Changes in weight of the pharyngeal gland and haemolymph titres of juvenile hormone, protein and vitellogenin in worker honey bees

Fluri, Peter; Lüscher, Martin; Wille, Hans; Gerig, L.

doi:10.1016/0022-1910(82)90023-3

Cited by 341 publications

(290 citation statements)

References 17 publications

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“…The dotted line exemplifies the investment in a bee that receives little or no proteinacious jelly after emergence. The dynamics match the relative vitellogenin concentrations of the bees accurately (e.g., Engels and Fahrenhorst, 1974;Fluri et al, 1982;Amdam et al, 2004a).…”

Section: Discussionmentioning

confidence: 91%

“…They are characterized by very high levels of the vitellogenin protein (~100 μg/μl), and high numbers of functional immune cells (8000-10,000 μl −1 ) (Fluri et al, 1982;Amdam et al, 2004b). Diutinus workers as old as 200 days are resistant to paraquat (S. Seehuus, K. Norberg, U. Gimsa, T. Krekling, G.V.…”

Section: Patterns Of Stage-dependent Senescence and Physiological Framentioning

confidence: 99%

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Intergenerational transfers may have decoupled physiological and chronological age in a eusocial insect

Amdam

Page

2005

Ageing Research Reviews

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Life-history theory generally predicts that there should be no selection for longevity beyond the limit of reproductive capacity. However, the capacity to increase fitness may not end when individuals reach a state of functional sterility. Recent studies show that intergenerational transfers of resources from post-reproductive parents can increase the offspring's fitness, and analytical theory shows that age-trajectories of transfers may shape the course of senescence in social organisms. In eusocial insects, female roles are partitioned so that one phenotype or "caste" reproduces while another is responsible for resource transfers: the reproductive "queens" are arrested in a continuous reproductive mode, while transfer-activities such as hygienic behaviors, guarding, foraging and further food processing ("nursing") that increases the nutritional value of provisions are conducted by sterile "workers". Worker honey bees normally perform these tasks in a sequence so that nursing inside the protected nest is conducted prior to more risky exterior hive activities such as guarding and foraging. However, foragers may revert to nurse-activity in response to demographic changes, and worker bees can also develop into a stress resistant survival form with a 10-fold increase in lifespan. This elastic division of parental functions is believed to increase colony fitness. Further, it generates a stage-dependent trajectory of senescence that is difficult to address with established theories of aging. In the following, we show how a recent theory that includes resource transfers can be used to elucidate patterns of senescence in eusocial, non-reproducing individuals like the honey bee worker.

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Section: Discussionmentioning

confidence: 91%

Section: Patterns Of Stage-dependent Senescence and Physiological Framentioning

confidence: 99%

Intergenerational transfers may have decoupled physiological and chronological age in a eusocial insect

Amdam

Page

2005

Ageing Research Reviews

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“…Levels are higher in nurse bees if compared with foragers, and vitellogenin serves as a storage protein that can be used by nurses to produce brood food (Amdam et al, 2003). Additionally, high vitellogenin titers keep juvenile hormone levels low, thereby slowing behavioural maturation to foragers and potentially initiating the production of long-lived winter bees (Doke et al, 2015;Fluri et al, 1982). Previous studies have found that parasitization with Varroa produced workers that accumulate significantly fewer haemolymph proteins, including vitellogenin (Amdam et al, 2004b).…”

Section: Overlap Between the Three Deg Lists And Nurse/forager Genesmentioning

confidence: 99%

Transcriptional signatures of parasitization and markers of colony decline in Varroa-infested honey bees (Apis mellifera)

Zanni

Galbraith

Annoscia

et al. 2017

Insect Biochemistry and Molecular Biology

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“…A diutinus worker is characterized by hypertrophy of the hypopharyngeal glands and the abdominal fat body (Deseyn and Billen, 2005;Koehler, 1921;Maurizio, 1954). She has a high number of circulating hemocytes, an elevated vitellogenin protein level, and a low juvenile hormone titer (Amdam et al, 2004b;Fluri et al, 1977Fluri et al, ,1982. The diutinus stage is described as an oxidative stressresistant survival form similar to the dauer larva of Caenorhabditis elegans (Seehuus et al, 2006).…”

Section: A Differentiation Of Female Formsmentioning

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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Changes in weight of the pharyngeal gland and haemolymph titres of juvenile hormone, protein and vitellogenin in worker honey bees

Cited by 341 publications

References 17 publications

Intergenerational transfers may have decoupled physiological and chronological age in a eusocial insect

Intergenerational transfers may have decoupled physiological and chronological age in a eusocial insect

Transcriptional signatures of parasitization and markers of colony decline in Varroa-infested honey bees (Apis mellifera)

Order, Disorder, Death: Lessons from a Superorganism

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