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Mantle of giant clam with light-sensitive spots, which detect danger and cause the clam to close. Tridacna gigas, the giant clam, is the best-known species of the giant clam genus Tridacna. Giant clams are the largest living bivalve molluscs. Several other species of "giant clam" in the genus Tridacna are often misidentified as Tridacna gigas.
Tridacna is a genus of large saltwater clams, marine bivalve molluscs in the subfamily Tridacninae, the giant clams. Many Tridacna species are threatened. They have heavy shells, fluted with 4 to 6 folds. The mantle is often brightly coloured. They inhabit shallow waters of coral reefs in warm seas of the Indo-Pacific region. [2]
Tridacna squamosa, known commonly as the fluted giant clam and scaly clam, is a species of bivalve in the family Cardiidae. [1] [3]It is one of a number of large clam species native to the shallow coral reefs of the South Pacific and Indian Oceans.
The researchers found that Tridacna gigas (the best-known giant clam species) had become locally extinct in many areas. To make matters worse, “We found that over 80% of the locations where the ...
Sometimes the giant clams are still treated as a separate family Tridacnidae, [1] but modern phylogenetic analyses included them in the family Cardiidae as a subfamily. [2] [3] Two recent genera and eight species are known: Hippopus—2 species; Tridacna—10 species; Recent genetic evidence has shown them to be monophyletic sister taxa. [4]
The maxima clam (Tridacna maxima), also known as the small giant clam, is a species of bivalve mollusc found throughout the Indo-Pacific region. [3]They are much sought after in the aquarium trade, as their often striking coloration mimics that of the true giant clam; however, the maximas maintain a manageable size, with the shells of large specimens typically not exceeding 20 centimetres (7.9 ...
Tridacna derasa in a reef aquarium. The southern giant clam is classified as Vulnerable (VU) on the IUCN Red List, [1] and is listed on Appendix II of CITES. [13] The southern giant clam is a popular food item and aquarium species, and has therefore been hunted extensively throughout its natural habitat. [6]
The Giga Pearl was formed by a Tridacna gigas which is the largest extant bivalve. These giant clams can grow up to approximately four and a half feet (1.4 m) wide and can weigh up to approximately 550 pounds (250 kg). [7] They are found in the eastern Indian Ocean and west Pacific Ocean, from Thailand and western Australia eastward to ...