Schizocyathus

Schizocyathus is a monotypic genus of stony corals in the family Schizocyathidae, the only species being Schizocyathus fissilis. It is a deep water, azooxanthellate coral.

Schizocyathus
D = calyx from above
E = lateral view
Scientific classification
Kingdom: Animalia
Phylum: Cnidaria
Class: Anthozoa
Order: Scleractinia
Family: Schizocyathidae
Genus: Schizocyathus
Pourtalès, 1874 [1]
Species:
S. fissilis
Binomial name
Schizocyathus fissilis
Pourtalès, 1874 [2]

Description

Schizocyathus fissilis is a solitary species of stony coral. The single corallite can grow to a height of 25 millimetres (1 in) and a diameter of 3.5 millimetres (0.1 in). It is often horn-shaped. The septa are arranged in groups of six in three cycles. There are sometimes palliform lobes on the inner margins of the septa but the columella is weakly developed.[3]

Distribution

Schizocyathus fissilis is found in the Atlantic Ocean and the Caribbean Sea. Its range includes the coast of Florida, the Gulf of Mexico, Bermuda, Antilles and Brazil, and in the eastern Atlantic, the Azores, Portugal and Morocco. Its depth range is 88 to 3,438 metres (300 to 11,300 ft).[4]

Biology

Schizocyathus fissilis is an azooxanthellate coral which does not harbour symbiotic zooxanthellae in its tissues.[2] It feeds by extending its tentacles to catch plankton and by absorbing organic matter from the water.

Sexual reproduction takes place with the liberation of sperm and eggs into the water column. The planula larvae drift with the currents, and when fully developed, settle on the seabed and undergo metamorphosis into polyps which secrete their own calcium carbonate skeletons. Additionally, Schizocyathus fissilis has an unusual method of asexual reproduction known as parricidal budding. This is a process in which a new polyp develops on the inner surface of a fragment of a parent corallite that has split apart longitudinally.[5]

gollark: Well, yes, but it blocks BlahOS.
gollark: ```lua-- Ensure code does not contain evil/unsafe things, such as known browsers, bad OSes or Siri. For further information on what to do if Siri is detected please consult https://pastebin.com/RM13UGFa line 2 and/or the documentation for PS#ABB85797 in this file.function potatOS.check_safe(code) local lcode = strip_comments(string.lower(code)) for category, list in pairs(banned) do for _, thing in pairs(list) do if string.find(lcode, '[^"]' .. string.lower(thing)) then --local ok, err = pcall(potatOS.make_paste, ("potatOS_code_sample_%x"):format(0, 2^24), code) --local sample = "[error]" --if ok then sample = "https://pastebin.com/" .. err end local text = string.format([[This program contains "%s" and will not be run.Classified as: %s.%sIf you believe this to be in error, please contact the potatOS developers.This incident has been reported.]], thing, category, category_descriptions[category]) potatOS.report_incident(string.format("use of banned program classified %s (contains %s).", category, thing), {"safety_checker"}, { code = code, extra_meta = { program_category = category, program_contains = thing, program_category_description = category_descriptions[category] } }) return false, function() printError(text) end end end end return trueend```
gollark: There's a bit of code in `load` which checks user code for stuff which looks like known virii/bad OSes.
gollark: I may need to improve the potatOS antivirus.
gollark: I've not *heard* of one.

References
  1. Cairns, Stephen (2015). "Schizocyathus Pourtalès, 1874". WoRMS. World Register of Marine Species. Retrieved 2015-06-22.
  2. Hoeksema, Bert (2015). "Schizocyathus fissilis Pourtalès, 1874". WoRMS. World Register of Marine Species. Retrieved 2015-06-22.
  3. Cairns, Stephen D. (2000). "A revision of the shallow-water Azooxanthellate Scleractinia of the western Atlantic". Organización para Estudios Tropicales, (OET), Costa Rica: Bibliografía Nacional en Biología Tropical, (BINABITROP). 75: 1–231.
  4. "Schizocyathus fissilis". Encyclopedia of Life. Retrieved 2015-06-23.
  5. Cairns, Stephen D.; Kitahara, Marcelo V. (2012). "An illustrated key to the genera and subgenera of the recent azooxanthellate Scleractinia (Cnidaria, Anthozoa), with an attached glossary". ZooKeys. 227: 1–47. doi:10.3897/zookeys.227.3612. PMC 3487648. PMID 23166463.
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