Sentences with phrase «male sex pheromone»

When the scientists analyzed the N. vitripennis male sex pheromone, they found it contained two important chemicals, which they call RS and RR.

RS also turns up in the male sex pheromones of another species of wasp, N. giraulti, whereas RR appears to be unique.

Not exact matches

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.

After conducting a range of different experiments, the researchers discovered that some of the chemicals left behind by the females, called sex pheromones, were largely responsible for keeping the males awake.

«The overall message,» says Gries, «is that here is some great food to eat, and here is safety, because not only can they hear «live» rats, they can also smell the male rat's sex pheromone.

In the lab, and in field experiments, female brown rats readily enter trap boxes baited with the male brown rat's sex pheromone.

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.

Simon Fraser University scientists have developed a new way to exterminate rats by identifying and synthetically replicating the male brown rat's sex pheromone.

A similar discovery in fruit flies, reported in an earlier independent study, which shows that a particular sex pheromone enhances female sexual behaviors and male aggression via separate neural circuits between the sexes, suggests that a sexually distinct circuit may be a universal strategy for converting male pheromone information into appropriate behavioral output.

Top: When male mice detect the ESP1 sex pheromone, they display enhanced aggressive behavior toward other male mice.

Unlike many other species, male hunting spiders do not use chemical signals such as sex pheromones to attract a mate.

The newest measure involves hijacking a sex pheromone that male lampreys use to attract females.

Many orchids are masters of sexual deception, tricking male insects into pollinating their flowers by producing chemicals that precisely mimic female insects» sex pheromones.

Sex pheromones wafting from a female's skin drive males crazy, but how they work has long been a mystery.

To find out whether sex hormones affect the number of neurons devoted to detecting female pheromones, the researchers removed the testes from male mice and the ovaries from females.

Maures et al. (p. 541, published online 29 November) explored why the presence of abundant mating - competent males causes a decrease in the life span of nematodes of the opposite sex and found that a secreted substance, possibly a pheromone, reproduced the effect of the males when transferred in the culture medium.

«The traps utilizing sex pheromones to attract only male cockroaches are not sufficient,» says Nishino.

In moths, females emit a species - specific sex pheromone, consisting of a blend of biochemically related components, to which males are attracted.

In contrast, the Drosophila sex pheromone cVA is detected by both sexes and elicits dimorphic behavior by routing the signal via different third order neuronal circuits deep in the brains of males and females [19].

Megan Massa: Rapid Effects of Testosterone on Responsiveness to Sex Pheromones in Male Carassius auratus

In silk moths, this is achieved by only males expressing the receptor BmOR - 1 in their antenna, which detects the female - specific sex pheromone bombykol [18].

Thus diversity in receptor expression can explain differences in odor sensitivity, but does not appear to dictate whether sex pheromones are differentially detected by males or females.

Before then, they assumed that B. germanica didn't need a volatile sex pheromone because the cockroaches live in close quarters where males could easily find females, Schal says.

However the contraceptive pill tampers with this cycle, so your smell receptors aren't as responsive to the male (or female) pheromone, and may reduce your interest in sex.