HOME >> BIOLOGY >> NEWS
International trade imperils U.S. plants, animals and crops

e the Russian wheat aphid, that attack crops; parasitic plants like witch weed, which now affect corn farmers; or weeds, such as thistles, that invade cropland. Alien weeds like spotted knapweed, star thistle and cheat grass reduce the quality of rangeland for grazing cattle, while fungi and insects plague both croplands and forest trees. A recent arrival is the Asian long-horned beetle, first detected only in the past three years, now feasting on hardwood trees in the Northeast.

"This beetle came over from China in wood packaging material and is destroying street trees in several cities in the East," she said. "It has a very wide host range and, while it is currently feasting on a variety of maple species, it has the potential to expand to many other types of trees."

Crop weeds accounted for $26 billion in loss and control last year, while agricultural pests cost the country $14.4 billion, according to the report in Bioscience. Forest pests, on the other hand, cost $2.1 billion, counting control costs and lost production. Fire ants alone accounted for a billion dollars last year in control costs and the loss of rangeland in the Southeast and Texas.

Apart from economic damage, however, these invaders upset the ecosystem, preying on native species, outcompeting them and spreading disease. They also can alter ecosystem processes to the point that the systems can no longer support native species. Non-indigenous species are second only to land use change in causing species extinction, D'Antonio said.

"I don't think any native communities are entirely resistant to invasion," she said. "With repeated introduction of new propagules, you increase the probability that a few of them will establish themselves, and eventually some will cause the extinction of native species."

Propagules are larvae, seeds or pieces of plants or fungi capable of developing into mature adults.

One of the major sources of alien pathogens such as fungi are nursery pl
'"/>

Contact: Robert Sanders
rls@pa.urel.berkeley.edu
510-643-6998
University of California - Berkeley
19-Feb-2000


Page: 1 2 3 4

Related biology news :

1. International study findings link acne-like rash to effectiveness of new targeted cancer treatment
2. USAID, Conservation International & Starbucks launch Conservation Coffee Alliance in Central America
3. ConocoPhillips & Conservation International launch Biodiversity Action Plan in Venezuela
4. A room with a view for the International Space Station: Completion of the cupola observation module
5. International symposium on nutritional genomics
6. First International Scientific Conference on Childhood Leukaemia
7. 1st International Conference on Cell Therapy for Cardiovascular Disease
8. International research conferences at the Villa Vigoni
9. Conservation International & SC Johnson invest in Ecuadors rainforest to offset climate impacts
10. STN International launches Derwent World Patents Index First View
11. Media invited to attend International Society For Heart & Lung Transplantation meeting April 21-24

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:10/4/2017)... 2017  GCE Solutions, a global clinical research organization (CRO), announces ... solution on October 4, 2017. Shadow is designed to assist medical ... policy 0070 of the European Medicines Agency (EMA) in meeting the ... ... ...
(Date:6/23/2017)... N.Y. and ITHACA, N.Y. ... ) and Cornell University, a leader in dairy research, ... with bioinformatics designed to help reduce the chances that ... With the onset of this dairy project, Cornell University ... Consortium for Sequencing the Food Supply Chain, a food ...
(Date:5/6/2017)... May 5, 2017 RAM Group ... a new breakthrough in biometric authentication based on ... mechanical properties to perform biometric authentication. These new sensors ... material created by Ram Group and its partners. This ... transportation, supply chains and security. Ram Group is ...
Breaking Biology News(10 mins):
(Date:10/10/2017)... ... October 10, 2017 , ... ... advancing targeted antibody-drug conjugate (ADC) therapeutics, today confirmed licensing rights that give ... Liposomal Nanoparticle), a technology developed in collaboration with Children’s Hospital Los Angeles ...
(Date:10/10/2017)... (PRWEB) , ... October 10, 2017 , ... Dr. Bob ... at his local San Diego Rotary Club. The event entitled “Stem ... CA and had 300+ attendees. Dr. Harman, DVM, MPVM was joined by two ...
(Date:10/10/2017)... 10, 2017 SomaGenics announced the receipt of ... develop RealSeq®-SC (Single Cell), expected to be the first ... (including microRNAs) from single cells using NGS methods. The ... to accelerate development of approaches to analyze the heterogeneity ... "New techniques for measuring levels of mRNAs in individual ...
(Date:10/10/2017)... ... October 10, 2017 , ... The Pittcon Program Committee ... honoring scientists who have made outstanding contributions to analytical chemistry and applied ... the world’s leading conference and exposition for laboratory science, which will be held ...
Breaking Biology Technology:
Cached News: