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

cording to our research, all of the skink species found only on Caribbean islands are threatened," Hedges said. "That is, they should be classified in the Red List as either vulnerable, endangered, or critically endangered. Finding that all species in a fauna are threatened is unusual, because only 24 percent of the 3,336 reptile species listed in the Red List have been classified as threatened with extinction. Most of the 9,596 named reptile species have yet to be classified in the Red List."

Hedges explained that there are two reasons why such a large number of species went unnoticed for so many years, in a region frequented by scientists and tourists. "First, Caribbean skinks already had nearly disappeared by the start of the twentieth century, so people since that time rarely have encountered them and therefore have been less likely to study them," he said. "Second, the key characteristics that distinguish this great diversity of species have been overlooked until now." Hedges also noted that many potential new species of animals around the world have been identified in recent years with DNA data. However, much more difficult is the task of following up DNA research with the work required to name new species and to formally recognize them as valid, as this team did with Caribbean skinks.

The other member of the research team, Caitlin Conn, now a researcher at the University of Georgia and formerly a biology major in Penn State's Eberly College of Science and a student in Penn State's Schreyer Honors College at the time of the research, added that researchers might be able to use the new data to plan conservation efforts, to study the geographic overlap of similar species, and to study in more detail the skinks' adaptation to different ecological habitats or niches. The research team also stressed that, while the mongoose introduction by humans now has been linked to these reptile declines and extinctions, other types of human activity, especial
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Contact: Barbara Kennedy
science@psu.edu
814-883-6930
Penn State
Source:Eurekalert  

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24 new species of lizards discovered on Caribbean islands are close to extinction
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