Tridacna


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Related to Tridacna: Tridacna squamosa

Tridacna

 

a genus of large bivalve mollusks that inhabit the coastal zone of tropical seas. There are several species, the best-known of which is the giant clam (T. gigas), which inhabits the Pacific. Its shell measures as much as 1.4 m in length and weighs as much as 250 kg. The valves of the shell are identical and very thick, without a nacreous layer. They are marked by radial plication, coarse scales, and ribs on the surface. The inhabitants of the islands of Oceania use the shells as building materials. They also use them to make household utensils, ornaments, and amulets. In addition the shells serve as money for local trade.

References in periodicals archive ?
The highest threat of extinction is faced by the only truly gigantic giant clam species, Tridacna gigas, according to findings by the research team.
This study assessed whether morphologically distinct Tridacna maxima and Tridacna noae from New Ireland Province, Papua New Guinea (PNG), can successfully cross-fertilize to produce hybrid juveniles.
Spawning, development and acquisition of zooxanthellae by Tridacna squamosa (Mollusca, Bivalvia).
The largest species, Tridacna gigas, grows over a period of several decades to nearly 5 feet in length, with a shell that can weigh more than 400 pounds.
Some favored species, such as giant clams, Tridacna spp.
3-centimeter long Tridacna gigas and the shortest is a 3-cm juvenile.
ABSTRACT This paper reports on embryonic and larval development of the giant clam Tridacna noae.
Cobaltocalcite * FTIR spectroscopy of melee diamonds * Irradiated color-change diamonds * Diamond in diamond * Tridacna shell in imitation pearls * Large quahog pearl * HPHT synthetic diamond melee in high-end jewelry * Large HPHT synthetic diamonds * Synthetic moissanite melee in colored diamond bracelet.
It is unclear whether the alleged broken Tridacna shell adze from Potusa (Janetski 1980: 123-124) is actually an adze; the only other reported shell adze is a small example, probably Cassis shell, from To'aga (Kirch 1993: 158).
The Tridacna Reef location consists of a submerged atoll lying approximately 38.