ASU Polytechnic campus to host Cal Poly for final home wrestling duel

February 13, 2013

Arizona State University is hosting a wrestling match against Cal Poly at 7 p.m., MT, Feb. 15, at the new Sun Devil Fitness Complex, which opened in January 2013, at the ASU Polytechnic campus.

This final Pac-12 conference match of the wrestling season will be the first sporting event in the new Sun Devil Fitness Complex at the location. Funded by a student government-endorsed facility fee, the 60,000 square foot facility includes weights and fitness areas, gyms for group fitness classes, three basketball courts, a swimming pool, locker rooms, bike co-op, and the campus health and wellness Download Full Image

The match-up is also Senior Night, where two senior-student athletes and their families will be honored. The Sun Devils will honor seniors Levi Cooper and Jake Meredith, who will finish their careers at ASU at the end of the season.

Cooper is the team’s lone returning All-American, having earned the honor as a sophomore two years ago. Consistently ranked as one of the top 20 heavyweights in the nation for the past two seasons, Cooper has compiled a career record of 81-50 and is 38-22 in conference duals.

Cooper leads the team in dual victories this season with a 14-4 record and over his career, he has amassed 28 bonus-point victories – a mark good enough for 18th all-time in ASU history.

Meredith made the decision to return for another season after missing the 2011-12 campaign due to an injury.  An NCAA Championship participant and Pac-12 Champion at 184 pounds during the 2010-11 season, Meredith moved up to 197 pounds this season and has established himself as one of the elite grapplers at the weight class.

Meredith has put together a career record of 70-47 and is 35-23 in dual competition. He is 22-6 this season and has been ranked in the nation’s top-10 at 197 pounds for the majority of the year.

Tickets can be purchased at the door or by visiting the Sun Devil Ticket Office, located at the Carson Student-Athlete Center (south end of Sun Devil Stadium). Fans can reach a representative in the Ticket Office by phone at (480) 727-0000 or via email at

Ticket prices for the Cal-Poly match-up are $7 for adults, $5 for junior and seniors (fans under 18 years of age or over 60 years of age are eligible), $5 for ASU faculty and staff (must show a valid University ID) and $3 per person for groups of 15 or more.

The ASU Polytechnic campus is located in East Mesa and is home to more than 6,000 students exploring ASU’s professional and technological programs. The campus is located at 7001 E. Williams Field Road in Mesa, Ariz.

Lisa Robbins

editor/publisher, Media Relations and Strategic Communications


Finding 'Mr. Right': How insects sniff out the perfect mate

February 13, 2013

You may want to ramp up your romance this year by sharing a candlelight dinner, a walk on the beach, or even the scent of a perfume, but will that help you find your perfect mate? For one wasp species, it only takes a whiff of his special love potion to know whether he’s “Mr. Right.”

Unlike humans, most insects rely on their sense of smell when looking for a mate. Scientists have found that sex pheromones play an important role in finding a suitable partner of the same species; yet, little is known about the evolution and genetic basis of these alluring smells. Nasonia vitripennis male wasp courting a N. vitripennis female Download Full Image

A team of researchers from Arizona State University and Germany found that one wasp species has evolved a specific scent, or pheromone, which keeps it from mating with other species. In addition, they discovered that the genetic basis of the new scent is simple, which allows the males to change an existing scent into a new one. Over time, the females recognize and use this new scent to distinguish their own species from others.

Scientists from ASU, the University of Regensburg, the Zoological Research Museum Alexander Koenig Bonn, and the Technical University Darmstadt in Germany, present their findings in an article published Feb. 13 online in the journal Nature.

The researchers studied two species of the parasitic wasp genus Nasonia to learn about the evolution of sex pheromones. They asked, if male sex pheromones are used as unique mating signals to attract females, and if female wasps will not mate with males that have different pheromones, then how did the vast array of these scents evolve in insects? 

They found that the pheromones of all known Nasonia wasps contain two elements except for one species, Nasonia vitripennis, which uses a novel third ingredient. These tiny wasps, less than half the size of a grain of rice, lay their eggs in developing flies. The two species in this study prefer laying their eggs in similar types of flies and are found in the same parts of the Eastern United States, which means they have many opportunities to choose the wrong mate.

“We identified a gene in N. vitripennis that we thought was responsible for its unique scent,” said Josh Gibson, an ASU doctoral student working with Jürgen Gadau, a professor in School of Life Sciences in the College of Liberal Arts and Sciences. “Then, we successfully conducted an experiment to suppress that gene, which actually changed the composition of the sex pheromone, so that it resembled that of the other species,” Gibson added. 

Female N. vitripennis wasps did not respond when offered the new pheromone alone. They responded only when it was combined with the two original, or ancestral, scents. In addition, females from a closely related species, Nasonia giraulti, did not distinguish between the new and ancestral sex pheromones, regardless of whether there were two or three scents.

Thus, the researchers concluded that the N. vitripennis females did not react to the third component when it first evolved. Instead, they adapted to the new smell over time and now it is an integral part of the species-specific sex pheromone of N. vitripennis males.

This study is one of the few where researchers have identified genes that prevent a species from breeding with another closely related species. The findings provide new insights into the evolution of genes that contribute to speciation, or the formation of new species, as well as the evolution of diverse sex pheromones.

“The females use this smell to distinguish between the species,” said Gibson. “This is important. If an individual wasp were to mate with a different species, it would be very costly because they would not produce viable offspring. We learned that the smell difference is based on a single and simple chemical change. Basically, this is the way the female wasp can find Mr. Right.”

Sandra Leander

Manager, Media Relations and Marketing, School of Life Sciences