically induced DNT in humans. The zebrafish (Danio rerio) embryo (ZFE) provides a powerful model to study DNT because it shows fast neurodevelopment with a large resemblance to the higher vertebrate, including the human system. One of the suitable readouts for DNT testing in the zebrafish is neurobehaviour (stimulus-provoked locomotion) since this provides integrated information on the functionality and status of the entire nervous system of the embryo. In the current study, environmentally relevant pharmaceuticals and their mixtures were investigated using the zebrafish light-dark transition test. Zebrafish embryos were exposed to three neuroactive compounds of concern, carbamazepine (CBZ), fluoxetine (FLX), and venlafaxine (VNX), as well as their main metabolites, carbamazepine 10,11-epoxide (CBZ 10,11E), norfluoxetine (norFLX), and desvenlafaxine (desVNX). All the studied compounds, except CBZ 10,11E, dose-dependently inhibited zebrafish locomotor activity, providing a distinct behavioural phenotype. Mixture experiments with these pharmaceuticals identified that dose addition was confirmed for all the studied binary mixtures (CBZ-FLX, CBZ-VNX, and VNX-FLX), thereby supporting the zebrafish embryo as a model for studying the cumulative effect of chemical mixtures in DNT. This study shows that pharmaceuticals and a mixture thereof affect locomotor activity in zebrafish. The test is directly applicable in environmental risk assessment; however, further studies are required to assess the relevance of these findings for developmental neurotoxicity in humans.

Beaumont's Contribution to Gastric Psychophysiology: A Reappraisal

1988 ◽  
Vol 33 (7) ◽  
pp. 650-653 ◽  
Author(s):  
François M. Mai
Keyword(s):  
Gastric Emptying ◽  
Delayed Gastric Emptying ◽  
Bile Reflux ◽  
Emotional Arousal ◽  
Gastric Fistula ◽  
Physiological Changes ◽  
Digestive Process ◽  
Psychophysiological Research ◽  
Series Of Experiments

William Beaumont's monograph on the physiology of digestion which was first published in 1833, has become a classic in its field. In a series of experiments over a 10 year period on Alexis St. Martin, a 19 year old Canadian voyageur with a traumatic gastric fistula, Beaumont was the first to describe many important aspects of the digestive process. In two of the 238 experiments Beaumont noted gastric physiological changes induced by emotional arousal, these being bile reflux and delayed gastric emptying. Elsewhere in the book, but not in experimental context, Beaumont referred to non-specific changes in coloration and secretion of the mucous membrane induced by emotion. Modern gastric psychophysiological research has shown that emotional arousal increases, and withdrawal decreases, gastric acid secretion. It has also been shown conclusively that emotion can cause a reflux of bile into the stomach and it may delay gastric emptying. Although the main thrust of Beaumont's work was physiological, he must be credited with being the first investigator to draw attention to the role of emotional arousal in the digestive process.

scholarly journals Most important types of cattle behavior

2008 ◽  
Vol 62 (3-4) ◽  
pp. 133-142 ◽  
Author(s):  
Mirjana Joksimovic-Todorovic ◽  
Slavca Hristov ◽  
Vesna Davidovic ◽  
Renata Relic ◽  
Branislav Stankovic
Keyword(s):  
Feeding Behavior ◽  
Health Condition ◽  
Physiological Changes ◽  
Natural Behavior ◽  
The Social ◽  
Hereditary Character ◽  
External Stimuli ◽  
Natural Characteristics ◽  
Production Characteristics

Behavior of cattle is a simple and easily established indicator of their health condition, production characteristics and welfare, showing whether and how the animal has adapted to the maintenance conditions. Essentially, all forms of cattle behavior are accompanied by certain physiological changes in the organism, and the basic moving forces of behavior are congenital. The moving forces of behavior of cattle are narrowed down to a certain number of biological needs (the need for food, water, sexual and other biological needs) and congenital urges and instincts, such as the combative and maternal instincts. Cattle are grazing animals and they cannot exhibit all their congenital natural activities of behavior under intensive maintenance conditions. Different internal and external stimuli influence the types of behavior of cattle, changing the motivational activities of their organism. In the course of domestication, certain forms of behavior of cattle have sustained changes, some have adapted to the new conditions, and new ones have appeared as well. The social, reproductive, maternal, and feeding behavior of cattle in closed maintenance conditions has not changed fundamentally, but the model of its manifesting has changed. Furthermore, certain disorders in the behavior of cattle also appear as a consequence of the maintenance conditions, and they can also be of hereditary character. In order to promote welfare, cattle should be enabled to exhibit their natural behavior, but they should also be provided with an environment that has natural characteristics.

scholarly journals Threat induces changes in cardiac activity and metabolism negatively impacting survival in flies

2020 ◽  
Author(s):  
Natalia Barrios ◽  
Matheus Farias ◽  
Marta A Moita
Keyword(s):  
Internal State ◽  
Brain Activity ◽  
Dynamic Environment ◽  
Cardiac Activity ◽  
Fruit Fly ◽  
Physiological Changes ◽  
Neural Basis ◽  
Cardiac Responses ◽  
Cardiac Deceleration ◽  
Defensive Behaviours

AbstractAdjusting to a dynamic environment involves fast changes in the body’s internal state, characterized by coordinated alterations in brain activity, physiological and motor responses. Threat-induced defensive states are a classic example of coordinated adjustment of bodily responses, being cardiac regulation one of the best characterized in vertebrates. A great deal is known regarding the neural basis of invertebrate defensive behaviours, mainly in Drosophila melanogaster. However, whether physiological changes accompany these remains unknown. Here, we set out to describe the internal bodily state of fruit flies upon an inescapable threat and found cardiac acceleration during running and deceleration during freezing. In addition, we found that freezing leads to increased cardiac pumping from the abdomen towards the head-thorax, suggesting mobilization of energy resources. Concordantly, threat-triggered freezing reduces sugar levels in the hemolymph and renders flies less resistant to starvation. The cardiac responses observed during freezing were absent during spontaneous immobility, underscoring the active nature of freezing response. Finally, we show that baseline cardiac activity predicts the amount of freezing upon threat. This work reveals a remarkable similarity with the cardiac responses of vertebrates, suggesting an evolutionarily convergent defensive state in flies. Our findings are at odds with the widespread view that cardiac deceleration while freezing has first evolved in vertebrates and that it is energy sparing. Investigating the physiological changes coupled to defensive behaviours in the fruit fly has revealed that freezing is costly, yet accompanied by cardiac deceleration, and points to heart activity as a key modulator of defensive behaviours.

Charismatic leadership: a group-analytic perspective

2020 ◽  
pp. 053331642097991
Author(s):  
Harold Behr
Keyword(s):  
Personal Narratives ◽  
Emotional Arousal ◽  
Charismatic Leadership ◽  
Social Climate ◽  
Therapeutic Implications ◽  
The Social

This article investigates the concepts of charisma and charismatic leadership in psychotherapeutic, religious and political settings. The author explores the associations of charisma with power and emotional arousal and differentiates between charismatic leadership exercised with benign and harmful intent. Personal narratives of charismatic figures are drawn on to illustrate the psychological underpinnings of charisma as well as the social climate in which charismatic leadership flourishes. The author argues that charismatic leaders make use of techniques such as dramatization, paradox and the simultaneous instillation of hope and fear in order to foster bonds of dependence. The therapeutic and counter-therapeutic implications of these techniques are examined.

Social Organisation and Warren Use of the Burrowing Bettong, Bettongia lesueur (Macropodoidea : Potoroidae)

1997 ◽  
Vol 24 (2) ◽  
pp. 143 ◽  
Author(s):  
Ute Sander ◽  
Jeff Short ◽  
Bruce Turner
Keyword(s):  
Dominance Hierarchy ◽  
Social Groups ◽  
Young Male ◽  
Social Organisation ◽  
Agonistic Interactions ◽  
Weak Dominance ◽  
Shark Bay ◽  
Day Range ◽  
The Social ◽  
Polygynous Mating System

This study describes the use of warrens and aspects of the social organisation of a population of the burrowing bettong, an endangered potoroid. Observations were made on 14 animals, maintained in a 4-ha enclosure of natural vegetation at Shark Bay, Western Australia. The population divided into three social groups, each of one male and one to many females. Individual bettongs used 1–10 warrens over a period of five months. Males changed warrens more often than females. Some females regularly shared warrens with other females. Many of these associations appeared to be mothers with their daughter or daughters. Sharing of warrens occurred regularly until the daughters were about 10 months old and occasionally after that. Day ranges of males were larger than those of females, exclusive of other males, and overlapped those of 1–6 females. Males shared warrens with the females within their day range. At night bettongs were not constrained to their day range and made use of the whole enclosure. Equal numbers of agonistic interactions between and within day-range groups, as well as the absence of feeding associations, indicated that bettongs operated independently of their day-range groups at night while feeding. Bettongs formed a weak dominance hierarchy with the oldest female on top and a young male at the bottom. Male–male interactions tended to be more aggressive than male–female interactions. Males were involved in significantly more agonistic interactions, particularly chases, than were females; chases usually entailed chasing another male away from a female. Use of space and social behaviour suggested a polygynous mating system.

Behaviour of the Bilby, Macrotis lagotis (Reid), (Marsupialia : Thylacomyidae) in Captivity

1983 ◽  
Vol 10 (1) ◽  
pp. 77 ◽  
Author(s):  
CN Johnson ◽  
KA Johnson
Keyword(s):  
Social Structure ◽  
Feeding Behaviour ◽  
Dominance Hierarchy ◽  
Dominant Male ◽  
Alpha Male ◽  
The Social ◽  
In Captivity ◽  
Below Ground ◽  
Activity Cycles ◽  
Central Australia

The behaviour was observed, in captivity, of the bilby Macrotis lagotis, a fossorial bandicoot of central Australia. Most of the observations were made at night, but some were of below-ground behaviour during the daylight hours. Bilbies proved to be relatively passive in comparison with other bandicoots, and a rigid dominance hierarchy amongst males was maintained without destructive fighting. Dominant males chased subordinate males out of and away from burrows and the alpha male maintained priority of access to all the well used burrows in the enclosure. Males scent-marked around burrows; the dominant male usually marked over scents left by other bilbies. Males shared burrows freely with females, and copulation appears to take place down burrows. Information is also given on female-female and mother-young behaviour, and some suggestions are made concerning the social structure of wild bilbies. Activity cycles, feeding behaviour, etc. are described.

scholarly journals Loneliness, social dislocation and invisibility experienced by older men who are single or living alone: accounting for differences across sexual identity and social context

2020 ◽  
pp. 1-23
Author(s):  
Paul Willis ◽  
Alex Vickery ◽  
Tricia Jessiman
Keyword(s):  
Sexual Identity ◽  
Social Participation ◽  
Older Men ◽  
Living Alone ◽  
Social Connections ◽  
Social Environments ◽  
Structured Interviews ◽  
Social Settings ◽  
The Social ◽  
Social Separation

Abstract Across literature on loneliness and ageing, little attention is given to the intersection of ageing, sexuality and masculinities, and how this shapes the social connections of older men. We report findings from a qualitative study of older men's experiences of loneliness and social participation, focusing on perspectives from two groups who are single and/or living alone: men identifying as (a) heterosexual and (b) gay (not bisexual). We present findings generated from semi-structured interviews with 72 men residing in England (65–95 years). We discuss three prominent themes: (a) loneliness, loss and social dislocation; (b) diverging life-events that trigger loneliness; and (c) variations in visibility and exclusion across social settings. Embedded within men's descriptions of loneliness is a running theme of social dislocation that speaks to a wider sense of social separation and estrangement. Unique to gay men's accounts are the ways in which experiences of loneliness and social isolation are compounded by living in heteronormative social environments and their encounters with ageism in gay social settings. Older men's accounts convey anxieties about visibility and anticipated exclusion across social settings shared with other men that vary according to sexual identity and context. We discuss how sexuality and being single and/or living alone impact on older men's social participation as we seek to move beyond a heterocentric understanding of loneliness.

Sign in / Sign up

Export Citation Format

Share Document