scholarly journals Observations of neotropical social wasps (Hymenoptera, Vespidae) preying on eggs and tadpoles of the frog Engystomops pustulosus (Amphibia, Leptodactylidae)

2020 ◽  
Vol 78 ◽  
pp. 91-96
Author(s):  
Christopher K. Starr ◽  
Rakesh Bhukal ◽  
Shane T. Ballah
Keyword(s):  
West Indies ◽  
Early Stage ◽  
Social Wasps ◽  
The Social ◽  
Engystomops Pustulosus

In Trinidad, West Indies the social wasps Angiopolybia pallens and Polybia rejecta come to foam nests of the frog Engystomops pustulosus, where they prey on eggs and tadpoles. Frog offspring in early-stage foam nests appear to be almost immune to predation by the wasps, but they become more vulnerable as the nests age and lose definition.

First observations of a social wasp preying on termite workers

Sociobiology ◽  
2017 ◽  
Vol 64 (2) ◽  
pp. 225
Author(s):  
Christopher K Starr
Keyword(s):  
West Indies ◽  
Social Wasp ◽  
Social Wasps ◽  
First Report ◽  
Nasutitermes Corniger ◽  
The Social

The social wasp Polybia quadricincta is observed preying opportunistically on workers of the termite Nasutitermes corniger in Trinidad, West Indies.  Several Polybia spp. and other social wasps are known to prey on winged reproductive, but this appears to be the first report of any preying on workers.

Antecedents of growth-oriented entrepreneurship before and during the Greek economic crisis

2017 ◽  
Vol 24 (3) ◽  
pp. 528-544 ◽  
Author(s):  
Ioannis Giotopoulos ◽  
Alexandra Kontolaimou ◽  
Aggelos Tsakanikas
Keyword(s):  
Work Experience ◽  
Early Stage ◽  
New Ventures ◽  
High Growth ◽  
Content Type ◽  
Crisis Period ◽  
Individual Level ◽  
Level Data ◽  
The Social ◽  
Before And After

Purpose The purpose of this paper is to explore potential drivers of high-growth intentions of early-stage entrepreneurs in Greece before and after the onset of the financial crisis of 2008. Design/methodology/approach To this end, the authors use individual-level data retrieved from Global Entrepreneurship Monitor annual surveys (2003-2015). Findings The results show that high-growth intentions of Greek entrepreneurs are driven by different factors in the crisis compared to the non-crisis period. Male entrepreneurs and entrepreneurs with significant work experience seem to be more likely to be engaged in growth-oriented new ventures during the crisis period. The same appears to hold for entrepreneurs who are motivated by an opportunity and also perceive future business opportunities in adverse economic conditions. On the other hand, the educational level and the social contacts of founders with other entrepreneurs are found to drive ambitious Greek entrepreneurship in the years before the crisis, while they were insignificant after the crisis outbreak. Originality/value Based on the concept of ambitious entrepreneurship, this study contributes to the literature by investigating the determinants of entrepreneurial high-growth expectations in the Greek context emphasizing the crisis period in comparison to the pre-crisis years.

Venom gland morphology in Pepsis pallidolimbata pallidolimbata and biological use and activity of Pepsis venom

1997 ◽  
Vol 75 (7) ◽  
pp. 1014-1019 ◽  
Author(s):  
E. Schoeters ◽  
J. Billen ◽  
J. O. Schmidt
Keyword(s):  
Venom Gland ◽  
Social Wasps ◽  
Morphological Organization ◽  
The Social ◽  
The Family ◽  
Venom Glands ◽  
Glandular Structures ◽  
Sibling Family

Spider wasps, i.e., the family Pompilidae, in general, and those belonging to the genus Pepsis in particular, are acknowledged to possess venoms that are algogenic to humans and thus have the parsimonious functions of causing paralysis and providing defense against predators. The morphological organization of the venom system and its complex convoluted gland closely resembles that in social members of the Vespidae. These features distinguish the venom glands of the Pompilidae from those of the sibling family Mutillidae as well as those of the family Sphecidae, which lack convoluted glands. Although the venom glands in Pepsis species are very similar in morphology to those of social vespids, the lethality of Pepsis venom to mammals is several times less than that of the social common wasps. These findings suggest that in terms of the evolution of venom activity and the associated glandular structures, there was apparently no need for social wasps to develop extra parts of the venom system for producing toxic, lethal, or powerful algogenic components. All of the glandular parts of the venom gland of social wasps were already present in pompilids (and eumenids) and, presumably, in their ancestors.

The Social Wasps of India and the Adjacent Countries (Hymenoptera: Vespidae)

1989 ◽  
Vol 23 (1) ◽  
pp. 389-389 ◽  
Author(s):  
Bina Pani Das ◽  
Virendra K. Gupta
Keyword(s):  
Social Wasps ◽  
The Social

scholarly journals SOCIAL STRUCTURE OF ANCIENT RUSSIA

2022 ◽  
pp. 25-29
Author(s):  
Алена Владимировна Искрина
Keyword(s):  
Social Structure ◽  
Social Stratification ◽  
Early Stage ◽  
The State ◽  
Historical Period ◽  
Historical Events ◽  
Main Research ◽  
Stage Of Development ◽  
Political Events ◽  
The Social

В статье рассматриваются особенности формирования социальной стратификации Древней Руси на раннем этапе развития, этапы появления различных страт в зависимости от социально-политических событий с X по XII вв. Предметом исследования является процесс образования социальных страт в древнерусском государстве. Цель статьи - рассмотреть социальное устройство Древней Руси, определить и описать стратификацию и взаимодействие страт между собой, историю изучения данного вопроса, политические события, влияющие на данные процессы. Основным вопросом исследования явились исторические события, оказавшие влияние на формирование социальных страт с X по XII вв., появление социальных страт в данный исторический период и формы их взаимодействия. Отвечая на данный вопрос, автор приходит к выводу, что разложение патриархально-общинного строя, формирование феодального вассалитета, принципа майората, княжеской дружины и другие внутриполитические события повлияли на формирование социальных страт государства. В связи с данными историческими событиями удается проследить этапы происхождения социальных слоев населения, их состав, социальные функции в обществе и государстве. The paper examines the features of the social stratification of the Ancient system at an early stage of development, the stages of the emergence of various strata depending on political events from the 10th to the 12th centuries. The subject of this research is the process of the formation of social strata in the ancient European state. The purpose of the publication is to consider the social structure of Ancient Rus, to determine and describe the stratification and interaction of strata with each other, to study this issue, political events that affect these processes. The main research issue was the historical events that influenced the formation of social strata from the 10th to the 12th centuries, the emergence of social strata in a given historical period and the forms of their interaction. Answering this question, the author arrives at the conclusion that the disintegration of the patriarchal-communal system, the formation of a feudal vassalage, the principle of primacy, the princely squad and other internal political events influenced the formation of social strata of the state. In connection with these historical events, it is possible to trace the stages of the origin of social strata of the population, their composition, social functions in society and the state.

scholarly journals ThessAHALL—A Life-Long Learning Programme for the Social Inclusion of “Early-Stage” Older Adult Researchers

2021 ◽  
pp. 89-97
Author(s):  
Despoina Mantziari ◽  
Evdokimos Konstantinidis ◽  
Despoina Petsani ◽  
Nikolaos Kyriakidis ◽  
Vassiliki Zilidou ◽  
...  
Keyword(s):  
Older Adults ◽  
Social Exclusion ◽  
Older Adult ◽  
Social Inclusion ◽  
Early Stage ◽  
Open Science ◽  
Ageing Population ◽  
Life Long Learning ◽  
The Social

AbstractAiming at limiting the risk of ageism & social exclusion of older adults in society, the Thess-AHALL looks at co-design and open science solutions for social inclusion for the ageing population.

Differences in Variability, Interactivity and Skills in Social Play of Young Chimpanzees Living in Peer Groups and in a Large Family Zoo Group

Behaviour ◽  
1996 ◽  
Vol 133 (9-10) ◽  
pp. 717-739 ◽  
Author(s):  
Jan A.R.A.M. van HOOFF ◽  
Herman Dienske ◽  
Warner Jens ◽  
René P. Spijkerman
Keyword(s):  
Early Stage ◽  
Sex Role ◽  
Peer Group ◽  
Peer Groups ◽  
Large Family ◽  
Social Play ◽  
Well Being ◽  
Detailed Comparison ◽  
Partner Choice ◽  
The Social

AbstractThis paper provides a detailed comparison of play characteristics of chimpanzees raised in peer-only groups and in a socially complex semi-natural zoo situation. We expected play in peer groups to be of a lesser quality, that is less variable, interactive and skillful. To test this we quantified details such as the diversity of social play types, the bout length, the way social play is started, maintained and stopped and the use of play signals. The differences in play-type frequencies between the groups are most likely caused by differences in housing conditions and demographics; the smaller sex difference in peer group adolescents is most likely due to a limited partner choice. We found no indication that chimpanzees raised in peer groups played less diversely than those in the zoo. The social play characteristics of peer group and zoo chimpanzees are similar, except for the frequency of gnaws before wrestle and the frequency of play-faces within wrestle. Overall, there are no results from which we can conclude directly that chimpanzees isolated from their mother at an early stage and placed in a peer group are less capable in social play, although possibly it is more clear to the zoo individuals that a next interaction will be 'play'; zoo individuals may need less regular removal of ambiguity about the intention of the behaviour. The few differences between peer group and zoo in their social play characteristics that can be related to peer group rearing conditions indicate that the social development in those chimpanzees raised in peer groups is similar to that of chimpanzees in the semi-natural zoo. This is not to say that providing more natural conditions than is usually done in laboratories is unnecessary. These may still add considerably to the animals' well-being and in terms of animal welfare, it can be concluded that a variety of partners in the housing condition is beneficial to speed of sex-role development in young chimpanzees.

scholarly journals Household Diversity and the Impacts of COVID-19 on Families in Portugal

2021 ◽  
Vol 6 ◽  
Author(s):  
Rita Gouveia ◽  
Vasco Ramos ◽  
Karin Wall
Keyword(s):  
Online Survey ◽  
Early Stage ◽  
Well Being ◽  
Social Needs ◽  
Family Routines ◽  
Public Authorities ◽  
The Social ◽  
Household Diversity ◽  
Probabilistic Sample ◽  
The Impact

Throughout the world, the COVID-19 pandemic disrupted family routines, relationships, projects and sociability, threatening the health, income, social cohesion, and well-being of individuals and their families. Lockdown restrictions imposed during the first wave of the pandemic challenged the theories, concepts, and methods used by family sociologists and the intersecting fields of gender and social inequality. By restricting physical interactions to co-resident family members, the household regained a privileged role as a crucial social laboratory for studying the impact of COVID-19 on family life. The difficulties encountered by individuals in maintaining and dealing with close relationships across households and geographical borders, in a context in which relational proximity was discouraged by the public authorities, exposed the linked nature of family and personal relationships beyond the limits of co-residence. The main aim of this article is to investigate the social impacts of the pandemic on different types of households during the first lockdown at an early stage of the pandemic in Portugal. Drawing on an online survey applied to a non-probabilistic sample of 11,508 households between 25 and 29 March 2020, the authors combined quantitative and qualitative methods, including bi-variate inferential statistics, cluster analysis and in-depth case studies. The article distinguishes between different household types: solo, couple with and without children, extended, friendship, lone-parent families, and intermittent arrangements, such as shared custody. A cross-tabulation of the quantitative data with open-ended responses was carried out to provide a refined analysis of the household reconfigurations brought about during lockdown. The analysis showed how pre-existing unequal structural living conditions shaped the pathways leading to household reconfiguration as families sought to cope with restrictions on mobility, social distancing norms, and other lockdown measures. The findings stress that, in dealing with a crisis, multilevel welfare interventions need to be considered if governments are to cater to the differentiated social needs and vulnerabilities faced by individuals and families.

Experimental Approaches to Studying Ethical-Unethical Behavior in Organizations

1992 ◽  
Vol 2 (2) ◽  
pp. 121-136 ◽  
Author(s):  
Linda Klebe Trevino
Keyword(s):  
Unethical Behavior ◽  
Early Stage ◽  
Test Theory ◽  
Potential Contribution ◽  
Social Scientific Study ◽  
Stage Of Development ◽  
The Social ◽  
Experimental Approaches ◽  
Field Experimentation ◽  
Social Scientific

The social scientific study of ethical-unethical behavior in work organizations is in an early stage of development. This paper discusses some of the problems of conducting social scientific research in this area and explores the potential contribution of experimental research approaches. Both laboratory and field experimentation allow the investigator to test theory-based hypotheses and to study causal relations. Examples are provided of investigations that have applied these methods to the study of business ethics.

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