Note4Students
From UPSC perspective, the following things are important :
Prelims level: Hilsa Fish`
Mains level: NA
Fishermen in West Bengal are in for a pleasant surprise amid the COVID-19 gloom as they have exuded hope of a bumper yield of Hilsa, known as “maacher rani” (queen of fish).
Try this question from CSP 2019:
Q. Consider the following pairs:
| Wildlife |
Naturally found in |
| 1. Blue-finned Mahseer |
Cauvery River |
| 2. Irrawaddy Dolphin |
Chambal River |
| 3. Rusty-spotted Cat |
Eastern Ghats |
Which of the pairs given above are correctly matched?
a) 1 and 2 only
b) 2 and 3 only
c) 1 and 3 only
d) 1, 2 and 3
Hilsa Fish
IUCN status: Least Concerned
- The Hilsa is a species of fish related to the herring, in the family Clupeidae.
- It is a very popular and sought-after food fish in the Indian Subcontinent.
- It is the national fish of Bangladesh and state symbol in the Indian states of West Bengal and Tripura.
- The fish contributes about 12% of the total fish production and about 1.15% of GDP in Bangladesh.
What’s so special about Hilsa?
- Hilsa has a history of migrating to Allahabad in the Ganga river system from Bangladesh.
- Though it’s a saltwater fish, it migrates to sweet waters of the Ganges from the Bay of Bengal.
- It travels upstream of the river during the mating seasons and returns to its natural abode after spawning.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Poonam Awalokan
Mains level: Man-Animal conflict
Asiatic lions have now significantly risen in number at an estimated population of 674 in the Gir forest region of Gujarat. Unlike in previous years, this count was estimated not from a Census, but from a population “observation” exercise called Poonam Avlokan.
Try this question from CSP 2017:
Q. The term ‘M-STrIPES’ is sometimes seen in the news in the context of
(a) Captive breeding of Wild Fauna
(b) Maintenance of Tiger Reserves
(c) Indigenous Satellite Navigation System
(d) Security of National Highways
Asiatic Lion
- Indian Lion (Panthera Leo Persica) is listed as Endangered and exists as a single population in Gujarat.
- It is one of five big cat species found in India and Gir National Park and Wildlife Sanctuary is the only habitat for Asiatic lions.
- Historically, it inhabited much of Western Asia and the Middle East up to northern India.
- On the IUCN Red List, it is listed under its former scientific name Panthera leo persica as Endangered because of its small population size and area of occupancy.
- More than two dozen lions died last year in an outbreak of canine distemper virus (CDV) and Babesiosis.
What is Poonam Avlokan?
It includes two methods:
- Block counting method — in which census enumerators remain stationed at water points in a given block and estimate abundance of lions in that block, based on the direct sighting of lions who need to drink water at least once in 24 hours during the summer.
- Other teams keep moving in their respective territories and make their estimates based on inputs provided by lion trackers and on chance sightings.
Back2Basics: Lion Census in India
- The first Lion Census was conducted by the Nawab of Junagadh in 1936; since 1965, the Forest Department has been regularly conducting the Lion Census every five years.
- The 6th, 8th and 11th Censuses were each delayed by a year, for various reasons.
- This year it was postponed after the lockdown was announced.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Pashmina Goats
Mains level: NA
The Chinese Army’s intrusion in Chumur and Demchok has left Ladakh’s nomadic herding Changpa community cut off from large parts of summer pastures.
Pashmina shawl is a landmark product of the Kashmir Valley. But make a note here. It carries only a BIS certification and not a Geographical Indicator.
Also try this PYQ from CSP 2014:
Q. With reference to ‘Changpa’ community of India, consider the following statement:
1. They live mainly in the State of Uttarakhand.
2. They rear the Pashmina goats that yield fine wool.
3. They are kept in the category of Scheduled Tribes.
Which of the statements given above is/are correct?
a) 1 only
b) 2 and 3 only
c) 3 only
d) 1, 2 and 3
Changpa Tribes
- The Changpa of Ladakh is high altitude pastoralists, raising mainly yaks and goats.
- Among the Ladakh Changpa, those who are still nomadic are known as Phalpa, and they take their herds from in the Hanley Valley to the village of Lato.
- Hanley is home to six isolated settlements, where the sedentary Changpa, the Fangpa reside.
- Despite their different lifestyles, both these groups intermarry.
- The Changpa speak Changskhat, a dialect of Tibetan, and practice Tibetan Buddhism.
What is the issue?
- The Chinese Army has taken over 16 kanals (two acres) of cultivable land in Chumur and advanced around 15 km inside Demchok, taking over traditional grazing pastures and cultivable lowlands.
- In a cascading effect, this has resulted in a sharp rise in deaths of young Pashmina goats this year in the Korzok-Chumur belt of Changthang plateau in Ladakh.
- This incursion has destabilized the annual seasonal migration of livestocks, including yaks and Pashmina goats.
Back2Basics: Pashmina
- The Changthangi or Ladakh Pashmina is a breed of Cashmere goat native to the high plateau of Ladakh.
- The much-valued wool from the Ladakh herds is essential for the prized Pashmina shawls woven in Kashmir and famous for their intricate handwork.
- They survive on the grass in Ladakh, where temperatures plunge to as low as −20 °C.
- These goats provide the wool for Kashmir’s famous pashmina shawls. Shawls made from Pashmina wool are considered very fine and are exported worldwide.
- Bureau of Indian Standards (BIS) has recently published an Indian Standard for identification, marking and labelling of Pashmina products to certify its purity.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Cordyceps militaris
Mains level: NA
A university in Assam has developed a fungal powder to help people boost their immunity to disease.
Try this question from CSP 2019:
Q.) Recently, there was a growing awareness in our country about the importance of Himalayan nettle (Girardinia diversifolia) because it is found to be a sustainable source of
(a) anti-malarial drug
(b) bio-diesel
(c) pulp for paper industry
(d) textile fibre
A similar question related to Cordyceps militaris can be asked. UPSC may ask whether it is a Fungi, Algae, a Moss or a Lichen.
Cordyceps militaris
- The powder is from a parasitic but rare “super mushroom” called Cordyceps militaris.
- The militaris underwent powdering through lyophilisation or freeze-drying at –80°C.
- The earth has more than 400 species of Cordyceps, a fungus parasitic on insects as well as other fungi.
- Often referred to as a super mushroom, Cordyceps known for its anti-ageing, anti-viral, energy and immunity-boosting effect.
- Natural Cordyceps is hard to get and if dried, costs at least ₹8 lakh per kg.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Charru mussel
Mains level: NA
An invasive mussel native to the South and Central American coasts is spreading quickly in the backwaters of Kerala.
Try this PYQ from CSP 2018:
Q. Why is a plant called Prosopis juliflora often mentioned in news?
(a) Its extract is widely used in cosmetics.
(b) It tends to reduce the biodiversity in the area in which it grows
(c) Its extract is used in the pesticides.
(d) None of the above
Charru mussel
- The rapid spread of the Charru mussel (Mytella strigata) may have been triggered by Cyclone Ockhi which struck the region in 2017.
- With a population as high as 11,384 per sq metre here, it has replaced the Asian green mussel (Perna Viridis) and the edible oyster Magallana bilineata (known locally as muringa).
- Externally, the Charru mussel resembles the green and brown mussels (kallummekka in Malayalam) but is much smaller in size. Its colour varies from black to brown, purple or dark green.
- Surveys show the presence of the Charru mussel in the Kadinamkulam, Paravur, Edava-Nadayara, Ashtamudi, Kayamkulam, Vembanad, Chettuva and Ponnani estuaries/backwaters.
- Ashtamudi Lake, a Ramsar site in Kollam district, remains the worst-hit.
Threats posed
- Though this smaller mussel is edible, the overall economic loss and impact on biodiversity are much bigger, it is pointed out.
- It is throwing out other mussel and clam species and threatening the livelihoods of fishermen engaged in shrimp fisheries.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Dugong
Mains level: NA
The dugong, commonly known as the sea cow, is fighting for its survival in Indian waters experts have said on the eve of ‘World Dugong Day’ on May 28, 2020.
Try this question from CSP 2015:
Q) With reference to ‘dugong’, a mammal found in India, which of the following statements is/are correct?
1) It is a herbivorous marine animal.
2) It is found along the entire coast of India
3) It is given legal protection under Schedule 1 of the Wildlife (Protection) Act, 1972.
Select the correct answer using the code given below.
(a) 1 and 2
(b) 2 only
(c) 1 and 3
(d) 3 only
Dugong
- Dugongs are mammals, which means they give birth to live young and then produce milk and nurse them.
- It is the flagship animal of Gulf of Mannar Marine National Park.
- Once the female is pregnant, she will carry the unborn baby, called a foetus for 12-14 months before giving birth.
- Female dugongs give birth underwater to a single calf at three to seven-year intervals.
- Dugongs graze on seagrass, especially young shoots and roots in shallow coastal waters. They can consume up to 40 kilograms of seagrass in a day.
- Dugongs are an IUCN Endangered marine species like sea turtles, seahorses, sea cucumbers and others.
- They are protected in India under Schedule I of the Wild (Life) Protection Act, 1972.
Threats to dugongs
- Human activities such as the destruction and modification of habitat, pollution, rampant illegal fishing activities, vessel strikes, unsustainable hunting or poaching and unplanned tourism are the main threats to dugongs.
- The loss of seagrass beds due to ocean floor trawling was the most important factor behind dwindling dugong populations in many parts of the world.
Why needs urgent attention?
- There were just 250 dugongs in the Gulf of Mannar in Tamil Nadu, the Andaman and Nicobar Islands and the Gulf of Kutch in Gujarat according to the 2013 survey report of the Zoological Survey of India (ZSI).
- Hundreds of dugongs inhabited waters off the Odisha, West Bengal and Andhra Pradesh coasts two centuries back. But they are extinct in these areas now, he added.
- Seagrass in Odisha’s Chilika Lake is a proper habitat for dugongs. However, there is not an extant population in Chilika.
Other facts:
- The 13th CoP of the Convention on the Conservation of Migratory Species of Wild Animals (CMS), an environmental treaty under the aegis of the UNEP, was hosted by India this year at Gandhinagar in Gujarat.
- India is a signatory to the CMS since 1983.
- India has signed non-legally binding Memorandums of Understanding with CMS on the conservation and management of Siberian Cranes (1998), Marine Turtles (2007), Dugongs (2008) and Raptors (2016).
- Proper conservation is the only way to save dugongs from extinction. Conservation in other places like Australia has seen their population crossing 85,000.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Kangra Tea
Mains level: Not Much
The chemicals in Kangra tea are found to be effective in boosting immunity as they can block coronavirus activity better than anti-HIV drugs.
It would be no surprise to expect a question based on worldwide tea production:
Q. Among the following, which one is the largest exporter of rice in the world in the last five years? (CSP 2019)
(a) China
(b) India
(c) Myanmar
(d) Vietnam
Kangra Tea
- Kangra tea is a tea from the Kangra district in Himachal Pradesh, India.
- Both black tea and green tea have been produced in the Kangra Valley since the mid-19th century.
- After a feasibility survey in 1848 showed the area of being suitable for tea plantation, a Chinese variety of Camellia sinensis was planted across the region.
- Kangra tea is known for its unique colour and flavour.
- The unique characteristics of the tea are attributed to the geographical properties of the region.
- Kangra tea was given the Geographical Indication status in 2005. Tea was first grown in the Kangra region in the mid-19th century.
Benefits of Kangra Tea
- Using computer-based models, the scientists screened 65 bioactive chemicals or polyphenols that could bind to a specific viral protein more efficiently than commercially available anti-HIV drugs approved for treating COVID-19 patients.
- These chemicals might block the activity of the viral protein that helps the virus to thrive inside human cells.
Back2Basics: Lopinavir/ Ritonavir
- Lopinavir/ritonavir (LPV/r), sold under the brand name Kaletra among others, is a fixed-dose combination medication for the treatment and prevention of HIV/AIDS.
- It combines lopinavir with a low dose of ritonavir.
- It is generally recommended for use with other antiretrovirals.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Various species mentioned
Mains level: Western Ghats and its biodiversity richness
A team of scientists of the Botanical Survey of India (BSI) have reported the discovery of three new plant species from the evergreen forest patches of the southern end of the Western Ghats in Kerala and Tamil Nadu.
One may get carried away from the heavy botanical names. But UPSC is known for asking ruthless questions.
Q. Recently, our scientists have discovered new and distinct spices of banana plant which attains a height of about 11 meters and has orange – colored form of pulp. In which part of India has been discovered? (CSP 2016)
a) Andaman Islands
b) Anaimalai Forests
c) Maikala Hills
d) Tropical rainforest of North-East
Which are the new species?
The three new species found are:
1) Eugenia sphaerocarpa of the Myrtaceae or Rose apple family
- A good population of Eugenia sphaerocarpa is growing in the Kakkayam area of the Malabar wildlife sanctuary in Kerala above 800 m.
- The specific epithet ‘sphaerocarpa’ denotes to the large, showy lemon-yellow spherical fruit.
- The fruits of Eugenia species are known for their palatability and many of them are harvested from the wild with some under cultivation.
2) Goniothalamus sericeus of the Annonaceae family of custard apple
- A small number of Goniothalamus sericeus plants has been found in the Kanyakumari wildlife sanctuary in Tamil Nadu.
- Mature flowers with characteristic greenish-yellow to beige petals are fragrant while the fruits are very showy and an attractive golden yellow in colour.
- The specific epithet ‘sericeus’ refers to the presence of dense silky hair on the petals.
3) Memecylon nervosum of the Melastomataceae (Kayamboo or Kaasavu in local parlance) family
- A small population of Memecylon nervosum was also found at the same sanctuary at an altitude between 700-900 m with more that than 10 sub-populations located along the banks of a perennial rivulet.
- The species have showy purplish-blue flowers and mauve to purplish-red fruits.
- The specific epithet ‘nervosum’ alludes to the presence of prominently raised lateral and intramarginal veins on the lower surface of the lamina.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Pinanga Andamanensis
Mains level: NA
A rare palm endemic to the South Andaman Island is finding a second home at Thiruvananthapuram-based Jawaharlal Nehru Tropical Botanic Garden and Research Institute (JNTBGRI).
Last year one species from our newscard : Species in news: Hump-backed Mahseer made it into the CSP 2019. The ‘Abutilon ranadei’ flower in the newscard creates such a vibe yet again.
A stand-alone species being mentioned in the news for the first time often find their way into the prelims. Make a special note here.
Pinanga Andamanensis
- Pinanga andamanensis is an IUCN critically endangered species and one of the least known among the endemic palms of the Andaman Islands.
- The name is derived from ‘Penang’, the modern-day Malaysian state.
- Its entire population of some 600 specimens naturally occurs only in a tiny, evergreen forest pocket in South Andaman’s Mount Harriet National Park.
- It was originally described by the Italian botanist Odoardo Beccari in 1934.
- His description was based on an old herbarium specimen collected by E.H. Man, a late-19th century assistant superintendent in the Andaman administration.
- After that first identification, it was thought to be extinct till 1992.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Gharial, Mugger , Saltwater Crocodile
Mains level: Species reintroduction and various associated issues in news
Forty gharials (Gavialis gangeticus) were released in the Ghaghara River by the Bahraich forest division of Uttar Pradesh.
This year, we have seen many news focusing on species reintroduction into the wild. Can you recall them?? If not, Click Here.
And one may often get confused between the Mugger, Gharial and the Saltwater Crocodile. Note the differences about their IUCN status, habitat (freshwater/saltwater) etc..
Gharials
- The Gharial is a fish-eating crocodile is native to the Indian subcontinent. They are a crucial indicator of clean river water.
- Small released populations are present and increasing in the rivers of the National Chambal Sanctuary, Katarniaghat Wildlife Sanctuary, Son River Sanctuary.
- It is also found at the rainforest biome of Mahanadi in Satkosia Gorge Sanctuary, Orissa.
- Gharials are ‘Critically Endangered’ in the IUCN Red List of Species.
- The species is also listed under Schedule I of the Wild Life (Protection) Act, 1972.
Into the wild
- A major chunk of gharials in India is found in the Chambal River, which has about 1,000 adults.
- The Ghaghara acts as an important aquatic corridor for gharials in Uttar Pradesh. The river is a major left-bank tributary of the Ganges.
- About 250 gharials have been released in the Ghaghara since 2014.
- However, there are satellite populations of less than 100 adults in the Girwa River (Katarniaghat Wildlife Sanctuary in Uttar Pradesh, the Ramganga River in Jim Corbett National Park and the Son River).
- Like Uttar Pradesh, Bihar too is releasing gharials in the Valmiki Tiger Reserve as part of restocking the wild population. Unlike crocodiles, gharials do not pose any danger to humans.
Back2Basics
Mugger
- The mugger is a marsh crocodile which is found throughout the Indian subcontinent.
- It is a freshwater species and found in lakes, rivers and marshes.
- IUCN Status: Vulnerable
Saltwater Crocodile
- It is the largest of all living reptiles.
- It is found along the eastern coast of India.
- IUCN Status: Least Concerned
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: HCQ, Quinine Nongladew
Mains level: NA
Quinine, the most primitive antimalarial avatar of Hydroxychloroquine (HCQ), has made a village in Meghalaya latch on to its past for a curative future.
Relate Quinine Nongladew with the following question. Such peculiar names are very important.
Q. Recently, there was a growing awareness in our country about the importance of Himalayan nettle (Girardinia diversifolia) because it is found to be a sustainable source of (CSP 2019)
(a) anti-malarial drug
(b) bio-diesel
(c) pulp for paper industry
(d) textile fibre
Quinine Nongladew
- The herb Quinine Nongladew is the alkaloid quinine extracted from the bark of cinchona, a plant belonging to the Rubiaceae family and classified as either a large shrub or a small tree
- The tree is named after a village about 70 km south of Guwahati, on the highway to Meghalaya capital Shillong.
- The cinchona nursery was raised in the 19th century, probably around 1874, when Shillong became the British administrative headquarters for Assam Province.
- Large swathes of Meghalaya used to be, and still are, malaria-prone.
- The British had the foresight to start the plantation to combat malaria and other diseases caused by mosquitoes.
Back2Basics: Hydroxychloroquine (HCQ)
- HCQ is an oral tablet used as an anti-malarial drug. It is used to treat malaria, lupus erythematosus, and rheumatoid arthritis.
- It may be used as part of a combination therapy where it is taken with other drugs.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Trimeresurus Salazar
Mains level: Not Much
The new species, Trimeresurus Salazar is a snake been discovered in Arunachal Pradesh.
Another specie spotted with one more peculiarity, the name Salazar 🙂 Such species are most likely to be asked in prelims to match the columns with their habitat state.
Trimeresurus Salazar
- Salazar’s pit viper belongs to the genus Trimeresurus Lacépède comprising “charismatic venomous serpents with morphologically as well as ecologically diverse species”.
- Pit vipers are venomous snakes distinguished by their heat-sensing pit organs between the eye and the nostril.
- The name was inspired by Salazar Slytherin, the co-founder of J.K. Rowlings’ fictional Hogwarts School of Witchcraft and Wizardry.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Himalayan Ibex
Mains level: NA
A recent study by scientists of the Zoological Survey of India (ZSI) has proved that Himalayan Ibex, distributed in the trans-Himalayan ranges of Jammu and Kashmir, Ladakh and Himachal Pradesh, is a distinct species from the Siberian Ibex.
Himalayan Ibex
IUCN/WPA Status: Least Concern / Schedule I
- Himalayan Ibex (Capra ibex sibirica) is widely found in arid and rocky mountain of Karakoram, Hindukush and Himalayas of Gilgit-Baltistan.
- The males are characterized by heavy body, large horns, long bears while females have small body small horns.
- The threats that Himalayan ibex face are the illegal hunting, human disturbance, habitat loss and competition for forage with domestic livestock.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: SAWEN, TRAFFIC, Red Panda
Mains level: Not Much
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According to a report by the TRAFFIC report, there has been a considerable reduction in the poaching of Red Panda (ailurus fulgens). The report also recommended trans-boundary law enforcement co-operation through the use of multi-government platforms like SAWEN (South Asia Wildlife Enforcement Network).
Red Panda
IUCN Red List Status: Endangered
- The red panda (Ailurus fulgens) is a mammal native to the eastern Himalayas and southwestern China.
- Its wild population is estimated at fewer than 10,000 mature individuals and continues to decline due to habitat loss and fragmentation, poaching, and inbreeding depression.
- Despite its name, it is not closely related to the giant panda
- The animal has been hunted for meat and fur, besides illegal capture for the pet trade.
- An estimated 14,500 animals are left in the wild across Nepal, Bhutan, India, China and Myanmar.
- About 5,000-6,000 red pandas are estimated to be present in four Indian states – Arunachal Pradesh, Meghalaya, Sikkim and West Bengal.
- The diminishing habitat is a major threat to the species which is a very selective feeder and survives on selected species of bamboos.
About South Asia Wildlife Enforcement Network (SAWEN)
- SAWEN is a Regional network is comprised of eight countries in South Asia: Afghanistan, Bangladesh, Bhutan, India, Maldives, Nepal, Pakistan and Sri Lanka.
- It aims at working as a strong regional intergovernmental body for combating wildlife crime by attempting common goals and approaches for combating illegal trade in the region.
- The South Asia region is very vulnerable to illegal traffic and wildlife crimes due to the presence of precious biodiversity and large markets as well as traffic routes for wildlife products in the south East Asian region.
- The collaboration in harmonizing as well as enforcing the wildlife protection in the region is considered very important for effective conservation of such precious biodiversity.
- India adopted the Statute of the SAWEN and became its formal member in 2016.
Back2Basics
TRAFFIC
- The TRAFFIC, the Wildlife Trade Monitoring Network, is a leading non-governmental organisation working on wildlife trade in the context of both biodiversity conservation and sustainable development.
- It is a joint program of World Wildlife Fund (WWF) and the IUCN.
- It aims to ensure that trade in wild plants and animals is not a threat to the conservation of nature.
- The TRAFFIC is governed by the TRAFFIC Committee, a steering group composed of members of TRAFFIC’s partner organizations, WWF and IUCN.
- TRAFFIC also works in close co-operation with the Secretariat of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES).
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Swamp Wallaby and its uniqueness
Mains level: NA
Researchers reported that the swamp wallaby, a marsupial related to the kangaroo, is pregnant throughout its adult life. It typically conceives a new embryo days before delivering the newborn from its previous pregnancy.
Swamp wallaby
IUCN Status: Least Concerned
- The swamp wallaby is a small macropod marsupial of eastern Australia. It is likely the only mammal pregnant and lactating all lifelong.
- Female wallabies and kangaroos have two uteri and two separate ovaries.
- At the end of a pregnancy in one uterus, a new embryo develops in the other uterus.
- Kangaroos and wallabies regularly have an embryo in the uterus, a young joey in the pouch, and a third semi-dependent young at foot, still drinking its mother’s milk.
How it is different from Kangaroo?
- In kangaroos, the new embryo is conceived a day or two after the previous birth.
- In the swamp wallaby (Wallabia bicolor), the new conception happens one or two days before the previous joey is delivered.
What happens after?
- As soon as the mature foetus is born and settles in the pouch, the swamp wallaby arrests the development of the new embryo.
- This is called embryonic diapause, which happens in many animals to pause reproduction until the conditions are right — season, climate, food availability.
- For wallabies, this is also to ensure that the new one is born only when the pouch is free again.
- If this did not happen, the swamp wallaby would be birthing new young every 30 days — it has a short gestation period — and its pouch could not support that.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Eurasian Otters
Mains level: NA
Researchers conducting a study in Odisha’s Chilika Lake have found the presence of a viable, breeding population of Eurasian Otters, a fishing cat in the brackish water lagoon.
Eurasian Otters
- IUCN Status: Near Threatened
- Species in India: Smooth-coated, Asian small-clawed and Eurasian Otters
- Habitat: Smooth-coated — all over India; Asian small-clawed — only in the Himalayan foothills, parts of the Eastern and southern Western Ghats; Eurasian — Western Ghats and Himalayas.
- Diet comprises several small animals, mainly crabs and small fishes.
- Lives in small packs, is mostly nocturnal, but can be diurnal in areas which are less disturbed.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Thanatotheristes
Mains level: Not Much
Scientists have found that a dinosaur fossil, found in Alberta in Canada in 2010, belongs to a new species of tyrannosaur. They have named it Thanatotheristes, which means “reaper of death”.
Thanatotheristes
- Tyrannosaurs were one of the largest meat-eating dinosaurs to have ever lived, with very large and high skulls, and the best known among them is the Tyrannosaurus rex, celebrated in the Jurassic Park series.
- The 79-million-year-old fossil that the researchers have found is the oldest tyrannosaur known from northern North America.
- Thanatotheristes preyed on large plant-eating dinosaurs such as the horned xenoceratops and the dome-headed colepiochephale.
- The research suggests that tyrannosaurs did not have one general body type; rather different tyrannosaur species evolved distinct body sizes, skull forms and other such physical features.
- The fossil specimen is important to understand the Late Cretaceous period, which is the period when tyrannosaurs roamed the Earth.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Flame-throated Bulbul
Mains level: NA
The flame-throated bulbul, also called the Rubigula, was chosen as the mascot of the 36th National Games to be held in Goa. It is the State bird of Goa.
Flame-throated Bulbul
IUCN status: Least Concern
- The Flame-throated Bulbul is endemic to southern peninsular India where it is locally distributed in southern Andhra Pradesh, eastern Karnataka, Goa, Orissa, eastern Kerala and northern Tamil Nadu.
- It prefer habitats like rocky, scrub-covered hills mostly in the Eastern Ghats and central peninsular India but also in some places in the Western Ghats.
- It is a Schedule – IV bird under the Wildlife (Protection) Act, 1972.
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Note4Students
From UPSC perspective, the following things are important :
Prelims level: Natrialba Swarupiae, Sambhar Lake
Mains level: Not Much
- Scientists at the National Centre for Microbial Resource — National Centre for Cell Science (NCMR-NCCS) in Pune have reported a new archaeon (a kind of microorganism), which they discovered in Sambhar Salt Lake in Rajasthan.
- The new archaeon has been named Natrialba swarupiae, after Dr Renu Swarup, secretary, Department of Biotechnology, for her initiative in supporting microbial diversity studies in the country.
Archaea
- Archaea (singular archaeon) are a primitive group of microorganisms that thrive in extreme habitats such as hot springs, cold deserts and hypersaline lakes.
- These slow-growing organisms are also present in the human gut, and have a potential relationship with human health.
- They are known for producing antimicrobial molecules, and for anti-oxidant activity with applications in eco-friendly waste-water treatment.
- Archaea are extremely difficult to culture due to challenges in providing natural conditions in a laboratory setting.
- As archaea are relatively poorly studied, very little is known about how archaea behave in the human body.
- The organism has potential gene clusters that helps maintain the metabolism of the archaea to survive in extreme harsh conditions.
Search and discovery
- Sambhar Lake has been poorly studied for microbial ecology studies.
- With a salt production of 0.2 million tonnes per annum, it is also a hypersaline ecosystem which provides an opportunity for microbial ecologists to understand organisms that thrive in such concentrations.
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From UPSC perspective, the following things are important :
Prelims level: Steppe Eagle
Mains level: Conservation of migratory birds in India
A lone endangered steppe eagle (Aquila nipalensis) has been sighted by a group of birdwatchers in a paddy field near Vijayawada.
Steppe Eagle
- The Steppe Eagle is a migratory raptor which has undergone extremely rapid population declines within all its range.
- It breeds in Russia, Kazakhstan, and Mongolia during the winter season.
- Steppe eagle is the second-largest migratory eagle species to India.
- IUCN Status: It has moved from ‘Least Concern’ to ‘Endangered’
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