What if inedible gobies dethroned anchovies?


DECRYPTION – When the ocean was warmer, these tiny fish dominated off Peru. A scenario that risks repeating itself.

Looking at the past can sometimes predict the future. 116,000 to 130,000 years ago, during the last interglacial period, the temperature of the Earth was warmer than it is today. And by observing in the fossil records what happened at that time for the fishery resource, it is thus possible to have an idea of ​​what could happen in the future.

In this case it would seem that global warming and the associated oxygen depletion of the oceans can cause the disappearance of anchovies in favor of smaller species such as “gobiesWhich do not taste good and are too small for industrial fishing. This is the conclusion of an article published in Science, January 7.

Back in time

The researchers focused on the situation in one of the most fish-rich areas in the world, off the coast of Peru, in the Pacific, where the Humboldt current brings large amounts of nutrients to the surface. Renato Salvatteci, paleo-ecologist …

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