scholarly journals Division of labour influences the rate of ageing in weaver ant workers

2002 ◽  
Vol 269 (1494) ◽  
pp. 909-913 ◽  
Author(s):  
M. Chapuisat ◽  
L. Keller
Keyword(s):  
Division Of Labour ◽  
Weaver Ant ◽  
Rate Of Ageing

scholarly journals Polymorphism and division of labour in a socially complex ant: neuromodulation of aggression in the Australian weaver ant, Oecophylla smaragdina

2015 ◽  
Vol 282 (1811) ◽  
pp. 20150704 ◽  
Author(s):  
J. Frances Kamhi ◽  
Kelley Nunn ◽  
Simon K. A. Robson ◽  
James F. A. Traniello
Keyword(s):  
Social Systems ◽  
Division Of Labour ◽  
Oecophylla Smaragdina ◽  
Minor Worker ◽  
Task Specialization ◽  
Territorial Defence ◽  
Weaver Ant ◽  
Eusocial Insects ◽  
Worker Size ◽  
Pharmacological Manipulations

Complex social structure in eusocial insects can involve worker morphological and behavioural differentiation. Neuroanatomical variation may underscore worker division of labour, but the regulatory mechanisms of size-based task specialization in polymorphic species are unknown. The Australian weaver ant, Oecophylla smaragdina , exhibits worker polyphenism: larger major workers aggressively defend arboreal territories, whereas smaller minors nurse brood. Here, we demonstrate that octopamine (OA) modulates worker size-related aggression in O. smaragdina . We found that the brains of majors had significantly higher titres of OA than those of minors and that OA was positively and specifically correlated with the frequency of aggressive responses to non-nestmates, a key component of territorial defence. Pharmacological manipulations that effectively switched OA action in major and minor worker brains reversed levels of aggression characteristic of each worker size class. Results suggest that altering OA action is sufficient to produce differences in aggression characteristic of size-related social roles. Neuromodulators therefore may generate variation in responsiveness to task-related stimuli associated with worker size differentiation and collateral behavioural specializations, a significant component of division of labour in complex social systems.

scholarly journals Spatial protein quality control and the evolution of lineage-specific ageing

2011 ◽  
Vol 366 (1561) ◽  
pp. 71-75 ◽  
Author(s):  
Thomas Nyström
Keyword(s):  
Quality Control ◽  
Protein Quality ◽  
Protein Quality Control ◽  
Division Of Labour ◽  
Cell Renewal ◽  
Periodic Cell ◽  
Age Related ◽  
Selective Forces ◽  
Rate Of Ageing ◽  
Protein Folding Disorders

Propagation of a species requires periodic cell renewal to avoid clonal extinction. Sexual reproduction and the separation of germ cells from the soma provide a mechanism for such renewal, but are accompanied by an apparently mandatory ageing of the soma. Data obtained during the last decade suggest that a division of labour exists also between cells of vegetatively reproducing unicellular organisms, leading to the establishment of a soma-like and germ-like lineage with distinct fitness and longevity characteristics. This division of labour in both bacteria and yeast entails segregation of damaged and aggregated proteins such that the germ-like lineage is kept free of damage to the detriment of the soma-like lineage. In yeast, this spatial protein quality control (SQC) encompasses a CCT-chaperonin-dependent translocation and merging of cytotoxic protein aggregates. This process is regulated by Sir2, a protein deacetylase that modulates the rate of ageing in organisms ranging from yeast to worms and flies. Recent data also demonstrate that SQC is intimately integrated with the machinery establishing proper cell polarity and that this machinery is required for generating a soma-like and germ-like lineage in yeast. Deciphering the details of the SQC network may increase our understanding of the development of age-related protein folding disorders and shed light on the selective forces that paved the way for polarity and lineage-specific ageing to evolve.

Sociological dimension of economic globalization: world trends and Ukrainian realities (Second part. Social changes in Ukrainian society in the context of economic globalization)

2020 ◽  
pp. 68-110
Author(s):  
Tetiana Petrushyna ◽  
Anatolii Arseienko
Keyword(s):  
Economic Globalization ◽  
Division Of Labour ◽  
Social Consequences ◽  
Social Discourse ◽  
Social Changes ◽  
Significant Deterioration ◽  
Global Competitiveness ◽  
Critical Areas ◽  
Systemic Crisis ◽  
Ukrainian Society

Globalization remains the most common and quite controversial concept in modern social discourse. Within the theoretical and conceptual sociological dimension, the authors analyzed the essence of economic globalization (EG) as its defining type. They studied globalization as an objective process (first of all, the international division of labour) and the subjective process of forming a global capitalist economy under the auspices of leading Western countries, supranational financial and economic institutions (primarily the World Bank and the IMF), TNCs. As the main drivers of globalization, they determine its forms and directions in the interests of the "core" of global capitalism. Within the empirical sociological dimension of EG (which involves measuring the various manifestations of the EG process itself as well as its social consequences), the authors paid particular attention to the analysis of social changes in Ukrainian society. The capitalization of the Ukrainian economy, which took place in parallel with Ukraine’s entry into the global economic space, led to degradation of the national economy, significant deterioration of living standards of most citizens, creation of anti-social state with the systemic crisis as its main attribute. To prove these conclusions, the authors analyzed the dynamics of the principal macroeconomic and sociological indicators of Ukrainian society’s life for almost 30 years of drift to the roadside of the global capitalist world, based on the study of numerous domestic and foreign sources. The authors focused on the research of eight critical areas of social changes: deindustrialization of the economy, global competitiveness and innovation, GDP dynamics, employment, income and welfare of the population, socioeconomic inequality, debt dependence and degradation of Ukrainian science. The analysis shows the need to abandon the neoliberal paradigm of development and search for the alternative and more fair models of EG.

WHO DO WE THINK WE ARE? COMPARING INTERSECTIONAL IDENTITY TRENDS IN ASEE AND CEEA-ACEG USING NATURAL LANGUAGE PROCESSING AND REVIEW OF PROCEEDINGS

2019 ◽  
Author(s):  
Pamela Rogalski ◽  
Eric Mikulin ◽  
Deborah Tihanyi
Keyword(s):  
Natural Language Processing ◽  
Natural Language ◽  
Activity Theory ◽  
Language Processing ◽  
Division Of Labour ◽  
Cultural Historical Activity Theory ◽  
Original Question ◽  
Micro Level ◽  
Historical Activity ◽  
Cultural Historical Activity

In 2018, we overheard many CEEA-AGEC members stating that they have "found their people"; this led us to wonder what makes this evolving community unique. Using cultural historical activity theory to view the proceedings of CEEA-ACEG 2004-2018 in comparison with the geographically and intellectually adjacent ASEE, we used both machine-driven (Natural Language Processing, NLP) and human-driven (literature review of the proceedings) methods. Here, we hoped to build on surveys—most recently by Nelson and Brennan (2018)—to understand, beyond what members say about themselves, what makes the CEEA-AGEC community distinct, where it has come from, and where it is going. Engaging in the two methods of data collection quickly diverted our focus from an analysis of the data themselves to the characteristics of the data in terms of cultural historical activity theory. Our preliminary findings point to some unique characteristics of machine- and human-driven results, with the former, as might be expected, focusing on the micro-level (words and language patterns) and the latter on the macro-level (ideas and concepts). NLP generated data within the realms of "community" and "division of labour" while the review of proceedings centred on "subject" and "object"; both found "instruments," although NLP with greater granularity. With this new understanding of the relative strengths of each method, we have a revised framework for addressing our original question.  

Moral Norms in Social Contexts

2018 ◽  
Author(s):  
Lisa Herzog
Keyword(s):  
Division Of Labour ◽  
Social Contexts ◽  
Moral Norms ◽  
Overlapping Consensus ◽  
Social Sphere ◽  
Moral Theories ◽  
Moral Dimensions ◽  
Collective Harm ◽  
Normative Foundations

This chapter sets out the normative foundations on which the book is based. It starts by defending the case for the ‘pervasiveness’ of morality: no social sphere is ‘beyond’ morality, even if there is some degree of institutional ‘division of labour’. Next, it states and explains the moral norms this study is based on: the norm to respect all individuals as moral equals, and norms about the avoidance of individual harm, and about avoiding contributing to collective harm. These norms lie within an ‘overlapping consensus’ of different moral theories and worldviews. In pluralist societies, we should focus on such a consensus—even if it may sometimes be hard to delineate—when reflecting on the moral dimensions of organizations.

Distributed Creativity

2017 ◽  
Keyword(s):  
Contemporary Music ◽  
Division Of Labour ◽  
Conceptual Frameworks ◽  
Creative Processes ◽  
Distinctive Features ◽  
Concert Music ◽  
Collaborative Creativity ◽  
Collaborative Working ◽  
Working Practices ◽  
And Performance

Creative practice in music takes place in a distributed and interactive manner embracing the activities of composers, performers and improvisers—despite the sharp division of labour between these roles that traditional concert culture often presents. Two distinctive features of contemporary music are the greater incorporation of improvisation and the development of integrated and collaborative working practices between composers and performers. By blurring the distinction between composition and performance, improvisation and collaboration provide important perspectives on the distributed creative processes that play a central role in much contemporary concert music. This volume explores how collaboration and improvisation enable and constrain these creative processes. Organized into three parts, thirteen chapters and twelve shorter Interventions present diverse perspectives on distributed and collaborative creativity in music, on a range of collaborations between composers and performers, and on the place of improvisation within contemporary music, broadly defined. The thirteen chapters provide more substantial discussions of a variety of conceptual frameworks and particular projects, while the twelve Interventions provide more informal contributions from a variety of practitioners (composers, performers, improvisers), giving direct insights into the pleasures and problems of working creatively in music in collaborative and improvised ways.

The labour that dare not speak its name

2017 ◽  
Author(s):  
Jason Toynbee
Keyword(s):  
Social Structure ◽  
Large Scale ◽  
Division Of Labour ◽  
Concrete Material ◽  
Material World ◽  
Music Making ◽  
Causal Impact ◽  
Musical Creativity ◽  
Material Conditions

The is chapter argues that to understand the distributed nature of musical creativity we need to examine its connection to large-scale social structure and to capitalist relations of labour. These relations have a ‘downward’ causal impact on creative acts. Firstly, this is through the division of labour, which plays out in different ways across genres from classical to pop. Secondly, creative musical labour involves engagement with the concrete, material world. The distributed nature of creativity is determined not only by the drive to divide or consolidate music-making tasks but also depends on the nature of the musical materials to hand, and methods of dealing with them. Two methods are described in this chapter: translation and intensification. Each (sometimes they are combined) entails the making of relatively autonomous creative choices which are emergent from the structural and material conditions of musical labour.

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