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Keywords: vitellogenin
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Journal Articles
J Exp Biol (2012) 215 (11): 1837–1846.
Published: 1 June 2012
...Heli Havukainen; Jarl Underhaug; Florian Wolschin; Gro Amdam; Øyvind Halskau SUMMARY Vitellogenin (Vg) is an egg-yolk precursor protein in most oviparous species. In honeybee ( Apis mellifera ), the protein (AmVg) also affects social behavior and life-span plasticity. Despite its manifold functions...
Includes: Supplementary data
Journal Articles
J Exp Biol (2012) 215 (8): 1313–1322.
Published: 15 April 2012
... expressed in the absence of significant amounts of vitellogenin. We conclude that drones – like worker bees – have the potential to activate multiple elements of the innate immune response. The differential expression of major haemolymph proteins in drone larvae and adult drones (Figs 1 , 3...
Includes: Supplementary data
Journal Articles
J Exp Biol (2011) 214 (9): 1488–1497.
Published: 1 May 2011
... by secreting the yolk protein precursor vitellogenin (Vg), which suppresses lipophilic juvenile hormone and social foraging behavior. In a two-factorial experiment, we used RNA interference (RNAi)-mediated vg gene knockdown and amino acid nutrient enrichment of hemolymph (blood) to perturb this regulatory...
Includes: Supplementary data
Journal Articles
J Exp Biol (2011) 214 (4): 582–592.
Published: 15 February 2011
...Heli Havukainen; Øyvind Halskau; Lars Skjaerven; Bente Smedal; Gro V. Amdam SUMMARY Vitellogenin, an egg-yolk protein precursor common to oviparous animals, is found abundantly in honeybee workers – a caste of helpers that do not usually lay eggs. Instead, honeybee vitellogenin (180 kDa...
Includes: Supplementary data
Journal Articles
J Exp Biol (2009) 212 (23): 3795–3801.
Published: 1 December 2009
... sisters (brood), workers survive for 3-6 weeks. When brood rearing declines, worker lifespan is 20 weeks or longer. Insects can survive unfavorable periods on endogenous stores of protein and lipid. The glyco-lipoprotein vitellogenin extends worker bee lifespan by functioning in free radical defense...
Includes: Supplementary data
Journal Articles
J Exp Biol (2003) 206 (24): 4443–4451.
Published: 15 December 2003
...) and that the maintenance and activity costs of the oviduct are responsible for 18% of the variation in elevated laying RMR. Therefore, other energy-consuming physiological mechanisms must be responsible for the remaining unexplained variation in elevated laying RMR. Yolk precursor[vitellogenin (VTG) and very-low-density...
Journal Articles
J Exp Biol (2002) 205 (21): 3367–3376.
Published: 1 November 2002
... protein. E 2 also increased concentrations of zinc in the plasma. The changes in zinc concentration in the bloodstream followed the same time course as vitellogenin(VTG) transport from the liver. However, the high ratio of molar concentrations of zinc to VTG in the bloodstream suggest that VTG may...