HOME >> BIOLOGY >> NEWS
An (ecological) origin of species for tropical reef fish

etically different North and South of this barrier. Since all of these species have similar abilities to disperse, I expected to find genetic differences that corresponded to the barrier in all of them, but, surprisingly, that wasn't the case."

Mitochondrial DNA of adult fish and larvae from three locations in the Caribbean and from three locations in Brazil showed much clearer genetic differences within, rather than across, the two sides of the Amazon barrier. Genetically similar fish were found in ecologically similar habitats--even thousands of miles apart.

Wrasses collected only 360 km apart along the Brazilian coast were genetically more distinct than were fish collected 4200 km apart, from Fernando de Noronha island off of the Brazilian coast and St. Croix in the Caribbean.

The fact that evolutionary partitions correspond more closely to habitat type, rather than to conventional geographical barriers, indicates that local speciation events may overcome the homogenizing effect of migration in the ocean, vindicating Darwin's original ideas about the importance of ecological speciation in biodiversity evolution.


'"/>

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


Page: 1 2

Related biology news :

1. Discredited Korean embryonic stem cells true origins revealed
2. New research proves single origin of humans in Africa
3. The origin of perennial water-ice at the South Pole of Mars
4. Surprising origin of cells internal highways
5. Nobel scientists Craig Mello and John Mather to speak on origins of life and universe
6. Inflammation is at the origin and progression of diseases such as diabetes or cancer
7. Smithsonian scientists connect climate change, origins of agriculture in Mexico
8. Pediatric cancer stem cell identified: understanding the origin of ERMS
9. Spud origin controversy solved
10. The origin of the brain lies in a worm
11. Could USA presidential DNA trail reveal Middle-Eastern origins?

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: ecological origin species for tropical reef fish

(Date:10/17/2014)... . To date, ... overdoses, doctors are often limited to supportive therapy such as ... combination of drugs involved. So what can be done if ... ETH professor Jean-Christophe Leroux from the Institute of Pharmaceutical Sciences ... question. "The task was to develop an agent that could ...
(Date:10/16/2014)... can be cultivated efficiently, they are anything but ... by monoculture cultivation is becoming increasingly evident. Despite ... form and are regarded as the sole possibility ... quite wrongfully, finds Bernhard Schmid, an ecology professor ... novel form of agriculture and forestry. After all, ...
(Date:10/15/2014)... As our ability to assess the pandemic risk from ... developments, we must not allow ourselves to become complacent ... an international consortium of scientists. , Influenza pandemics arise ... have yet to develop widespread immunity – spreads in ... in the past 100 years, the worst of which ...
Breaking Biology News(10 mins):Emergency aid for overdoses 2Emergency aid for overdoses 3Plant communities produce greater yield than monocultures 2Plant communities produce greater yield than monocultures 3Scientists 'must not become complacent' when assessing pandemic threat from flu viruses 2
(Date:10/19/2014)... (PRWEB) October 19, 2014 The Latin ... the market in Latin America with analysis and forecast ... in 2013, and is expected to reach $2,366.8 million ... to 2018. , Browse through the TOC of the ... idea of the in-depth analysis provided. It also provides ...
(Date:10/19/2014)... Asian Automatic patient billing report defines and segments the ... The Automatic patient billing market in Asia is estimated ... a developing CAGR of 7.2% from 2013 to 2018. ... patient billing market, to get an idea of the ... the segmentation of this market in the same region, ...
(Date:10/19/2014)... The report "Unmanned Ground Vehicle ... Technology, Payload, Type & by Geography - Forecasts ... unmanned ground vehicle market into various sub segments ... sizes. The report also identifies the factors driving ... along with the adoption trends. , The unmanned ...
(Date:10/18/2014)... October 18, 2014 The report ... Trends and Forecasts to 2019", analyzes the global ... order to understand the industry details such as ... across various geographic regions. , Browse 81 Market ... Slides and in-depth TOC on “1,6-Hexanediol Market by ...
Breaking Biology Technology:The Latin American hardware encryption display market is expected to reach $2,366.8 million by 2018 - New Report by MicroMarket Monitor 2The Latin American hardware encryption display market is expected to reach $2,366.8 million by 2018 - New Report by MicroMarket Monitor 3The Asian Automatic patient billing market is estimated to grow to around $463.9 million by 2018 - New Report by MicroMarket Monitor 2The Asian Automatic patient billing market is estimated to grow to around $463.9 million by 2018 - New Report by MicroMarket Monitor 3Unmanned Ground Vehicle (UGV) Market Estimated to Reach $8.26 Billion by 2020 - New Research Report by MarketsandMarkets 2Unmanned Ground Vehicle (UGV) Market Estimated to Reach $8.26 Billion by 2020 - New Research Report by MarketsandMarkets 3Unmanned Ground Vehicle (UGV) Market Estimated to Reach $8.26 Billion by 2020 - New Research Report by MarketsandMarkets 4Unmanned Ground Vehicle (UGV) Market Estimated to Reach $8.26 Billion by 2020 - New Research Report by MarketsandMarkets 51,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 21,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 31,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 41,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 5
Cached News: