Lepas anserifera   Linnaeus,  1767 (Barnacle)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Arthropoda
Class: Maxillopoda
Order:Pendunculata
Family:Lepadidae

Image copyrights: Erin Dickinson

Description
Capitulum: Broadly triangular, slightly compressed; occludent margin protruberant and arched below; carinal margin curved. Capitular valves five; thick opaque and white with strong radiating ridges and lines of growth; dark reddish interspaces indistinct or absent.

Scutum: Sub-triangular; occludent margin uniformly arched; carinal margin arched at the base. The ridge from the umbo to apex prominent; space between occludent margin and ridge wide; basal margin slightly arched. Sometimes radial ridges faint; well developed umbonal tooth at right scutum.

Tergum: Quadrilateral; apex almost truncated, sometimes rounded off; occludent margin straight, slanting outwards; scutal margin about three times as long as occludent margin; carinal margin oblique; more distinctly furrowed than the scutum.

Carina: Laterally broad and tapering above; almost reaching the carinal angle of tergum; external surface had fine, longitudinal striae prominently denticulated at base; dorsally, slightly barbed in young specimens and smooth in older specimen; carinal base with broad, outwardly reflexed branch, ending bluntly; deeply notched between the base and the branch; prongs short, lying close and parallel to basal margin of scutum.

Peduncle: Cylindrical; about as long, rarely longer than capitum; color varies from dark purple to orange; mostly orange at base.

Filamentary appendages: Five on either side, one on either side of the prosoma and the other four in pairs beneath the basal articulation of the cirrus. Upper pairs often rudimentary.

Mouth parts: (i) Labrum: slightly bullate; with a row of 75-80 large conical teeth among the long and dense hairy margin of the crest.
(ii) Mandible: with six teeth; first tooth large and far removed from rest with deeply marked notch; upper and lower margins of all teeth armed with several minute denticles; sixth tooth armed with several short, pointed spines at the tip; lateral surface, especially towards the lower teeth, clothed with strong setae; inferior and superior margins densely setose.
(iii) Maxilla: Cutting margin with four steps; first step oblique with an upper pair of stout spines, one of which always longer; lower pair slender and equally longer; in between are 5-6 short spinules; remaining steps with straight edges with varying number of slender spines in double row of inner short and outer long and non pectinated; body clothed with numerous long spinules; hairs on the lower margin denser than the upper margin.


Synonym (s)
Lepas anserifera Broch, 1942a
Lepas anserifera Darwin, 1851
Lepas anserifera Gruvel, 1912
Lepas anserifera Nilsson-Cantell, 1938
Lepas anserifera Stubbings, 1961a

Common Name (s)
Economic Importance and Threats

Ecology
Habitat:  Pelagic, Coastal

Biogeography


• Tamil Nadu, Chennai (Lat: 13.09) (Long: 80.29) INDIA
• Tamil Nadu, Parangipettai INDIA
• West Bengal, Sundarbans (Lat: 21.5) (Long: 88.17) INDIA
• Orissa, Puri INDIA
• Andhra Pradesh, Off Godavari Delta INDIA
• West Bengal, Hugli Matla River Mouth INDIA
• Andhra Pradesh, Krishna Estuary INDIA
• Tamil Nadu, Pazhayar INDIA
• Andaman and Nicobar Islands, Great Nicobar Island, Sibi Nallah INDIA
• Andaman and Nicobar Islands, Great Nicobar Island, Dillon Nallah INDIA
• Tamil Nadu, Kalpakkam INDIA
• Andaman and Nicobar Islands, Great Nicobar Island, Swaroop Nallah INDIA
• Tamil Nadu, Kodikkarai INDIA
• Tamil Nadu, Periyakuppam INDIA
• Tamil Nadu, Mandapam INDIA
• West Bengal, Digha INDIA
• Tamil Nadu, Nagapattinam INDIA
• Tamil Nadu, Chennai INDIA
• Orissa, Puri beach INDIA
• Tamil Nadu, Krusadai Island INDIA

Literature Source(s)
  • Nagabhushanam, AK and Krishnan, S (1993) Observations on the distribution of some of the marine organism inhabiting the inter-tidal zone along the western continental shelf of the Bay of Bengal, with particular reference to the Tamil Nadu coastal strip Records of the Zoological Survey of India 93(3-4) 449-490 Available at - ZSI, Pune
  • Hussain, SM Brief report on biodiversity in the coastal areas of Pakistan p 113
  • Mandal, AK and Nandi, NC (1989) Fauna of Sundarban mangrove ecosystem, West Bengal, India Fauna of Conservations 3 35431 Available at - NIO, Goa
  • Fernando, SA (2006) Monograph on Indian Barnacles Ocean science and technology Cell, Kochi 9-199 Available at - NIO, Goa
  • Fernando, AS and Fernando, OJ (2002) A field guide to the common invertebrates of the east coast of India Centre of Advanced Study in Marine Biology 1-258 Available at - NIO, RC Kochi
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • PBase Available at - http://www.pbase.com/
  • 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
  • Balaji,K; Thirumaran, G, Arumugam, R, Kumaraguruvasagam, KR and Anantharaman, P (2007) Marine ornamental invertebrate resources of Parangipettai coastal waters (south east coast of India) Journal of fisheries and aquatic science Academic Journals 2(5) 328-336 Available at - http://docsdrive.com/pdfs/academicjournals/jfas/2007/328-336.pdf

Page last updated on:2011-02-18

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