Fragum fragum is a species of cockle, a marine bivalve mollusc in the family Cardiidae. It is commonly known as the white strawberry cockle and is found in the western Indo-Pacific Ocean. It is the type species of the genus Fragum.
Fragum fragum grows to a length of 25 to 45 mm (1.0 to 1.8 in).[1] It has a pair of white, thick, sculptured valves with a nacreous coating on the interior.
Fragum fragum is native to the tropical western Indo-Pacific Ocean. Its range extends from the East African coast and Madagascar to Polynesia, Japan and northern Australia. It is found at depths down to 20 metres (66 ft) and lives buried in the sandy seabed.[2]
Fragum fragum lives buried in sand, extending its siphons to the surface to draw in water in order to filter feed and breathe. It has a symbiotic relationship with certain micro-algae, zooxanthellae, which live in the mantle and other soft tissues. Its symbionts need a lower light intensity for photosynthesis to take place than do those of the closely related species Fragum unedo. This means that Fragum fragum which also has a wider gape, can remain buried shallowly in the seabed whereas Fragum unedo needs to expose itself to light on the surface of the seabed, running a much greater risk of predation.[3]
Fragum fragum is a species of cockle, a marine bivalve mollusc in the family Cardiidae. It is commonly known as the white strawberry cockle and is found in the western Indo-Pacific Ocean. It is the type species of the genus Fragum.
Fragum fragum is een tweekleppigensoort uit de familie van de Cardiidae.[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1758 door Linnaeus.
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脊鸟蛤（学名：Fragum fragum），又名白莓鳥尾蛤[2]，是鸟尾蛤科心形鳥尾蛤亞科[2]脊鸟蛤属的一個海洋腹足綱軟體動物物種。舊屬帘蛤目[3]，今屬鳥蛤目[1]。本物種是脊鳥蛤屬的模式種，分佈於印度洋-西太平洋海域。
貝殼略呈三角形[3]，色白、殼厚。由殼頂到最長位置劃一線，兩邊不同大小，看起來類似心形；殼表具許多縱肋，肋上有鱗片排列其上[3]，內層有珠母層。殼長25至45 mm（1.0至1.8英寸）[1]。
本物種是印度洋-西太平洋海域的原生物種，西起東非海岸、馬達加斯加、日本、中国大陆[3][4]的西沙群島海域[5]、台湾[3][6]的高雄縣、澎湖[7][8]、東沙島、小金門、金門[5]的金寧與金沙[9]、印度尼西亚[3][10]、澳大利亞北部及波里尼西亞群島。常栖息在浅海[3]水深約20米（66英尺），埋於沙質海床[11]。
埋於沙底的脊鳥蛤透過伸出其虹吸管到水面抽取海水濾食及呼吸。脊鳥蛤還會與多種微藻保持共生關係，例如：蟲黃藻（zooxanthellae），寄生於其外套膜及其他軟組織裡。Its symbionts need a lower light intensity for photosynthesis to take place than do those of the closely related species Fragum unedo. This means that Fragum fragum which also has a wider gape, can remain buried shallowly in the seabed whereas Fragum unedo needs to expose itself to light on the surface of the seabed, running a much greater risk of predation.[12]
脊鸟蛤（学名：Fragum fragum），又名白莓鳥尾蛤，是鸟尾蛤科心形鳥尾蛤亞科脊鸟蛤属的一個海洋腹足綱軟體動物物種。舊屬帘蛤目，今屬鳥蛤目。本物種是脊鳥蛤屬的模式種，分佈於印度洋-西太平洋海域。
