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
Howard Hughes Medical Institute

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:

(Date:11/17/2015)... Nov. 17, 2015 Pressure BioSciences, Inc. (OTCQB: ... development and sale of broadly enabling, pressure cycling technology ... industry, today announced it has received gross proceeds of ... Private Placement (the "Offering"), increasing the total amount raised ... more additional closings are expected in the near future. ...
(Date:11/12/2015)... Nov. 12, 2015  Arxspan has entered into ... and Harvard for use of its ArxLab cloud-based ... tools. The partnership will support the institute,s efforts ... chemical research information internally and with external collaborators. ... for managing the Institute,s electronic laboratory notebook, compound ...
(Date:11/10/2015)... LONDON , Nov. 10, 2015 /PRNewswire/ ... segmented on the basis of product, type, ... segments included in this report are consumables, ... this report are safety biomarkers, efficacy biomarkers, ... in this report are diagnostics development, drug ...
Breaking Biology News(10 mins):
(Date:11/24/2015)... Nov. 24, 2015  Twist Bioscience, a company ... Leproust, Ph.D., Twist Bioscience chief executive officer, will ... on December 1, 2015 at 3:10 p.m. Eastern ... City. --> --> ... Twist Bioscience is on Twitter. Sign up to ...
(Date:11/24/2015)... Switzerland (PRWEB) , ... November 24, 2015 , ... InSphero ... organotypic 3D cell culture models, has promoted Melanie Aregger to serve as Chief Operating ... Ms. Aregger served on the management team and was promoted to Head ...
(Date:11/24/2015)... QC , Nov. 24, 2015 /CNW Telbec/ - ProMetic ... "Corporation") announced today that Mr. Pierre Laurin , President ... corporate presentation at the upcoming Piper Jaffray 27 th ... Palace Hotel, on December 1-2, 2015. st ... available for one-on-one meetings throughout the day. The presentation will ...
(Date:11/24/2015)... HemoShear Therapeutics, LLC, a privately held ... disorders, announced today the appointment of H. ... (BOD). Mr. Watkins is the former president and ... and also served as the chairman of the ... Chairman and CEO of HemoShear Therapeutics. "The combination ...
Breaking Biology Technology:
Cached News: