Sentences with phrase «of the pheromone in»

Bruckstein's model replaces the pheromones by dynamical rules, but this does not deny the importance of pheromones in practice: the rules are a simplified version of «follow the previous pheromone trail but smooth it out a bit».

Not exact matches

Moms might give off airborne molecules called pheromones that spur changes in the biochemistry of dads.

The research shows that the portion of the brain that helps regulate sexuality — the hypothalamus — reacted the exact same way in straight women and gay men when exposed to male pheromones, which are chemicals designed to provoke a behavior, such as sexual arousal.

-- by Ivanka Savic article in the Proceedings of the National Academy of Sciences, (PNAS) «Brain Response To Putative Pheromones In Homosexual Men,» (Voin the Proceedings of the National Academy of Sciences, (PNAS) «Brain Response To Putative Pheromones In Homosexual Men,» (VoIn Homosexual Men,» (Vol.

• substances on EPA List 3 — Inerts of Unknown Toxicity; allowed only for use in passive pheromone dispensers.

(iii) Inert ingredients that are exempt from the requirement of a tolerance under 40 CFR 180.1122 — for use only in passive pheromone dispensers.

After we caught up on the new and old men in our lives, Cara, the only suck - up to bring an article this week, began a discussion on the fragrances that remind men of pumpkin pie — based on her article from Cosmopolitan (inherited, NOT purchased), which contested that a combination of pie and lavender is in fact the key to pheromone attraction.

It has also been suggested that dogs may be so sensitive to pregnancy because of the variations in hormones and pheromones in pregnant women.

In studying philematology (science of kissing), it wasdiscovered that by kissing, your own and baby's pheromones getswapped.

It seems that being near your pregnant partner and the effects of her pheromones, triggers hormonal changes in expectant dads.

These measures, she said, include the deployment of pheromone trap catches in various locations across the country to ascertain the levels of infestation, training of MoFA staff and farmers on scouting, early detection and sustainable management of the pest in the event of an outbreak.

«Single class of queen pheromones stops worker reproduction in ants, bees, wasps.»

Pheromones are something of a sensitive subject in human biology.

For example, when the researchers eliminated cues that normally promote aggression in a target fly — such as pheromones — the flies containing the hyperactivated «aggression» neurons attacked those targets despite the absence of the cues.

Evidence that animal pheromones don't always work in they way we thought, backed up by a growing number of brain - imaging studies in humans, is convincing some researchers that we really do make and respond to pheromones.

To see if any other receptors existed, Rodriguez's team took tissue from the vomeronasal organ — a pheromone - detecting sense organ found in the nasal cavity of mice, and some other mammals — and searched for genes expressing other possible smell receptors.

The researchers began by searching for sterility - inducing queen pheromones in representative species of wasps, bees, and ants.

They discovered that pheromones secreted by the male mouse activate these neurons which, in turn, transmit this signal to another population of neurons (gonadotropin - releasing hormone neurons) to drive attraction to the opposite sex.

Within the review, a three - phase reintroduction protocol for reducing conflict between cats in a household is described; examples of environmental enrichment for improving welfare by increasing the physical, social and temporal complexity of the environment are provided; and the use of a synthetic analogue of the feline facial pheromone is recommended.

Researchers working on the Ribeirão Preto campus of the University of São Paulo (USP) in Brazil have discovered that a bacterium found in the microbiota associated with leafcutter ant species Atta sexdens rubropilosa produces the so - called «trail pheromones,» i.e, the aromatic chemical compounds used by the ants to lay a trail to their nest.

«There is likely a biological underpinning to kissing, as it can often involve exchange of pheromones and saliva, and also pathogens — which might be particularly dangerous in societies without oral hygiene, where kissing may lead to spread of respiratory or other illness,» he said.

Such rearrangements are now a staple of organic chemists in both academia and industry for the production of everything from pharmaceuticals and agrochemicals to pheromones and polymers.

«Right about five o'clock in the afternoon — we call it the rush hour — the beetles climb to the top of the trees and release a sex pheromone that travels on the wind.

Andstudies have shown that exposure to some human emanations can boostmood, tweak hormones, and inspire aggression or attraction in others.Nonetheless, scientists haven't figured out how human pheromones work.They can't even agree on a single chemical worthy of the title.

If these pheromones are similarly broken down in the presence of ozone and nitrogen oxides, this could also seriously hit population levels.

Preti is hot on the scent of the human armpit because he believes that secretions from the so - called axillary region harbor pheromones, airborne chemical signals that influence mating, dominance, familyties, and maturation in other species of the animal kingdom.

Fuse suggests this might be due to differences in pheromone signaling when the flies select their mates, or to altered circadian rhythms of mating or sleep behaviors.

Using microelectrodes, the researchers recorded the electrical activity of pheromone - sensitive interneurons in male American cockroaches that relay signals of female - producing sex pheromones in the antennal lobe (functional homolog to the mammalian olfactory bulb) to higher - order centers.

The use of pheromones as sexual signals appears to be the ancestral condition in fireflies with the use of luminous sexual signals as being a more recent development.

In addition, the team found that some of the beetle species that used the same pheromone stayed true to their species by segregating their mating activity by season of the year.

The scientists write in their paper that if an invasive species used the same pheromone as a complex of native species, the chemicals emitted by the natives might prevent the invaders from finding suitable mates.

«We found that beetles that produce the same pheromone are active at different times of day — and that beetles that are active at the same time of day produce different pheromones,» said lead author Robert F. Mitchell, a UA research associate in the department of neuroscience and the Center for Insect Science.

In both cases, both components are absolutely necessary for attraction, and males of both strains can smell both, with similar or identical antennal structures and pheromone receptors.

This has been a lively (if contentious) research question, and studying it has resulted in some intriguing reports of candidate human pheromones.

The term «pheromone» was coined in 1959 by Peter Karlson and Martin Luscher to help organize their thinking about certain intriguing biomolecules reminiscent of hormones.

Ever since a pheromone secreted by a female moth that attracts the opposite sex was identified in 1959, scientists have pinned down numerous chemicals that affect behavior in a wide variety of animal species, from insects to mammals to humans.

Despite their growing database of known pheromones, scientists knew little about how the brain actually converts certain sensory input into appropriate behavioral output, especially in mammals.

The two «pheromone strains» of this species produce them in different proportions.

Surprisingly, the queen pheromone of honeybees seemed to lower methylation, while the queen pheromone of ants seemed to increase it, suggesting things work differently in bees and ants.

Dr Holman collaborated with biologists from the University of Helsinki to investigate whether the queen's pheromone altered DNA methylation in workers.

The experiment, Dulac adds, implies that the neuronal circuits for «male» behavior exist in the brains of female mice and that the animals» VNO, by sensing pheromones, controls which sexual behavior repertoire is expressed.

Partial activation of the yeast pheromone response pathway by beta - adrenergic receptor agonists was achieved in cells coexpressing h beta - AR and a mammalian G protein (Gs) alpha subunit - demonstrating that these components can couple to each other and to downstream effectors when expressed in yeast.

Many previous studies have examined the role that sex - specific pheromones or semiochemicals play in the evolution of a spider's reproduction cycle.

In the latest issue of the Journal of Great Lakes Research, they describe a potent pheromone that Eurasian ruffe emit when injured, and this chemical signal repulses other ruffe.

«The novel pheromone activates two different circuits: one is involved in courtship and mating of males and females, the other one in aggregation,» Markus Knaden, who led the studies, explains.

In a crucial test of their sensor, the researchers used higher levels of fungal pheromones than those normally found in patient blood or urine sampleIn a crucial test of their sensor, the researchers used higher levels of fungal pheromones than those normally found in patient blood or urine samplein patient blood or urine samples.

The cell shows its mating protrusion (the shmoo tip) in the presence of the pheromone «Kickapoo Joy Juice,» another Li» l Abner knockoff.

Pheromones are detected by the so - called vomeronasal organ, which sits in the nasal cavity and sets off a cascade of nerve signals that ends in the accessory olfactory bulb, the organ that processes pPheromones are detected by the so - called vomeronasal organ, which sits in the nasal cavity and sets off a cascade of nerve signals that ends in the accessory olfactory bulb, the organ that processes pheromonespheromones.

To handle such conditions, Ruud Schoonderwoerd and Janet Bruten, both then at Hewlett - Packard's research laboratories in Bristol, England, and Owen Holland, then at the University of the West of England, invented a routing technique in which antlike agents deposit bits of information, or «virtual pheromone,» at the network nodes to reinforce paths through uncongested areas.

According to lead author of the study, Dr Marinus De Jager of Stellenbosch University: «Since the discovery that the floral scent of these remarkable orchids mimics female sex pheromones, many of these compounds have been made in the laboratory.