... induce an increase of small synapses in the lamina, and daily and circadian rhythms of ... Th... more ... induce an increase of small synapses in the lamina, and daily and circadian rhythms of ... The role of behavioral changes on the honeybee brain plasticity has been recently emphasized ... Briefly, this paired structure, located in the protocerebrum, consists of densely packed intrinsic ...
The distribution of putative RDL-like GABA receptors and of gamma-aminobutyric acid (GABA) in the... more The distribution of putative RDL-like GABA receptors and of gamma-aminobutyric acid (GABA) in the brain of the adult house cricket Acheta domesticus was studied using specific antisera. Special attention was given to brain structures known to be related to learning and memory. The main immunostaining for the RDL-like GABA receptor was observed in mushroom bodies, in particular the upper part of mushroom body peduncle and the two arms of the posterior calyx. Weaker immunostaining was detected in the distal part of the peduncle and in the alpha and beta lobes. The dorso- and ventrolateral protocerebrum neuropils appeared rich in RDL-like GABA receptors. Staining was also detected in the glomeruli of the antennal lobe, as well as in the ellipsoid body of the central complex. Many neurons clustered in groups exhibit GABA-like immunoreactivity. Tracts that were strongly immunostained innervated both the calyces and the lobes of mushroom bodies. The glomeruli of the antennal lobe, the ell...
Behavioral Ecology and Sociobiology - BEHAV ECOL SOCIOBIOL, 1985
The contribution of ovaries and ovarian ecdysteroids to dominance and nest initiation was tested ... more The contribution of ovaries and ovarian ecdysteroids to dominance and nest initiation was tested in foundresses of Polistes gallicus at the end of hibernation. Removal of the ovaries resulted in a significant decrease of the ecdysteroid titre in haemolymph. Dominance in ovariectomized foundresses was found to be closely correlated to the size of corpora allata. The operated wasps started nest building, but they did not show any egg-laying behaviour. We conclude that both juvenile hormone and ovarian ecdysteroids contribute to degree of dominance, and that factors other than ovary development may stimulate building.
... induce an increase of small synapses in the lamina, and daily and circadian rhythms of ... Th... more ... induce an increase of small synapses in the lamina, and daily and circadian rhythms of ... The role of behavioral changes on the honeybee brain plasticity has been recently emphasized ... Briefly, this paired structure, located in the protocerebrum, consists of densely packed intrinsic ...
The distribution of putative RDL-like GABA receptors and of gamma-aminobutyric acid (GABA) in the... more The distribution of putative RDL-like GABA receptors and of gamma-aminobutyric acid (GABA) in the brain of the adult house cricket Acheta domesticus was studied using specific antisera. Special attention was given to brain structures known to be related to learning and memory. The main immunostaining for the RDL-like GABA receptor was observed in mushroom bodies, in particular the upper part of mushroom body peduncle and the two arms of the posterior calyx. Weaker immunostaining was detected in the distal part of the peduncle and in the alpha and beta lobes. The dorso- and ventrolateral protocerebrum neuropils appeared rich in RDL-like GABA receptors. Staining was also detected in the glomeruli of the antennal lobe, as well as in the ellipsoid body of the central complex. Many neurons clustered in groups exhibit GABA-like immunoreactivity. Tracts that were strongly immunostained innervated both the calyces and the lobes of mushroom bodies. The glomeruli of the antennal lobe, the ell...
Behavioral Ecology and Sociobiology - BEHAV ECOL SOCIOBIOL, 1985
The contribution of ovaries and ovarian ecdysteroids to dominance and nest initiation was tested ... more The contribution of ovaries and ovarian ecdysteroids to dominance and nest initiation was tested in foundresses of Polistes gallicus at the end of hibernation. Removal of the ovaries resulted in a significant decrease of the ecdysteroid titre in haemolymph. Dominance in ovariectomized foundresses was found to be closely correlated to the size of corpora allata. The operated wasps started nest building, but they did not show any egg-laying behaviour. We conclude that both juvenile hormone and ovarian ecdysteroids contribute to degree of dominance, and that factors other than ovary development may stimulate building.
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