scholarly journals Personality in social insects: How does worker personality determine colony personality?

2012 ◽  
Vol 58 (4) ◽  
pp. 580-588 ◽  
Author(s):  
Noa Pinter-Wollman
Keyword(s):  
Individual Differences ◽  
Natural Selection ◽  
Social Insects ◽  
Individual Variation ◽  
Social Insect ◽  
External Constraints ◽  
Insect Colonies ◽  
Reproductive Unit ◽  
Shed Light

Abstract Social insect colonies and the workers comprising them, each exhibit consistent individual differences in behavior, also known as ‘personalities’. Because the behavior of social insect colonies emerges from the actions of their workers, individual variation among workers’ personality may be important in determining the variation we observe among colonies. The reproductive unit of social insects, on which natural selection acts, is the colony, not individual workers. Therefore, it is important to understand what mechanisms govern the observed variation among colonies. Here I propose three hypotheses that address how consistent individual differences in the behavior of workers may lead to consistent individual differences in the behavior of colonies: 1. Colonies differ consistently in their average of worker personality; 2. The distribution but not the average of worker personalities varies consistently among colonies; and 3. Colony personality does not emerge from its worker personality composition but from consistent external constraints. I review evidence supporting each of these hypotheses and suggest methods to further investigate them. The study of how colony personality emerges from the personalities of the workers comprising them may shed light on the mechanisms underlying consistent individual differences in the behavior of other animals.

Individual differences: Variation by design

2000 ◽  
Vol 23 (5) ◽  
pp. 676-677 ◽  
Author(s):  
Anthony J. Greene ◽  
William B. Levy
Keyword(s):  
Genetic Diversity ◽  
Genetic Variation ◽  
Individual Differences ◽  
Natural Selection ◽  
Individual Variation ◽  
Mate Selection ◽  
Behavioral Variability ◽  
Behavioral Variation ◽  
Absolute Necessity

Stanovich & West (S&W) appear to overlook the adaptivity of variation. Behavioral variability, both between and within individuals, is an absolute necessity for phylogenetic and ontological adaptation. As with all heritable characteristics, inter-individual behavioral variation is the foundation for natural selection. Similarly, intra-individual variation allows a broad exploration of potential solutions. Variation increases the likelihood that more optimal behaviors are available for selection. Four examples of the adaptivity of variation are discussed: (a) Genetic variation as it pertains to behavior and natural selection; (b) behavioral and cognitive aspects of mate selection which may facilitate genetic diversity; (c) variation as a strategy for optimizing learning through greater exploration; and (d) behavioral variation coupled with communication as a means to propagate individually discovered behavioral success.

Individual Differences in Language Processing: Phonology

2019 ◽  
Vol 5 (1) ◽  
pp. 131-150 ◽  
Author(s):  
Alan C.L. Yu ◽  
Georgia Zellou
Keyword(s):  
Individual Differences ◽  
Language Processing ◽  
Individual Variation ◽  
Phonological Processing ◽  
Phonological Information ◽  
Linguistic Processing ◽  
Cognitive Representations ◽  
Linguistic Representations ◽  
Insight Into ◽  
Shed Light

Individual variation is ubiquitous and empirically observable in most phonological behaviors, yet relatively few studies aim to capture the heterogeneity of language processing among individuals, as opposed to those focusing primarily on group-level patterns. The study of individual differences can shed light on the nature of the cognitive representations and mechanisms involved in phonological processing. To guide our review of individual variation in the processing of phonological information, we consider studies that can illuminate broader issues in the field, such as the nature of linguistic representations and processes. We also consider how the study of individual differences can provide insight into long-standing issues in linguistic variation and change. Since linguistic communities are made up of individuals, the questions raised by examining individual differences in linguistic processing are relevant to those who study all aspects of language.

scholarly journals The repeatability of variability: exploring intra- and inter-individual variation in seasonality

2016 ◽  
Author(s):  
Kevin D Matson ◽  
Maaike A Versteegh ◽  
B Irene Tieleman
Keyword(s):  
Individual Differences ◽  
Natural Selection ◽  
Immune Function ◽  
Individual Variation ◽  
Preliminary Analysis ◽  
Animal Experimentation ◽  
The Body ◽  
Statistical Techniques ◽  
Seasonal Cycles ◽  
Behavioral Traits

Animals exhibit seasonal cycles in a variety of physiological and behavioral traits. Studies of these cycles can potentially offer new insights into the evolution of individual differences. For natural selection to act, a trait must be both distinctive within individuals and variable among individuals. The extent to which the amplitude and phase of seasonal cycles fulfill these requirements is not well documented. As a preliminary analysis, we investigated seasonal cycles in the body mass of pigeons, which we weighed quarterly over a period of six years. [Our work with these animals complied with all applicable institutional regulations (University of Groningen Animal Experimentation Committee, license no. 5095) and Dutch and European laws.] We employed several of statistical techniques aimed at 1) quantifying the repeatability of seasonality and 2) comparing within- and among-individual variation in seasonality. Our goal is to take what we have learned from our analyses of mass and apply it to other seasonally variable physiological traits, including variables related to immune function.

scholarly journals Kin-informative recognition cues in ants

2010 ◽  
Vol 278 (1714) ◽  
pp. 1942-1948 ◽  
Author(s):  
Volker Nehring ◽  
Sophie E. F. Evison ◽  
Lorenzo A. Santorelli ◽  
Patrizia d'Ettorre ◽  
William O. H. Hughes
Keyword(s):  
Theoretical Prediction ◽  
Cuticular Hydrocarbons ◽  
Social Insects ◽  
Social Insect ◽  
Social Groups ◽  
High Accuracy ◽  
Acromyrmex Octospinosus ◽  
Insect Colonies ◽  
Group Members ◽  
Colony Level

Although social groups are characterized by cooperation, they are also often the scene of conflict. In non-clonal systems, the reproductive interests of group members will differ and individuals may benefit by exploiting the cooperative efforts of other group members. However, such selfish behaviour is thought to be rare in one of the classic examples of cooperation—social insect colonies—because the colony-level costs of individual selfishness select against cues that would allow workers to recognize their closest relatives. In accord with this, previous studies of wasps and ants have found little or no kin information in recognition cues. Here, we test the hypothesis that social insects do not have kin-informative recognition cues by investigating the recognition cues and relatedness of workers from four colonies of the ant Acromyrmex octospinosus . Contrary to the theoretical prediction, we show that the cuticular hydrocarbons of ant workers in all four colonies are informative enough to allow full-sisters to be distinguished from half-sisters with a high accuracy. These results contradict the hypothesis of non-heritable recognition cues and suggest that there is more potential for within-colony conflicts in genetically diverse societies than previously thought.

scholarly journals The repeatability of variability: exploring intra- and inter-individual variation in seasonality

2016 ◽  
Author(s):  
Kevin D Matson ◽  
Maaike A Versteegh ◽  
B Irene Tieleman
Keyword(s):  
Individual Differences ◽  
Natural Selection ◽  
Immune Function ◽  
Individual Variation ◽  
Preliminary Analysis ◽  
Animal Experimentation ◽  
The Body ◽  
Statistical Techniques ◽  
Seasonal Cycles ◽  
Behavioral Traits

Animals exhibit seasonal cycles in a variety of physiological and behavioral traits. Studies of these cycles can potentially offer new insights into the evolution of individual differences. For natural selection to act, a trait must be both distinctive within individuals and variable among individuals. The extent to which the amplitude and phase of seasonal cycles fulfill these requirements is not well documented. As a preliminary analysis, we investigated seasonal cycles in the body mass of pigeons, which we weighed quarterly over a period of six years. [Our work with these animals complied with all applicable institutional regulations (University of Groningen Animal Experimentation Committee, license no. 5095) and Dutch and European laws.] We employed several of statistical techniques aimed at 1) quantifying the repeatability of seasonality and 2) comparing within- and among-individual variation in seasonality. Our goal is to take what we have learned from our analyses of mass and apply it to other seasonally variable physiological traits, including variables related to immune function.

The challenge of accounting for individual differences in folk-economic beliefs

2018 ◽  
Vol 41 ◽  
Author(s):  
Benjamin C. Ruisch ◽  
Rajen A. Anderson ◽  
David A. Pizarro
Keyword(s):  
Individual Differences ◽  
Individual Variation ◽  
Political Ideologies ◽  
Economic Beliefs ◽  
Existing Data

AbstractWe argue that existing data on folk-economic beliefs (FEBs) present challenges to Boyer & Petersen's model. Specifically, the widespread individual variation in endorsement of FEBs casts doubt on the claim that humans are evolutionarily predisposed towards particular economic beliefs. Additionally, the authors' model cannot account for the systematic covariance between certain FEBs, such as those observed in distinct political ideologies.

Inter-individual variation shapes the human microbiome

2019 ◽  
Vol 42 ◽  
Author(s):  
Emily F. Wissel ◽  
Leigh K. Smith
Keyword(s):  
Individual Differences ◽  
Individual Variation ◽  
Human Microbiome ◽  
Individual Variability ◽  
Microbiota Composition ◽  
Target Article ◽  
Microbiome Research

Abstract The target article suggests inter-individual variability is a weakness of microbiota-gut-brain (MGB) research, but we discuss why it is actually a strength. We comment on how accounting for individual differences can help researchers systematically understand the observed variance in microbiota composition, interpret null findings, and potentially improve the efficacy of therapeutic treatments in future clinical microbiome research.

scholarly journals Transcriptomic analyses of the termite, Cryptotermes secundus, reveal a gene network underlying a long lifespan and high fecundity

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Silu Lin ◽  
Jana Werle ◽  
Judith Korb
Keyword(s):  
Life History ◽  
Social Insects ◽  
Social Communication ◽  
Gene Network ◽  
Social Insect ◽  
Nutrient Sensing ◽  
Model Organisms ◽  
Termite Species ◽  
High Fecundity ◽  
Trade Off

AbstractOrganisms are typically characterized by a trade-off between fecundity and longevity. Notable exceptions are social insects. In insect colonies, the reproducing caste (queens) outlive their non-reproducing nestmate workers by orders of magnitude and realize fecundities and lifespans unparalleled among insects. How this is achieved is not understood. Here, we identified a single module of co-expressed genes that characterized queens in the termite species Cryptotermes secundus. It encompassed genes from all essential pathways known to be involved in life-history regulation in solitary model organisms. By manipulating its endocrine component, we tested the recent hypothesis that re-wiring along the nutrient-sensing/endocrine/fecundity axis can account for the reversal of the fecundity/longevity trade-off in social insect queens. Our data from termites do not support this hypothesis. However, they revealed striking links to social communication that offer new avenues to understand the re-modelling of the fecundity/longevity trade-off in social insects.

Scaling of work and energy use in social insect colonies

2016 ◽  
Vol 70 (7) ◽  
pp. 1047-1061 ◽  
Author(s):  
Jennifer H. Fewell ◽  
Jon F. Harrison
Keyword(s):  
Social Insect ◽  
Energy Use ◽  
Insect Colonies ◽  
Work And Energy

scholarly journals Using a robotic fish to investigate individual differences in social responsiveness in the guppy

2018 ◽  
Vol 5 (8) ◽  
pp. 181026 ◽  
Author(s):  
David Bierbach ◽  
Tim Landgraf ◽  
Pawel Romanczuk ◽  
Juliane Lukas ◽  
Hai Nguyen ◽  
...  
Keyword(s):  
Individual Differences ◽  
Individual Variation ◽  
Poecilia Reticulata ◽  
Open Loop ◽  
Social Cues ◽  
Social Responsiveness ◽  
Small Fish ◽  
Repeated Testing ◽  
Test Environment ◽  
Biomimetic Robots

Responding towards the actions of others is one of the most important behavioural traits whenever animals of the same species interact. Mutual influences among interacting individuals may modulate the social responsiveness seen and thus make it often difficult to study the level and individual variation in responsiveness. Here, open-loop biomimetic robots that provide standardized, non-interactive social cues can be a useful tool. These robots are not affected by the live animal's actions but are assumed to still represent valuable and biologically relevant social cues. As this assumption is crucial for the use of biomimetic robots in behavioural studies, we hypothesized (i) that meaningful social interactions can be assumed if live animals maintain individual differences in responsiveness when interacting with both a biomimetic robot and a live partner. Furthermore, to study the level of individual variation in social responsiveness, we hypothesized (ii) that individual differences should be maintained over the course of multiple tests with the robot. We investigated the response of live guppies ( Poecilia reticulata ) when allowed to interact either with a biomimetic open-loop-controlled fish robot—‘Robofish’—or with a live companion. Furthermore, we investigated the responses of live guppies when tested three times with Robofish. We found that responses of live guppies towards Robofish were weaker compared with those of a live companion, most likely as a result of the non-interactive open-loop behaviour of Robofish. Guppies, however, were consistent in their individual responses between a live companion and Robofish, and similar individual differences in response towards Robofish were maintained over repeated testing even though habituation to the test environment was detectable. Biomimetic robots like Robofish are therefore a useful tool for the study of social responsiveness in guppies and possibly other small fish species.

Sign in / Sign up

Export Citation Format

Share Document