World Library  
Flag as Inappropriate
Email this Article


Article Id: WHEBN0002168731
Reproduction Date:

Title: Acropora  
Author: World Heritage Encyclopedia
Language: English
Subject: Coral, White pox disease, Deep-water coral, Coral Triangle, Aquaculture of coral
Collection: Acroporidae, Articles Containing Video Clips, Coral Reefs
Publisher: World Heritage Encyclopedia


Acropora pulchra
Scientific classification
Kingdom: Animalia
Phylum: Cnidaria
Class: Anthozoa
Order: Scleractinia
Family: Acroporidae
Genus: Acropora
Oken, 1815[1]

See text

Acropora is a genus of small polyp stony coral in the phylum Cnidaria.[2] Some of its species are known as table coral, elkhorn coral, and staghorn coral. Over 149 species are described.[3] Acropora species are one of the major reef corals responsible for building the immense calcium carbonate substructure that supports the thin living skin of a reef.


  • Anatomy and distribution 1
  • Threats 2
  • Reef-keeping 3
  • Species 4
  • References 5
  • Further reading 6
  • External links 7

Anatomy and distribution

Depending on the species and location, Acropora species may grow as plates or slender or broad branches. Like other corals, Acropora corals are colonies of individual polyps, which are about 2 mm across and share tissue and a nerve net. The polyps can withdraw back into the coral in response to movement or disturbance by potential predators, but when undisturbed, they protrude slightly. The polyps typically extend further at night to help capture plankton and organic matter from the water.

Acropora is most common in shallow reef environments with bright light and moderate to high water motion. Many small reef fishes live near their colonies and retreat into the thicket of branches if threatened.


Symbiodinium, symbiotic algae, live in the corals' cells and produce energy for the animals through photosynthesis. Environmental destruction has led to a dwindling of populations of Acropora, along with other coral species. Acropora is especially susceptible to bleaching when stressed. Bleaching is due to the loss of the coral's zooxanthellae, which are a golden-brown color. Bleached corals are stark white and may die if new Symbiodinium cells cannot be assimilated. Common causes of bleaching and coral death include pollution, abnormally warm water temperatures, increased ocean acidification, sedimentation, and eutrophication.


Close-up of a network of Acropora polyps

Most Acropora species are brown or green, but a few are brightly colored, and those rare corals are prized by aquarists. Captive propagation of Acropora is widespread in the reef-keeping community. Given the right conditions, many Acropora species grow quickly, and individual colonies can exceed a meter across in the wild. In a well-maintained reef aquarium, finger-sized fragments can grow into medicine ball-sized colonies in one to two years. Captive specimens are steadily undergoing changes due to selection which enable them to thrive in the home aquarium. In some cases, fragments of captive specimens are used to repopulate barren reefs in the wild.[4]

Acropora species are challenging to keep in a home aquarium. They require bright light, stable temperatures, regular addition of calcium and alkalinity supplements, and clean, turbulent water.

Common parasites of colonies in reef aquariums are the Acropora-eating flatworm, and "red bugs" (Tegastes acroporanus).


Acropora (Acroporidae) at French Frigate Shoals, northwestern Hawaiian Islands


  1. ^ WoRMS (2010). Oken, 1815"Acropora".  
  2. ^ "Acropora".  
  3. ^ atAcropora Encyclopedia of Life
  4. ^ "Restoration". The Global Coral Repository. 2011. 

Further reading

  • Reyes-Bermudez A. et al. 2009. Differential expression of three galaxin-related genes during settlement and metamorphosis in the scleractinian coral Acropora millepora. BMC Evolutionary Biology 2009, 9:178. doi:10.1186/1471-2148-9-178
  • Shinzato, C., Shoguchi, E., Kawashima, T., Hamada, M., Hisata, K., Tanaka, M., Fujie, M., et al. 2011. Using the Acropora digitifera genome to understand coral responses to environmental change. Nature, advance online publication. doi:10.1038/nature10249

External links

  • "Acropora".  
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.