Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Wasp found in upstate New York shows up in Southern California

25.01.2012
UC Riverside entomologist discovered Gonatocerus ater in Irvine; wasp arrived in the United States from Europe

In August 2010, an entomologist at the University of California, Riverside discovered a tiny fairyfly wasp in upstate New York that had never been seen in the United States until then. Nearly exactly a year later, he discovered the wasp in Irvine, Calif., strongly suggesting that the wasp is well established in the country.


This image shows the wasp Gonatocerus ater. Credit: Jason Mottern, UC Riverside Department of Entomology.

Called Gonatocerus ater, the wasp is about 1 millimeter long and arrived in North America from Europe. It lays its eggs inside the eggs of leafhoppers.

Leafhopper females lay their eggs inside plant tissue. Gonatocerus ater females find these eggs and lay their own eggs inside them. When the wasp eggs hatch, the larvae eat the leafhopper eggs.

"This wasp was accidentally introduced in North America," said Serguei Triapitsyn, the principal museum scientist in the Department of Entomology and the director of the Entomology Research Museum, who made the discovery. "It most likely got here in parasitized eggs of the leafhoppers in twigs of Lombardy poplar seedlings coming from Europe, perhaps long ago."

Triapitsyn explained that the wasp had been reported in Italy where the leafhopper Rhytidodus decimaquartus was determined to be its host.

"In California, we do not know if the wasp's host is this leafhopper, but I found it on the same Lombardy poplar trees that had the wasp, so an association is very likely," he said.

Triapitsyn found the wasp on August 7, 2011, when he was doing field work along a trail. He caught the insects in a net that he had swept over Lombardy poplar leaves. He preserved the sample of insects in ethanol and brought it to his lab at UC Riverside for analysis and identification, which can take long. He got a positive identification of the potential leafhopper host only two weeks ago.

"I identified the wasp as Gonatocerus ater by comparing it to wasps from upstate New York and also Europe," he said. "It would not surprise me if this wasp is found wherever Lombardy poplars are located because its likely leafhopper host prefers these trees for feeding."

According to Triapitsyn, the wasp poses no known risk – besides killing leafhopper eggs.

"It actually helps naturally control leafhopper numbers," he said. "In its absence, leafhopper populations could have skyrocketed. This illustrates how plant pests are sometimes accompanied by their natural enemies across very long distances without our knowledge."

In August 2010, Triapitsyn discovered another species of Gonatocerus on a large willow tree in the middle of a lawn on the campus of the New York State Agricultural Experiment Station in Geneva, NY.

"This wasp, which has yet to be described, is native to the United States," he said. "The fact that I found it in a relatively well visited and studied area shows just how little we know about these minute insects."

The University of California, Riverside (www.ucr.edu) is a doctoral research university, a living laboratory for groundbreaking exploration of issues critical to Inland Southern California, the state and communities around the world. Reflecting California's diverse culture, UCR's enrollment has exceeded 20,500 students. The campus will open a medical school in 2013 and has reached the heart of the Coachella Valley by way of the UCR Palm Desert Center. The campus has an annual statewide economic impact of more than $1 billion.

A broadcast studio with fiber cable to the AT&T Hollywood hub is available for live or taped interviews. UCR also has ISDN for radio interviews. To learn more, call (951) UCR-NEWS.

Iqbal Pittalwala | EurekAlert!
Further information:
http://www.ucr.edu

Further reports about: Entomology Gonatocerus Triapitsyn WASP leafhoppers poplar tree tiny fairyfly wasp

More articles from Life Sciences:

nachricht What happens in the cell nucleus after fertilization
06.12.2016 | Helmholtz Zentrum München - Deutsches Forschungszentrum für Gesundheit und Umwelt

nachricht Researchers uncover protein-based “cancer signature”
05.12.2016 | Universität Basel

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Significantly more productivity in USP lasers

In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.

Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

Im Focus: MADMAX: Max Planck Institute for Physics takes up axion research

The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.

The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

Simple processing technique could cut cost of organic PV and wearable electronics

06.12.2016 | Materials Sciences

3-D printed kidney phantoms aid nuclear medicine dosing calibration

06.12.2016 | Medical Engineering

Robot on demand: Mobile machining of aircraft components with high precision

06.12.2016 | Power and Electrical Engineering

VideoLinks
B2B-VideoLinks
More VideoLinks >>>