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Tag: "pheromones" at biology news

Hives ferment a yeasty brew, attract beetle pest

...ound that small hive beetles can detect some alarm pheromones at levels below that detected by honeybees. The beetles associate the alarm chemicals with a good food source and head for the hive. In Africa, where the small hive beetle is a minor honeybee pest, bees quickly isolate an invading beetle, but domest...

Fighting like a girl or boy determined by gene in fruit flies

... (Ultimately, courtship behavior is constrained by pheromones and anatomy, which do not change.) He contacted Kravitz, hoping that aggression studies would resolve the lingering question of male behavior changes. Meanwhile, co-author Steven Nilsen, a postdoctoral fellow in Kravitz's lab, had similar questio...

Robots manipulating animal behaviour

...r by mimicking the animals' movements. Coated with pheromones taken from roaches, the infiltrator robots even fo... into thinking they are real creatures. The roach pheromones ?a blend of molecules developed by the project partner from the Université de Rennes I, France ?enab...

Rare Chinese frogs communicate by means of ultrasonic sound

...olarized light vision in ants, chemical sensing of pheromones in insects and rodents, echolocation by ultrasound in bats and dolphins, are just a few examples. "That frogs can communicate with ultrasound adds to that list and represents a novel finding, because we normally think such ability is limited to anim...

The brain is broadly wired for reproduction

...standing the far-reaching influence that odors and pheromones may have on reproduction and other behaviors. The...accessory) system receives signals -- triggered by pheromones -- from the vomeronasal organ (VNO) in the nasal septum. However, the systems are not entirely paral...

Olfactory system detects pheromones that control reproduction

...Medical Institute researchers have discovered that pheromones essential for mating behavior in mice are recogniz... According to most biology textbooks, detection of pheromones takes place in a specialized structure, called the vomeronasal organ (VNO). Although the VNO resides...

New study examines how sense of smell affects mating and aggression in mice

...earchers traditionally have thought rodents detect pheromones through a specialized organ--the vomeronasal organ...main olfactory epithelium (MOE) in order to detect pheromones that elicit sexual behavior and fighting. The MOE covers the olfactory region of the nasal cavity an...

Past experience of pheromones induces dominant courtship behavior in fruit flies

...ugh for young males to smell these pheromones--the pheromones had to be carried by active adult males. The effect was so strong that males carried on exhibiting courtship dominance behavior until they were five days old. The authors of the study note that similar findings have been reported in mice and hamster...

Male elephants woo females with precise chemistry

...'s results to "tease apart the entire route of how pheromones move" from the source elephant to the recipient. They already have been studying the other end of that route - the proteins in the elephants' olfactory systems that receive the signals sent by the source. "We're interested in where the frontalin is...

Female butterflies go for sparkle -- not size -- when choosing to mate

...the fluttering of his wings is two-fold: to spread pheromones to her antennae and to stimulate her visually. The female appears to be very sensitive to this rapid flickering, which probably looks to her like a strobe-light effect." Robertson added that while these conclusions are applicable only to this partic...

Drugs from the deep blue

...ife. Others might be released into the seawater as pheromones to encourage larvae to join an existing colony, or to attract a mate. Molinski's group is collaborating with Jay Stachowicz, assistant professor in the UC Davis Section of Evolution and Ecology and his graduate student, Amy Larson, at the Bodega Mar...

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