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New Rainforest Gecko Species Identified

New Rainforest Gecko Species Identified

Adam D. Leaché and Matthew K. Fujita used new DNA analysis techniques to determine that a species of West African rainforest gecko is very likely to be at least four distinct species. West African geckos have been seen for years, but they look so alike it was assumed they were the same species.

Leache said of their unusual discovery, “These rainforests are classified as one of the biodiversity hotspots on the planet, yet they are one of the most endangered areas on Earth, human deforestation is accentuating the process of habitat destruction.”

He and Fujita wanted to learn about the history of a belt of African rainforest that is 3,000 miles long. So they decided to sample the genes of various geckos in the vast region, to discover more about the habitat. What they found from identifying genetic differences among the 50 geckos collected from ten different forest patches, was that the genetic differences were matched to the different types of rainforest habitats. Rainforest gecko habitats over long periods of time had been disconnected from one another. The tiny differences in the geckos were thought to have emerged due to the variation in their habitats. The different species of geckos (which all look nearly identical) are now thought to have evolved over 100,000 years ago as their habitats became fragmented.

Leache has undertaken five expeditions to the African rainforests since 2003. He has been surveying reptiles and amphibians there. The work is difficult with a lot of hiking to isolated areas. Fujita used tissue samples to analyze the cells of the geckos. Five genes from the nucleus and one from the mitochondria were used for each gecko. Their statistical analysis reportedly produces a nearly 100 percent chance there are four or more gecko species, rather than the just one. Their work shows  biodiversity is both more abundant, and more subtle in that rainforest than previously known.

Image Credit: brian.gratwicke

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75 comments

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3:28AM PDT on Aug 10, 2012

great news!, thanks for the article... also shows us there is much more to know and discover on this incredible planet we live on

1:46AM PDT on Aug 3, 2012

Geckos are terrific little beasties. Thanks for the news.

11:53AM PDT on Jul 5, 2012

Very interesting. Thanks!

9:30AM PDT on Jul 5, 2012

thanks

4:59AM PDT on Jul 5, 2012

BEAUTIFUL little critter. THANKS

1:23AM PDT on Aug 29, 2011

great news! Glad to know there's more gecko!

3:28PM PST on Feb 28, 2011

Thanks :D i love geckos

5:33AM PDT on Aug 19, 2010

Interesting!

5:33AM PDT on Aug 19, 2010

Interesting!

5:35AM PDT on Aug 14, 2010

Awesome:-) Hope we find more!!!

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