Plasticity in adult development: experience with young males enhances mating competence in adult male cowbirds, Molothrus ater

Behaviour ◽  
2002 ◽  
Vol 139 (6) ◽  
pp. 713-728 ◽  
Author(s):  
David White ◽  
Andrew P.King ◽  
Meredith West
Keyword(s):  
Social Environment ◽  
Adult Development ◽  
Adult Male ◽  
Adult Males ◽  
Young Males ◽  
The Social ◽  
Mating Opportunities ◽  
Song Production ◽  
Juvenile Males

AbstractThe social environment can play an important role in organizing organisms' behavioural development. We studied the effect on adult male cowbirds' communication and mating-related behaviour of being housed in social groups with juvenile males. In two large outdoor aviaries, we housed adult males, juvenile females and adult females either with or without juvenile males. Conditions remained intact from September 1999 through the first half of the breeding season in May 2000. We observed them throughout this time, documenting singing interactions, patterns of affiliation, and song production. We then brought the two groups of adult males together by rotating individuals from the groups into a mating competency tournament, allowing the males to compete with each other for mating opportunities with a new group of females. Throughout the study prior to the mating competency test, there were few differences among adult males in the two conditions as measured by amount and use of song, the quality of their songs, or number of copulations they received. In the mating competency tournament however, significant differences among males in the two conditions emerged. Compared with adult males that had been housed without juvenile males, adult males that had formerly been housed with juvenile males were more successful in the mating competition as measured by: success in getting copulations, number of copulations received, and latency to get copulations. They also engaged in more male-male singing interactions. These results provide evidence to suggest that development of mating competency is malleable throughout life in response to the social environment that individuals experience.

Bonobo baby dominance: Did female defense of offspring lead to reduced male aggression?

2018 ◽  
Author(s):  
Kara Walker ◽  
Brian Hare
Keyword(s):  
Adult Male ◽  
Social System ◽  
Dominant Species ◽  
Potential Solution ◽  
Adult Males ◽  
Male Aggression ◽  
Dominance Style ◽  
The Social ◽  
Initial Support

The dominance style of bonobos presents an evolutionary puzzle. Bonobos are not male dominant but female bonobos do not show traits typical of female-dominant species. This chapter proposes the offspring dominance hypothesis (ODH) as a potential solution. ODH suggests the social system of bonobos evolved as a defence against infanticide and is not due to pressure to monopolize resources. Females that prevented aggression towards offspring and preferred mating with less aggressive males were most successful. Supporting ODH, during observations at Lola ya Bonobo Sanctuary it was found that: 1) adult male bonobos are rarely aggressive towards offspring with mothers, 2) some mother-reared juvenile bonobos attain rank higher than adult males and 3) mother-reared offspring often socially interact with adult males without their mothers nearby. These preliminary findings provide initial support that the bonobo social system evolved due to fitness advantages of effectively protecting offspring against consequences of male aggression. Le style de dominance des bonobos présente un puzzle évolutionnaire. Les bonobos ne sont pas dominés par les mâles mais les bonobos femelles ne montrent pas les traits caractéristiques d’une espèce dominée par femelles. On propose l’hypothèse de dominance de progéniture (ODH) comme une solution potentielle. La ODH suggère que le système social des bonobos a évolué en défense contre l’infanticide et pas sous pression pour la monopolisation des ressources. Les femelles qui préviennent l’agression vers leur progéniture et leur préférence d’accouplement avec des mâles moins agressives étaient très efficaces. À l’appui de la ODH on a trouvé pendant nos observations à Lola ya Bonobo Sanctuary que: 1) les mâles adultes bonobos agressent rarement vers les bébés avec mères, 2) quelques adolescents bonobos qui furent élevés par leurs mères atteignent un rang plus haut que les mâles adultes et 3) la progéniture élevée par la mère interagissent avec avec d’adultes mâles sans la présence de leur mère. Ces trouvailles préliminaires donnent appuie à l’hypothèse que le système social des bonobos a évolué par les avantages corporelles de la protection de la progéniture contre les conséquences de l’agression mâle.

Dispersal patterns in a regional koala population in south-east Queensland

2003 ◽  
Vol 30 (3) ◽  
pp. 281 ◽  
Author(s):  
David S. Dique ◽  
Jim Thompson ◽  
Harriet J. Preece ◽  
Deidré L. de Villiers ◽  
Frank N. Carrick
Keyword(s):  
Urban Areas ◽  
Home Ranges ◽  
Adult Males ◽  
Dispersal Patterns ◽  
Young Males ◽  
Straight Line ◽  
The Social ◽  
Straight Line Distance ◽  
Males And Females ◽  
Natal Home

Koala dispersal was investigated as part of a detailed ecological study of a nationally significant koala population located 20 km south-east of Brisbane, Queensland. From 1996 to 2000, 195 koalas from three sites were captured and fitted with radio-collars. A total of 40 koalas (23 males and 17 females) dispersed from these sites. Most (93%) dispersing individuals were 20–36 months of age. Three adult females (more than 36 months old) dispersed and no adult males dispersed during the study. A significantly higher proportion of young males dispersed than females. Dispersal occurred between June and December, with most dispersal of males commencing in July and August and that of females commencing between September and November prior to, and early in, the annual breeding season. The mean straight-line distance between the natal and breeding home ranges for males and females was similar and was measured at 3.5 km (range 1.1–9.7 km) and 3.4 km (range 0.3–10.6 km) respectively. Dispersing males and females tended to successfully disperse south and west of their natal home ranges and were generally unable to successfully disperse to urban areas within the study area, as a high proportion of the mortality of dispersing koalas was associated with attacks by domestic dogs and with collisions with vehicles on roads. Information from other studies indicates that most young koalas disperse from their natal areas. It is likely that the social behaviour and mating systems of koala populations provide mechanisms for young koalas to disperse. The potential role of dispersal in the dynamics of regional koala populations is discussed.

Effects of adults on survival and recruitment of Peromyscus leucopus

1987 ◽  
Vol 65 (10) ◽  
pp. 2519-2523
Author(s):  
Gregory H. Adler ◽  
Mark L. Wilson ◽  
Michael J. DeRosa
Keyword(s):  
Adult Female ◽  
Adult Male ◽  
Peromyscus Leucopus ◽  
Survival Rates ◽  
Adult Males ◽  
Control Grid ◽  
Young Males ◽  
Young Females ◽  
Breeding Seasons ◽  
And Control

A population of Peromyscus leucopus (white-footed mouse) in northeastern Massachusetts was manipulated for 3 years to determine the effects of adults on survival and recruitment. Two experimental grids were established, from which either all adult males or all adult females were removed continually. The effects of these two manipulations were compared with demography on a control grid. Manipulations had no apparent effect on breeding intensity of young, survival rates of adults, or residency rates of adults and young. Recruitment of adult males was higher on the adult male removal grid than on the control grid. Recruitment rates of adult males and of young males and young females were lower on the adult female removal grid than on the control grid. Survival rates of young males were higher on the adult female removal grid than on the control grid; this effect may have been due to either reduced adult female residency or adult male recruitment. All differences between experimental and control grids were noted only during breeding seasons. Adult males apparently limited recruitment of adult consexuals. The effects of manipulations on other measured parameters were inconclusive because of high immigration rates of adult males onto the adult male removal grid and reduced recruitment of adult males and decreased production of young on the adult female removal grid.

scholarly journals Brazilian Children’s Understanding of the Quality of Life in Their Living Environment: A Qualitative Study

2020 ◽  
Vol 17 (14) ◽  
pp. 5101
Author(s):  
Camilla Aparecida Silva de Oliveira ◽  
Andréa Maria Duarte Vargas ◽  
Fernanda de Morais Ferreira ◽  
Efigênia Ferreira e Ferreira
Keyword(s):  
Quality Of Life ◽  
Content Analysis ◽  
Qualitative Study ◽  
Social Environment ◽  
Physical Environment ◽  
Living Environment ◽  
Public And Private ◽  
The Social ◽  
Graphic Elements

(1) Objective: To understand the perception of Brazilian children about the Quality of Life (QoL) considering their living environment. (2) Methods: This is a qualitative study conducted with children aged 6–10 years, from a medium-sized Brazilian municipality, recruited from public and private schools. An adaptation of the “draw, write, and say” method was used to collect data. At first, all children (n = 252) drew a “neighborhood with QoL”. On the same day, the researcher analyzed the graphic elements of the representations and intentionally selected the two best-detailed drawings from each class (n = 49) and the children were invited to narrate them. The narratives were analyzed through content analysis. (3) Results: Two major themes emerged from the content analysis, namely, the physical environment and social environment. The first included the needs to live in a community, such as housing, places of leisure, essential services, and natural elements. The second was relationships with family and friends. (4) Conclusion: The children presented the meaning of an environment with QoL, pointing out essential items to have this ideal environment. The social environment and the physical environment were perceived interdependently; that is, any change in one of these aspects may affect children’s QoL.

Function and Meaning of Wild Gorilla 'Close' Calls

Behaviour ◽  
1996 ◽  
Vol 133 (11-12) ◽  
pp. 827-845 ◽  
Author(s):  
A.H. Harcourt ◽  
K.J. Stewart
Keyword(s):  
Social Interactions ◽  
Adult Male ◽  
Dominance Rank ◽  
Adult Males ◽  
Social Significance ◽  
The Social ◽  
Future Activity ◽  
Close Call ◽  
Contact Calls ◽  
Group Members

We investigate the social significance of the within group ('close') calls of gorillas by examining correlates of calling with dominance rank and with relatedness of adults, and by examining whether the outcomes of interactions between adults differ depending on the calls given during the interactions. In two wild gorilla groups, the majority of adults give most of their calls when near another adult and fully in sight of them. Thus gorillas' use 'close' calls as more than mere contact calls. An adult gorilla's use of 'close' calls correlates with its own and with its partner's dominance rank, with effects being most obvious for the most dominant animals, the fully adult males. Thus the proportion of 'double grunts', the most common 'close' call, in an individual's repertoire correlated consistently with dominance rank; all non-silverback adults gave a higher percent of double grunts in the presence of subordinates than they did near dominant animals; individuals were most likely to give 'non-syllabled' grunts in the adult male's presence; and they consistently exchanged calls at a higher rate with the adult males than with other group members. An adult's type of calls did not obviously differ depending on whether their neighbour was kin or non-kin, but kin were overall more likely to give calls in the presence of kin, and to exchange calls with kin than with non-kin, although the association was not consistent throughout the two years of the study. With regard to the consequences of calling, subordinates were less likely to be feeding one minute after an approach by a fully adult male during which calls were exchanged than during silent approaches. In contrast to findings from studies of some other species, calling did not correlate with duration of grooming. We suggest that, among other functions, gorillas' 'close' calls mediate social interactions. One form of calls, 'non-syllabled' calls, are interpretable as appeasement signals. The broadest interpretation of the 'double grunt' is that it is an exaggerated announcement of presence, whose function is to attract attention to the caller, and to signal conditional future activity.

scholarly journals АНАЛІЗ ВПЛИВУ СОЦІАЛЬНОГО ОТОЧЕННЯ НА МОДЕЛЬ ПОВЕДІНКИ СПОЖИВАЧА

2021 ◽  
pp. 76-84
Author(s):  
Анастасія Сергіївна Коноваленко
Keyword(s):  
Consumer Behavior ◽  
Social Environment ◽  
School Age Children ◽  
Decision Making Process ◽  
School Age ◽  
The Social ◽  
Reference Space ◽  
Methodological Approaches ◽  
The Impact

Formulation of the problem. The author's approach to the analysis of the impact of the social environment on the model of consumer behavior, which involves determining the intensity and direction of the impact of social groups based on the quality of the reference space by applying the proposed CNSA model ("Criticism-noise-silence-advice"). The aim of the research is to determine the methodological approaches to the analysis of the impact of the social environment in the decision-making process on the purchase and consumption of food by school-age children. The methodological basis of the study was the work of ukrainian and foreign scientists on marketing research. The hypothesis of the resaerch was the assumption of the need to substantiate methodological approaches to the analysis of the impact of the social environment on consumer behavior, taking into account the intensity and direction of the impact of different groups. The statement of basic materials. The method of analysis of the influence of social environment on consumer behavior proposed in the article involves determining the intensity of influence of social environment groups as the weight of respondents' perception of the importance of this group, and assessing the direction of social environment through analysis of the quality of the reference space based on the developed CNSA model ("Criticism-noise-silence-advice"). Based on the obtained data, it is possible to reproduce the reference space of the respondent, which is a characteristic of the quality of the impact of the social environment on the respondents in terms of specific issues. Based on the proposed method, the analysis of the impact of the social environment on the consumer behavior of school-age children. The obtained data characterize the reference space of children in view of the discussion of the nutrition system of school-age children. The originality and practical significance of the research. This technique has theoretical and applied significance and can be used to assess the impact of the social environment for different groups of respondents on specific issues of consumer behavior. Conclusions. The methodology is substantiated and on its basis the analysis of the influence of the social environment on the model of consumer behavior of school-age children in the market of food products and services is carried out. Perspectives of further research will be aimed at determining the nature of the influence of motivating and internal factors on consumer behavior, determining the specifics of the decision-making process of school-age children on the purchase and consumption of food

scholarly journals Health-Related Quality of Life of Individuals Living In Households with Depression: Evidence from the German Socio-Economic Panel (SOEP)

2021 ◽  
Author(s):  
Judith Dams ◽  
Thomas Grochtdreis ◽  
Hans-Helmut König
Keyword(s):  
Quality Of Life ◽  
Social Environment ◽  
Health Related Quality ◽  
Factors Influencing ◽  
The Social ◽  
Related Quality ◽  
Health Related ◽  
Household Members ◽  
The Impact

AbstractDepression contributes to disability more than any other mental disorder and is associated with a reduced health-related quality of life. However, the impact of depression on the social environment is relatively unknown. The current study determined differences in the health-related quality of life between co-living household members of depressed persons and persons in households without depression. Furthermore, factors influencing the health-related quality of life of co-living household members of depressed persons were evaluated. Using a sample of the German Socio-Economic Panel, health-related quality of life was measured longitudinally with the 12 item Short Form health survey. In addition to descriptive statistics, differences in health-related quality of life and factors influencing the health-related quality of life of co-living household members of depressed persons were determined by mixed effects beta regressions. Mental health-related quality of life was reduced for co-living household members of depressed persons compared with persons of households without depressed persons. Health-related quality of life of co-living household members of depressed persons was lower for women compared to men as well as for widowed persons compared to married persons. Overall, the health-related quality of life of co-living household members of depressed persons was reduced, which might be due to increased stress levels. It is therefore important to focus on support services for people in the social environment of depressed persons.

‘Neurosis' and the Personal Social Environment

1993 ◽  
Vol 162 (3) ◽  
pp. 369-374 ◽  
Author(s):  
A. C. P. Sims ◽  
D. H. Heard ◽  
C. E. Rowe ◽  
M. M. P. Gill ◽  
V. Maddock
Keyword(s):  
Inner City ◽  
Social Interactions ◽  
Social Environment ◽  
Social Relationships ◽  
Day Treatment ◽  
Interview Schedule ◽  
Neurotic Disorder ◽  
The Social

The Interview Schedule for Social Interactions (ISSI) was used to assess the social environment of 65 British inner-city patients suffering from severe neurotic disorder; all patients were offered a 12-week course of intensive day treatment with an educational and psychodynamic basis. Compared with a general population in Canberra, the neurosis sufferers had lower (morbid) scores on the ISSI for the extent and quality of their social relationships. Of the 34 subjects who completed treatment and attended for the post-treatment investigation, 21 attained a PSE score below the level for ‘caseness'. Twenty-five subjects who attended for follow-up at 18–24 months had improved significantly on all four of the standard ISSI measures, although they had not done so immediately after treatment. This suggests that although symptoms may improve at the time of treatment, social relationships improve only over several months.

scholarly journals Picture Your Nursing Home: Exploring the Sense of Home of Older Residents through Photography

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
J. van Hoof ◽  
M. M. Verhagen ◽  
E. J. M. Wouters ◽  
H. R. Marston ◽  
M. D. Rijnaard ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Nursing Home ◽  
Environmental Factors ◽  
Built Environment ◽  
Social Environment ◽  
Nursing Home Residents ◽  
The Social ◽  
Holistic Understanding ◽  
Sense Of Home

The quality of the built environment can impact the quality of life and the sense of home of nursing home residents. This study investigated (1) which factors in the physical and social environment correlate with the sense of home of the residents and (2) which environmental factors are most meaningful. Twelve participants engaged in a qualitative study, in which photography was as a supportive tool for subsequent interviews. The data were analysed based on the six phases by Braun and Clarke. The four themes identified are (1) the physical view; (2) mobility and accessibility; (3) space, place, and personal belongings; and (4) the social environment and activities. A holistic understanding of which features of the built environment are appreciated by the residents can lead to the design and retrofitting of nursing homes that are more in line with personal wishes.

Developmental and Comparative Aspects of Social Play of Mantled Howling Monkeys in Costa Rica

Behaviour ◽  
1992 ◽  
Vol 123 (1-2) ◽  
pp. 144-171 ◽  
Author(s):  
Evan L. Zucker ◽  
Margaret R. Clarke
Keyword(s):  
Costa Rica ◽  
Adult Male ◽  
Social Play ◽  
Observation Time ◽  
Adult Males ◽  
Juvenile Period ◽  
Mantled Howlers ◽  
The Social ◽  
Focal Observation ◽  
Howling Monkeys

AbstractThe social play of infant and juvenile mantled howling monkeys in Costa Rica was studied via focal sampling (529.2 h) of known individuals of known age over a 22-month period. Observations of adult males (291.2 h of focal samples), done over portions of 3 calendar years, provided supplemental data for the social play of adults. Developmental patterns of play are presented, and are compared with data available for other mantled howlers, other sites, and other species of howlers. Social play by infants and juveniles occurred at the rate of .56 bouts/h, represented 5.79% of the total focal observation time, and bouts had a mean duration of 6.19 minutes. Play by an adult male occurred at the rate of .03 bouts/h (.007/h for all 4 adult males combined), represented 0.24% of his total focal time, and had a mean duration of 5.0 minutes. Ontogenetically, social play began in the 8th week of life. Infants' rates of play and percentage of time spent in play increased from the I1 stage through the I3 stage, then decreased into the juvenile period (> 1 year of age). Mean durations of play bouts increased through the 3 infant stages, then decreased slightly in the J1 stage. The occurrence ofplay groups (3 or more individuals) increased through the infant and juvenile stages. As infants aged, a larger percentage of bouts occurred further from the infants' and juveniles' mothers. With respect to social variables, no overall developmental pattern was evident for playing with an older or younger partner, or a partner that was the offspring of a mother ranked higher or lower than one's own mother; different age classes showed different patterns. When an older sibling was available as a play partner, no preference for this relative was shown. I3's had the highest number of different play partners. Immature howlers played predominantly with other immatures (93% of their interactions). The behaviours observed during play were similar to those reported for other howlers; the behaviours emitted by an adult male were similar to those of the juvenile partner, as was the style and intensity of play. The social play of these mantled howlers is viewed with respect to social, demographic, and ecological variables. The play of howlers is both facilitated and constrained by these variables.

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