HOME >> BIOLOGY >> NEWS
Ocean invaders in deep time

Much has been made of the economic impacts of recent biological invasions, but what are the implications of invasions in deep time? Luiz Rocha leads geneticists who time travel through ocean environments. The results of their travels, published online in Molecular Ecology, tell us that during warm, interglacial periods, reef-associated fish (goby genus Gnatholepis), leapt around the horn of Africa into the Atlantic, where their range expanded as the world warmed.

"We found that global warming events correspond clearly with major range expansions of gobies from the Indian Ocean into the Atlantic Ocean and subsequently into the Eastern Atlantic," summarizes Rocha. A chilly Antarctic current--the Benguela upwelling system-- surges up along the western coast of Africa acting as a natural barrier, and has prevented most warm water organisms from the Indian Ocean from making it in to the Atlantic for the last 2 million years. But when the world warmed about 150,000 years ago, gobies slipped around the corner of the continent.

Researchers at the Smithsonian Tropical Research Institute, Scripps Institution of Oceanography, Hofstra University and the University of Hawaii, sequenced goby DNA (774 pb of the mtDNA of cytochrome b, to be exact) from the western, central and eastern Atlantic Ocean. They also sequenced DNA from gobies in the same genus from South Africa, from the Cocos Keeling Islands in the eastern Indian Ocean, and from the Cook Islands in the South Pacific. They calculate the approximate amount of time that isolated groups of fish have been separate based on the differences in the DNA between groups.

What evidence do they have that makes them think that Atlantic gobies are invaders? "The Atlantic goldspot goby certainly is a prime candidate-it's the only species of the genus in the Atlantic and there are eight species and subspecies in the Indo-Pacific. It's really similar to a sister taxon in the Indian Ocean," Rocha continues. "
'"/>

Contact: Beth King
kingb@si.edu
202-786-2094 x8216
Smithsonian Tropical Research Institute
13-Oct-2005


Page: 1 2

Related biology news :

1. West African Ocean sediment core links monsoons to global climate evolution
2. Climate change signal detected in the Indian Ocean
3. Ocean observing contracts awarded to UC San Diego and University of Washington
4. Oceans twilight zone may be a key to understanding climate change
5. AAAS Oceans Panel examines advances in science and technology to boost fishery sustainability
6. Ocean governance: Evolving systems
7. Scientists discover new life forms in the Arctic Ocean
8. New study links western wildfires to Atlantic Ocean surface temperatures
9. Ocean temperature predicts spread of marine species
10. Ocean sampling yields environmental sources of coral symbionts
11. Continued warming of the Arctic Ocean

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Ocean invaders deep time

(Date:12/17/2014)... DENVER , Dec. 16, 2014  Automation ... is this more evident than at international borders. ... secure document scanners have allowed veteran travelers to ... Automated Passport Control (APC) Kiosks at an increasing ... the globe. According to ...
(Date:12/11/2014)... , Dec. 10, 2014  That blood pressure plays a ... while. Hypertension – the medical term for high blood pressure ... 1800s, and the inflatable cuff that,s used in measuring blood ... mean there,s nothing new about hypertension, its triggers and its ... about the condition and the best ways to treat it. ...
(Date:12/10/2014)... 9, 2014  Wake Forest Baptist Medical Center today announced ... School of Medicine. Funding for this $50 million capital ... will be publicly launched next summer. ... former 60 series R.J. Reynolds Tobacco Company complex, adjacent ... begin immediately with plans to be ready to welcome ...
Breaking Biology News(10 mins):Automated Border Control (ABC) Transforms the Global Travel Experience With More Than 2500 ABC eGates and APC Kiosks Deployed In Airports, Seaports, and Land Borders Worldwide 2Research points to need for new approaches to treatment of high blood pressure 2Research points to need for new approaches to treatment of high blood pressure 3Research points to need for new approaches to treatment of high blood pressure 4Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 2Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 3Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 4
(Date:12/17/2014)... USA (PRWEB) December 16, 2014 ... manager at Philipps- Universität Marburg’s Department of Physics, ... photonics, in the newly released SPIE Women ... never be too shy to ask questions.” , ... technology, engineering, and mathematics) occupations ranging from university ...
(Date:12/17/2014)... N.J. (PRWEB) December 17, 2014 ... (Euronext: IPN; ADR: IPSEY), today announced ... (referred to as Somatuline®) was approved by the ... treatment of gastroenteropancreatic neuroendocrine tumors (GEP-NETs) in adult ... advanced or metastatic disease to improve progression-free survival ...
(Date:12/17/2014)... 17, 2014 This report is ... Tubing industry. For an overview analysis, the report ... industry chain structure, industry overview, policy analysis, and ... industry has witnessed rapid development with key ... acquisitions. This report mentions quartz tubing upstream raw ...
(Date:12/17/2014)... (PRWEB) December 17, 2014 Gene ... that it has entered into a technology access ... (ADM) to apply DNA2.0’s proprietary protein engineering technology, ... process. , “We are extremely excited that the ... platform. This proprietary bioengineering technology has now ...
Breaking Biology Technology:Network, Multitask, Persevere: SPIE Women in Optics Planner Subjects Share from Experience 2Network, Multitask, Persevere: SPIE Women in Optics Planner Subjects Share from Experience 3Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 2Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 3Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 4Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 5Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 6Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 7Ipsen Announces the FDA Approval of Somatuline® Depot® (lanreotide) Injection for the Treatment of Gastroenteropancreatic Neuroendocrine Tumors 82020 Quartz Tubing Market: Global Development & Forecasts Analysis Now at DeepResearchReports.com 2ADM and DNA2.0 Enter Into Protein Engineering Technology Access and Service Agreement 2
Cached News: