Navigation Links
After a 49-million-year hiatus, a cockroach reappears in North America
Date:1/5/2014

The cockroach in the genus Ectobius is a major textbook example of an invasive organism, and it is the most common cockroach inhabiting a large region from northernmost Europe to southernmost Africa.

Ectobius has a long fossil history in Europe, occurring in Baltic amber that is about 44 million years old, and its lineage was believed to have been exclusively from the Old World. However, a shocking new discovery has uprooted that view. In fact, it now appears that Ectobius may have originated in the New World.

Four ancient Ectobius species were recently discovered in the 49-million-year-old Green River Formation near Rifle, Colorado in deposits that are about five million years older than the Baltic amber. However, these cockroaches soon became extinct in North America. The cause for the extinction of Ectobius in North America in the dim past is unknown, but it evidently survived in the Old World, and western Europe in particular.

"About 65 years ago, several entomologists in the northeastern United States noted that four species of Ectobius were present in North America," said corresponding author Dr. Conrad Labandeira. "It was always assumed that these four newcomers were the first Ectobius species to have ever lived in North America. But the discovery in Colorado proves that their relatives were here nearly 50 million years ago."

In many ways the history of Ectobius mirrors that of the biogeographic history of the horse. Horses occurred in the New World and became extinct during the late Pleistocene ecological crisis. Horses, attached to human habitation, were subsequently introduced to North America by early Spanish explorers about 11,000 years after their demise.

The newly discovered species of Ectobius, specifically Ectobius kohlsi, are described in the January 2014 issue of Annals of the Entomological Society of America (DOI: '/>"/>

Contact: Dr. Conrad Labandeira
LABANDEC@si.edu
703-231-2756
Entomological Society of America
Source:Eurekalert  

Page: 1 2

Related biology news :

1. 1 year after Fukushima
2. AGU: Venice hasnt stopped sinking after all
3. Black flies may have a purpose after all
4. Estrogen hormone reveals protective ability after traumatic brain injury
5. Obstructive sleep apneas damage evident after 1 month
6. Scientists read the ash from the Icelandic volcano 2 years after its eruption
7. Microbial communities shifted dramatically after Deepwater Horizon spill
8. Regenerated cells may restore vision after corneal dysfunction
9. Cinega de Santa Clara unchanged after pilot run of Yuma Desalting Plant
10. Promiscuous squid fatigued after mating
11. Ethylene of no effect - why peppers do not mature after picking
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
After a 49-million-year hiatus, a cockroach reappears in North America
(Date:8/29/2014)... Researchers at UC Davis have made some surprising ... infection. Studying simian immunodeficiency virus (SIV), the team ... Paneth cells are early responders to viral invasion ... producing a cytokine called interleukin-1 beta (IL-1β). ... IL-1β causes breakdown of the gut epithelium that ...
(Date:8/29/2014)... ANTONIO (Aug. 29, 2014) Scientists at the Barshop ... School of Medicine at the UT Health Science Center ... in the tissues of the longest-lived rodent, the naked ... in the cells of naked mole rats protects and ... for damaged and obsolete proteins. , The factor also ...
(Date:8/29/2014)... recently, little has been known about what genetic changes ... of scientists, one of whom is a University of ... that genes controlling the development of the brain and ... The study was published Aug. 28 in Science ... is online at http://www.sciencemag.org/ ., The domestication of ...
Breaking Biology News(10 mins):The early cost of HIV 2Factor in naked mole rat's cells enhances protein integrity 2New research reveals how wild rabbits were genetically transformed into tame rabbits 2New research reveals how wild rabbits were genetically transformed into tame rabbits 3
... fish, ants or birds, often move in surprising synchronicity ... a phenomenon which has remained puzzling to many researchers. ... New Journal of Physics (co-owned by the ... particle model to explain the collective decision making process ...
... 5:00 p.m. U.S. Eastern Time) A new peer-reviewed paper ... an ominous finding: most of the world,s last remaining ... clustered in just six percent of their available habitat. ... Asia that are now the last hope and greatest ...
... ROCKVILLE, Md. Members of the ... the nation,s energy challenges through fundamental research into biofuels. ... recently announced by the U.S. Department of Energy (DOE) ... projects with ASPB members as key research personnel, including ...
Cached Biology News:Understanding behavioral patterns: Why bird flocks move in unison 2Last strongholds for tigers identified in new study 2Last strongholds for tigers identified in new study 3Plant biologists lead biobased-fuel research projects 2
(Date:8/29/2014)... Three Lawrence Livermore researchers have received ... R&D Award for their research in producing ... , Shared with collaborators from the National Renewable ... Las Vegas (UNLV), the award recognizes the team ... production and corrosion processes. , These models have ...
(Date:8/28/2014)... (PRWEB) August 28, 2014 SPIE Fellow ... Physics and Optical Science and Director of the Center ... North Carolina at Charlotte, and co-founder and Chairman of ... serve as the 2015 Vice President of SPIE, the ... President Philip Stahl announced recent election results at the ...
(Date:8/28/2014)... A new research platform uses a ... tiny structures undergoing stress and heating, an ... designs for microelectronics and batteries., This new ... about how heating and the surface stress ... Researchers have discussed the merits of surface-stress ...
(Date:8/28/2014)... 2014  Next month, executives from clinical trial marketing firm ... beginning with Patient-Centered Clinical Trials 2014 , to be ... , September 4-5. Patient recruitment experts Bonnie A. ... will share insights on the benefits of employing an ... – from media to mobile apps – can be used ...
Breaking Biology Technology:Livermore Team Awarded for Hydrogen Production Research 2Glenn Boreman, UNC Professor and Plasmonics Co-Founder, Elected to SPIE Presidential Chain 2New analytical technology reveals 'nanomechanical' surface traits 2New analytical technology reveals 'nanomechanical' surface traits 3BBK Worldwide Leads Sessions at Key September Events 2
... Medivation, Inc.,(Nasdaq: MDVN ) today announced that it ... second quarter 2008 progress and provide,a general business update ... A financial results press release for the second quarter ... on August 11, 2008., Interested parties may call ...
... Authors to Discuss Issue at International AIDS Conference, August ... exposure to or,transmission of HIV does nothing to reduce ... drives people away from accessing care,while disproportionately burdening women ... HIV status to partners for fear of violence,according to ...
... /Xinhua-PRNewswire-FirstCall/ --,Kiwa Bio-Tech Products Group Corporation (OTC ... (Shandong) Co., Ltd. (Kiwa Shandong),has received an ... Food,Certification Center (COFCC)., After a two-month ... Shandong,s products, the China Organic Food Certification ...
Cached Biology Technology:JAMA Commentary Opposes Criminal Punishment for HIV Exposure/Transmission 2JAMA Commentary Opposes Criminal Punishment for HIV Exposure/Transmission 3Kiwa Bio-Tech Receives Nationally Recognized Organic Products Certification 2Kiwa Bio-Tech Receives Nationally Recognized Organic Products Certification 3
...
Anti-ZFP-38/RU49 Family: Zinc Finger Peptide Sequence: SVKVEDKDFPSTCSKK...
...
... protein western blot (WtPAN) is ... specific protein expression in plant ... is included in each blot ... comparison between different western blots. ...
Biology Products: