Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Pesky ants found in Hawaii demonstrate invasive characteristics

02.11.2011
A common pest in the mainland United States known for its tropical smell now has a tropical habitat to go along with it.

Odorous house ants - so called because they tend to invade houses and smell like coconut when smashed - have found their way to Hawaii. And, according to Purdue University entomologist Grzegorz Buczkowski, it doesn't seem as though they have plans to end their vacations.

"Odorous house ants in Hawaii are not like they are here in natural areas where they live in small colonies. They are creating megacolonies like they do in urban areas," said Buczkowski, whose findings were published in the journal Myrmecological News. "We went there to eliminate the ants, but we found it's too late to treat for them."

In the continental United States, odorous house ants are especially troublesome because they are difficult to remove, Buczkowski said. A nest might be eliminated at one house, but other nests could be in nearby yards, allowing the ants to come back.

"It's one of the worst, if not the worst, pest species in homes," Buczkowski said.

Buczkowski said it's too soon to know what the effect of odorous house ants will be on Hawaii's native plant and animal species, but he wants to monitor the ecosystem around their nests.

Of concern is how the ants might react to Hawaii's climate. On the mainland, odorous house ants go dormant in winter, but with Hawaii's favorable year-round temperatures, the ants could continue to eat and expand much faster than in their native range.

In natural settings, odorous house ants live about 50 to a colony with one queen, often taking up residence in acorns or other small spaces. But Buczkowski's previous research has shown that when odorous house ants move into urban areas, colony sizes explode. On the Purdue campus, for example, Buczkowski has found a colony with 5 million workers and about 25,000 queens.

In Maui, the ants are taking up residence on the western slopes of the Haleakala volcano among some small farms, somewhat like the natural settings where the ants are found on the mainland. But despite a more natural setting in Maui, they're forming large colonies. Buczkowski said he estimated the Maui invasion is a single supercolony with more than 300 nests and multiple queens per nest covering more than 45 acres.

It's likely the ants stowed away on a ship, but Buczkowski said he's still stunned they made such a long journey from their native area.

"They aren't supposed to be in Hawaii," Buczkowski said. "To go from the mainland to Hawaii, more than 2,500 miles over the sea, is amazing."

The ants are also thriving among several inhospitable ant species, such as invasive Argentine and big-headed ants, which are aggressive toward other ant species.

"They didn't just invade a place that was free of ants and gain a foothold. They are in the middle of other ants and thriving," Buczkowski said. "If odorous house ants can get established there, they can get established anywhere. They could be invasive anywhere in the world."

The U.S. Department of Agriculture National Institute of Food and Agriculture and DuPont funded Buczkowski's research.

Writer: Brian Wallheimer, 765-496-2050, bwallhei@purdue.edu

Source: Grzegorz Buczkowski, 765-494-6314, gbuczkow@purdue.edu

Ag Communications: (765) 494-2722;
Keith Robinson, robins89@purdue.edu
Agriculture News Page

Brian Wallheimer | EurekAlert!
Further information:
http://www.purdue.edu

Further reports about: Odorous house ants Pesky ants agriculture tropical habitat urban areas

More articles from Agricultural and Forestry Science:

nachricht Alkaline soil, sensible sensor
03.08.2017 | American Society of Agronomy

nachricht New 3-D model predicts best planting practices for farmers
26.06.2017 | Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

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

Im Focus: Fizzy soda water could be key to clean manufacture of flat wonder material: Graphene

Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.

As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...

Im Focus: Exotic quantum states made from light: Physicists create optical “wells” for a super-photon

Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.

Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...

Im Focus: Circular RNA linked to brain function

For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.

While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...

Im Focus: RAVAN CubeSat measures Earth's outgoing energy

An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.

The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...

Im Focus: Scientists shine new light on the “other high temperature superconductor”

A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.

Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Call for Papers – ICNFT 2018, 5th International Conference on New Forming Technology

16.08.2017 | Event News

Sustainability is the business model of tomorrow

04.08.2017 | Event News

Clash of Realities 2017: Registration now open. International Conference at TH Köln

26.07.2017 | Event News

 
Latest News

A Map of the Cell’s Power Station

18.08.2017 | Life Sciences

Engineering team images tiny quasicrystals as they form

18.08.2017 | Physics and Astronomy

Researchers printed graphene-like materials with inkjet

18.08.2017 | Materials Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>