Changes in the size of cephalic salivary glands of Apis mellifera and Scaptotrigona postica (Hymenoptera: Apidae) queens and workers in different life phases

Poiani, Silvana Beani; Cruz-Landim, Carminda da

doi:10.1590/s1984-46702010000600018

Cited by 5 publications

(1 citation statement)

References 11 publications

(7 reference statements)

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“…The two glands are connected to a common duct that opens in the mouthparts (Katzav-Gozansky et al, 2001). The thoracic and cephalic salivary glands produce different types of secretions and have different functions, even though they have a common embryonic origin and excretory duct (Poiani & Cruz-Landim, 2010). Correspondence: Adel M. Mazeed, Cairo University Street, Giza 11613, Egypt.…”

Section: Introductionmentioning

confidence: 99%

Activity of salivary glands in secreting honey‐elaborating enzymes in two subspecies of honeybee (Apis melliferaL)

Al-Sherif¹,

Mazeed

Ewis

et al. 2017

Physiol. Entomol

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The activity of invertase, glucose oxidase and amylase in the cephalic (post‐cerebral) and thoracic salivary glands is determined in Egyptian and Carniolan honeybees (Apis mellifera L). For this purpose, three ages of worker bees are selected for enzyme assays. The results show that the three target enzymes are detected in the two glands during the three worker ages, except invertase, which cannot be detected in the cephalic gland of newly emerged bees of both subspecies. In both glands, the secretion of invertase is highest, followed by amylase and then glucose oxidase. In Carniolan bees, invertase secretion of the cephalic and thoracic glands increases gradually with age. In Egyptian bees, invertase increases with age only in the cephalic gland, whereas, in the thoracic gland, the highest secretion activity is detected in 10–15‐day‐old bees. The highest amounts of glucose oxidase and amylase in the cephalic gland are detected in newly emerged individuals of both Egyptian and Carniolan bees. In the thoracic gland, however, the highest activity of both enzymes is recorded only in newly emerged Egyptian bees. The results are discussed in the light of bee management and biological aspects of the two subspecies.

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Section: Introductionmentioning

confidence: 99%

Activity of salivary glands in secreting honey‐elaborating enzymes in two subspecies of honeybee (Apis melliferaL)

Al-Sherif¹,

Mazeed

Ewis

et al. 2017

Physiol. Entomol

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The Effect of Caste and Reproductive State on the Chemistry of the Cephalic Labial Glands Secretion of Bombus Terrestris

et al. 2014

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The cephalic labial glands are well developed in many bee species. In bumble bee males, they cover most of the head volume, and their secretion is used in marking reproductive territories and attracting virgin queens. In females, however, they are poorly studied. Here, we present chemical analyses of their secretion in queens and workers of Bombus terrestris under various social conditions. The secretion revealed a context-dependent composition with sterile females possessing large amounts of fatty acid dodecyl esters, ranging from dodecyl hexanoate to dodecyl oleate, compared to small amounts in fertile females. Significant reduction in the dodecyl esters also was found in queens at the competition phase, where worker reproduction, aggression, and gyne differentiation occur. The exclusive production of esters by sterile individuals also is typical of Dufour's gland secretion in this species, albeit in this case these are octyl rather than dodecyl esters, and the differences between sterile and fertile individuals are qualitative rather than quantitative. We propose that the labial gland esters provide yet another signal of reproductive inactivity. In virgin queens, it may signal that egg laying is deferred to the next season, while in workers it reinforces the message "I am sterile and out of the reproductive competition". Whether the reduction in dodecyl esters in fertile queens as a function of colony social development is involved in regulating gyne production and the onset of the competition phase is yet to be deciphered.

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Novel aspects of understanding molecular working mechanisms of salivary glands of worker honeybees (Apis mellifera) investigated by proteomics and phosphoproteomics

Mao

Han

et al. 2013

Journal of Proteomics

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This study comprehensively analyses the characteristic of the proteome and phosphoproteome of honeybee salivary glands (SGs) between normal and single-cohort honeybee colonies. The SGs need a wide spectrum of proteins to support their multifaceted functions and ensure normal social management of the colony. The cephalic SG triggers labor transition from in-hive work to foraging behavior via the regulation of juvenile hormone and ethyl oleate titer. The thoracic SG stronger expressed of proteins related to carbohydrate and energy metabolism, protein folding, protein metabolism, cellular homeostasis and cytoskeleton to support the gland to efficiently enhance honey processing by synthesis and secretion of saliva into nectar. This data reveals the molecular underpinning of SGs to accomplish their biological missions and provides new knowledge for the beekeeping industry for enhancing the maintenance and production efficiency of the colony and honey quality through manipulation of potential target proteins.

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Changes in the size of cephalic salivary glands of Apis mellifera and Scaptotrigona postica (Hymenoptera: Apidae) queens and workers in different life phases

Cited by 5 publications

References 11 publications

Activity of salivary glands in secreting honey‐elaborating enzymes in two subspecies of honeybee (Apis melliferaL)

Activity of salivary glands in secreting honey‐elaborating enzymes in two subspecies of honeybee (Apis melliferaL)

The Effect of Caste and Reproductive State on the Chemistry of the Cephalic Labial Glands Secretion of Bombus Terrestris

Novel aspects of understanding molecular working mechanisms of salivary glands of worker honeybees (Apis mellifera) investigated by proteomics and phosphoproteomics

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