PMID: 12770062May 29, 2003Paper

The control of the proventriculus in the honeybee (Apis mellifera carnica L.) II. Feedback mechanisms

Journal of Insect Physiology
J Blatt, F Roces

Abstract

The mechanisms underlying the control of solution transport rates through the proventriculus in foraging honeybees were investigated in individuals trained to collect defined amounts of sugar solutions. Following feeding, bees were injected either with metabolisable (glucose, fructose, trehalose), or non-metabolisable (sorbose) sugars, in order to distinguish between haemolymph osmolarity and haemolymph sugar levels as factors controlling the solution transport rates through the proventriculus. After a fixed period, workers were dissected in order to measure crop content and haemolymph sugar titers. Between feeding and dissection, the metabolic rate of every investigated forager was measured using open-flow respirometry. Bees injected with metabolisable sugars 15 min after feeding were observed to reduce their solution transport rates through the proventriculus, but injection of non-metabolisable sugars had no influence on them. This suggests that the solution transport rate through the proventriculus is controlled by the concentration of metabolisable compounds in the haemolymph, and not by the haemolymph osmolarity. A period of 10 min after injection of metabolisable sugars was enough to observe reduced solution transport rat...Continue Reading

References

May 29, 2003·Journal of Insect Physiology·F Roces, J Blatt
Aug 1, 1979·Oecologia·Alan B BoltenIrene Baker

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Citations

Sep 28, 2007·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·Pablo E Schilman, Flavio Roces
Sep 7, 2011·Journal of Insect Physiology·Agustina FalibeneRoxana Josens
Jul 26, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Tianchen MaWei Cao
Jan 1, 2012·Insects·Naïla EvenAndrew B Barron
Jan 27, 2015·The Journal of Experimental Biology·Daniel StablerGeraldine A Wright

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