... of stimulation. To reveal the neuronal mechanisms underlying this defensive behavior, the effect of brain biogenic amines on the responses to tactile stimuli were investigated. The levels of octopamine (OA), dopamine (DA) and serotonin (5HT) in the brain were significantly elevated in ants that responded...

... sucrose and salt (i.e. discrimination learning), and four biogenic amines in the brain. We found that the smaller the group size, the more responsive a worker was to the sucrose reward. Honey bees raised in groups of 32 performed the best in the learning trials and had the highest levels of dopamine. We...

... methods for assessing emotions in humans and other animals, to invertebrates, with intriguing results. This Review interprets and discusses their utility with respect to the evolution and neurobiology of emotion. Affective neuroscience Biogenic amines Cognitive bias Computational modelling...

...Chelsea N. Cook; Colin S. Brent; Michael D. Breed ABSTRACT Biogenic amines regulate the proximate mechanisms underlying most behavior, including those that contribute to the overall success of complex societies. For honey bees, one crucial set of behaviors contributing to the welfare of a colony...

.... Biogenic amines Nurse bee Apis mellifera PER Proboscis extension response Honeybees are famous for their intricate division of labor. Each bee sequentially performs a series of social tasks during its life (for a review, see Johnson, 2010 ). The most pronounced changes in individual behavior...

... reproduce while most remain functionally sterile. Changes in reproduction and behavior in this context must be coordinated through crosstalk between the brain and the reproductive system. We investigated a role for biogenic amines in forming this connection in the ant Harpegnathos saltator . In this species...

... of labour. Biogenic amines and their receptors are important candidates for regulating the division of labour, because they can modulate sensory response thresholds. Here, we investigated the role of the honey bee tyramine receptor AmTYR1 in regulating the division of foraging labour. We report differential...

... © The Company of Biologists Limited 2007 2007 vacuolar H + -ATPase V-ATPase NHE BCECF intracellular pH dopamine biogenic amines insect cockroach Periplaneta americana salivary glands Intracellular pH (pH i ) affects a plethora of physiological processes, such as cellular...

... and delayed, but lasted longer, under hypoxic conditions compared with normoxic conditions. Low but significant correlations between levels of lactate and levels of adrenaline, octopamine and tryptophan suggest the involvement of biogenic amines in the mediation of the signal. * Present address...

... and flight in adult moths. We report here that the response of the adult heart to a subset of the CAPs, the CAP 2 s, is potentiated nearly twofold in the chronic presence of subthreshold levels of the biogenic amine octopamine or near-threshold levels of the biogenic amine serotonin. Subthreshold levels...

... that DUM1b is an octopaminergic modulator of muscle contractions and may also influence numerous other body functions by releasing octopamine as a hormone from sympathetic neurohaemal areas. neurosecretory cells biogenic amines insects octopamine sympathetic nervous system Locusta migratoria...