[New Research]
Sex is widely recognized as rewarding across the animal kingdom, but rejection of sexual advances or even deprivation can have negative effects. Behavioral studies indicate that sex can be positive—that is, viewed as a reward—in some learning experiments. Rejection of a sexual advance can also have lasting effects on physiology and behavior. How the success or failure of courtship behaviors are linked to other behaviors has been difficult to address. Dr. Galit Shohat-Ophir, of the Howard Hughes Medical Institute in Virginia, US. and his team of scientists have assessed the connection between the rewarding properties of sex and the effects of sex deprivation in the fly Drosophila melanogaster(common fruit fly). The authors discover a neural system defined by a specific neuropeptide that unexpectedly couples courtship rejection or sex deprivation to a rewarding behavior—ethanol(ethyl alcohol) consumption.
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