Juvenile hormone and aggression in honey bees

Pearce, Alison N; Zhi, Huang; Breed, Michael D.

doi:10.1016/s0022-1910(01)00109-3

Cited by 63 publications

(51 citation statements)

References 27 publications

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“…For example, grouplevel behavior can change as group size increases-a trend observed across eusocial taxa (Dornhaus et al, 2012). In honeybees, even though some colonies are consistently more aggressive than others (Pearce et al, 2001;Hunt, 2007), aggression levels increase with colony size , and/or when resources become scarce (Downs and Ratnieks, 2000). This trend of increased aggression with colony size or state of maturation FIGURE 2 | Development of collective personalities.…”

Section: Group Maturationmentioning

confidence: 98%

“…These changes can be brought on by abiotic (e.g., light or temperature), developmental (e.g., changes in hormone titers during development), or social factors (e.g., pheromone exposure, interactions with other insects). Furthermore, in honey bees, where colonies can vary quite dramatically in aggressive personalities (Pearce et al, 2001), exposing an individual to an alarm pheromone can result in the up-regulation of several genes involved in biogenic amine signaling (similar to that observed in vertebrates, Nelson and Chiavegatto, 2001), which in turn results in increased aggression or defensive behavior exhibited by the individual (Alaux et al, 2009). In both of these examples, changes among individuals can lead to changes in the social regulation, and thus possibly the personality, of the colony (Page et al, 2012).…”

Section: Genetic Make-up Of the Groupmentioning

confidence: 99%

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The development of collective personality: the ontogenetic drivers of behavioral variation across groups

2014

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For the past decade, the study of personality has become a topic on the frontier of behavioral ecology. However, most studies have focused on exploring inter-individual behavioral variation in solitary animals, and few account for the role that social interactions may have on the development of an individual's personality. Moreover, a social group may exhibit collective personality: an emergent behavioral phenotype displayed at the group-level, which is not necessarily the sum or average of individual personalities within that group. The social environment, in many cases, can determine group success, which then influences the relative success of all the individuals in that group. In addition, group-level personality may itself evolve, subject to the same selection pressures as individual-level behavioral variation, when the group is a unit under selection. Therefore, we reason that understanding how collective personalities emerge and change over time will be imperative to understanding individual-and group-level behavioral evolution. Personality is considered to be fixed over an individual's lifetime. However, behavior may shift throughout development, particularly during adolescence. Therefore, juvenile behavior should not be compared with adult behavior when assessing personality. Similarly, as conditions within a group and/or the local environment can shift, group behavior may similarly fluctuate as it matures. We discuss potential within-group factors, such as group initiation, group maturation, genetic make-up of the group, and the internal social environment, and external factors, such as how local environment may play a role in generating group-level personalities. There are a variety of studies that explore group development or quantify group personality, but few that integrate both processes. Therefore, we conclude our review by discussing potential ways to evaluate development of collective personality, and propose several focal areas for future research.

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Section: Group Maturationmentioning

confidence: 98%

Section: Genetic Make-up Of the Groupmentioning

confidence: 99%

The development of collective personality: the ontogenetic drivers of behavioral variation across groups

2014

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“…The probability of launching such attacks is stage dependent, and nurse bees and diutinus workers are less hostile than bees that typically work in the periphery of the nest (Pearce et al, 2001). The victim is usually a worker in poor condition, one with developed ovaries (a "laying worker") or one that has lost her way while foraging and entered a colony that is not her own (Pearce et al, 2001;Ratnieks, 1988;Winston, 1987). Such individuals are most likely singled out based on deviations in the hydrocarbon blend of their cuticle (Dani et al, 2005).…”

Section: Stinging "Coating" and Eviction Of Adults-workermentioning

confidence: 99%

Order, Disorder, Death: Lessons from a Superorganism

Amdam¹,

Seehuus²

2006

Advances in Cancer Research

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Animal models contribute to the understanding of molecular mechanism of cancer, revealing complex roles of altered cellular-signaling networks and deficient surveillance systems. Analogous pathologies are documented in an unconventional model organism that receives attention in research on systems theory, evolution, and aging. The honeybee (Apis mellifera) colony is an advanced integrative unit, a "superorganism" in which order is controlled via complex signaling cascades and surveillance schemes. A facultatively sterile caste, the workers, regulates patterns of growth, differentiation, homeostasis, and death. Workers differentiate into temporal phenotypes in response to dynamic social cues; chemosensory signals that can translate into dramatic physiological responses, including programmed cell death. Temporal worker forms function together, and effectively identify and terminate abnormal colony members ranging from embryos to adults. As long as this regulatory system is operational at a colony level, the unit survives and propagates. However, if the worker phenotypes that collectively govern order become too few or change into malignant forms that bypass control mechanisms to replicate aberrantly; order is replaced by disorder that ultimately leads to the destruction of the society. In this chapter we describe fundamental properties of honeybee social organization, and explore conditions that lead to states of disorder. Our hope is that this chapter will be an inspirational source for ongoing and future work in the field of cancer research.

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“…JH has been known to be involved in the queen-worker caste differentiation during the larval stage , in regulating the age-related division of labor in adult workers (reviewed by Robinson, 1992), and in determining aggression levels in workers (Pearce et al, 2001). As one of the most important hormones in insects, JH is therefore very well studied.…”

Section: Introductionmentioning

confidence: 99%

Short-term changes in juvenile hormone titers in honey bee workers due to stress

2004

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-Juvenile hormone (JH) is well studied in honey bees because it regulates caste determination in immatures and division of labor in adult workers. However it is not clear whether JH titers change significantly under stresses commonly experienced by workers in experimental manipulations. In this study we determined the effect of caging and cold-anaesthesia on JH titers in both nurses and foragers. The JH titers of nurses and foragers kept in cages at room temperature, or anaesthetized on ice, for up to 24 hours were determined at various time intervals. Nurses displayed a significant and sustained increase in JH titers by 1-2 hours in 2 out of 3 colonies, regardless whether being cold-anaesthetized or caged. Nurses in 4 out of 4 colonies showed remarkable JH titer elevations 24 hours after being caged. The increase ranged from 3-142 fold compared to their initial baseline JH titers. In foragers, changes in JH titers depended on their initial JH titers: foragers with low JH titers increased while those with high JH titers decreased. These results suggest that nurses and foragers respond to stress differently. The fact that JH did not always increase under stress conditions suggests that JH apparently does not function as a "stress-hormone" in honey bees under the two conditions we studied. Apis mellifera / juvenile hormone / radioimmunoassay / stressAbbreviations: JH Juvenile hormone; RIA radioimmunoassay; CA corpora allata

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Juvenile hormone and aggression in honey bees

Cited by 63 publications

References 27 publications

The development of collective personality: the ontogenetic drivers of behavioral variation across groups

The development of collective personality: the ontogenetic drivers of behavioral variation across groups

Order, Disorder, Death: Lessons from a Superorganism

Short-term changes in juvenile hormone titers in honey bee workers due to stress

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