Purse Seine Fishing

Purse Seine Fishing

Purse Seine Fishing Latest News

The Supreme Court recently observed the Union and State Governments must abide by the principle of cooperative federalism to ensure effective implementation of the regulatory framework governing purse seine fishing in India's EEZ and territorial waters.

About Purse Seine Fishing

  • Purse seines are used in the open ocean to target dense schools of single-species pelagic (midwater) fish species of various sizes. 
    • Pelagic fish are those that swim in the water column of the open ocean, up to approximately 600 feet deep. 
  • A purse seine is a huge wall of netting that is set in a circle around a school of fish. 
  • Once the fish school is encircled, the net is closed underneath the school by hauling the purse line at the bottom of the net, which is called “pursing”. 
  • As the volume of the net becomes smaller, the fish become more concentrated, and the catch is harvested by either hauling the net aboard or bringing it alongside the vessel. 
  • A purse seine net can be more than 2000 metres in length and reach around 200 metres in depth. 
  • The size can vary depending on the vessel they are deployed from, the size of the mesh, and the target species.
  • Advantages:
    • Purse-seine fishing in open water is generally considered to be an efficient form of fishing.
    • It has no contact with the seabed and can have low levels of bycatch (accidental catch of unwanted species). 
    • It can also be used to catch fish congregating around fish aggregating devices.
  • Why is it banned in some states?
    • In some States, it is linked to concerns about the decreasing stock of small, pelagic shoaling fish such as sardines, mackerel, anchovies, and trevally on the western coasts.
    • Because this fishing method uses a wide net to draw in not only the targeted fish but also at-risk varieties, including turtles.
    • Fishing is a State subject, and the management plan for marine fisheries in territorial waters is the job of the states (Under the Seventh Schedule of the Indian Constitution).
    • Currently, bans on purse seine fishing are implemented in the territorial waters of Tamil Nadu, Kerala, Puducherry, Odisha, Dadra and Nagar Haveli and Daman and Diu, and the Andaman and Nicobar Islands up to 12 nautical miles.

News: LL

Purse Seine Fishing FAQs

Q1: What is purse seine fishing?

Ans: It is a fishing method in which a large wall of netting is set in a circle around a school of fish and then closed underneath by hauling a purse line.

Q2: What type of fish are primarily targeted by purse seine fishing?

Ans: Dense schools of pelagic fish.

Q3: What is meant by “pursing” in purse seine fishing?

Ans: Closing the bottom of the net beneath the fish school by hauling the purse line.

Q4: Why is purse-seine fishing considered an efficient fishing method in open water?

Ans: Because it can encircle and harvest large, dense schools of fish efficiently.

Q5: Does purse seine fishing normally involve contact with the seabed?

Ans: No, open-water purse seine fishing has no contact with the seabe

Polychaete worms

Polychaete worms

Polychaete worms Latest News

In recent years, the booming shrimp aquaculture industry has driven large-scale harvesting of wild polychaete worms. 

About Polychaete worms

  • Polychaete worms are a diverse group of marine annelids. 
  • They are also known as bristle worms.
  • These are among the most diverse groups of marine invertebrates on Earth.
  • Polychaeta means “having much hair”, and refers to the bristles on the fleshy, leg-like protrusions on their body.
  • Habitat: They occur in almost all marine habitats, from estuaries, mangroves, sandy shores, coral reefs, and seagrass beds to the continental shelf and deeper waters.

Characteristics of Polychaete worms

  • They have parapodia (small leg-like structures) for crawling, swimming and burrowing.
  • Each segment has a pair of parapodia with chaetae (bristles).
  • Their bodies consist of a circular layer of muscle around a coelom (fluid-filled space).
  • Many have tentacles for feeding or feather-like branchial radioles for feeding and breathing.
  • Reproduction: Some reproduce sexually, others asexually. Some species are hermaphrodites, which means they have both male and female reproductive organs.
  • They have high ecological adaptability and sensitivity to environmental stresses also make polychaetes great bioindicators of ecological health.
  • Ecological role: They are detritivores (that consume detritus to obtain nutrients) and play a major role in the breakdown of organic matter, oxygen transport, and its redistribution.

Source: IM

Polychaete worms FAQs

Q1: What are Polychaete worms?

Ans: They are are a diverse group of marine annelids. 

Q2: What are the ecological role of Polychaete worms?

Ans: They play a major role in the breakdown of organic matter, oxygen transport, and its redistribution.

Khagantak-243

Khagantak-243

Khagantak-243 Latest News

Recently, the Indian Air Force conducted a successful drop trial of the indigenously designed and developed Long Range Glide Bomb (LRGB), Khagantak-243. 

About Khagantak-243

  • It is a 300-kg-class airborne long-range stand-off precision-guided glide bomb.
  • Developed By: It is jointly developed by Bharat Electronics Limited (BEL) and JSR Dynamics.
  • Features of Khagantak-243
    • It is designed to be launched from a fighter aircraft and glide towards its target after release.
    • Unlike conventional free-fall bombs, glide bombs allow aircraft to engage targets from a stand-off distance without having to fly directly over them.
    • Range: It can cover a range of 144 km to 180 km when released from an altitude of 12 km at Mach 0.8. 
    • The bomb features a cylindrical body, swivel-type mid-body glide wings and five aft control surfaces that help it navigate towards its target.
  • Significance: Long-range glide bombs are designed to enable combat aircraft to engage targets from stand-off distances, allowing platforms to strike enemy targets while remaining outside the reach of certain air defence systems.

Source: TH

Khagantak-243 FAQs

Q1: It is a 300-kg-class airborne long-range stand-off precision-guided glide bomb.

Ans: Who has developed Khagantak-243?

Uparkot Fort

Uparkot Fort

Uparkot Fort Latest News

During the festival season, Junagadh’s Uparkot Fort has remained closed to visitors for the third consecutive day after a leopard was spotted inside the historic premises.

About Uparkot Fort

  • It is an ancient fort located in the city of Junagadh in Gujarat. 
  • It is strategically perched at the foothills of Girnar Hill.

Uparkot Fort History

  • This ancient fort is believed to have been built in 319 BC by the Mauryan emperor Chandragupta, though it has been extended many times.  
  • It has been inhabited continuously for over 2,000 years. 
  • The fort was known previously as the Revath Nagri. 
  • It’s been besieged 16 times, and legend has it that the fort once withstood a 12-year siege. 

Uparkot Fort Architecture

  • The fort covers an area of around 70 acres and is surrounded by a wall that is over 20 meters high in some places. 
  • The Indo-Gothic-designed fort has three entries that give way to an ancient Torana. This is a pedestal of sorts, used for auspicious Jain, Hindu, and Buddhist ceremonies. 
  • One of the most famous attractions of Uparkot Fort is the Buddhist caves, which were carved out of the rock by Buddhist monks around the 2nd century BCE. 
  • These caves are adorned with beautiful carvings and inscriptions and are considered to be some of the oldest surviving Buddhist caves in India. 
  • There is also an ancient mosque, a 15th-century Jama Masjid, which also houses the tomb of Nuri Shah in proximity.
  • The fort also encloses a couple of temples and even two stepwells called Adi Chadi, or the Adi Kavi Wav, and the Navghan Kuvo. 
  • A huge cannon of more than fifteen feet is located on the grounds. This is said to have been made in Egypt in 1531.  
  • Uparkot Fort also has a square lake in its premises, called the Nawabi Lake.
  • Besides, this vast fort also houses a moat that is at least 300 feet deep. 

News: BE

Uparkot Fort FAQs

Q1: Where is Uparkot Fort located?

Ans: In Junagadh city, Gujarat.

Q2: At the foothills of which hill is Uparkot Fort located?

Ans: Girnar Hill.

Q3: Who is traditionally credited with building Uparkot Fort?

Ans: This ancient fort is believed to have been built in 319 BC by the Mauryan emperor Chandragupta.

Q4: What are the famous Buddhist caves of Uparkot Fort?

Ans: They are rock-cut caves carved by Buddhist monks, dating to around the 2nd century BCE.

Pacific Islands Forum

Pacific Islands Forum

Pacific Islands Forum Latest News

Recently, the Indian Air Force conducted a successful drop trial of the indigenously designed and developed Long Range Glide Bomb (LRGB), Khagantak-243. 

About Pacific Islands Forum

  • It was established in 1971.
  • It is the region's top political and economic organisation, with 18 members across the Pacific Ocean.
  • Vision: To create a resilient Pacific region of peace, harmony, security, social inclusion and prosperity, that ensures all Pacific peoples can lead free, healthy and productive lives.
  • Members: Australia, Cook Islands, Federated States of Micronesia, Fiji, French Polynesia, Kiribati, Naoero, New Caledonia, New Zealand, Niue, Palau, Papua New Guinea, Republic of Marshall Islands, Samoa, Solomon Islands, Tonga, Tuvalu, and Vanuatu.
  • Headquarters: Suva, Fiji
  • Annual Meetings: The annual Forum meetings are chaired by the Head of Government of the Host Country, who remains as the Forum Chair until the next meeting. 
  • Key areas of focus of PIF: It includes regional security, economic development, climate change, ocean governance, and strengthening regionalism under the 2050 Strategy for the Blue Pacific Continent.

Source: DD News

Pacific Islands Forum FAQs

Q1: What is Pacific Islands Forum?

Ans: It is the region's top political and economic organisation, with 18 members across the Pacific Ocean.

Q2: Where is the headquarters of the Pacific Islands Forum?

Ans: Suva, Fiji

Ponnaniyar Dam

Ponnaniyar Dam

Ponnaniyar Dam Latest News

A long-pending demand of farmers to divert surplus Cauvery water from Mayanur barrage to the Ponnaniyar dam in Manapparai is likely to fructify soon.

About Ponnaniyar Dam

  • It is located in the Kadavur hill region of Karur district, Tamil Nadu, near Pooncholai village.  
  • Built between the Perumalmalai and Semmalai mountains in 1976, the Ponnaniyar dam has its downstream in the Trichy district.
  • The dam is built across the Ponnaniyar River, which is a tributary of the Kaveri River.
  • The dam is a concrete gravity dam with a height of 59 meters and a length of 310 meters. 
  • The catchment area is spread over 33.60 sq miles. The dam has a storage capacity of 120 million cubic feet (mcft). 
  • Its principal purpose is irrigation. The reservoir is important for agricultural lands in the surrounding region. 
  • The dam's water also supplies the nearby towns and villages, ensuring a regular supply of drinking water for the people. 
  • Dense forests, home to various wildlife, such as elephants, gaurs, sloth bears, sambar deer, and several species of birds and reptiles, surround the dam. 

News: NIE

Ponnaniyar Dam FAQs

Q1: Where is the Ponnaniyar Dam located?

Ans: In the Kadavur hill region of Karur district, Tamil Nadu, near Pooncholai village.

Q2: Between which two mountains is the Ponnaniyar Dam located?

Ans: Between the Perumalmalai and Semmalai mountains.

Q3: Across which river is the Ponnaniyar Dam built?

Ans: The Ponnaniyar River.

Q4: The Ponnaniyar River is a tributary of which major river?

Ans: The Kaveri River.

Districts as Export Hubs Initiative

Districts as Export Hubs (DEH) Initiative

Districts as Export Hubs Initiative Latest News

The Districts as Export Hubs initiative marks a shift in India's export strategy from concentrating growth in a few industrial centres to unlocking the potential of every district.

About Districts as Export Hubs Initiative

  • It is aimed at identifying products and services with global potential and connecting local producers with international markets.
  • It is an initiative of the Directorate General of Foreign Trade, Department of Commerce.
  • Under this initiative, the export promotion activities are being decentralised to make the districts active stakeholders in boosting export growth of the identified products and services from the districts.

Institutional Architecture for Districts as Export Hubs Initiative

  • DEH runs on a layered system of coordination between the Centre, States and districts.
  • The Department of Commerce provides overall policy direction, while the DGFT anchors implementation, facilitates stakeholder coordination and monitors progress.
    • At the State level, State Export Promotion Committees (SEPCs) guide implementation and ensure convergence across departments.
    • At the district level, District Export Promotion Committees (DEPCs), identify export opportunities, resolve local challenges and coordinate with industry, exporters and other stakeholders.
    • A key responsibility of the DEPCs is preparing District Export Action Plans (DEAPs). These plans map products and services with export potential, assess infrastructure and logistics, identify export bottlenecks.
  • Coverage: The initiative has identified export potential in 734 districts across the country, spanning critical sectors like agriculture, toys, and GI products.
  • Focused phase: From 1 June 2026, the initiative adopted a phased, outcome-oriented approach covering districts across 27 States and Union Territories, supported by 24 DGFT regional authorities and 11 partner agencies.

 Source: PIB

Districts as Export Hubs Initiative FAQ's

Q1: What is the aim of Districts as Export Hubs Initiative?

Ans: It is aimed at identifying products and services with global potential and connecting local producers with international markets.

Q2: Which department initiated the Districts as Export Hubs Initiative?

Ans: It is an initiative of the Directorate General of Foreign Trade, Department of Commerce.

Fulvous Whistling Duck

Fulvous Whistling Duck

Fulvous Whistling Duck Latest News

A flock of more than 30 Fulvous whistling ducks, a species rarely recorded in Kerala, has been recently spotted at the Venjali wetlands in Malappuram district.

About Fulvous Whistling Duck

  • The Fulvous whistling duck, also known as the fulvous tree duck, is a large, goose-like bird characterized by its long legs and neck. 
  • Scientific Name: Dendrocygna bicolor 

Fulvous Whistling Duck Habitat and Distribution

  • It is one of the most widely distributed species of waterfowl in the world, occurring mostly in tropical and subtropical regions but also in temperate areas of the Americas, Africa, and Asia. 
  • In India, the bird is more commonly found in the wetlands of Assam and other northeastern States. 
  • It prefers shallow wetlands with plenty of tall grass and other vegetation. 
  • It can be found in freshwater lakes, seasonal freshwater pools, slow-flowing streams, marshy areas, swamps in open flat terrain, flooded grasslands, and very frequently in areas of wet rice cultivation.  

Fulvous Whistling Duck Features

  • These ducks measure 45 to 55 cm in length and weigh 500 to 1,000 grams. 
  • The male ducks are slightly larger than the females. 
  • They have reddish brown plumage. 
  • The upper tail-coverts are whitish. They have whitish stripes on the flanks.
  •  A distinctive crescent white band across the black tail can be seen during flight. 
  • The legs are long with a bluish-grey tinge. 
  • The bill is grey in color.  
  • These ducks are notable for their distinctive squealing sounds when taking off and their loud, shrill whistles during flight. 

Fulvous Whistling Duck Conservation Status

It is classified as 'Least Concern' under the IUCN Red List. 

News: TH

Fulvous Whistling Duck FAQs

Q1: What is the scientific name of the Fulvous Whistling Duck?

Ans: Dendrocygna bicolor

Q2: In which regions of the world is the Fulvous Whistling Duck mainly found?

Ans: Tropical and subtropical regions, as well as some temperate areas of the Americas, Africa, and Asia.

Q3: What type of habitat does the Fulvous Whistling Duck prefer?

Ans: Shallow wetlands with abundant tall grass and other vegetation.

Q4: What is the predominant plumage colour of the Fulvous Whistling Duck?

Ans: Reddish brown.

Q5: What is the IUCN Red List status of the Fulvous Whistling Duck?

Ans: Least Concern.

Cold Allodynia

Cold Allodynia

Cold Allodynia Latest News

A team of researchers have identified the “brain circuit” that involves the sensations associated with a certain side effect of chemotherapy known as “cold allodynia”. 

About Cold Allodynia

  • It is a nerve-related pain condition where even mild cold triggers intense burning or freezing sensations.
  • It is a condition in which the sufferer may feel pain or distress from even a regular level of cold temperatures.
  • Symptoms: It includes sharp, burning pain, tingling, and pins-and-needles sensations.

Causes of Cold Allodynia 

  • Diabetes: It can injure peripheral nerves, leading to diabetic neuropathy, which may include cold allodynia.
  • Chemotherapy: Certain cancer treatments affect nerve function and can cause painful cold sensitivity. Especially when oxaliplatin, a commonly used chemotherapy drug that contains platinum.
  • Infections: Viral infections (e.g., shingles) can inflame nerves, sometimes causing persistent neuropathic pain.
  • Autoimmune Diseases: Conditions like lupus or rheumatoid arthritis can target the nervous system.
  • Nutritional Deficiencies: Lack of B vitamins, particularly B12, can impair nerve health.

Treatments for Cold Allodynia 

  • Medicines: Pregabalin, gabapentin, or duloxetine target nerve pain pathways.
  • Topical treatments: Lidocaine or capsaicin creams can desensitize skin receptors and Nonsteroidal anti-inflammatory drugs (NSAIDs) are also used.
  • Lifestyle Changes: Keep feet warm, wear insulated socks and shoes. Use heated flooring pads or warm water soaks (avoid extremes of temperature).
  • Alternative Therapies: Transcutaneous electrical nerve stimulation (TENS) delivers mild electrical currents to block pain pathways.

Source: IE

Cold Allodynia FAQs

Q1: What is Cold Allodynia?

Ans: It is a nerve-related pain condition where even mild cold triggers intense burning or freezing sensations.

Q2: What are the symptoms of Cold Allodynia?

Ans: It includes sharp, burning pain, tingling, and pins-and-needles sensations.

Sepsis

Sepsis

Sepsis Latest News

A global study recently finds that antimicrobial resistance in children is rising, undermining life-saving antibiotics for infections like sepsis and pneumonia.

About Sepsis

  • Sepsis is a life-threatening condition that happens when the body’s immune system has an extreme response to an infection, causing organ dysfunction.
  • The body’s reaction causes damage to its own tissues and organs, and it can lead to shock, multiple organ failure, and sometimes death.

Sepsis Cause

  • Sepsis happens when an infection you already have triggers a chain reaction throughout your body.
  • Sepsis is usually caused by bacterial infections but may be the result of other infections such as viruses, parasites, or fungi.
  • The infections are often in the lungs, stomach, kidneys, or bladder. 
  • It's possible for sepsis to begin with a small cut that gets infected or with an infection that develops after surgery. 
  • Sometimes, sepsis can occur in people who didn't even know that they had an infection. 
  • It can affect anyone, but people who are older, very young, pregnant, or have other health problems are at higher risk.

Sepsis Symptoms

  • Sepsis can cause one or more of these symptoms:
    • Rapid breathing and heart rate
    • Shortness of breath
    • Confusion or disorientation
    • Extreme pain or discomfort
    • Fever, shivering, or feeling very cold
    • Clammy or sweaty skin
  • Severe cases of sepsis can lead to septic shock, where your blood pressure drops to a dangerous level and multiple organs can fail.

Sepsis Treatment

  • It is very important to get treatment right away. Treatment usually includes:
    • Antibiotics.
    • Maintaining blood flow to organs. This may involve getting oxygen and intravenous (IV) fluids.
    • Treating the source of the infection.
    • If needed, medicines to increase blood pressure.
  • In serious cases, you might need kidney dialysis or a breathing tube. 
  • Some people need surgery to remove tissue damaged by the infection.

News: DTE

Sepsis FAQs

Q1: What is sepsis?

Ans: Sepsis is a life-threatening condition caused by the body's extreme immune response to an infection, resulting in organ dysfunction.

Q2: What causes sepsis?

Ans: Sepsis occurs when an existing infection triggers a chain reaction throughout the body, causing tissue and organ damage.

Q3: How does sepsis damage the body?

Ans: The body's extreme immune response can cause damage to its own tissues and organs, resulting in organ dysfunction.

Q4: What is septic shock?

Ans: Septic shock is a severe form of sepsis in which blood pressure falls to a dangerously low level and multiple organs may fail.

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