Tegillarca granosa

Species of bivalve mollusc

Tegillarca granosa, commonly known as the blood cockle, is a species of bivalve mollusc in the family Arcidae. It is found in the intertidal zones of the Indo-Pacific region and is notable for its reddish blood, which contains hemoglobin.

Description

Tegillarca granosa shells

Tegillarca granosa has a thick, rounded shell with prominent radial ribs. The shell is typically white or light brown, often with darker concentric bands. The interior of the shell is smooth and white. The species is named for its distinctive red blood, which is due to the presence of hemoglobin, a rarity among bivalves.

Distribution and Habitat

Anhai Bay, a habitat for Tegillarca granosa

Tegillarca granosa is distributed throughout the Indo-Pacific region, from the eastern coast of Africa to the western Pacific Ocean. It inhabits intertidal mudflats and estuaries, where it burrows into the sediment. The species is tolerant of a wide range of salinities and is often found in brackish waters.

Ecology

Tegillarca granosa plays a significant role in the ecosystem as a filter feeder, helping to maintain water quality by filtering out plankton and organic particles. It is preyed upon by various predators, including birds, fish, and humans.

Economic Importance

Global production of blood cockles

The blood cockle is an important species for aquaculture and is harvested extensively in many countries, particularly in Southeast Asia. It is a popular food item and is consumed in various forms, such as raw, boiled, or as an ingredient in dishes.

Culinary Uses

Kkomak, a dish made with Tegillarca granosa

In Korean cuisine, Tegillarca granosa is known as kkomak and is used in various dishes. It is often served as kkomak-muchim, a spicy marinated dish. The cockles are also enjoyed in other Asian cuisines, where they are appreciated for their unique flavor and texture.

Conservation

While Tegillarca granosa is not currently listed as endangered, overharvesting and habitat destruction pose threats to its populations. Sustainable management practices are essential to ensure the long-term viability of this species.

Related pages

• Bivalvia
• Arcidae
• Aquaculture