Inter-individual differences of calling and exploratory behaviour in a lebinthine cricket species hint at different mate-finding strategies

Behaviour ◽  
2021 ◽  
pp. 1-27
Author(s):  
Ming Kai Tan ◽  
Stefan Schöneich ◽  
Tony Robillard
Keyword(s):  
Individual Differences ◽  
Exploratory Behaviour ◽  
Behavioural Syndrome ◽  
Mate Finding ◽  
Individual Fitness ◽  
Trade Offs ◽  
Different Types ◽  
Survival And Reproduction ◽  
Active Exploration ◽  
Behavioural Strategies

Abstract Individual fitness can be boosted by behavioural strategies that maximise mate-finding probability while minimising predation risk. Animals that use acoustics to find mates may benefit from using both stationary calling and active exploration, but these also expose them to different types of predators. Studying calling and searching behaviours concurrently allows us to understand their evolutionary trade-offs between survival and reproduction. Unlike most other crickets, lebinthine males alternate between singing and exploration to find females, which offer a unique and excellent opportunity to test for inter-individual differences and behavioural syndrome between call properties and exploratory behaviours. Our data demonstrate that call properties and exploratory behaviour were repeatable. We did not, however, find that call properties correlate with exploration as some consistently exploratory individuals produce longer calls while others produce shorter calls. Our study suggests that lebinthine males use different combinations of calling and exploratory behaviours to cope with unpredictable risk–benefit scenarios.

Challenges in the Empirical Study of Global Governance Legitimacy

2018 ◽  
Author(s):  
Steven Bernstein
Keyword(s):  
Empirical Study ◽  
Global Governance ◽  
Research Agenda ◽  
Cultural Factors ◽  
Theory Building ◽  
Trade Off ◽  
Trade Offs ◽  
Different Types ◽  
Political Communities

This commentary discusses three challenges for the promising and ambitious research agenda outlined in the volume. First, it interrogates the volume’s attempts to differentiate political communities of legitimation, which may vary widely in composition, power, and relevance across institutions and geographies, with important implications not only for who matters, but also for what gets legitimated, and with what consequences. Second, it examines avenues to overcome possible trade-offs from gains in empirical tractability achieved through the volume’s focus on actor beliefs and strategies. One such trade-off is less attention to evolving norms and cultural factors that may underpin actors’ expectations about what legitimacy requires. Third, it addresses the challenge of theory building that can link legitimacy sources, (de)legitimation practices, audiences, and consequences of legitimacy across different types of institutions.

scholarly journals Between Market Failures and Justice Failures: Trade-Offs Between Efficiency and Equality in Business Ethics

2021 ◽  
Author(s):  
Charlie Blunden
Keyword(s):  
Business Ethics ◽  
Private Firms ◽  
Market Failures ◽  
Costs And Benefits ◽  
Trade Offs ◽  
Efficiency Losses ◽  
Different Types ◽  
Hybrid Theory ◽  
Market Failures Approach ◽  
Ethical Obligations

AbstractThe Market Failures Approach (MFA) is one of the leading theories in contemporary business ethics. It generates a list of ethical obligations for the managers of private firms that states that they should not create or exploit market failures because doing so reduces the efficiency of the economy. Recently the MFA has been criticised by Abraham Singer on the basis that it unjustifiably does not assign private managers obligations based on egalitarian values. Singer proposes an extension to the MFA, the Justice Failures Approach (JFA), in which managers have duties to alleviate political, social, and distributive inequalities in addition to having obligations to not exploit market failures. In this paper I describe the MFA and JFA and situate them relative to each other. I then highlight a threefold distinction between different types of obligations that can be given to private managers in order to argue that a hybrid theory of business ethics, which I call the MFA + , can be generated by arguing that managers have obligations based on efficiency and duties based on equality to the extent that these latter obligations do not lead to efficiency losses. This argument suggests a novel theoretical option in business ethics, elucidates the issues that are at stake between the MFA and the JFA, and clarifies the costs and benefits of each theory.

Interest as the Missing Motivator in Self-Regulation

2005 ◽  
Vol 10 (3) ◽  
pp. 175-186 ◽  
Author(s):  
Carol Sansone ◽  
Dustin B. Thoman
Keyword(s):  
Individual Differences ◽  
Psychiatric Disorders ◽  
Close Relationships ◽  
Self Regulation ◽  
Goal Pursuit ◽  
Drop Out ◽  
Goal Striving ◽  
Trade Offs ◽  
And Performance

Abstract. Typically, models of self-regulation include motivation in terms of goals. Motivation is proposed to fluctuate according to how much individuals value goals and expect to attain them. Missing from these models is the motivation that arises from the process of goal-pursuit. We suggest that an important aspect of self-regulation is monitoring and regulating our motivation, not just our progress toward goals. Although we can regulate motivation by enhancing the value or expectancy of attaining the outcome, we suggest that regulating the interest experience can be just as, if not more, powerful. We first present our model, which integrates self-regulation of interest within the goal-striving process. We then briefly review existing evidence, distinguishing between two broad classes of potential interest-enhancing strategies: intrapersonal and interpersonal. For each class of strategies we note what is known about developmental and individual differences in whether and how these kinds of strategies are used. We also discuss implications, including the potential trade-offs between regulating interest and performance, and how recognizing the role of the interest experience may shed new light on earlier research in domains such as close relationships, psychiatric disorders, and females' choice to drop out of math and science.

scholarly journals Avoidance of Contaminated Food Correlates With Low Protozoan Infection in Bonobos

2021 ◽  
Vol 9 ◽  
Author(s):  
Cécile Sarabian ◽  
Raphaël Belais ◽  
Andrew J. J. MacIntosh
Keyword(s):  
Infectious Agent ◽  
Oral Route ◽  
Behavioral Experiments ◽  
Food Items ◽  
Individual Fitness ◽  
Behavioral Adaptations ◽  
Trade Offs ◽  
Protozoan Infection ◽  
Contaminated Food ◽  
The Individual

Intense selection pressure from parasites on free-living animals has resulted in behavioral adaptations that help potential hosts avoid sources of infection. In primates, such “behavioral immunity” is expressed in different contexts and may vary according to the ecology of the host, the nature of the infectious agent, and the individual itself. In this study, we investigated whether avoidance of contaminated food was associated with reduced parasite infection in sanctuary-housed bonobos. To do this, we used bonobos’ responses to soil- and fecally-contaminated food in behavioral experiments, and then compared the results with an estimate of protozoan infection across individuals. We found that avoidance of contaminated food correlated negatively with Balantioides coli infection, a potentially pathogenic protozoan transmitted through the fecal-oral route. The association between avoidance responses and parasitism were most evident in experiments in which subjects were offered a choice of food items falling along a gradient of fecal contamination. In the case of experiments with more limited options and a high degree of contamination, most subjects were averse to the presented food item and this may have mitigated any relationship between feeding decisions and infection. In experiments with low perceived levels of contamination, most subjects consumed previously contaminated food items, which may also have obscured such a relationship. The behavioral immunity observed may be a consequence of the direct effects of parasites (infection), reflecting the first scale of a landscape of disgust: individual responses. Indirect effects of parasites, such as modulation of feeding decisions and reduced social interactions—and their potential trade-offs with physiological immunity—are also discussed in light of individual fitness and primate evolution. This study builds on previous work by showing that avoidance behaviors may be effective in limiting exposure to a wide diversity of oro-fecally transmitted parasites.

scholarly journals Research on Mediating Mechanisms and the Impact on Food Provision Services in Poor Areas from the Perspective of Stakeholders

2021 ◽  
Vol 18 (19) ◽  
pp. 10510
Author(s):  
Tianwei Geng ◽  
Hai Chen ◽  
Di Liu ◽  
Qinqin Shi ◽  
Hang Zhang
Keyword(s):  
Ecosystem Service ◽  
Behavioral Responses ◽  
The Loess Plateau ◽  
Trade Offs ◽  
Different Types ◽  
Mediating Mechanisms ◽  
The Common ◽  
Food Provision ◽  
The Impact ◽  
The Relationship

Exploring and analyzing the common demands and behavioral responses of different stakeholders is important for revealing the mediating mechanisms of ecosystem service (ES) and realizing the management and sustainable supply of ES. This study took Mizhi County, a poverty-stricken area on the Loess Plateau in China, as an example. First, the main stakeholders, common demands, and behavioral responses in the food provision services were identified. Second, the relationship among stakeholders was analyzed. Finally, this study summarized three types of mediating mechanisms of food provision services and analyzed the influence of the different types of mediating mechanisms. The main conclusions are as follows: (1) Five main stakeholders in the study area were identified: government, farmers, enterprises, cooperatives, and middlemen. (2) Increasing farmers’ income is the common demand of most stakeholders in the study area, and this common demand has different effects on the behavioral responses of different stakeholders. (3) There are three types of mediating mechanisms in the study area: government + farmers mediating corn and mutton, government + enterprises mediating millet, and government + cooperatives mediating apples. On this basis, the effects of the different types of mediating mechanisms on variations in food yield, and trade-offs and synergies in typical townships, were analyzed.

scholarly journals Major Evolutionary Transitions in Social Insects, the Importance of Worker Sterility and Life History Trade-Offs

2021 ◽  
Vol 9 ◽  
Author(s):  
Abel Bernadou ◽  
Boris H. Kramer ◽  
Judith Korb
Keyword(s):  
Life History ◽  
Social Insects ◽  
Division Of Labour ◽  
Evolutionary Transitions ◽  
Individual Level ◽  
Individual Fitness ◽  
Trade Offs ◽  
Group Members ◽  
The Individual ◽  
Worker Sterility

The evolution of eusociality in social insects, such as termites, ants, and some bees and wasps, has been regarded as a major evolutionary transition (MET). Yet, there is some debate whether all species qualify. Here, we argue that worker sterility is a decisive criterion to determine whether species have passed a MET (= superorganisms), or not. When workers are sterile, reproductive interests align among group members as individual fitness is transferred to the colony level. Division of labour among cooperating units is a major driver that favours the evolution of METs across all biological scales. Many METs are characterised by a differentiation into reproductive versus maintenance functions. In social insects, the queen specialises on reproduction while workers take over maintenance functions such as food provisioning. Such division of labour allows specialisation and it reshapes life history trade-offs among cooperating units. For instance, individuals within colonies of social insects can overcome the omnipresent fecundity/longevity trade-off, which limits reproductive success in organisms, when increased fecundity shortens lifespan. Social insect queens (particularly in superorganismal species) can reach adult lifespans of several decades and are among the most fecund terrestrial animals. The resulting enormous reproductive output may contribute to explain why some genera of social insects became so successful. Indeed, superorganismal ant lineages have more species than those that have not passed a MET. We conclude that the release from life history constraints at the individual level is a important, yet understudied, factor across METs to explain their evolutionary success.

Public Capital and Innovation

2012 ◽  
Author(s):  
Pierre-Richard Agénor
Keyword(s):  
Public Policy ◽  
Public Capital ◽  
Spillover Effects ◽  
Critical Issue ◽  
Government Interventions ◽  
Trade Offs ◽  
Different Types ◽  
Innovation Capacity ◽  
The Government ◽  
The Impact

This chapter extends the Allais–Samuelson Overlapping Generations models presented in chapters 1 and 2 to study interactions between infrastructure and human capital with R&D activities and growth. It begins by providing some background evidence on these interactions. The model is then presented and solved, and the impact of public policy, including potential trade-offs associated with the provision of infrastructure and other services by the government, is discussed. Again, this is a critical issue; if governments have access to limited resources to cover their expenditure, different types of government interventions may entail (temporary or permanent) trade-offs at the macroeconomic level—even though at the microeconomic or sectoral level these interventions are largely complementary. In addition, different types of government intervention may generate spillover effects on other sectors, which may have an indirect impact on innovation capacity.

Distinct profiles of stimulus specific cortical activity for ignoring distraction during working memory encoding and maintenance, and associations with performance

2020 ◽  
Author(s):  
Charlotte Ashton ◽  
André Gouws ◽  
Marcus Glennon ◽  
THEODORE ZANTO ◽  
Steve Tipper ◽  
...  
Keyword(s):  
Working Memory ◽  
Individual Differences ◽  
Relevant Information ◽  
Cortical Activity ◽  
Irrelevant Information ◽  
Neural Mechanisms ◽  
Memory Encoding ◽  
Different Types ◽  
Short Time

Abstract Our ability to hold information in mind for a short time (working memory) is separately predicted by our ability to ignore two types of distraction: distraction that occurs while we put information into working memory (encoding) and distraction that occurs while we maintain already encoded information within working memory. This suggests that ignoring these different types of distraction involves distinct mechanisms which separately limit performance. Here we used fMRI to measure category-sensitive cortical activity and probe these mechanisms. The results reveal specific neural mechanisms by which relevant information is remembered and irrelevant information is ignored, which contribute to intra-individual differences in WM performance.

scholarly journals Positive Correlation between Pesticide Consumption and Longevity in Solitary Bees: Are We Overlooking Fitness Trade-Offs?

Insects ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 819
Author(s):  
Verena Strobl ◽  
Domenic Camenzind ◽  
Angela Minnameyer ◽  
Stephanie Walker ◽  
Michael Eyer ◽  
...  
Keyword(s):  
Food Consumption ◽  
False Negative ◽  
Solitary Bees ◽  
Negative Effects ◽  
Physiological Factors ◽  
Positive Correlation ◽  
Agricultural Pesticides ◽  
Negative Results ◽  
Trade Offs ◽  
Survival And Reproduction

The ubiquitous use of pesticides is one major driver for the current loss of biodiversity, and the common practice of simultaneously applying multiple agrochemicals may further contribute. Insect toxicology currently has a strong focus on survival to determine the potential hazards of a chemical routinely used in risk evaluations. However, studies revealing no effect on survival or even indicating enhanced survival are likely to be misleading, if potential trade-offs between survival and other physiological factors are overlooked. Here, we used standard laboratory experiments to investigate the sublethal (i.e., food consumption) and lethal (i.e., survival) effects of two common agricultural pesticides (Roundup® and clothianidin) on adult female solitary bees, Osmia bicornis. The data showed no significant effect of the treatment on cumulative survival; however, a significant positive correlation between herbicide and insecticide exposure and age was revealed, i.e., bees exposed to higher dosages lived longer. As no significant differences in daily food consumption were observed across treatment groups, increased food intake can be excluded as a factor leading to the prolonged survival. While this study does not provide data on fitness effects, two previous studies using solitary bees observed significant negative effects of neonicotinoid insecticides on fitness, yet not on survival. Thus, we conjecture that the observed non-significant effects on longevity may result from a trade-off between survival and reproduction. The data suggest that a focus on survival can lead to false-negative results and it appears inevitable to include fitness or at least tokens of fitness at the earliest stage in future risk assessments.

Quantifying the Effects of Multi-Tasking on Processing Efficiency

2018 ◽  
Vol 62 (1) ◽  
pp. 1717-1721
Author(s):  
Elizabeth L. Fox ◽  
Joseph W. Houpt
Keyword(s):  
Individual Differences ◽  
System Design ◽  
Task Demands ◽  
Task Characteristics ◽  
Baseline Model ◽  
Processing Efficiency ◽  
Different Types ◽  
Unique Individual ◽  
And Task ◽  
Task Environments

The type and amount of task demands that humans must simultaneously process and respond to influences how efficient they are in completing the tasks. Capturing how and to what degree human efficiency changes in different task environments is crucial to inform an appropriate system design. An individual-based analytic approach is necessary to accurately capture performance changes and lend practical suggestions. We can provide designers with the amount and type of task demands that we expect a person to sustain adequate performance given their unique underlying cognitive properties. We develop a metric, multi-tasking throughput (MT), that provides the extent to which a person processes tasks more efficiently, the same, or less efficiently when required to complete several different types of tasks at once. This is a cognitive-based, standardized metric; meaning it yields the relative degree of change from a baseline model that is created to accommodate to unique individual differences, numbers of tasks, and task characteristics. We quantify MT by using transformations of RTs to predict the extent that external demands of multi-tasking exceeds what the cognitive system can accommodate to thereby hindering performance. We use a real world dual-task application to highlight the apparent differences in strategy and ability across individuals and alternative task environments.

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