HOME >> BIOLOGY >> NEWS
Disabling a sensory organ prompts female mice to act like male mice

nic vocalization characteristic of the male mouse. Correspondingly, female traits such as nursing behaviors and maternal aggression were diminished.

The findings provide strong evidence that male sexual behavior is hard wired into the female mouse brain and suggests, more broadly, that male and female courtship behaviors exist in the brains of both sexes and are switched on or off by the chemical cues mice use to initiate sex.

"The female behaves exactly like the male," said Dulac. "In the big picture, it suggests that the female brain has a perfectly functional male behavioral circuit."

"People who observe animal behavior have been struck by the fact that the biggest differences in behavior between animals of a given species are gender based," Dulac explained, but little is known about the underlying differences in the brain that govern the characteristic patterns of gender-based behavior.

Scientists have explored many avenues to explain sexually dimorphic behavior. To try and ferret out its cause, they've looked at everything from the influences of hormones such as testosterone to anatomy, positing that there may be a region of the brain that organizes gender-based behavior.

The sensory-controlled neural switch that governs the circuit is most likely different in male and female mice, Dulac noted, but that may be the extent of gender differences in the brain.

The work of Dulac and her colleagues promises to open a new window to the neural mechanisms that underlie gender-based behavior in animals by bringing the senses and an animal's ability to process what it sees, hears, and smells into the equation.

What occurs in humans and other animals may be quite different, Dulac noted, because the mouse depends largely on pheromones and its sense of smell, while humans and many other animals respond more to visual cues or a combination of sensory cues.

Scientists have been studying the vomeronasal organ for a century and
'"/>

Contact: Jennifer Michalowski
michalow@hhmi.org
301-215-8576
Howard Hughes Medical Institute
5-Aug-2007


Page: 1 2 3

Related biology news :

1. Disabling key protein may give physicians time to treat pneumonic plague
2. Disabling a carbohydrate trigger reduces obesity and appetite
3. Disabling gene defuses rheumatoid arthritis in mice
4. A sensory organ, not the brain, differentiates male and female behavior in some mammals
5. Carnegie Mellon University research shows how sensory-deprived brain compensates
6. Chemical signaling helps regulate sensory map formation in the brain
7. Change in neurons responsiveness marks newly formed sensory associations during learning
8. Bad aftertaste? New sensory on/off switch may cure bane of artificial sweetener search
9. Grasshopper love songs give insight into sensory tuning
10. Research shows skeleton to be endocrine organ
11. Brains hearing center may reorganize after implant of cochlear device

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/15/2017)... Aug. 15 2017   ivWatch LLC , a medical device ... therapy, today announced receipt of its ISO 13485 Certification, the global ... International Organization for Standardization (ISO®). ... ivWatch Model 400 Continuous Monitoring device for the early detection of ... "This is an important milestone ...
(Date:7/20/2017)... DAL ) customers now can use fingerprints instead of their boarding ... ... biometrics to board aircraft at Reagan Washington National Airport ... Delta,s biometric boarding pass experience that launched in May at the ... to allow eligible Delta SkyMiles Members who are enrolled in CLEAR to ...
(Date:6/30/2017)... 30, 2017 Today, American Trucking Associations ... of face and eye tracking software, became the ... program. "Artificial intelligence and advanced ... monitor a driver,s attentiveness levels while on the ... to detect fatigue and prevent potential accidents, which ...
Breaking Biology News(10 mins):
(Date:8/18/2017)... ... August 18, 2017 , ... ... will feature Federal Hybrids, Inc. in an upcoming episode, scheduled to broadcast fourth ... Farmer will explore Federal Hybrids, the independent, family-owned seed company. Educating audiences about ...
(Date:8/18/2017)... ... August 18, 2017 , ... OAI, a ... MEMS, and Microfluidics Industries, announces the new Model 800E front and backside, semi-automatic ... automated production mask aligners. OAI has already received and installed several orders ...
(Date:8/17/2017)... ... August 17, 2017 , ... ... market news outlet had provided a research update on Aytu Bioscience and cited ... product. , According to Soulstring, prescription rates for Natesto® have more than doubled ...
(Date:8/17/2017)... ... August 17, 2017 , ... Cynvenio Biosystems, Inc., a leader ... launch of a new breast cancer monitoring study in partnership with Saint Luke’s ... potential for early detection of recurrent breast cancer using LiquidBiopsy and natural killer ...
Breaking Biology Technology:
Cached News: