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Russian Dolls of the Bug World

By Guest PostMarch 1, 2012Scienceacyrthosiphon pisum, aphid alarm pheromone, aphidius ervi, aphids, apse, bacteriophage, bacterium, battle for survival, environmental sciences, Europe, hamiltonella defense, hemolymph, insect, kerry oliver, martha molly hunter, North America, parasite and host, parasitic wasps, pea aphid, russian dolls, symbiont, trans b farnesene, university of arizona, virus, wasp larva

Parasitic wasps using tiny insects known as aphids as living nurseries for their brood can sniff out whether the host insect is protected by symbiotic bacteria, researchers have discovered.

A research team including Martha (Molly) Hunter from the department of entomology in the University of Arizona’s College of Agriculture of Life Sciences has disentangled relationships in an assembly of players that resemble Russian dolls: a bacterium that lives inside a tiny insect, a virus that infects those bacteria, and a parasitic wasp that lays its eggs in the insect.

In a war between parasite and host, the parasitic wasp, Aphidius ervi, and the pea aphid, Acyrthosiphon pisum, are locked in a battle for survival. (more…)

UA Professor to Attend Lady Gaga Foundation Launch

By Guest PostFebruary 27, 2012Cultureadult modeling, anti bullying ethos, anti bullying foundation, born this way, bullying, cyberbullying, cynthia germanotta, deepak chopra, drama, foundation, harassment, harvard university, kathleen sebelius, lady gaga, oprah winfrey, secretary, sheri bauman, university of arizona

UA professor Sheri Bauman, an expert in cyberbullying, is among those invited to attend the launch of Lady Gaga’s Born This Way Foundation, a nationwide education and advocacy organization.

University of Arizona researcher Sheri Bauman is a member of a small, but powerful, nationwide contingency invited to participate in the launch of Lady Gaga’s new anti-bullying foundation. (more…)

New Views Show Old NASA Mars Landers

By Guest PostFebruary 9, 2012Scienceball aerospace, bonneville crater, canadian space agency, color image, denver, earth, hirise camera, liquid water, lockheed martin space systems, mars, mars reconnaissance orbiter, martian arctic winter, martian soil particles, martian surface, meteorite, microscope, NASA, Phoenix, spacecraft, telescopic camera, three petal lander, university of arizona

The High Resolution Imaging Science Experiment (HiRISE) camera on NASA’s Mars Reconnaissance Orbiter recorded a scene on Jan. 29, 2012, that includes the first color image from orbit showing the three-petal lander of NASA’s Mars Exploration Rover Spirit mission. Spirit drove off that lander platform in January 2004 and spent most of its six-year working life in a range of hills about two miles to the east.

Another recent image from HiRISE, taken on Jan. 26, 2012, shows NASA’s Phoenix Mars Lander and its surroundings on far-northern Mars after that spacecraft’s second Martian arctic winter. Phoenix exceeded its planned mission life in 2008, ending its work as solar energy waned during approach of its first Mars winter. (more…)

A Bug’s (Sex) Life: Diving Beetles Offer Clues About Sexual Selection

By Guest PostFebruary 6, 2012Nature, Sciencearizona desert, co evolution, dawn higginson, diving beetles, dytiscidae, epifluorescence image, Europe, evolution, evolutionary relationship, female, fertilization, great diving beetle, hygrotus sayi, invertebrate, kari segraves, kelly miller, larva, male, mammal, mollusk, reproductive organ, scott pitnick, sexual evolution, sexual selection, sexual trait, speciation, sperm evolution, sperm storage, spermatheca, syracuse university, thermonectus marmoratus, university of arizona

*Studies of diving beetles suggest sperm evolution may be driven by changes in female reproductive organs, challenging the paradigm of post-mating sexual selection being driven mostly by competition among sperm.*

Studying female reproductive tracts and sperm in diving beetles (Dytiscidae), researchers from the University of Arizona and Syracuse University have obtained a glimpse into a bizarre and amazing world of sperm that can take on a variety of forms – including joining together into conglomerates that navigate the twisted mazes of the female reproductive tract.

Analyses of the evolutionary relationships among diving beetles reveal that sperm form appears to follow function dictated by female reproductive organs. (more…)

For Some Medical Residents, Empathy Declines With Long-Call

By Guest PostJanuary 31, 2012Generalburnout, chris segrin, concern, damage, degradation, diagnostic ability, domino effect, environmental stressors, fatigue, health care provider, heavy workload, long call, medical resident, one way street, patient care, physician, potential of litigation, residency program, sleep deprivation, stacey passalacqua, survey, tough situation, trait empathy, university of arizona

*In a newly published study, researchers found the majority of medical residents surveyed experienced a decline in empathy over the course of the oft-used “long-call” shift.*

Fatigue and sleep deprivation are undisputed job descriptors for medical residents, but results from a new study indicate the common “long-call” shift may have adverse effects not only for residents, but also their patients.

University of Arizona alumna Stacey Passalacqua, now a visiting assistant professor at James Madison University’s School of Communication, surveyed nearly 100 medical residents at several different hospitals. (more…)

Photo from NASA Mars Orbiter Shows Wind’s Handiwork

By Guest PostJanuary 25, 2012Scienceball aerospace, Environment, hirise camera, image, impact crater, mars reconnaissance orbiter, martian landscape, meteorite, NASA, noachis terra, planet, seasonal frosts, southern mars, university of arizona, wind

Some images of stark Martian landscapes provide visual appeal beyond their science value, including a recent scene of wind-sculpted features from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA’s Mars Reconnaissance Orbiter.

The scene shows dunes and sand ripples of various shapes and sizes inside an impact crater in the Noachis Terra region of southern Mars. Patterns of dune erosion and deposition provide insight into the sedimentary history of the area. (more…)

Scientists Prepare to Take First-Ever Picture of a Black Hole

By Guest PostJanuary 16, 2012Scienceabyss of space, albert einstein, alma, arizona, astrophysicists, atacama large millimeter array, atmosphere, black hole, black void, center of milky way, Chile, cosmic traffic jam, dan marrone, daniel stolte, dimitrios psaltis, earth, einstein, event horizon, event horizon telescope, extreme environment, field of gravity, game changer, general relativity, global array, hawaii, haystack observatory, maelstroms, mass, massachusetts institute of technology, mauna kea, mercury, Mexico, MIT, mt graham, nothingness, optical telescopes, plasma, radio telescopes, radio waves, shadow, sheperd doeleman, south pole, space and time, steward observatory, sun, supermassive black hole, theory of general relativity, tucson, ultra precise timing, universe, university of arizona, virtual telescope, water vapor, wavelengths

*The Event Horizon Telescope is an Earth-sized virtual telescope powerful enough to see all the way to the center of our Milky Way, where a supermassive black hole will allow astrophysicists to put Einstein’s Theory of General Relativity to the test.*

Astronomers, physicists and scientists from related fields across the world will convene in Tucson, Ariz. on Jan. 18 to discuss an endeavor that only a few years ago would have been regarded as nothing less than outrageous.

The conference is organized by Dimitrios Psaltis, an associate professor of astrophysics at the University of Arizona’s Steward Observatory, and Dan Marrone, an assistant professor of astronomy at Steward Observatory. (more…)

Sewing the Inner, Creative Mind

By Guest PostJanuary 14, 2012Cultureabstract art, alternative energy sources, artist, bicycle electric generator, creativity, explode, french, ideals, imagination, los angeles, millions of stitches, mini canvases, musician, new york, nosa, notetaker, paul nosa, perfectionism, perfectionist, pittsburgh, san francisco, sculpture, sewing machine, singer cg590, sketchbooks, solar power, solar sewing rover, Technology, the imminent truth, university of arizona, us tour, west coast cities, window untouched

*UA alumnus Paul Nosa travels with his solar powered sewing machine, stitching patches of the thoughts people choose to share with him.*

Paul Nosa is a perfectionist – well, a reformed perfectionist.

A musician and formally trained artist who studied sculpture at the University of Arizona, Nosa is accustomed to art that is organized and linear.

But his current work stands in stark opposition. (more…)

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