Английская Википедия:Fragum fragum
Шаблон:Short description Шаблон:Speciesbox
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.
Description
Fragum fragum grows to a length of Шаблон:Convert.[1] It has a pair of white, thick, sculptured valves with a nacreous coating on the interior.
Distribution and habitat
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 Шаблон:Convert and lives buried in the sandy seabed.[2]
Biology
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]
References
- ↑ Ошибка цитирования Неверный тег
<ref>; для сносокWoRMSне указан текст - ↑ Шаблон:Cite web
- ↑ Шаблон:Cite journal
