Acropora divaricata   (Dana,  1846) (Hard Coral)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Cnidaria
Class: Anthozoa
Order:Scleractinia
Family:Acroporidae

Image copyrights: Australian Institute of Marine Sciences

Description
Color: Usually dark brown or greenish-brown, sometimes with light-brown or blue branch tips or dark blue with whitish tips.

Colonies have an exceptionally wide range of growth-forms especially a distinctive divergent branching pattern within a bracket or rounded arborescent table shape. Branches may be flattened or tapered with open caespito-coymbose. Axial corallites are often devoid of radial corallites on their upper surface. Radial corallites are similar and are usually aligned along branches with nariform, large and open calices. Distal radial corallites are tubo-narifom and towards the base of the branches they may be appresssed tubular.

Hermaphroditic, broadcast spawning.

Similar species: This species is similar to Acropora solitaryensis, which has more highly fused basal branches.


Synonym (s)
Madrepora divaricata Dana, 1846

Common Name (s)
• Small Polyp Stone Coral (English)
• Table Coral (English)
Economic Importance and Threats
Threats:  Natural threats, Anthropogenic
(Protected under Indian Wild Life Protection Act)
Threats:  Natural threats
(Members of this genus have a low resistance and low tolerance to bleaching and disease, and are slow to recover)
Threats:  Anthropogenic
(Fisheries, human development (industry, settlement, tourism, and transportation), changes in native species dynamics (competitors, predators, pathogens and parasites), invasive species (competitors, predators, pathogens and parasites), dynamite fishing, chemical fishing, pollution from agriculture and industry, domestic pollution, sedimentation, and human recreation and tourism activities)

Ecology
Habitat:  Reef Associated
Trophic Level:  Consumer
Prey:  Plankton
Predator:  Butterflyfishes (Chaetodon trifascialis and Chaetodon trifasciatus)
IUCN Status:  NearThreatened

Biogeography


• Andaman and Nicobar Islands INDIA
• SEYCHELLES
• Tamil Nadu, Kilakarai, Mulli INDIA (Record: 00/09/2004-00/06/2005) (Depth: -(2-10) mts)
• Andaman and Nicobar Islands, South Andaman, Pongibalu INDIA
• Tamil Nadu, Krusadai Island (Lat: 9.25) (Long: 79.2) INDIA (Record: 03/2005-05/2005)

Literature Source(s)
  • (2002) Andaman and Nicobar Islands biodiversity strategy and action plan (Version: 3)
  • (2003) IUCN Red list of threatened species Available at - http://www.iucnredlist.org/
  • Ocean Biogeographic Information System Available at - http://www.iobis.org/
  • Mazlan, AG; Zaidi, CC; WanLotfi, WM and Othman, BHR (2005) On the current status of coastal marine biodiversity in Malaysia Indian Journal of Marine Sciences National Institute of Science Communication And Information Resources, CSIR, New Delhi, India, in association with Indian National Science Academy, New Delhi, INDIA 34(1) 76-87 Available at - NIO, RC, Kochi
  • Cairns, DS; Hoeksema, WB and Derland, JV (1999) List of extant stony corals Atoll Research Bulletin National Museum of Natural History, Smithsonian Institution, Washington, D. C, U. S. A 459 13-46 Available at - NIO, RC, Kochi
  • Allen, GR (2005) Reef fishes of northwestern Madagascar RAP Bulletin of Biological Assessment 31 39-48
  • Advanced Aquarist Available at - http://www.advancedaquarist.com/
  • Sealifebase Available at - http://www.sealifebase.org/
  • Wafar, MVM and Wafar, S (2001) 101 questions on corals: Towards awareness National Institute of Oceanography, Goa and Administration of the U.T. of Lakshadweep 81 pp Available at - NIO, Goa
  • Carpenter, KE; Abrar, M; Aeby, G; Aronson, RB; Banks, S et al. (2008) One third of reef building corals face elevated extinction risk from climate change and local impacts Science American Association for the Advancement of Science 321 125-126 Available at - http://sci.odu.edu/gmsa/about/Carpenter_corals_supplimental.pdf
  • Australian Institute of Marine Science Available at - http://www.aims.gov.au/
  • Reeflex Available at - http://www.reeflex.net/
  • Graham, NAJ (2007) Ecological versatility and the decline of coral feeding fishes following climate driven coral mortality Marine Biology Springer Berlin / Heidelberg 153(2) 119-127 Available at - http://www.springerlink.com/content/9603851204hwv725/fulltext.pdf
  • Sukumaran, S; George, RM and Kasinathan, C (2008) Community structure and spatial patterns of hard coral biodiversity in Kilakarai group of islands in Gulf of Mannar, India Journal of the Marine Biological Association of India The Marine Biological Association of India, Cochin, India 50(1) 79-86 Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Venkataraman, K; Satyanarayana, CH; Alfred, JRB and Wolstenholme, J (2003) Handbook on hard corals of India ZSI, Kolkata 266 pp Available at - NIO, Goa
  • Indian Wild Life Protection Act, 1972
  • Raguraman, R; Sreeraj, CR; Immanuel, T and Raghunathan, C (2010) Intensive study on the Scleractinian coral diversity of Pongibalu, south andaman Journal of Environment and Sociobiology Social Environmental and Biological Association, Kolkata, India 7(1) 29-36 Available at - NIO,Goa
  • Sukumaran, S; George, RM and Kasinathan, C (2007) Biodiversity and community structure of coral reefs around Krusadai Island, Gulf of Mannar, India Indian Journal of Fisheries Indian Council of Agricultural Research 54(3) 275-282 Available at - http://epubs.icar.org.in/ejournal/index.php/IJF/article/view/6940/2673

Page last updated on:2013-05-08

Back to Search