Navigation Links
24 new species of lizards discovered on Caribbean islands are close to extinction
Date:4/29/2012

, are unique among lizards in that they produce a human-like placenta, which is an organ that directly connects the growing offspring to the maternal tissues that provide nutrients. "While there are other lizards that give live birth, only a fraction of the lizards known as skinks make a placenta and gestate offspring for up to one year," Hedges said. He also speculated that the lengthy gestational period may have given predators a competitive edge over skinks, since pregnant females are slower and more vulnerable. "The mongoose is the predator we believe is responsible for many of the species' close-to-extinction status in the Caribbean," Hedges said. "Our data show that the mongoose, which was introduced from India in 1872 and spread around the islands over the next three decades, has nearly exterminated this entire reptile fauna, which had gone largely unnoticed by scientists and conservationists until now."

According to Hedges, the "smoking gun" is a graph included in the scientific paper showing a sharp decline in skink populations that occurred soon after the introduction of the mongoose. Hedges explained that the mongoose originally was brought to the New World to control rats, which had become pests in the sugarcane fields in Cuba, Hispaniola, Puerto Rico, Jamaica, and the Lesser Antilles. While this strategy did help to control infestations of some pests; for example, the Norway rat, it also had the unintended consequence of reducing almost all skink populations. "By 1900, less than 50 percent of those mongoose islands still had their skinks, and the loss has continued to this day," Hedges said.

This newly discovered skink fauna will increase dramatically the number of reptiles categorized as "critically endangered" by the International Union for Conservation of Nature in their "Red List of Threatened Species," which is recognized as the most comprehensive database evaluating the endangerment status of various plant and animal species. "Ac
'/>"/>

Contact: Barbara Kennedy
science@psu.edu
814-883-6930
Penn State
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. Genetic markers for tracking species
2. Weeding out invasive species with classical biological control
3. Head and body lice appear to be the same species, genetic study finds
4. Ancient whale species sheds new light on its modern relatives
5. Plant DNA speaks English, identifies new species
6. A new pipewort species from a unique, but fragile habitat in India
7. European grasslands challenge rainforests as the most species-rich spaces on Earth
8. Hiding in plain sight, new frog species found in New York City
9. Hiding in plain sight, a new frog species with a weird croak is identified in New York City
10. Global warming threat to coral reefs: Can some species adapt?
11. New species of deep-sea catshark described from the Galapagos
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
24 new species of lizards discovered on Caribbean islands are close to extinction
(Date:9/30/2014)... do seedless watermelon, salmon, and strawberries all have in ... two sets of chromosomes and are diploid, these organisms ... sets of chromosomesseedless watermelon and salmon have 3 and ... While this might seem surprising, in fact most ... first discovered over a century ago, but only recently, ...
(Date:9/30/2014)... engineers, led by Clemson University associate professor Brian ... from the U.S. Department of Energy,s Experimental Program ... positive impact on South Carolina in the advancement ... , "Understanding the scientific and engineering needs for ... nuclear technologies is imperative if South Carolina is ...
(Date:9/30/2014)... German . FRANKFURT. ... in the world. Because they grow underground, people use trained ... of truffles is not only of interest to gourmets. A ... the Goethe University Frankfurt have discovered that the smell of ... trapped inside truffle fruiting bodies. , White truffles from the ...
Breaking Biology News(10 mins):Gene doubling shapes the world: Instant speciation, biodiversity, and the root of our existence 2Gene doubling shapes the world: Instant speciation, biodiversity, and the root of our existence 3Gene doubling shapes the world: Instant speciation, biodiversity, and the root of our existence 4Researchers get $5.25 million to advance nuclear technologies in South Carolina 2On the trail of the truffle flavor 2
... have designated a group of 13 ... (leishmaniasis), African Sleeping Sickness (African trypanosomiasis), ... Filariasis (elephantiasis), Onchocerciasis (river blindness), Drancunculiasis ... Ulcer, Trachoma). , These diseases have ...
... inserted into blood vessels, to better deliver beneficial genes ... of inflammation that often negates initial benefits. The new ... thin layer to bare metal surfaces, may have potential ... of metallic implants. , Cardiologists frequently treat heart disease ...
... An international team of scientists for the first time ... after it has encountered a single, new stimulus. The ... to peer within the living brain and explore short-term ... Galán, a leading author on the report who is ...
Cached Biology News:A New Era of Hope for the World's Most Neglected Diseases 2A New Era of Hope for the World's Most Neglected Diseases 3Bare metal stents deliver gene therapy to heart vessels with less inflammation in animal studies 2Team led by Carnegie Mellon University scientist finds first evidence of a living memory trace 2Team led by Carnegie Mellon University scientist finds first evidence of a living memory trace 3
(Date:10/1/2014)... September 30, 2014 Award winning ... announces four new-hosted collaboration bundles that combine ... high quality conferencing experiences for low, flat rate ... choose from, businesses have optimized solutions to meet ... include audio only minutes (1K, 5K, 10K ...
(Date:10/1/2014)... The U.S. Department of Labor has awarded ... as part of the Trade Adjustment Assistance Community College ... by the Department of Labor and Department of Education. ... E. Perez and Secretary of Education Arne Duncan announced ... to nearly 270 colleges across the country. , ...
(Date:9/30/2014)... in German . ... dots in a semiconductor layer. Quantum dots are small structures ... If a short laser pulse is fired at the photonic ... experiences a change in the electromagnetic field around it. This ... light by the dot. As soon as the refractive index ...
(Date:9/30/2014)... analog of one of nature,s most efficient light-harvesting ... led by Alejandro Briseno of the University of ... developing long-sought polymer architecture to boost power-conversion efficiency ... devices. , Briseno, with colleagues and graduate ... University and Dresden University of Technology, Germany, report ...
Breaking Biology Technology:SoundConnect Launches New Audio, Web and Video Bundles 2U.S. Dept. of Labor Awards SIUE Nearly $10-Million Grant 2U.S. Dept. of Labor Awards SIUE Nearly $10-Million Grant 3U.S. Dept. of Labor Awards SIUE Nearly $10-Million Grant 4Ultrafast remote switching of light emission 2Blades of grass inspire advance in organic solar cells 2Blades of grass inspire advance in organic solar cells 3
... CARLOS, Calif., Sept. 16 Nektar,Therapeutics, (Nasdaq: NKTR ... scheduled to present at the upcoming UBS 2008 Global ... New York Hotel on,Tuesday, September 23, 2008 at 10:30 ... a Webcast through a link posted,on the Investor Relations, ...
... Claims, WASHINGTON, Sept. 16 The U.S. ... to the State of Kentucky to,help defray costs ... may prove actual innocence. Awarded by the DOJ,s ... of five competitive awards provided to,Arizona, Texas, Virginia, ...
... 16 PharmAthene, Inc.,(Amex: PIP ) a ... threats, announced today that David P. Wright,President and ... the,UBS Global Life Sciences Conference on September 25, ... Grant Hyatt hotel in New York., PharmAthene,s ...
Cached Biology Technology:Department of Justice Provides States With Funding for Testing in Postconviction Cases 2
Phospho- (Ser) 14-3-3 Binding Motif (4E2) Mouse mAb...
Rat polyclonal to acetyl Salicylic Acid ( Abpromise for all tested applications)....
Drugs and NO-drug Rat Anti-conjugated Acetyl Salicylic Acid Polyclonal Antibody...
Rabbit polyclonal to UBC12 (rating: ****) ( Abpromise for all tested applications). Antigen: Synthetic peptide: RGGYIGSTYFER, corresponding to amino acids 169-180 of UBC12 Entrez Gene ID: 90...
Biology Products: