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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 .
Dichocoenia stokesi is a massive colonial coral that forms rounded humps up to 40 centimetres (16 in) in diameter or thick plates. It is recognisable by the fact that many of the corallites, the stony cups from which the coral polyps protrude, can be oval, or elongated.
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 ...
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;
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.
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 ...
Ctenella chagius is a massive, hemispherical, colonial coral with a fissured surface and brain-like appearance. The individual polyps that secrete the stony skeleton project from stony cups called corallites arranged in rows in long meandering valleys. The width between the solid ridges on either side is about 1.5 cm (0.6 in) with the valleys ...