the decline of frogs promotes malaria

The degradation of ecosystems is particularly harmful to amphibians and in particular to frogs. As a direct consequence, infections transmitted by mosquitoes are on the rise.

In recent years, there has been an upsurge in epidemics of several diseases transmitted by mosquitoes despite the progress of science in the treatment and prevention of these infections. An upsurge in cases that would be directly linked to the decline in populations of frogs in certain regions of the world.

Malaria and malaria explode

It is research published in the scientific journal Environmental Research Letters that links the decline of amphibians to the increase in cases of mosquito-borne diseases. Researchers have indeed noticed an explosion of cases of malaria and malaria in two Central American countries: Costa Rica and Panama.

They then based themselves on the decline, even the disappearance, of certain species of amphibians in the sector to make the link between these two phenomena.

Fewer frogs, more mosquitoes

Researchers at the University of California have indeed noticed that since the 1980s, dozens of frog species have disappeared. A phenomenon that intensified in the Central American region in the early 2000s, with the appearance of a pathogenic agent, the fungus Batrachochytrium dendrobatidis, which accelerated the disappearance of 90 species of amphibians and the decline of 500 of them. The expansion of this pathogen would have been favored by humans, and in particular by the trafficking of amphibians or the introduction of non-endemic species.

Since this fungus wreaked havoc, malaria and malaria have made a comeback in Costa Rica and Panama. This situation can be directly explained by the fact that the decline in populations of frogs, large consumers of mosquitoes, automatically leads to an increase in mosquito populations.

Protecting ecosystems to protect humans

For the researchers responsible for the study, it is essential to integrate the notion of environmental protection into public health policies. In addition to air pollution, which is increasingly deadly, failure to protect ecosystems could have serious repercussions by favoring the appearance of new diseases and their spread.

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