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Insect 'soup' serving up rapid biodiversity monitoring
Date:8/7/2013

Griffith University researchers have taken part in an international study which has discovered a fast but accurate means of identifying changes to the biodiversity of a region.

And the secret lies in crushed up insect "soup".

Traditionally, many thousands of hours have been spent by researchers gathering, classifying and recording insects and animals in order to understand the natural ecology of a region. Any changes to the biodiversity of that area could then be determined only by more labour-intensive collecting and recording.

Research published today in the journal Ecology Letters, however, shows that a process known as 'metabarcoding' is much faster and yet still as reliable as standard biodiversity datasets assembled with traditional labour-intensive methods.

Griffith University's Professor Roger Kitching, Dr Louise Ashton, and Dr Aki Nakamura took part in the study, along with scientists from UK, China, and Malaysia.

Chair of Ecology in Griffith's School of Environment, Professor Kitching said the breakthrough means that changing environments and endangered species can be monitored more easily than ever before.

"Every living organism contains DNA, and even small fragments of that DNA can be used to identify species," Professor Kitching said.

"Each soup combines hundreds to thousands of insects caught using insect traps, but this poses no threat to endangered species because the numbers captured still amount to only a tiny fraction of their overall populations. We can then extract the DNA of all those insects from the 'soup'."

Because the process uses sequencers that are relatively cheap, the process can be repeated often, say weekly or monthly.

"If the environment changes for the better or for the worse, we will know about it because the mix of DNA present in the "'insect soup"' will also change," Professor Kitching said.

"Thereby we have a rapid, sensitive
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Contact: Helen Wright
helen.wright@griffith.edu.au
047-840-6565
Griffith University
Source:Eurekalert

Page: 1 2

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