Green Mussel (Tahong)
Definition
The green mussel (Perna viridis), called tahong in the Philippines, is an edible bivalve with a smooth green shell that grows in dense clusters on stakes, ropes, and hard surfaces in estuarine waters. Native to the Asia-Pacific region, it supports an important small-scale aquaculture and gathering fishery in Philippine bays, most famously around Bacoor in Manila Bay.
Identities (Wikipedia/Wikidata/DBpedia)
- Wikipedia: https://en.wikipedia.org/wiki/Perna_viridis
- Wikidata: https://www.wikidata.org/wiki/Q3271979
- DBpedia: N/A
Also Known As
Tahong; Asian green mussel; green-lipped mussel of Asian waters.
Examples and Analogy
A tahong farm of bamboo stakes works like a submerged orchard: seed mussels settle on the stakes and are thinned and harvested as they fatten. A mussel bed filters the surrounding water continuously, each animal acting like a tiny pump straining plankton from the bay.
Usage Scenarios
Tahong is farmed on bamboo stakes and rafts, harvested for soups, adobo, and baked dishes, sold fresh in markets as affordable protein, and used in monitoring because its tissues accumulate pollutants and biotoxins from the water.
Strategies
Growers time seed collection to spawning seasons, site farms in areas with good water exchange, rotate harvest areas, and coordinate with shellfish-bulletin advisories before marketing.
Security and Safety Measures
Harvesting follows red-tide and sanitation advisories, since mussels can concentrate paralytic shellfish toxins and bacteria; thorough cooking is standard, and beds near ports or outfalls are avoided because of contaminant buildup.
Historical Context
Stake-and-raft mussel culture took root in Manila Bay communities in the twentieth century and spread to other bays, making tahong a staple seafood and Bacoor a name synonymous with the shellfish.
Challenges and Controversies
Recurring harmful algal blooms close fisheries and stall livelihoods, coastal pollution burdens growing areas, and the same hardy fouling habit that makes the species valuable in Asia causes problems where it invades abroad.
Related Topic
Philippine Mangroves