In a major scientific breakthrough, the ICAR–Central Marine Fisheries Research Institute (CMFRI) has successfully achieved induced breeding of the mangrove clam (Geloina erosa) under captive conditions. The achievement marks a significant step towards restoring declining estuarine resources and promoting sustainable aquaculture linked with mangrove conservation.

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• ICAR–Central Marine Fisheries Research Institute (CMFRI) has achieved induced breeding of mangrove clam (Geloina erosa) in captivity.
• The breakthrough supports the development of community-managed estuarine aquaculture models integrated with mangrove conservation.
• Mangrove clam, also known as mud clam, is an ecologically important bivalve species found in South and Southeast Asia.
• In northern Kerala, the species is locally known as “Kandal Kakka” and is considered a valued delicacy.
• The clam inhabits organic-rich muddy substrates in intertidal mangrove zones.
• Scientists from CMFRI’s Mariculture Division successfully induced spawning and completed the full embryonic and larval development cycle.
• Successful spat settlement was recorded from the 18th day after spawning.
• The achievement is among the few documented global instances of induced breeding and hatchery-based spat production of mangrove clam.
• Researchers are working to standardise larval rearing and nursery management protocols for large-scale seed production.
• Hatchery-produced seeds can support low-input and environmentally sustainable aquaculture.
• Seeds may be used for ranching in degraded mangrove ecosystems, aiding stock enhancement and ecosystem restoration.
• The initiative is expected to improve livelihoods and nutritional security for mangrove-dependent communities, particularly along the Kerala coast.
• Wild stocks have declined due to overharvesting, habitat degradation, pollution and coastal development.
• Lack of scientific stock assessments and harvesting regulations has further contributed to depletion.
• Mangrove clam can grow up to 10 cm in shell width and plays a vital ecological role in nutrient recycling and sediment stabilisation.