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Coca Pesticide A Direct Threat To Bolivian Bees

On the lush steep slopes around Coroico, beekeeper Villca has no doubt about the immediate threat to his bees.

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bolivian bees
Nancy Carlo Estrada works with her bees outside of Coroico, Bolivia, Dec. 20, 2018. VOA

High up in the Bolivian cloud forest, a woman tends to her bees, smoker in hand, working from hive to hive under a canopy of leaves to delicately gather panels of honeycomb. It’s a bucolic scene that experts say won’t last, for the bees are dying.

The culprit — as in so many other cases across the world — is pesticide. The difference in Bolivia is that pesticide use, along with the coca plantations it is being used to protect, is on the rise.

Environmentalists and beekeepers like Rene Villca say the bee population is being decimated by massive and intensive use of chemical pesticides to protect the region’s biggest cash crop.

Here in the idyllic Nor Yungas region north of the cloud-high capital La Paz, the pesticides are taking a toll on Villca’s hives.

“Of the 20 hives I have, 10 are producing normally and 10 are not.”

Bolivian Bees
Nancy Carlo Estrada works with her bees outside of Coroico, Bolivia, Dec. 20, 2018. VOA

On another part of the mountain where Nancy Carlo Estrada tends to her bees, a canopy of protective netting around her head, Exalto Mamami wades through a waist-high coca plantation, pumping out liquid pesticide from a canister on his back, face covered with a long cloth against harmful blowback from the spray.

He is all too aware of the pesticide’s toxicity, but has other priorities.

“We use pesticides because the pests eat through the coca leaves and this affects our income. The plants can dry out and that way we as coca farmers lose out economically,” said Mamani.

The sale of coca leaves — the base component of cocaine — is legal in this part of Bolivia. They are sold openly for traditional use in the local towns. It is chewed, used for making teas, and in religious and cultural ceremonies.

According to the latest survey by the U.N. Office on Drugs and Crime, Bolivia has 24,500 hectares under coca cultivation, an increase of 7.0 percent in a year. The government is collaborating with the UNODC in alternate development programs but despite this, between 35 and 48 percent is destined for cocaine production.

Bolivian Bees
Nancy Carlo Estrada works with her bees outside of Coroico, Bolivia, Dec. 20, 2018. VOA

Coca cultivation expanding

On the steep slopes of the region’s valleys, the lush forest is pockmarked with small plots of coca arranged in terraces.

“The area of coca cultivation has expanded and the native forest has been reduced to alarming levels,” said Miguel Limachi, an entomologist at La Paz’s San Andres University.

Limachi says the expansion of coca cultivation has helped to destroy other plants that provide a natural defense against the coca-leaf pests, particularly the Tussock Moth.

In other parts of the Andes, the pale moth has been used as a biological weapon against coca cultivation.

“A monoculture is more at risk from pests or fungi because there is no longer native vegetation — there are no natural controllers,” Limachi explained. “And then more pesticides are used in higher concentrations.”

Bolivian Bees
It’s a bucolic scene that experts say won’t last, for the bees are dying.

Harmful organophosphates in the pesticides mean the bees — “a social insect and extremely organized,” according to Limachi — become disorganized, and less able to feed and care for larvae.

In recent years across the globe, bees have been mysteriously dying off from “colony collapse disorder” blamed party on pesticides, but also on mites, viruses and fungi.

The danger of increased pesticide use in the Bolivian highlands is that they “remain in the soil, on the surface of the plants and obviously contaminate all the organisms present — both the growers themselves, their children and their families, and the wildlife,” Limachi told AFP.

Pesticides are also used to protect other crops in the country such as coffee plantations and some tropical fruits.

‘Growers have no choice’

For Exalto Mamani, there is no other option but to use pesticides.

“Many of the coca growers are aware that we are affecting the environment with these chemicals, but we have no other alternative because the coca supports us and gives us the economy to support our family,” he said.

He says climate change has meant coca leaf pests are on the increase.

Limachi agrees that climate change has played a role in reducing bee populations.

“Very dry years and other years that have too much rain change the availability of flowers from which the bees use to feed the hives,” he said.

Other human factors also play a role, he said.

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“Electromagnetic pollution, the emission of cellular waves, microwaves, radios, television…all that can affect their communication and the operation of the hive because they interrupt processes such as food collection, care of the larvae or cleanliness of the colony,” said Limachi.

On the lush steep slopes around Coroico, beekeeper Villca has no doubt about the immediate threat to his bees.

“We hope that the coca producers realize the value of this golden insect,” he said. (VOA)

Next Story

Fireflies Are Facing Extinction Due To Habitat Loss, Pesticides and Artificial Lights, Reveals Study

Firefly experts viewed the widespread agricultural use of pesticides as another key threat to firefly survival

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Fireflies
Fireflies belong to a widespread and economically important insect group, with more than 2,000 different species spread out across the globe, said the study, published in the journal Bioscience. Wikimedia Commons

Researchers have revealed that fireflies are facing extinction due to habitat loss, exposure to pesticides and artificial lights.

Fireflies belong to a widespread and economically important insect group, with more than 2,000 different species spread out across the globe, said the study, published in the journal Bioscience.

To better understand what threats are faced by fireflies, the research team surveyed firefly experts around the world to size up the most prominent threats to survival for their local species.

“Lots of wildlife species are declining because their habitat is shrinking, so it wasn’t a huge surprise that habitat loss was considered the biggest threat. Some fireflies get hit especially hard when their habitat disappears because they need special conditions to complete their life cycle,” said the study’s lead author Sara Lewis, Professor at Tufts University in the US.

According to survey respondents, habitat loss is the most most critical threat to firefly survival in most geographic regions, followed by light pollution and pesticide use.

One surprising result that emerged from the survey was that, globally, light pollution was regarded as the second most serious threat to fireflies. Artificial light at night has grown exponentially during the last century.

“In addition to disrupting natural biorhythms – including our own – light pollution really messes up firefly mating rituals,” said the study’s co-author Avalon Owens. Many fireflies rely on bioluminescence to find and attract their mates, and previous work has shown that too much artificial light can interfere with these courtship exchanges.

Firefly experts viewed the widespread agricultural use of pesticides as another key threat to firefly survival. Most insecticide exposure occurs during larval stages, because juvenile fireflies spend up to two years living below ground or under water.

Forest Of Magic, Fireflies, Firefly, Night, Forest
Researchers have revealed that fireflies are facing extinction due to habitat loss, exposure to pesticides and artificial lights. Pixabay

Insecticides such as organophosphates and neonicotinoids are designed to kill pests, yet they also have off-target effects on beneficial insects. While more research is needed, the evidence shows that many commonly used insecticides are harmful to fireflies.

A few studies have quantified firefly population declines, such as those seen in the tourist-attracting synchronous fireflies of Malaysia, and the glowworm Lampyris noctiluca in England. And numerous anecdotal reports suggest that many other firefly species across a wide range of habitats have also suffered recent declines.

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By illuminating threats and evaluating the conservation status of firefly species around the world, researchers aim to preserve the magical lights of fireflies for future generations to enjoy. (IANS)