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Stony coral tissue loss disease (SCTLD) is a disease of corals that first appeared off the southeast coast of Florida in 2014. It originally was described as white plague disease . [ 1 ] By 2019 it had spread along the Florida Keys and had appeared elsewhere in the Caribbean Sea .
Stony corals are members of the class Anthozoa and like other members of the group, do not have a medusa stage in their life cycle. The individual animals are known as polyps and have a cylindrical body crowned by an oral disc surrounded by a ring of tentacles. The base of the polyp secretes the stony material from which the coral skeleton is ...
Florida's coral reefs are currently undergoing an unprecedented stony coral tissue loss disease. The disease covers a large geographic range and affects many species of coral. [85] In January 2019, science divers confirmed that the outbreak of stony coral tissue that extends south and west of Key West.
The coral benefits from the nutrients produced photosynthetically by the alga which provides part of its needs for growth and calcification. [ 11 ] The coral also has a relationship with Diadema antillarum , the long-spined urchin, whose grazing helps to reduce the effects of shading, as well as the overgrowth of macroalgae .
Pages in category "Coral diseases" The following 9 pages are in this category, out of 9 total. ... Stony coral tissue loss disease; W. White band disease;
It includes all of the stony corals, most of which are colonial and reef-forming, as well as all sea anemones, and zoanthids, arranged within five extant orders. [2] The hexacorallia are distinguished from another class of Anthozoa, Octocorallia , in having six or fewer axes of symmetry in their body structure; the tentacles are simple and ...
It is found in the Indo-Pacific [2] and is the most abundant coral species in Xuwen Coral Reef National Nature Reserve. G. astreata is acclimatized to water temperatures ranging from about 27 ± 0.5 °C. [3] It is generally a shallow-water coral and is commonly seen at a depth of around 15 meters. It can range from a depth of 1 meter to 30 ...
Several small crabs are obligate associates of corals, feeding on coral tissues but protecting the coral from attack by predators such as the crown-of-thorns starfish. One of these, Cymo melanodactylus , lives in association with Acropora cytherea but its low numbers (fewer than three per coral) mean that its host suffers little harm.