Dosages Individuels Des Acides Céto — 9 Décène — 2 Oïque Et Hydroxy - 10 Décène — 2 Oïque Dans Les Têtes Des Reines Et Des Ouvrières d'ABEILLES

Pain, Janine; Barbier, M; Röger, B.

doi:10.1051/apido:19670105

Cited by 22 publications

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“…From chemical analyses of the queen secretion it is known that it is a complex blend, made up of a large number of components (Callow et al, 1964;Boch et al, 1979;Slessor et al, 1988), fluctuating according to the individuals (Pain et al, 1967), their genetic origin (Crewe, 1982), their physiological stage — virgin or mated — (Crewe and Velthuis, 1980;Slessor et al, 1990), and their age (Crewe, 1982;Slessor et al, 1990). It has been shown that the pheromonal blend includes a volatile fraction that might partially or completely elicit worker bee responses (Pain, 1961).…”

Section: Introductionmentioning

confidence: 99%

Effect of queen pheromone on worker bees of different ages: behavioural and electrophysiological responses

et al. 1993

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Summary — The attraction responses of differently aged worker bees to queen pheromonal blends were studied in a 4-field airflow olfactometer. The effects of the nature of the queen signal — either the synthetic mixture shown to be behaviorally active by Slessor et al (1988), or a queen-head extract -, and the rearing conditions were investigated. The composition of the queen-head extract with respect to the constituents of the synthetic blend was chemically analyzed, and differences in amounts of components were discussed. Olfactory-based behavioral responses were elicited by both pheromonal signals; the queen-head extract induced higher responses than the synthetic mixture, the youngest bees of < 5 d old being the most responsive. Similar responses were found in queenless caged bees and in bees reared in a hive, suggesting that attraction to the queen was probably not influenced by prior experience, at least when deprivation to the queen signal occurred after emergence. Electroantennogram responses to the queen signals were recorded concurrently. Olfactory sensitivity was higher to the queen-head extract than to the synthetic pheromone, and was not age-dependent for the age groups tested. No correlation between the maturation of antennal responses and the maturation of behavioral responses was found.Apis mellifera ligustica / queen pheromone / age effect / retinue behavior / olfactory sensitivity / olfactometer

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Section: Introductionmentioning

confidence: 99%

Effect of queen pheromone on worker bees of different ages: behavioural and electrophysiological responses

et al. 1993

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“…In queens, CO 2 positively affects the ovary function, promoting vitellogenesis even without fertilisation, and CO 2 also accelerates the start of egg laying after the nuptial fl ight (Mackensen, 1947;Berger et al, 2005) as a result of the aging effect. Nevertheless, Pain et al (1967) and Skowronek (1979) verifi ed that although treated queens present precocious ovary development they eventually lose ovary effi ciency in comparison with non-treated queens of the same age. The effects of CO 2 narcosis on the various systems of the workers and queens show that the gas promotes an advance in individual maturity or aging.…”

Section: Discussionmentioning

confidence: 99%

Ovary Development in Honeybee (Apis Mellifera L.) Workers Under Co₂ Narcosis, Caged Outside of the Colony

Berger

Poiani

Roat

et al. 2015

Journal of Apicultural Science

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A b s t r a c t Exposure of A. mellifera workers to CO 2 has been reported to decrease life span, induce behavioral changes, and inhibit the development of some glands and the ovaries. However, the use of CO 2 is currently practiced among beekeepers and how the development of workers' ovaries are affected is unknown. The present work aimed to evaluate the effect of CO 2 on the ovaries of A. mellifera workers, using a morphological approach. Newly emerged, and 3, 5, and 10-day-old workers were exposed to saturated CO 2 for 30 seconds, more than once. The ovaries were examined under light (LM) and transmission electron microscopy (TEM). The ovaries of narcotized, 5-day-old workers exhibited long ovarioles with well-developed germarium, although oogenesis showed little development. While in the control group, the ovaries already exhibited cysts with cystocytes forming rosettes. At 10-days-old, the ovaries feature was variable; some of the ovaries showed ovarioles with many rosette cysts while others showed a high intensity of disorganization due to the beginning of cell death. The ovarioles of the ovaries of 15-day-old treated workers were morphologically varied as oogenesis showed little or no advance. In others cases, a complete disorganization with swollen cells and cell death features were observed. Germ cells of the ovaries of CO 2 -treated workers exhibited well-structured organelles, such as the Golgi complex, and larger amounts of mitochondria in the cytoplasm than the control group, but there was disorganization of the endoplasmic reticulum membranes. Our fi ndings revealed that the exposure of workers to CO 2 promotes impairment of oogenesis and ovarian degradation.

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“…Mating induces additional changes to the signal bouquet with increases in the aromatic compounds and the appearance of 4-hydroxy-3-methoxyphenylethanol (HVA) Pankiw et al, 1996). The progressive change in mandibular gland secretions with age is evident in A. m. scutellata, A. m. mellifera and A. m. intermissa virgin queens but not A. m. capensis queens (Pain et al, 1960(Pain et al, , 1967Pain and Roger, 1976;Crewe, 1988;Crewe and Moritz, 1989) which produce large amounts of 9ODA at emergence ( Fig. 2; Tab.…”

Section: Queensmentioning

confidence: 99%

Pheromone mimicry by Apis mellifera capensis social parasites leads to reproductive anarchy in host Apis mellifera scutellata colonies

Wossler

2002

Apidologie

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-Queen mandibular, tergal, tarsal and Dufour's gland secretions, as well as brood pheromones regulate worker reproduction in honeybees. In South Africa two contiguous populations of honeybees exist, Apis mellifera capensis and A. m. scutellata. Queenless A. m. capensis workers are reproductively distinct from workers of other races, in that they readily develop into pseudoqueens with rapid ovary and signal development. A. m. capensis queens are pheromonally competent in regulating reproduction in the resident workers. Recently however Cape honeybee workers have successfully invaded queenright A. m. scutellata colonies and simultaneously escaped reproductive suppression from the resident queen and brood. These "social parasites" rapidly develop into reproductives, lay acceptable eggs and mimic a series of queen pheromones. This pheromone mimicry by invading A. m. capensis workers causes a breakdown in reproductive regulation, resulting in reproductive anarchy.Apis mellifera / worker reproduction / caste plasticity / pheromones / social parasite

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Dosages Individuels Des Acides Céto — 9 Décène — 2 Oïque Et Hydroxy - 10 Décène — 2 Oïque Dans Les Têtes Des Reines Et Des Ouvrières d'ABEILLES

Cited by 22 publications

References 0 publications

Effect of queen pheromone on worker bees of different ages: behavioural and electrophysiological responses

Effect of queen pheromone on worker bees of different ages: behavioural and electrophysiological responses

Ovary Development in Honeybee (Apis Mellifera L.) Workers Under Co₂ Narcosis, Caged Outside of the Colony

Pheromone mimicry by Apis mellifera capensis social parasites leads to reproductive anarchy in host Apis mellifera scutellata colonies

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Dosages Individuels Des Acides Céto — 9 Décène — 2 Oïque Et Hydroxy - 10 Décène — 2 Oïque Dans Les Têtes Des Reines Et Des Ouvrières d'ABEILLES

Cited by 22 publications

References 0 publications

Effect of queen pheromone on worker bees of different ages: behavioural and electrophysiological responses

Effect of queen pheromone on worker bees of different ages: behavioural and electrophysiological responses

Ovary Development in Honeybee (Apis Mellifera L.) Workers Under Co2 Narcosis, Caged Outside of the Colony

Pheromone mimicry by Apis mellifera capensis social parasites leads to reproductive anarchy in host Apis mellifera scutellata colonies

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Product

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Ovary Development in Honeybee (Apis Mellifera L.) Workers Under Co₂ Narcosis, Caged Outside of the Colony