Ophiactis delagoa   J. B. Balinsky,  1957 (Brittle Star)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Echinodermata
Class: Ophiuroidea
Order:Ophiurida
Family:Ophiactidae

Description
Color: Aboral disc color green to brownish, with some variegation, with a dark spot near the distal end of each radial shield; oral disc color dirty grey.

Five arms, three to four times the disc diameter. Disc scales naked with pointed spinelets. Radial shields half of the disc radius or less, not contiguously in contact. Oral shields broader than long, rounded spear-head, with a distal lobe. Adoral plates meet radially. Single small oral papillae (two distal lateral papillae, no infradental papillae). Aboral arm plates twice as broad as long, fan-shaped, rounded lateral angles. Oral arm plates broader than long, bell-shaped, in contact with the next plate. Aboral side of the arms cross-banded every few segments, oral side lighter, sometimes somewhat banded. One large oval tentacle scale. Four arm spines, but five on the more proximal arm segments in large specimens, as long as the segment.


Synonym (s)
Ophiactis delagoa Clark and Rowe, 1971

Common Name (s)
Economic Importance and Threats

Ecology
Habitat:  Reef Associated, Sandy

Biogeography


• West Bengal, Sundarbans (Lat: 21.5) (Long: 88.17) INDIA
• West Bengal, Bakkhali INDIA (Record: 10/04/1978, 11/04/1978)
• West Bengal, Sagar Island INDIA (Record: 22/03/1981)
• West Bengal, Matla, Pareymari INDIA (Record: 09/11/1988)
• Tamil Nadu, Gulf of Mannar INDIA
• INDIA

Literature Source(s)
  • Tikadar, BK; Daniel, A and Subbarao, NV (1986) Sea shore animals of Andaman and Nicobar Islands The Director, ZSI, Kolkatta 188 Available at - ZSI, Pune
  • Ramakrishna; Sarkar, J and Talukdar, S (2003) Marine invertebrates of Digha coast and some recomendations on their conservation Records of the Zoological Survey of India ZSI, Kolkata 101(3-4) 1 Available at - NCL, Pune
  • Mandal, AK and Nandi, NC (1989) Fauna of Sundarban mangrove ecosystem, West Bengal, India Fauna of Conservations 3 35431 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
  • Sastry, DRK (1995) Asteroidea, Ophiuroidea and Echinoidea (Echinodermata) Estuarine ecosystem series, Part 2: Hugli Matla Estuary ZSI, Calcutta 327-338 Available at - NIO, Goa
  • Dr. Ramesh, R; Dr. Nammalwar, P and Dr. Gowri, VS (2008) Database on coastal information of Tamil Nadu Report Submitted to Environmental Information System (ENVIS) Centre, Department of Environment, Government of Tamil Nadu Institute for Ocean Management, Anna University, Chennai, Tamil Nadu. Available at - http://tnenvis.nic.in/PDF/coastal%20data.pdf
  • Sastry, DRK (2007) Echinodermata of India : An annotated list Records of Zoological Survey of India Occassional paper No. 271 ZSI, Kolkata 1-387 Available at - http://zsi.gov.in/checklist/Echinodermata_India_Checklist.pdf

Page last updated on:2011-04-12

Back to Search