Gharials

PWOnlyIAS

February 26, 2025

Gharials

Recently  Madhya Pradesh Chief Minister Mohan Yadav released 10 gharials into the Chambal River at the National Chambal Gharial Sanctuary in Morena.

  • Madhya Pradesh holds over 80% of India’s gharial population, earning it the title of a “gharial state.”

About Gharials

Gharials

  • Scientific Name: Gavialis gangeticus
  • Appearance: Gharials exhibit sexual dimorphism. 
    • They have long, slender snouts with interlocking sharp teeth.
    • Males have a bulbous snout tip resembling an inverted pot giving the name Gharial.
  • Diet: Primarily fish-eating, helping maintain aquatic ecosystem balance.
  • Sacred Significance: In Indian mythology, often depicted as the divine mount of Goddess Ganga.
  • Distribution: Historically, the Gharial range spanned to the Indus, Ganga, Brahmaputra and Mahanadi-Brahmani-Baitrani River systems of India, Bhutan, Bangladesh, Nepal and Pakistan.
  • Presently, their major population occurs in three tributaries of the Ganga River: the Chambal and the Girwa Rivers in India and the Rapti-Naryani River in Nepal.
  • Breeding Season: November to January; nesting occurs March to May on sandbanks and islands.
  • Ecosystem Role: Help maintain clean rivers by consuming carrion.

Threats to Gharial Population

  • Historical Threats: Overhunting for skins, trophies, eggs, and traditional medicine.
  • Modern Threats
    • Habitat destruction: Dams, irrigation canals, river course changes, and sand mining.
    • Pollution: Industrial and agricultural waste harming river ecosystems.
    • Fishing Activities: Gill nets cause accidental deaths, even in protected areas.

Conservation status of Gharials

  • The National Chambal Sanctuary (NCS) recorded 2,456 gharials in 2024, showing successful conservation efforts.
  • Gharial populations declined by 80% between the 1950s-60s but later saw a steady recovery until 1997.
  • Between 1997 and 2006, the population dropped by 58%, from 436 to 182 adults.
  • Gharials are extinct in Myanmar and Bhutan, with small uncertain populations in Pakistan, Nepal, and Bangladesh.

Conservation Efforts in India

  • Captive Breeding (1975-1982): 16 breeding centers established to rear and release hatchlings.
  • Reintroduction in Punjab (2017-2020): Gharials were reintroduced in the Sutlej and Beas rivers.
  • Key Sanctuaries: National Chambal (MP), Katerniaghat (UP), Son River (MP), and Satkosia Gorge (Odisha).
  • Threat Management: Illegal sand mining banned, pollution monitored, and strict fishing regulations enforced.
  • Community Involvement: Local communities engaged in habitat protection and awareness programs to reduce conflicts.

About National Chambal Sanctuary (NCS)

  • Located on the Chambal River near the tripoint of Rajasthan, Madhya Pradesh and Uttar Pradesh.
  • It was first declared in Madhya Pradesh in 1978, and now constitutes a long narrow eco-reserve co-administered by the M.P , U.P and Rajasthan.
  • Protects a 435-km stretch of the Chambal River, one of India’s cleanest rivers.
  • Home to 290+ bird species, including Indian Skimmers (80% of India’s population).
  • Acts as a breeding ground for gharials, helping revive populations in other states.

Conservation Crocodile species found in India

Species Scientific Name Habitat IUCN Status WPA, 1972 Schedule
Gharial Gavialis gangeticus Freshwater rivers (Chambal, Ganga, Brahmaputra) Critically Endangered Schedule I
Mugger Crocodile Crocodylus palustris Freshwater lakes, rivers, marshes Vulnerable Schedule I
Saltwater Crocodile Crocodylus porosus Estuaries, coastal mangroves, brackish water Least Concern Schedule I

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Quick Revise Now !
UDAAN PRELIMS WALLAH
Comprehensive coverage with a concise format
Integration of PYQ within the booklet
Designed as per recent trends of Prelims questions
हिंदी में भी उपलब्ध

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