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Monthly DNA
15 Oct, 2025
32 Min Read
A rare and beautiful species of dragonfly, the scarlet dragonfly (Crocothemis erythraea), has recently been spotted in the valleys of Munnar, located in the Western Ghats of Kerala. This discovery has captured the interest of entomologists and nature enthusiasts, marking a significant moment for the biodiversity of the region.
Scientific Name: Crocothemis erythraea
Common Names: Broad scarlet, common scarlet-darter, and scarlet darter.
The scarlet dragonfly is generally found in southern Europe, throughout Africa, and across western Asia, extending to as far as southern China.
Although it is common in these regions, this species is known to sometimes travel far from its usual habitat, making its recent appearance in Munnar an interesting find.
Scarlet dragonflies prefer to live near sunny water bodies like rivers, streams, and ponds.
They thrive in sunlit areas, avoiding places with heavy shade. Their habitat requirements make regions with access to water, like Munnar, ideal for them.
The scarlet dragonfly has a length of 33–44 mm (1.3–1.7 inches) and is characterized by a flattened and broad abdomen.
Male Dragonfly:
The male has a bright scarlet-red abdomen that is notably widened, with small amber patches at the bases of the hindwings.
The veins along the leading edges of the wings are also red, adding to its striking appearance.
Female and Immature Dragonflies:
These are typically yellow-brown in color with a distinct pale stripe running along the top of the thorax.
The presence of rare species such as the scarlet dragonfly indicates that the region's ecosystem is healthy, but it also underscores the importance of protecting such habitats from environmental threats like pollution, deforestation, and climate change.
Biodiversity hotspots like Munnar serve as crucial indicators of ecosystem health. This discovery may encourage further conservation efforts to ensure the protection of both aquatic and terrestrial species in the region.
Source: THE HINDU
A 6.9 magnitude offshore earthquake recently struck Cebu province in central Philippines, shaking the region and prompting concerns about potential aftershocks and damage.
The Philippines is a tropical island nation located in Southeast Asia, surrounded by seas and oceans. Here are key facts about the country:
The Philippines is situated in the western Pacific Ocean and consists of 7,641 islands.
It shares maritime borders with several countries:
Vietnam to the west,
Taiwan to the north,
Palau to the east,
Malaysia and Indonesia to the south.
The country is surrounded by several significant bodies of water:
South China Sea (north and west),
Philippine Sea (east),
Celebes Sea (south),
Sulu Sea (southwest).
Highest Point: Mount Apo (2,954 meters), located on the island of Mindanao, is the tallest mountain in the country.
Rivers: The Cagayan River, the longest in the Philippines, along with others like the Mindanao and Agusan rivers, are important waterways.
Volcanoes: The Mayon Volcano, known for its perfect cone shape, is one of the most active volcanoes in the country, often posing risks to nearby communities.
Lakes: Laguna de Bay, located near Manila, is the largest lake in the Philippines and plays a crucial role in the local ecosystem.
The country experiences a tropical climate, with distinct wet and dry seasons, making it prone to both monsoons and typhoons.
The Philippines is rich in various natural resources, including:
Timber, petroleum, nickel, cobalt, silver, gold, salt, and copper.
It is the third-largest producer of geothermal energy in the world, following the United States and Indonesia.
The Puerto-Princesa Subterranean River National Park, a natural wonder and one of the longest underground rivers in the world, was inscribed as a World Heritage Site in 1999.
The capital of the Philippines is Manila, a bustling metropolis with a rich history and cultural significance.
The Philippines lies in the Ring of Fire, a region known for its high seismic and volcanic activity. Earthquakes, like the recent one off Cebu, are relatively common in this region. The Philippine Fault System and the subduction zones around the islands contribute to frequent seismic events.
The recent 6.9 magnitude earthquake in Cebu serves as a reminder of the geological vulnerability of the region. The Philippines is often hit by seismic shocks and volcanic eruptions due to its positioning along tectonic boundaries.
Government Response: Authorities are closely monitoring the situation to ensure that any potential risks from aftershocks or tsunamis are mitigated.
Source: THE HINDU
A recent peer-reviewed study has provided a comprehensive analysis of sarcoidosis, shedding light on its variable course and the factors influencing the severity of the disease. This study is significant as it helps to better understand the complexity and variability of sarcoidosis, a condition that affects the immune system and causes inflammation.
Sarcoidosis is a condition that causes the immune system to overreact, resulting in the formation of granulomas (small lumps or nodules) in various organs of the body.
Granulomas are formed as a result of inflammation caused by the immune system. They are composed of white blood cells that have grouped together to contain what the body believes is a harmful substance, such as a virus, bacteria, or toxin.
These granulomas are surrounded by dense, fibrous tissue, giving them a hard and lumpy texture. Though granulomas can develop in almost any part of the body, they are most commonly found in:
Lungs,
Lymph nodes,
Eyes,
Skin, and Heart.
The exact cause of sarcoidosis remains unknown, but it is believed to be due to a combination of genetic and environmental factors:
Genetic factors: Certain genetic changes may make some individuals more susceptible to sarcoidosis.
Environmental triggers: It may be triggered by environmental factors such as:
Bacteria, viruses, dust, or chemicals.
When these environmental triggers are introduced, the immune system overreacts, leading to inflammation and the formation of granulomas.
The severity and symptoms of sarcoidosis can vary significantly depending on where the granulomas form and their size. Common symptoms include:
Cough and shortness of breath (if granulomas are in the lungs),
Tender sores on the shins (known as erythema nodosum),
Eye pain and redness (if the eyes are affected),
In some cases, the disease may cause no symptoms at all, or symptoms may resolve on their own. However, in other cases, sarcoidosis may become chronic or lead to complications, such as fibrosis (scarring) in the lungs.
Sarcoidosis can sometimes cause permanent lung damage if the granulomas turn into fibrosis, which leads to lung scarring. In severe cases, it may cause organ damage in other areas as well.
There is no cure for sarcoidosis. However, most cases resolve on their own or with minimal treatment. Many people with sarcoidosis do not require ongoing treatment.
Treatment is generally aimed at managing symptoms and reducing the immune system’s overreaction. Medications such as steroids (e.g., prednisone) are often prescribed to reduce inflammation.
For some, sarcoidosis can last for years, potentially causing significant damage to organs, requiring ongoing treatment to manage the disease.
The recent peer-reviewed study underscores the complex and unpredictable nature of sarcoidosis. Researchers aim to identify the specific factors that contribute to disease progression and severity, helping healthcare professionals tailor treatments for individual patients based on their specific needs.
The study also emphasizes that genetic predispositions, along with environmental triggers, could help predict how sarcoidosis may progress in different individuals. This knowledge could be pivotal in early intervention and personalized treatment plans for those affected.
Source: INDIAN EXPRESS
In a recent development, a routine patrol by the Forest Department at Tipeshwar Wildlife Sanctuary (TWS) led to the discovery of a poached pangolin.
Location: TWS is located in the Yavatmal district of Maharashtra, India. It spans across 148.63 square kilometers.
Name Origin: The sanctuary is named after the nearby Goddess Tipai shrine, located in Tipeshwar village.
Geographical Features:
It lies amidst the Patanbori and Parwa Ranges of the Pandarkawad Forest Division.
The sanctuary is blessed with four rivers that flow through it: Purna, Krishna, Bhima, and Tapti, giving it the poetic moniker "Green Oasis of Eastern Maharashtra."
The region is rich in basaltic soil, a remnant of ancient volcanic activity.
The landscape of TWS is hilly and undulating, with varying vegetation types that differ according to the altitude.
The predominant forest type is the Southern Tropical Dry Deciduous Forest.
The forest canopy is mainly dominated by teak, which constitutes approximately 60% of the forest. Other notable tree species include Ain, Bija, and Dhawda.
The undergrowth is rich with various grasses, bamboo groves, and medicinal plants.
TWS is home to a wide array of wildlife, including:
Hyenas, Chital (spotted deer), Black buck, Sambar deer, Jackals, Wild boars, Peacocks, Monkeys, Blue bulls (Nilgai), Wild cats, and Bears.
The sanctuary is vital for the conservation of endangered species, with its diverse habitat providing sanctuary to both flora and fauna.
The recent poaching incident involving a pangolin—an endangered species—raises concerns about the illegal wildlife trade in the area. Pangolins are highly sought after for their scales, which are used in traditional medicine, and for their meat, which is considered a delicacy in certain regions. Unfortunately, these creatures are vulnerable to poaching and have been heavily exploited in India and other parts of Asia.
This poaching discovery underscores the urgent need for stronger protection measures and anti-poaching initiatives to safeguard the sanctuary’s wildlife, particularly its endangered species like the pangolin.
While Tipeshwar Wildlife Sanctuary plays an important role in conserving biodiversity, it faces ongoing challenges related to illegal activities, including:
Poaching: As seen with the recent pangolin poaching incident.
Human-wildlife conflict: The sanctuary shares its borders with several villages, where people rely on forest resources for their livelihoods, sometimes leading to encroachments or unsustainable use of forest resources.
Tipeshwar Wildlife Sanctuary remains a significant haven for biodiversity in Maharashtra. However, incidents like this poaching case of a pangolin point to the ongoing threats facing wildlife in India. Efforts to conserve the sanctuary’s unique ecosystems and wildlife require both government action and local community involvement to ensure a safer, more sustainable future for both people and wildlife in the region
Source: THE HINDU
The Union Environment Ministry has recently approved the translocation of eight tigers from the Tadoba-Andhari and Pench Tiger Reserves to the Sahyadri Tiger Reserve (STR) in western Maharashtra. This move is part of efforts to boost the tiger population in the region and maintain ecological balance across Maharashtra’s tiger reserves.
Sahyadri Tiger Reserve is located in the Sahyadri Ranges of the Western Ghats in Maharashtra, a UNESCO World Heritage site known for its biodiversity.
STR is the first Tiger Reserve in Western Maharashtra and the fourth Tiger Reserve in the state, spanning two important Protected Areas:
Koyana Wildlife Sanctuary (KWLS)
Chandoli National Park (CNP)
The region is unique due to its rich biodiversity, with lush forests, varied terrains, and significant populations of tiger and other endangered species.
Sahyadri Tiger Reserve spans an area characterized by undulating terrain with steep escarpments along the western boundary.
A notable feature is the presence of rocky and lateritic plateaus called “Sadas,” which are marked by barren rocky hills, dense thorny bushes, and overhanging cliffs.
The region is also home to two significant reservoirs:
Shivsagar Reservoir (Koyana River)
Vasant Sagar Reservoir (Warana River)
The reserve is rich in moist evergreen, semi-evergreen, moist, and dry deciduous vegetation.
STR is recognized for its climax vegetation, making it one of the few areas in India where near-climax vegetation remains intact with minimal human disturbance.
Medicinal and fruit-bearing trees are found abundantly in the reserve.
Commercial hardwood species also thrive here, such as:
Anjani (Memecylon umbellatum)
Jambhul (Syzygium cumini)
Pisa (Actinodaphne angustifolia)
The reserve is home to several important species:
Carnivores:
Tiger, the flagship species of the reserve.
Leopard and lesser cats.
Other carnivores include the wolf, jackal, and wild dog.
Herbivores:
Deer species like Barking Deer and Sambar are abundant.
The rich vegetation provides adequate grazing grounds for these herbivores.
The translocation of tigers from Tadoba-Andhari and Pench Tiger Reserves is part of an initiative to ensure genetic diversity and reduce the pressure on the populations in existing reserves. The move is also crucial for:
Preventing human-wildlife conflict: By redistributing tigers, the risk of territorial clashes with humans or other tigers is minimized.
Improving the tiger population: Relocating tigers to a reserve like STR, which has abundant prey and natural habitat, helps in the conservation of this iconic species.
Biodiversity preservation: With a tiger population acting as an apex predator, the health of the entire ecosystem is ensured, benefitting numerous other species.
The Sahyadri Tiger Reserve stands out as a crucial wildlife conservation area, not only for tiger preservation but also for its unique flora and fauna. The recent approval for tiger translocation from Tadoba and Pench reserves to STR demonstrates a significant step towards enhancing biodiversity conservation and maintaining ecological balance in the Western Ghats region. It is hoped that this initiative will boost tiger numbers and secure their long-term future in Maharashtra’s forest ecosystems
Source: THE HINDU
A recent whaleboat fire on the Congo River has claimed the lives of over 107 people. This tragedy highlights the ongoing risks associated with river transport in the region, which remains a critical mode of transportation for many in the Democratic Republic of the Congo (DRC) and surrounding areas.
Name: The Congo River, also known as the Zaire River, is a significant waterway in west-central Africa.
Length: At 2,900 miles (4,700 km), it is the second longest river in Africa, after the Nile.
Discharge Volume: It is the second-largest river by discharge after the Amazon River.
Depth: The Congo River holds the distinction of being the world’s deepest river, with depths reaching up to 720 feet (220 meters)—deep enough that light does not penetrate its waters.
Unique Feature: It is the only major river in the world that crosses the Equator twice.
Origin: The Congo River rises in the highlands of northeastern Zambia, where it is initially known as the Chambeshi River. Its journey begins at an elevation of 5,760 feet (1,760 meters) above sea level.
Flow: The river then takes a giant counterclockwise arc, flowing northwest, west, and southwest, before draining into the Atlantic Ocean at Banana (Banane) in the Democratic Republic of the Congo.
Submarine Canyon: The Congo River’s bed continues offshore as an 800 km-long submarine canyon, reaching depths of 1,220 meters.
The Congo River runs through several countries, including:
Republic of the Congo
Democratic Republic of the Congo (DRC)
Central African Republic
Western Zambia
Northern Angola
Parts of Cameroon and Tanzania
The river’s drainage basin spans 1,335,000 square miles (3,457,000 square km), making it the second-largest river basin in the world, only after the Amazon Basin.
The Congo River’s constant water flow throughout the year is due to its unique geography: large tributaries like the Lomami, Kasai, and Ubangi rivers drain areas with alternating rainy seasons on either side of the equator.
The Congo Basin rainforest, nourished by the Congo River, is the second-largest tropical rainforest in the world, after the Amazon. This rainforest is a vital carbon sink and a key global environmental asset.
The Congo River is easily navigable for much of its length, making it a critical artery for trade and transport across central Africa, particularly in regions where other infrastructure may be lacking.
The recent incident involving the whaleboat fire on the Congo River highlights the dangers of water transport in the region. Whaleboats, which are often used for passenger transport and trade, are vulnerable to accidents, especially in areas where safety regulations and enforcement may be lacking. The tragedy serves as a stark reminder of the need for:
Improved safety measures in river transport.
Stronger regulation to prevent similar accidents.
Better emergency response systems to handle accidents swiftly.
Source: INDIAN EXPRESS
The National Crime Records Bureau (NCRB) report for 2023 highlights a 9.2% increase in crimes against children in India, with 177,335 cases registered in total. This reflects a concerning rise in child safety issues and demands urgent attention from authorities, policymakers, and civil society.
Total Cases: 177,335 cases of crime against children were reported in 2023, a rise of 9.2% from the previous year (2022).
Crime Rate: The crime rate per one-lakh child population stood at 39.9 in 2023, compared to 36.6 in 2022, indicating a growing concern.
Kidnapping and Abduction:
The highest contributor to child crimes, with 79,884 cases (45% of total crimes), affecting 82,106 children.
This includes 58,927 cases of general abduction and 37,844 instances where children were reported kidnapped.
Notably, 14,637 cases involved abducting minor girls for forced marriages.
Protection of Children from Sexual Offences (POCSO) Act:
67,694 cases (38.2% of the total) were related to sexual offences under the POCSO Act.
Of these, 40,434 cases were of penetrative sexual assault, impacting 40,846 victims.
In 39,076 cases, the offenders were known to the victims, with family members, neighbors, or employers often being perpetrators.
Age Breakdown:
762 victims were under 6 years old.
3,229 victims were between 6 and 12 years.
15,444 victims were aged 12 to 16 years.
21,411 victims were aged 16 to 18 years.
Most of the victims in rape-related cases were girls, indicating a disturbing trend in sexual violence against minors.
Murders: 1,219 cases of child murders, with 89 linked to rape or POCSO violations.
Simple Hurt: 3,050 cases of physical assault.
Abetment to Suicide: 373 cases of abetment to child suicide.
Child Marriage: 6,038 cases under the Prohibition of Child Marriage Act.
Child Labour: 1,390 cases under the Child Labour Act.
Madhya Pradesh had the highest number of cases, with 22,393 total reported cases.
Maharashtra and Uttar Pradesh followed closely in terms of crime statistics.
Assam witnessed a sharp spike, with 10,174 cases registered.
Delhi reported 7,769 cases, reflecting a disproportionately high crime rate, while Andaman and Nicobar Islands also showed a concerning trend.
Chargesheeting Rate: The overall chargesheeting rate was 64.3%, though this varied by region, with Tamil Nadu and Andhra Pradesh showing higher rates, while Delhi and Haryana had lower chargesheeting rates.
A total of 1,12,290 cases were chargesheeted out of 2,57,756 cases investigated, leaving 80,198 cases pending by the end of the year.
The report underscores the urgent need for stricter child protection laws, more efficient law enforcement, and community awareness programs to tackle these crimes. The high number of sexual assault cases, particularly within families or by known offenders, calls for better child safeguarding measures and support systems for at-risk children. Additionally, the rise in child abduction for forced marriages and child labor suggests gaps in both education and social welfare systems.
Strengthening Cybercrime Infrastructure:
Investment in Digital Forensic Labs: Establishing and upgrading digital forensic capabilities to assist law enforcement in investigating and solving cybercrimes effectively.
Public Awareness Campaigns: Launching national campaigns to educate citizens on online security, privacy practices, and how to report cybercrimes.
Improving Reporting Mechanisms:
Anonymous Reporting Channels: Encouraging the use of anonymous platforms for victims and whistleblowers to report crimes without fear of retaliation.
Victim Support Systems: Providing accessible, sensitive, and confidential support to victims of cybercrime, especially women and children, to guide them through the legal process.
Gender-Sensitive and Child-Friendly Police Training:
Police Protocols: Ensuring that law enforcement officers are trained to handle cases of gender-based violence and crimes involving children with sensitivity and professionalism.
Victim-Centric Policing: Developing clear guidelines and protocols for gender-sensitive responses, focusing on protecting the dignity and privacy of victims.
Standardisation of Crime Classifications:
Unified Crime Classification System: Adopting a standardised approach to categorising crimes to ensure uniformity in reporting, investigations, and data analysis across states and regions.
This will help in more accurate data collection and enable better policymaking and resource allocation.
Enhancing Inter-State Coordination:
National Crime Analytics Dashboard: Developing a centralised platform for real-time crime tracking and sharing of information across states. This will facilitate faster responses to crime and improve coordination among state police forces.
Accelerating Judicial Processes:
Fast-Track Courts for Cyber and Gender-Based Cases: Establishing specialised fast-track courts to deal with cases related to cybercrimes and gender-based violence, ensuring faster delivery of justice for victims.
The National Crime Records Bureau (NCRB) plays a crucial role in maintaining national crime data, which is vital for policy decisions and law enforcement strategies.
Establishment: The NCRB was established in 1986, following the recommendations of the Tandon Committee (1977-81), the National Police Commission, and the MHA Task Force (1985).
Parent Ministry: The Ministry of Home Affairs (MHA) is the parent ministry of NCRB, ensuring that the bureau works in line with national security and policing priorities.
Functions: NCRB acts as the national repository of crime and criminal data, including:
Managing the Crime and Criminal Tracking Network & Systems (CCTNS), a national database that helps law enforcement track criminal activities across the country.
Publishing major reports such as:
Crime in India: Annual statistical report on the crime landscape in India.
Accidental Deaths & Suicides: Data on unnatural deaths and suicides.
Prison Statistics: Information related to the prison population and conditions.
The Crime in India 2023 report serves as a wake-up call to the government and law enforcement agencies to adapt to the changing nature of crime, especially the rise of cybercrimes and gender-based violence. The policy recommendations highlight the importance of a multifaceted approach, including improved infrastructure, better training, faster judicial processes, and enhanced data analytics. Implementing these reforms could make a significant difference in tackling crime more efficiently and ensuring justice for victims across India
Source: PIB
The Andhra Pradesh High Court recently made an important ruling regarding the doctrine of contributory negligence in criminal law. The court clarified that contributory negligence does not apply to criminal actions. In this case, a driver involved in an accident caused by rash and negligent driving, which led to the death of a person, was held liable under Section 304A of the IPC (causing death by negligence), even if there was some degree of negligence on the part of the victim.
This judgment has significant implications for how criminal liability is determined in road accidents and raises important questions about the applicability of contributory negligence in criminal cases.
The doctrine of contributory negligence is a legal principle that suggests that individuals have a duty to take reasonable care for their own safety and well-being. If someone’s own actions contribute to their injury or damage, they may be considered partially at fault for the harm suffered.
Reasonable Care: If a person fails to exercise reasonable care and their actions contribute to the damage, they can be partly responsible for the harm.
Defendant’s Defence: The defendant can argue contributory negligence if they can prove that the plaintiff's lack of care contributed to the injury. For example, if a person is hit by a reckless driver but was also not following traffic rules, the defendant may use contributory negligence as a defence.
Volenti Non Fit Injuria: The doctrine is based on the Latin maxim meaning “to a willing person, no harm is done.” It implies that if a person voluntarily exposed themselves to harm (due to their own negligence), the defendant might not be fully liable.
Burden of Proof: The burden of proof rests on the defendant. They must demonstrate that the plaintiff's negligence contributed to the injury. If the defendant is found to have a legal duty to ensure the plaintiff's safety, contributory negligence may not apply.
Scenario: If a pedestrian (A) is walking on the wrong side of the road and gets hit by a vehicle (B) driving recklessly, A’s action of walking on the wrong side could be considered contributory negligence.
The court rejected the applicability of contributory negligence in criminal cases where negligence leads to death. Specifically, in cases of rash or negligent driving, even if the victim shows some negligence, the driver remains criminally liable under Section 304A of IPC.
Section 304A of IPC deals with causing death by negligence, and the driver's rash or negligent behavior was seen as the primary cause of the fatal accident, irrespective of any negligence on the victim's part.
While contributory negligence can reduce the amount of compensation in civil cases (i.e., in tort law), India applies a different concept called "comparative negligence":
In comparative negligence, damages are distributed based on the relative fault of each party involved in an incident.
Courts weigh the degree of responsibility each party holds and apportion liability accordingly. This is particularly common in road accidents or personal injury cases.
If two drivers are involved in a crash and one is 80% at fault while the other is 20% at fault, the damages will be divided according to their respective contributions to the accident.
Criminal Actions: In criminal law, contributory negligence generally does not reduce criminal liability. If a person's negligent or rash act directly causes harm or death, they are criminally responsible, regardless of any negligence by the victim.
The Andhra Pradesh High Court ruling supports this view by affirming that criminal negligence—like causing death by reckless driving—is not mitigated by the victim's potential contribution to the accident.
This ruling has important implications for criminal law:
In criminal cases, contributory negligence will not act as a defence to reduce the liability of the accused.
This ensures that individuals who cause harm through gross negligence or recklessness, such as rash driving leading to fatal accidents, will be held criminally liable even if the victim contributed to the incident.
The ruling emphasizes that criminal law's primary concern is punishing reckless or negligent behavior that results in harm, regardless of the victim's actions.
This Andhra Pradesh High Court ruling reinforces that in cases of criminal negligence, the accused (for example, the driver responsible for an accident) can still be held liable under criminal law, even if the victim’s negligence contributed in some way. It helps clarify the limits of contributory negligence in criminal law and ensures justice for victims of negligent acts
Source: THE HINDU
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