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DNA reveals the diversity of life hiding beneath the surface of the Mediterranean

2024-03-07T15:27:25.440Z

Highlights: DNA reveals the diversity of life hiding beneath the surface of the Mediterranean. A genetic technique makes it possible to identify marine species, including shy and discreet fish, such as sharks and rays. The technique was used that day aboard the semi-rigid boat of the Côte Bleue Marine Park, near the Calanques of Marseille. It consists of detecting, as at a crime scene, the footprints left by animals in Seawater. This article is reserved for subscribers. You have 85% left to discover.


DECRYPTION - A genetic technique makes it possible to identify marine species, including shy and discreet fish, such as sharks and rays.


In Carry-le-Rouet

It all started out of frustration:

The fish are more and more suspicious of humans, it is becoming very difficult to observe them during dives or even with cameras ,

says David Mouillot, professor in marine ecology in the Marbec research unit at the University of Montpellier.

In 2016, this observation led the scientist to use a new tool to inventory marine biodiversity: environmental DNA (or eDNA), which consists of detecting, as at a crime scene, the footprints left by animals in Seawater.

The technique was used that day aboard the semi-rigid boat of the Côte Bleue Marine Park, near the Calanques of Marseille.

About a hundred meters off the coast of Carry-le-Rouet (Bouches-du-Rhône), David Mouillot's team takes a DNA sample.

Fighting against the wind, Laure Velez, engineer now responsible for handling, slides a filtration capsule into the water, connected by…

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Source: lefigaro

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