Among Wrens, Moms Teach Daughters To Call, Dads Teach Sons, Study Reveals
...e same sex and not the other." Perhaps the behavior somehow prevents closely related birds frombreeding with one another, he said. Since males and females areindistinguishable by sight, the calls may reveal both kinship and sex. Studying life in the wild can be exhilarating as well as painstak......mals. A second finding indicates that the behavior changes are associated withalterations in two brai...arch showedthat vasopressin facilitates aggressive behavior and that serotonin inhibitsaggressive behavior in hamsters and other species. "We suspect ...Eviction From Scum Home Makes Disease-Causing Microbe Vulnerable
...When the signal hits a certain threshold,bacterial behavior suddenly changes. Scientists first discoveredthe phenomenon about 20 years ago among bacteria responsible forthe light that flashlight fish give off. In Pseudomonas, the scientists found that only if enoughbacteria were releasing the signal mole...Florida Or Bust? Older Lab Rats Seek Heat To Fight Infection, UD Researchers Report
...huddlingin hot spots, and ongoing studies of their behavior may suggest drug-freestrategies to help older people fight infections, University of Delawareresearchers reported today at the Experimental Biology '98 meeting. "Most older rats, like many older people, either don't get fevers or get lowfevers when t...Infant Dependency Drives Menopause, NSF-Supported Researcher Reports
...alesto help younger females raise offspring. Such behavior should result in highersurvival of individuals whose grandmothers are still alive but no longerreproductive. Although grandmother lions and baboons both engage in what'scalled kin-directed behavior, they had no measurable impact on the survival orre...... is mainly for in most mammals:for the stereotyped behavior of manipulating food to position it for chewing." The researchers found that the canals in humans measured about twice aslarge as those in chimpanzees. The Australopithecus canals proved to beape-sized, but by contrast, the Neanderthal and ea......a is a latecomer to the revolution in reproductive behavior sweeping across the developing world, but is now poised for positive change with respect to childbearing patterns and sexual health," says Shanti R. Conly , PAI's director of policy analysis and co-author of the study. "Meanwhile the needs are urgent...Pediatric Academic Societies Report Progress In Children's Health
... childrenFor the first time, a school-based health behavior intervention program has beenshown to reduce obesity in children. The intervention, called Planet Health, wasdeveloped by researchers at the Harvard School of Public Health, headed by Dr.Steven Gortmaker, a senior lecturer in the Department of Health...Biggest Acoustics Meeting Ever
...f living creatures to learn newdetails about their behavior and physiology. Whales generate long rhythmic patterns of sound, and somesounds can travel hundreds of miles underwater. Analyzing "the remarkable cadence" of these patterns,Christopher Clark of Cornell University ( cwc2@cornell.edu ) will show that ......pe-labeled membranes, areas of different dynamical behavior were detected, and a functionally ess...bels, areas of differential dynamical behavior within the protein, as well as the position of functionally important lipids surroundin...Antimicrobial Resistance: Issues And Options
...f antibiotics will require changes in attitude and behavior among health care providers, patients, parents, managed-care organizations, the pharmaceutical industry, and others. Since no adequate enforcement mechanisms exist to ensure proper antibiotic use, current efforts consist primarily of trying to educa...Dust Mite Behavior May Show New Ways To Control Pests
...t Ohio State University have uncoveredsome curious behavior among common household dust mites that may one daysuggest a better means of exterminating them. Researchers have long known that dust mites die without adequate moisture.Now a study has revealed that males of the species employ a special trickto sur...... salinesolution that simulates the electromagnetic behavior of the human torso. Using a computer-controlled positioner, the tank containing the medicaldevice is moved through each merchandise control system in a manner thatsimulates the way customers might walk through such systems in retailstores. The test ...Ionotropic Glutamate Receptors Share Tetrameric Structure With The Voltage GatedPotassium Channel
... Recently other groups are finding similar behavior on other ligand-gated and voltage gated channels. This international group continues its collaboration to understand in more detail how these receptor function, particularly of interest is how the specific conformations indu...Gene Linked To Glaucoma, Hydrocephalus, And Other Birth Defects
...e very sensitive to relatively smallchanges in the behavior of the meshwork cells," she said. The heterozygous mf1 knock-out mice -- those with one working copy of the mf1gene -- did not exhibit any obviously severe eye disorders. However, theresearchers are now collaborating with Simon John, Ph.D., at the J...Largest Generation Of Adolescents Faces Reproductive Health Risks
...analyze thecauses and consequences of reproductive behavior among adolescents in thedeveloping world and offer policy options to address the urgent needs ofadolescents as they make the transition to adulthood. Sexual Behavior and Contraceptive Knowledge and Use Among Adolescents inDeveloping Countries Many ...'Auditory Scene Analysis' Helps Find Mates
...rew H. Bass, Cornell professor of neurobiology and behavior who will present his group's findings June 25 at t...ben, a postdoctoral researcher in neurobiology and behavior at Cornell, will be published in the Journal of the Acoustical Society of America. Meanwhile, exp...Life In Antarctic Ice May Compare To Mars
...nsure that studies of bacteria, their evolution or behavior hadany practical value. But new applications of bacterial research in understandingthe global carbon cycle, creating new antibiotics or enzymes for industrial usehave raised increasing interest, he said. And the search for life elsewhere in t...Researchers Document Transmission Of Protease-Resistant HIV
...aid his partner had withdrawnbefore ejaculation, a behavior that many in the gay community have considered tobe a low-risk practice. "There may be a tendency to feel complacent because of the success of treatmentefforts," Hecht said, "but the fact that this transmission occurred by apractice that many conside...'Molecular' Computers? Munich/UD Researchers Report First Glimpse Of Artificial Molecule In Action
...lick says, no one has been able to investigate the behavior ofartificial molecules in motion-until now. Looking for Life To detect signs of molecular activity in a semiconductor model, the researchteam set out to observe Rabi oscillations-the characteristic movement ofelectrons traveling back and forth be...