Navigation Links
Invasion of the island bats

Ever since the relationship between land area and number of species crystallized into a mathematical power function, islands and island archipelagoes have been thought of as biological destinations where species from large continents arrive and, over time, evolve into new species in geographic seclusion.

Since islands have many times fewer species than the continent, it seemed only logical that continents were rich sources from which islands drew only a small sample. Once isolated and with fewer species around, island organisms were thought to lose their competitive edge and so they hardly ever re-colonized the continent from which they originated.

These views suffered a severe blow recently when evolutionary studies of birds of the South Pacific and Caribbean lizards uncovered at least three separate cases of island-to-continent colonization. Then again, these few instances could be interpreted as the exceptions that prove the rule, anomalies easily explained by the unique circumstances of each case.

Analysis of bat DNA published in Journal of Biogeography reveal that several neotropical species descended from ancestors that evolved in the West Indies, and this pattern is consistent with fossils found throughout the region. As the culmination in the study of several independent bat groups, this article shows that reverse colonization is a feature of the entire Caribbean bat community, encompassing groups of bats as different from each other as aerial insectivores, nectarivores, and frugivores.

The evolution of Caribbean bats suggests that far from being isolated destinations, the West Indies have had a dynamic, two-way relationship with the Americas, exchanging species back and forth at different points in their geological history. This discovery further enhances the conservation importance of the West Indies, where habitat loss and climate change —embodied in the intensification of hurricanes?threaten natural habitats more acutely than on the continent.


'"/>

Source:Blackwell Publishing Ltd.


Related biology news :

1. Plant defenses prompt bacterial countermeasure in the form of island DNA excision
2. Supersized island of resistance genes discovered in an infectious bacterium
3. Global survey of lizards reveals greater abundance of animals on islands than on mainland ecosystems
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/29/2017)...  higi, the health IT company that operates the ... , today announced a Series B investment from ... The new investment and acquisition accelerates higi,s strategy to ... population health activities through the collection and workflow integration ... collects and secures data today on behalf of over ...
(Date:3/27/2017)... , March 27, 2017  Catholic Health Services ... Management Systems Society (HIMSS) Analytics for achieving Stage ... Model sm . In addition, CHS previously earned ... hospitals using an electronic medical record (EMR). ... high level of EMR usage in an outpatient ...
(Date:3/24/2017)... Research and Markets has announced the addition of the ... Industry Forecast to 2025" report to their offering. ... The Global Biometric Vehicle Access ... 15.1% over the next decade to reach approximately $1,580 million by ... and forecasts for all the given segments on global as well ...
Breaking Biology News(10 mins):
(Date:4/21/2017)... (PRWEB) , ... April 21, 2017 , ... ... recognized outstanding manufactures in 10 categories with over 30 nominees and well as ... Manufacturing presented the new award and the event was hosted by CompanyWeek and ...
(Date:4/21/2017)... ... April 21, 2017 , ... ... Bank, today announced first round funding to three startups through the UConn Innovation ... support to new business startups affiliated with UConn. , The UConn Innovation Fund ...
(Date:4/21/2017)... Muncie, IN (PRWEB) , ... April 21, 2017 , ... ... year to 11 high school graduates from across the nation. The scholarships are created ... of AMA member dues. , Scholarship criteria are set by the AMA Scholarship Committee, ...
(Date:4/21/2017)... ... April 21, 2017 , ... ... nourishing a range of emerging technology-based businesses, recently earned a $77,518 grant from ... , Founded in 2004, FITCI is Frederick’s first incubator. A non-profit corporation, ...
Breaking Biology Technology: