In response to the alarming decline in the yellow-neck clam (Paphia malabarica) population, the Vizhinjam Regional Centre of ICAR-Central Marine Fisheries Research Institute (CMFRI) has achieved a significant milestone by producing three million seeds of this critically important species. This proactive initiative is aimed at augmenting and conserving the declining fishery, which holds immense ecological and economic importance, particularly in the backwaters of Kerala.
Sea Ranching Initiative in Ashtamudi Lake
To address the crisis, CMFRI will launch a large-scale sea ranching program, releasing the yellow-neck clam seeds into Ashtamudi Lake, a Ramsar site renowned for its biodiversity. The lake, which spans over 61.4 square kilometers, is one of Kerala’s most productive estuaries and is a critical habitat for the yellow-neck clam. The sea ranching initiative is expected to rejuvenate the depleted population of the species and sustain the livelihoods of the traditional fisherfolk who depend on this fishery.
Why the Yellow-Neck Clam Matters
The yellow-neck clam fishery in Ashtamudi Lake is the first clam fishery in India to receive the prestigious Marine Stewardship Council (MSC) certification, marking it as a sustainable and well-managed fishery. However, recent overexploitation, habitat degradation, and changing environmental conditions have led to a noticeable decline in its population. The drop poses a dual threat: loss of income for thousands of fishermen and disruption of the lake’s ecological balance.
Seed Production Breakthrough
The Vizhinjam Regional Centre’s marine bivalve hatchery has been pivotal in producing these seeds. Through advanced aquaculture techniques, the team successfully bred the yellow-neck clam, ensuring that the seed stock is genetically robust and suitable for replenishing the natural population in the wild.
Expected Benefits of Sea Ranching
- Biodiversity Conservation: The release of three million seeds will contribute to restoring the yellow-neck clam population, ensuring its ecological role as a filter feeder that enhances water quality.
- Sustainable Fisheries: A healthy population will stabilize the clam fishery, meeting the growing demand in domestic and international markets.
- Livelihood Security: The initiative will secure the livelihoods of the fisherfolk who rely on this resource, ensuring economic stability in the region.
- Environmental Balance: The reintroduced clams will play a crucial role in maintaining the estuary’s ecological health by reducing organic pollutants and improving water clarity.
CMFRI’s Commitment to Conservation
Dr. V. Kripa, Head of the Vizhinjam Regional Centre, emphasized the institute’s commitment to fostering sustainable fisheries and marine conservation. “Sea ranching is not just about increasing fishery production; it’s about ensuring a balance between utilization and conservation. Ashtamudi Lake is a lifeline for many, and protecting its resources is our responsibility,” she stated.
Looking Ahead
The sea ranching program is expected to serve as a model for other regions facing similar challenges. CMFRI plans to monitor the survival and growth rates of the clams post-release and refine the technique for future large-scale implementation.
The initiative underscores CMFRI’s dedication to combating the challenges of declining fisheries through science-driven solutions, ensuring that Ashtamudi Lake continues to thrive as a hub of biodiversity and economic prosperity.
