Category Ecology

Did you know some organisms emit light to communicate, to defend themselves against predators and to lure prey and to mate?

Sunlight does not penetrate 200 ft below the ocean’s surface, so the deep sea is essentially a cold, dark place. But if you dive underwater and go deep down, you may witness a blue-green glow here or a ghostly flicker there. And if you are lucky or a ghostly flicker there. And if you are lucky enough, you may witness lightshows of red, green, and blue. Where are these lights coming from? From marine organisms. This phenomenon of emitting light due to a chemical reaction within a living organism is called bioluminescence.

Shining stars

Though marine bioluminescent organisms live throughout the water column, from the surface to the seafloor and from near the coast to the open ocean, they are extremely common in the deep sea. As many as 90% of all the organisms in the deep sea are bioluminescent. Its the norm there, say scientists. Some of the bioluminescent marine organisms include fish, jellyfish, bacteria, algae, marine worms, crustaceans (shrimp, lobster, krill etc.), sharks and cephalopad (octopus, squid, cuttelfish). In fish alone, there are about 1,500 known species that emit light.

Thought rare, bioluminescence be witnessed among a few terrestrial organisms as well. They include firefiles, land snails, glow worms and some types of fungi. Some forms of bioluminescnence are brighter or exist only at night.

Chemical reaction

How is the light produced? The light is produced by a chemical reaction involving light-emitting molecule luciferin and light-emitting enzyme luciderase found in the organisms. When luciferase interacts with luciferin in the presence of oxygen, light is produced.

But not all bioluminescent reaction involve luciferase. Some involve a chemical called photoprotein instead of luciferase.

Some creatures produce their own light while others such as squid foster a symbiotic relationship with certain bacteria that live on the organism and emit light to help the host. (The host organisms provide these bacteria a safe home and sufficient nutrition. In exchange, the hosts use light produced by the bacteria for camouflage, prey or mate attraction.)

Colour choice

Most marine organisms emit light in the blue-green part of the visible light spectrum. These colours are more easily visible in the deep ocean. Land organisms also exhibit blue-green bioluminescence, but there are those that glow yellow such as fireflies.

A few organisms can glow in more than one colour. The head of the railroad worm(a larvae of a beetle species) glows red while its body glows green. The bioluminescent colour is a result of the arrangement of luciferin molecules and the type of the luciferase enzyme.

What the purpose?

Bioluminescent organisms often light up in response to an attack or a disturbance such as touch, waves or the passing of a boat (e.g: dinoflagellate); some use it to hunt prey (anglerfish has a fleshy growth on its head, which, when lit up, looks like a fatty, juicy worm. The fish uses it to attract prey); to find mate (the female of Bolitaena pygmaea), a deep-sea octopus species, lights up around the mouth to attract mate) and to communicate (scientists think the lanternshark uses bioluminescence to communicate to other members of its species). Some use bioluminescence as a defence tactic to surprise or confuse a predator (many types of jellyfish and squids) or to camouflage (hatchet fish and many shark species produce light to match their background).

 

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What is the current issue with sea urchins along the California coast?

California has been in the news for all the wrong reasons. On the one side, this U.S. State has been fighting a series of wildfires that have destroyed acres of forests and displaced thousands of people. On the other, it’s facing threat from the explosion of a marine species called the purple sea urchin. These urchins have chomped off 90% of the bull kelps along the coastline of California and neighbouring State Oregon, putting the entire coastal ecosystem out of whack.

Kelps are a type of a large brown seaweed that grow in shallow, nutrient-rich saltwater, near coastal fronts around the world. They offer shelter to a host of sea creatures. The coastal water of northern California was once home to a dense coverage of kelps. But today, they have been replaced by purple sea urchins. The vast stretch of the seafloor is barren and is dotted with nothing but tens of millions of these spiny orbs.

Sea urchins are typically spiny, round creatures, inhabiting all oceans. They belong to the phylum Echinodermata – the same group or sea stars, sand dollars, sea lilies and sea cucumbers.

The purple sea urchin – Steongylocentrtus purpuratus – is voracious, kelp-eating species. They are particularly fond of bull kelps. They are native to California’s coast, and have traditionally been found in smaller numbers. But now, from California, the population of the sea urchins has spread to Oregon reef, where their count has been found to be 350 million – more than a 10,000 % increase since 2014. These millions and millions of sea urchins are eating away not just kelps but also anemones, the sponges, flesh red algae and even sand, say scientists.

Cascade of events

Sea water wasting

The trouble began in 2013, when a mysterious disease began to spread among starfish. Scientists are not sure what caused the diseases in sea stars. It wiped out tens of millions of the species. This included sunflower sea water, which is the only real predator of the purple urchin. With no predators to keep the population in check, the hitherto harmless purple sea urchins began to grow and multiply, eating everything in sight. Destruction of kelps, their primary source of food, left other creatures depended on it to starve and die. Meanwhile, purple sea urchins’ population grew 60-fold between 2014 and 2015.

Double whammy for kelps

The kelps had already been struggling because of warmer-than-usual waters in the Pacific Ocean. Warm waters are nutrient poor, and as a result, the kelp cannot grow high enough to reach the surface of the water for photosynthesis. The 2014 record-breaking heatwave and subsequent El Nino condition in 2015 fuelled their decline further.

Ecosystem collapses

As the kelps population declined, 96% of red abalone, a type of sea snail that feeds on kelp, died from starvation, by 2017. According to a study, red sea urchins, a meatier relative of purple urchins, are also declining due t lack of food kelps.

Fisheries affected

The devastation is also economic. Until recently, red abalone and red sea urchins supported a thriving commercial fishery in both California and Oregon. But the mass moralities of red abalone led to its closure in 2018. The commercial harvest of red sea urchins in California and Oregon also has taken an enormous hit.

Can kelps rebound?

  • Bull kelp is one of the fastest-growing algae on Earth and if the cooler water temperatures return, the seaweed may be able to bounce back. But the excessive numbers of purple sea urchins will still pose a problem.
  • The only way to restore the kelp is to remove the purple sea urchins. But to remove the ones in Oregon alone, it would take 15 to 20 years, by scientists. Without the kelps, purple sea urchins by themselves may decline. But again it could be a long wait.
  • Conservationists suggest urchin farming as a solution to the problem. It involves physically removing large numbers of purple sea urchins from the seafloor to be flattened up in controlled environments for human consumption.
  • However, even if the kelps rebound, it may take decades for the entire ecosystem to bounce back to its past glory.

 

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What’s the EIA draft 2020?

Seeking ti replace the 2006-version of the law, the Union Ministry of Environment, Forest and Climate Change unveiled the draft to the public in March 2020, a day before the COVID-19 lockdown was put in the place. The new draft has drawn criticism from environmentalists and experts across the country. They allege that many provisions in it are ‘anti-environment’ and ‘pro-industries’ and is diluting the very purpose of the EIA. While the government has denied their claims, it has assured to take into consideration the feedback submitted by the public to the Ministry on August 11. Here, we list four of the main contentions identified in the new draft.

Post-facto clearance

The EIA new draft 2020 allows post-facto clearance, which means that even if a project has come up without environment clearances, it could carry out operation and the developers can choose to obtain a clearance after the project is initiated. For instance, national highways expansion are exempted from obtaining prior environmental clearance. Critics say even if the environmental clearance for such project is rejected ultimately, the damage done to the environment would be irreplaceable.

Further, those units that have been already operating illegally without environmental clearance can now get clearance and become legal units by simply submitting a remedial plan and paying the prescribed penalty, though hefty.

Expemtion from EC

The draft has exempted almost 40 types of projects such as clay and sand extraction or digging wells or foundations of building, solar thermal power plants and common effluent treatment plants from prior EC.

Further, a mining project can now get environmental clearance for a period of up to 50 years in the beginning itself, which, in the 2006 version up to 30 years only.

The public consultation process will be weakened

The draft said public consultation is exempted for many projects, including modernisation of irrigation; building, construction and area development projects; inland waterways; expansion or widening of national highways and all projects concerning national defence and security or involving “other strategic considerations” as determined by the central government.

The new draft also suggests reducing the number of days within which the members of the public can submit their concerns. From 30 days, it has now been reduced to 20 days.

Reporting of violations

According to the new draft, the violations of environmental laws by any project can be reported by a government authority or the developer of the project themselves.

This means that the members of the general public (who are usually the affected) or environmental activists cannot flag a project for violating the norms.

 

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What was recently found in the ocean?

Scientists discovered a new species of marine creature in the deepest trench on Earth. In a normal scenario, this would have called for celebration. But this situation isn’t normal. Because the researchers also identified plastic in its body.

The amphipod is just two inches long and was caught at a depth of 20,000 feet in the Mariana Trench. The Mariana Trench in the Pacific Ocean is the deepest point on Earth’s surface, reaching more than 36,000 feet deep. Clearly, even this remote environment is not exempt from the impact of plastic pollution. The tiny creature had been found to have ingested tiny pieces of debris known as microplastics. The material they identified was polyethylene terephthalate (PET), common plastic widely used in food and drink packaging. To highlight the scale of marine plastic pollution crisis, researchers decided to name it Eurythenes plasticus. The creature is now one of the 240 known species to have been recorded ingesting plastic.

Plastic debris is now common throughout the world’s oceans. In fact, a 2015 study found that around eight million tones of the material enter the oceans every year. Once in water, this plastic can break down into smaller and smaller pieces, eventually becoming microplastics – frequently ingested by marine animals. Thousands of animals, from sea birds to whales, die every year from consuming or getting caught in plastic.

 Pollution in Alarming scale

  • According to a 2017 study, humans have produced 18.2 trillion pounds of plastic since the 1950s. Only 9% of it has been recycled and another 12% has been burnt. A majority of the plastic ends up in landfills and the oceans. The debris is often carried by wind and rain into our drainage networks and eventually into the sea.
  • A report released by Ellen MacArthur Foundation at the World Economic Forum in 2016 estimated that at least eight million tones of plastics leak into the ocean – this is equal to dumping the contents of one garbage truck into the ocean every minute. The report further says the ocean is expected to contain one tonne of plastic for every three tonnes of fish by 2025, and by 2025, there will be more plastic than fish by weight in the ocean.

What are microplastics?

Most plastic in the ocean break down into very small particles called microplastics and make their way into the system of marine animals. Plastic particles that are less than five mm long are called microplastics. Microplastics come from a variety of sources, and are of two types – one that are manufactured (microbeads) and the other that are derived from the breakdown of larger plastic debris. Besides water, microplastics have been found in soil and air.

How plastic affects marine ecosystem

Sea turtles and other marine creatures mistake plastics for food (such as jellyfish) and ingest them. This causes blockage in their digestive system, leading to their death. Studies have found that plastic pollution can also affect sea turtles’ reproductive system.
In sea birds, plastic ingestion reduces the storage volume of the stomach, causing starvation and death.
Besides ingestion, marine mammals get tangled up in plastic, leading to their death.
Plastic may also get transferred along the food chain – from fish to bigger fish or marine mammals and finally to human seafood consumers.

Invisible threat

Marine species also face the invisible threat of plastic-derived chemicals. It was long held that plastic broke down only at very high temperatures and over hundreds of years. A study in 2009 showed that some plastics decompose rapidly in the ocean, even within a year of the trash hitting the water. The degrading plastics also leach potentially toxic chemicals such as bisphenol A into the seas, possibly threatening ocean animals, and human, who ultimately consume some of these creatures.

  • Direct toxicity of plastics comes from lead, cadmium and mercury added to them while manufacturing plastic products. These toxin s have been found in many fish in the ocean.
  • When expanded polystyrene, used especially for making food containers, breaks down, the tiny polystyrene components start to sink, as they are heavier than water. Exposure to polystyrene can cause irritation of the skin, eyes and the upper respiratory tract in humans. Acute exposure may also result in gastrointestinal effects.
  • Bisphenol A (BPA) has been shown to interfere with the reproductive systems of animals. In humans, even low doses of bisphenol A can impair immune function and cause cancer, obesity, diabetes and hyperactivity, among other problems.
  • Diethylhexyl phthalate (DEHP) contained in some plastics, is also carcinogenic (cancer-causing).

 

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Why are Locusts causing so much of international anguish?

Locusts are large insects. They are special grasshoppers. They have big hind legs used for jumping. All grasshoppers (except the long-horned, ones) belong to the Acridoidea family, and the most important Locusts are all in the family Acrididae. Locusts can change their habits and, behaviour when they occur in large numbers their numbers rise they stay together in dense groups called, “swarms.” These are groups of adults. Locust groups are called “bands” when; they consist of the wingless young ones, commonly called ‘hoppers’. Locust swarms migrate over great distances, and, this behaviour differentiates them from other grasshoppers. When, locusts are in small numbers they live their individual lives like ordinary grasshoppers. These could be small groups that stay in one place. Some species of locusts are regarded as intermediate between grasshoppers that live alone and typical locusts that do not.

Locusts have the capacity to multiply rapidly and produce groups or swarms in special circumstances. Their population explosion can be started by unusual weather conditions or changes in land use. This is what happened this year. According to the UN, the heavy infestation this year can be traced back to cyclone season of 2018-19 that brought heavy rains to the Arabian Peninsula. This allowed at least three generations of “unprecedented breeding” and no one noticed it. Swarms have since spread out into South Asia and East Africa. David Phiri, a FAO regional, coordinator said that whew weather conditions are good for locust breeding, there is a high probability that the insects will continue to spawn rapidly. This year it may go on till April. Locusts have probably been man’s enemies ever since humans began to grow crops. The Old Testament (Bible) and the Koran mention the desert Locust. You can see carved, images of Locusts in Sixth Dynasty (2420-2270 BC) tombs at Saqqara in Egypt. Now, in countries like Somalia, Locusts can determine whether people will have sufficient food or starve. The damage they cause can be mild to very severe. This depends on whether the swarms are moving about quickly or whether they stay for several days in one area.

FAO describes the desert Locust, schistocerca gregaria, as the world’s “most dangerous migratory pest, with a, voracious appetite unmatched in the insect world.” Swarms can vary from, less than 1 sq km (0.38 square miles) to several, hundred. Each square kilometre can contain at Least 40 million insects, according to FAO. FAO’s Western Africa joint Locust control force was established, in 2016 and includes Mauritania, Algeria, Burkina Faso, Morocco, Niger, Senegal, Chad, Libya, and Mali.

 

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What are locusts and how do they pose a threat to food security?

The word “locust’ has been in the environment sections of all newspapers for some time. On some days, news about them appeared on the front page. Here are samples.

[1] ‘The UN’s Food and Agriculture Organisation (FAO) said earlier this week that Somalia and Ethiopia were facing a Locust infestation that is destroying crops and threatening food security in the region. On Saturday, Somali farmers urged their government and the international community to help protect crops from the invasion.”

[2] ‘The FAO has reported farmers are facing “devastating threat” to their crops.” “A single locust plague can lead to a loss of 170,000 tonnes of grain, enough to feed one million people for a year,” the organisation said. The insects have already destroyed at least 175,000 acres of farmland in Somalia and Ethiopia, according to the FAO.

[3] A swarm of what appeared to be locusts forced a passenger plane off its course in Ethiopia. Pilots were preparing to land the Ethiopian Airlines flight from Djibouti to Dire Dawa when clouds of insects slammed into the plane’s engines, wind-shield and nose. They tried in vain to clean the windscreen with the plane’s wipers. Thirty minutes later the plane landed safely in the capital Addis Ababa.”

[4] “Somalis fight invading Locusts by eating them. Somalis are battling the worst invasion of Locusts in 25 years. They have resorted, to eating the insects to stop them from destroying crops. Local media reports have shown, residents central Somalia frying Locusts and serving them with rice, with one man staging the desert insects are tastier than fish.. Another man told Universal Somali TV he believes eating the insects could, help reduce his back pain and blood pressure, while some residents have apparently urged local restaurants to introduce locust dishes.”

[5] “Mauritania is planning to use drones to monitor the Locust swarms in the locust swarms in their country.” ‘The drones will track and monitor desert Locusts and instigate early-warning operations before the swarms arrive so that appropriate action can be taken,” said a report. The Latest round of tests, announced, in September 2019, will represent a “critical stage” in the fight against the locust plague, Secretary-General of the Mauritanian Rural, Development Ministry Ahmedou , Ould Bouh said.

This year’s tests are expected to confirm whether improvements made to drones wilt demonstrate their usability in the harsh desert conditions, and pave the way for their wider use in the region.

[6] “Pakistan declared an emergency earlier in February, 2020, saying locust numbers were the worst in, more than two decades. The Chinese government announced, recently it was sending a team of experts to Pakistan to develop “targeted programmes” against the Locusts.” They would send ducks to control the numbers of Locusts. “An agricultural expert behind the scheme says a single duck can eat more than 200 locusts a day and can be more effective than pesticides. Lu Lizki, a senior researcher with the Zhejiang Academy of Agricultural Sciences said that the ducks are “biological weapons”. He said that while chickens could eat about 70 Locusts in one day a duck could devour more than three times that number. After a trial, the ducks would be sent to Pakistan’s worst-affected areas of Sindh, Balochistan and Punjab provinces. “China could, deploy 100,000 ducks to neighbouring Pakistan to help tackle swarms of crop-eating locusts.”

However, a professor from the China Agriculture University, who is part of the delegation to Pakistan, questioned, whether the ducks would be suited to the mainly arid conditions where the Locusts are a problem. “Ducks rely on water, but in Pakistan’s desert areas, the temperature is very high,” Zhang Long told reporters in Pakistan.”

 

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Should the cheetah make a comeback?

India was once home to tens of thousands of Asiatic cheetahs. But overhunting and habitat destruction pushed the animal to the brink. In 1947, Maharaja Ramanuj Pratap Singh Deo of Koriya (now in Chhattisgarh) reportedly killed the last known Asiatic cheetah in India. In 1952, the cheetah was officially declared extinct in India.

But with the Supreme Court having cleared a proposal to introduce African cheetahs on an experimental basis, India may soon welcome a bunch of the spotted big cats from Namibia. But before that the authorities will have to identify a suitable habitat for the programme, assessing factors such as prey availability and the risks of human-cheetah conflict.

Among the sites that have been suggested for the relocation are the Kuno-Palpur Wildlife Sanctuary in Madhya Pradesh, the Velavadar National Park in Gujarat and the Tal Chapar Sanctuary in Rajasthan.

This is not the first time that the Indian government has tried to bring back the Cheetah. In the 1970s, officials tried to secure Asiatic cheetahs from Iran. But negotiations hit a roadblock after the Islamic Revolution of 1979 in Iran. (Today, Iran is home to the world’s last stand of Asiatic cheetahs-fewer than 50 individuals.) In 2001, scientists came up with a proposal to clone Asiatic cheetahs, but the plan fell through for various reasons.

The focus then shifted to importing African cheetahs, a distinct subspecies from the Asiatic cheetah, found in decent numbers throughout Africa. But this approach has received mixed reaction from conservationists and scientists. While some welcome it, others question the feasibility of the project.

ABOUT CHEETAHS

  • Cheetahs inhabit wide, open grasslands and arid habitats such as scrub forests.
  • They have a pale yellow coat with black dots on the upper part, while the underbelly is white. A cheetah can be identified by its spots and the black tear-like streaks on its face.
  • These cats have long tails, which enable them to balance while running fast.
  • The cheetah is the world’s fastest land mammals. It can reach a speed of 112km/h in just three seconds.
  • Cheetahs are carnivores and live off animals such as antelopes, rabbits, warthogs, springboks and birds.
  • They are usually found in groups, consisting of either a mother and her cubs, siblings or a group of males that live and hunt together.
  • The vast majority of cheetahs now live in Africa, while the Asiatic cheetah subspecies comprises a population numbering less than 50 in Iran and is considered critically endangered, according to the International Union for Conservation of Nature’s (IUCN) Red List of Threatened Species.
  • The population of cheetah is declining due to human-wildlife conflict, decline of prey, loss of habitat and illegal wildlife trade.

HOW CHEETAHS BECAME EXTINCT IN INDIA

Cheetahs are fast but docile by nature. These two traits sealed the fate of the animals in India. The spotted big cats had been hunted and captured indiscriminately since the 1500s. Kings across the country captured thousands of them from the wild to be tamed as trained to race and hunt animals such as antelope. The Mughal emperor Akbar is said to have kept 1,000 in his royal menagerie. But the inability of cheetahs to breed in captivity meant that wild cheetahs had to be constantly captured from their natural habitat. This led to a steady drop in their population. When the British colonists arrived in India, cheetahs were already scarce. For their part, the British degraded grasslands across India, leading to the cheetah’s eventual extinction in 1952.

THE DEBATE OVER THE CHEETAH INTRODUCTION PROGRAMME

Against

  • Conservationists believe that introducing African subspecies to India could affect their genetic make-up. Substituting one subspecies for other risks erasing valuable genetic adaptations, they say. African cheetahs may not be able to adapt to the grasslands of India.
  • India does not have the kind of grassland habitats it once had. They have been replaced by agricultural land or encroached upon by people over the past few decades.
  • The proposed habitats in India are not large enough to accommodate cheetahs and the areas do not have enough prey to sustain the big cats.
  • Some conservationists say that the plan to introduce cheetahs is a case of misplaced priorities. India should rather focus on conserving endangered species already living in the country instead of reviving an extinct species.

For

  • Proponents of the cheetah introduction programme are positive that African cheetahs can adapt to Indian condition.
  • They believe that the cheetah conservation programme could return the grasslands back to their past glory. While conserving the cheetahs, efforts will be made to save the grasslands ecosystem and biodiversity will be restored.
  • If cheetahs are introduced successively, India will be home to all of the big cat species in the Old World: tigers, lions, leopards, snow leopards and cheetahs.

 

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Why is wildlife trade a matter of concern?

Species loss

Wildlife trafficking threatens the survival of some of the Earth’s most iconic species. For instance, between 2014 and 2017, more than 1,00,000 African elephants were killed for ivory. In 2011, the International Union for the Conservation of Nature (IUCN) declared the Western black rhinoceros extinct and cited poaching as the primary reason. According to the World Wide Fund for Nature (WWF), wildlife crime is second only to habitat destruction in overall threats against species survival.

Biodiversity loss

Wildlife trade affects food chain and threatens the local ecosystem. For instance, the loss of a predator species can results in the overpopulation of the prey species, leading to disruption in the ecological balance.

Poor conditions of animals kept for trade

Animals captured for pet trade are transported in poor conditions. They are stuffed into boxes, suitcases, or sacks. Even if they survive the transport, they often suffer in their new, unnatural surroundings. Many animals are kept in markets for months, waiting to be sold, with even their basic needs unattended to.

Impact on humans

As we saw earlier, poached animals can spread diseases, such as Ebola and SARS. Poaching also puts local people and officials at risk. In Africa, nearly 600 rangers in charge of protecting wildlife were gunned down by poachers between 2009 and 2016 while in the line of duty.

Different countries employ different methods to curb poaching. Though some efforts have borne fruit, illegal wildlife trade continues unabated.

 

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What is wildlife trade?

  • Wildlife trade is a big business, run by international networks. Animals and birds are trafficked across the globe for meat, skin, bone, fur and other body parts. In addition, many species are sold as pets. Experts at TRAFFIC, the wildlife trade monitoring network, estimate that the illegal wildlife commerce runs into billions of dollars.
  • Not all wildlife trade is illegal. The sale or exchange of wild animals and plant resources are done legally for various purposes. Regulated by the United Nations’ Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), it is done in a sustainable manner. Wild plants and animals from tens of thousands of species are caught from the wild and then sold legitimately as food, pets, ornamental plants, leather, ornaments and medicine.
  • A trade becomes illegal when wildlife listed as protected under domestic or international law is hunted. Fishing and hunting without a licence and capturing wildlife from protected areas and during certain seasons also amount to wildlife crimes.

Did you know?

  • Elephants are poached for their tusk, skin and meat. Ivory is used to make billiards balls, piano keys, art objects and jewellery.
  • Rhinoceros are killed for their horn, which is predominately used in traditional Chinese medicine.
  • While freshwater turtles and pangolins are hunted for their meat, their body parts namely, carapace and scales, respectively, are used in Chinese medicine.
  • Tigers and leopards are killed for their skin.
  • Snakes, ape and monitor lizards are consumed as meat.
  • Song birds, finches, macaws, weavers, cockatoos, geckos, aquarium fish, turtles are captured alive so that they can be kept or sold as exotic pets.

 

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What is wildlife crime?

In the wake of the corona virus epidemic, China has temporarily banned the sale of wildlife in markets, restaurants and over e-commerce as part of efforts to contain the outbreak. While welcoming the move, conservationists are calling for a permanent ban as it will contribute to the recovery of wildlife populations worldwide, besides saving human lives.

The corona virus, which results in a zoonotic disease, is thought to have originated in a “seafood” market in Wuhan that sold much more than fish. Chinese authorities found everything from hedgehogs and wild boars to crocodiles for sale there, providing ideal conditions for viruses to jump to new hosts and ultimately, to people. (Zoonotic diseases spread from animals to humans.) Consumption of several vulnerable species – for example, pangolins, rhinos, elephants – is common in China. There is another theory that believes that pangolin may have passed the virus from bats to humans. Pangolin is imported in huge numbers to Chinese markets for food and medicine.

A host of other animals too are important to China for meat, medicine etc. through illegal wildlife trade. China may be the world’s largest market for wildlife products, but wildlife trade is rampant throughout the world. Wildlife trafficking puts many animals and birds at risk of extinction. A study published last year estimated that one in every four bird or mammal species on earth is caught in the wildlife trade.

 

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