Molecular sequencing technology and the origins of biodiversity

September 17, 2012
Molecular sequencing technology and the origins of biodiversity
Credit: Thinkstock

Evolutionary relationships among a group of arthropods from Gondwana, a supercontinent that existed between 510 and 180 million years ago, were investigated by EU scientists using molecular sequencing technology. The results provided researchers with a clearer picture of the origins of biodiversity and why species arise in a particular place.

The 'Origin of biodiversity in Gondwanan Arthropods: from phylogeography to phylogenomic' (Gondwana) project set out to explain current patterns of species' richness and why organisms originate in a specific area. In order to understand how present diversity emerged and responded to past climate change events it was essential to test a number of different hypotheses. The resulting data can enable scientists to predict the future and how best to prioritise strategic conservation objectives and manage biodiversity.

Scientists generated and analysed data from every aspect of biodiversity research, focusing on objectives related to the different levels of organisation found in evolutionary biology. studies investigated the effect of ecological and in forming and maintaining distinct lineages and observed and the flow of genes from one population of the same species to another.

Studies at the phylogenetic level combined information from the fossil record with molecular sequence data to investigate the timing of the origin and diversification of different groups. This provided a framework for studying macroevolutionary processes and compensated for gaps in the fossil record. In addition, researchers were able to characterise the diversification of species through time in a given region and to examine how past climate and geographical events can be related to shifts in species diversification.

Threat status alone should not be the only factor when assessing the importance of conserving different species as molecular sequencing in modelling can help scientists predict shifts in geographic range due to climate change. Therefore, scientists were able to use findings from the Gondwana project to provide a greater understanding of habitat loss, climate change and other drivers of biotic change.

Evolutionary studies such as Gondwana can help prioritise geographical areas for carrying out conservation activities. Knowledge about where unique evolutionary events or processes occurred can complement diversity information thereby enabling scientists to preserve existing species as well as the processes that generate this diversity.

Explore further: Caribbean coral reef protection efforts miss the mark

Related Stories

Biodiversity can promote survival on a warming planet

November 4, 2011

Whether a species can evolve to survive climate change may depend on the biodiversity of its ecological community, according to a new mathematical model that simulates the effect of climate change on plants and pollinators.

Protecting living fossil trees

March 2, 2012

Scientists are working to protect living fossil trees in Fiji from the impact of climate change with cutting-edge DNA sequencing technology.

Recommended for you

A common mechanism for human and bird sound production

November 27, 2015

When birds and humans sing it sounds completely different, but now new research reported in the journal Nature Communications shows that the very same physical mechanisms are at play when a bird sings and a human speaks.

Study suggests fish can experience 'emotional fever'

November 25, 2015

(—A small team of researchers from the U.K. and Spain has found via lab study that at least one type of fish is capable of experiencing 'emotional fever,' which suggests it may qualify as a sentient being. In their ...


Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.