Black Mambas Rack Up Heavy Metals in Their Scales, Helping to Track Urban Pollution
Black Mambas have always been trapped with a notorious reputation in Africa, but they can give a helping hand (or rather, a scale) to help follow pollution. Indeed, these snakes accumulate heavy metals on their scale and, therefore, their bodies stored vital information on pollution in a given environment.
A study published in Environmental pollution Explain how black Mambas are able to guide researchers on pollution levels in urban environments. In doing so, this can also help reshape severe attitudes with regard to black Mambas in a deeper appreciation for their role in maintaining a balanced ecosystem.
Mortal, but misunderstood black Mambas
Black Mambas, mainly dispersed across the east and southern Africa, are among the most feared animals of the continent because of their mortal venom, some drops of which are enough to kill a person. They are also known to be the fastest snake in Africa, capable of sliding at around 12 mph on earth.
People have become more and more weary of black Mambas in urban areas, where snakes can hide in properties where waste has attracted rats to eat. This fear of black Mambas has caused many false myths, like the one who accuses them of having set an ambush to people in cars when they reach a destination.
In truth, black Mambas are not really for blood. These are rather anti -social and reclusive reptiles, only biting humans if they feel threatened. Nick Evans, an author of the recent study which launched the organization of conservation of amphibians and reptiles of Kwazulu in South Africa, says that there are about 3 to 5 bites of black Mamba per year.
“Almost all patients survive, unless they go to the hospital. Some bites are dry stings, warning bites where no venom is injected,” Evans said in a statement.
Learn more: What to do (and not to do) if a snake bites you
Metal scales
The story on black Mambas now has a chance to achieve a positive rotation, because researchers have demonstrated their value in monitoring urban pollution.
In the recent study, researchers have examined the accumulation of heavy metals on black Mambas collected in the South African coastal city of Durban. They analyzed scales cut off from snakes withdrawn from domestic, industrial and commercial properties in Durban, as well as samples of died snakes in road accidents or human conflicts.
Their tests have found heavy metals such as lead, arsenic, cadmium and mercury in the scales of the snakes. According to the researchers, snakes in industrial and commercial areas had much higher metal levels than those of natural reserves and green spaces.
“Black Mambas are common in the Durban region, and individuals often have lived in the same refuge for years,” said author Graham Alexander, herpetologist at Wits University, in the press release. “If the body tissue of individuals contains high levels of heavy metals, it is a strong sign that the local environment is threatened.”
Black Mambas absorb these heavy metals after consuming smaller animals like birds and rodents, which ingest the pollutants of the food they eat. The pollutants of the consumed prey finally accumulate in the body tissues of the black Mambas.
The unknown value of black Mambas
The study has shown that details on urban pollution can be obtained from black Mambas without harming them, informing researchers about the need for more green spaces in cities.
In addition to their help to fight pollution, black Mambas also have an important role to play in ecosystems; By controlling the populations of rodents, they inadvertently protect the cultures of the propagation of diseases transmitted by rodents.
The researchers finally hope that with this information, the perception of the public of black Mambas can be repaired to a certain extent.
“People are naturally afraid of Mambas because they are one of the most dangerous snakes in Africa, but if we treat them correctly, they can be a precious tool to assess pollution levels,” said Alexander. “Snakes in general can play a precious role as a biomarker for environmental health, and should preferably be left in peace in their natural environment.”
Learn more: Universal Antifnom can be possible thanks to a man with hundreds of snake bites
Sources of articles
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