Platylepas indicus   Daniel,  1959 (Barnacle)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Arthropoda
Class: Maxillopoda
Order:Sessilia
Family:Platylepadidae

Image copyrights: Ocean Science and Technology Cell, CUSAT, Kochi

Description
Size: Basal diameter 3.5 mm

Color: The parietes which are whitish are covered over by a yellowish membrane.

Greatly depressed and oval; orifice also oval with the external surface sculptured with concentric ridges. The body chamber of the shell is conical.
Shell: The basis is membranous, outwardly strongly convex and is larger than the orifice. The parietes are porous and each compartment is bilobed bearing an internal midrib, with only one distinct ridge on either side of the midrib. The radii are very narrow and the alae are smooth. The scuta and tergal are elongated and narrow and are almost of the same size and occupy the whole length of the orifice.
Cirri: The number of segments in the anterior and posterior rami of the cirri is as follows:
I cirri- 7,5; II cirri- 8,6; III cirri- 9,8; IV cirri- 11,11; V cirri- 11, 11; VI cirri- 11,11.
The seven jointed anterior ramus bears only pectinated setae whereas the five jointed posterior ramus bears only non-pectinated setae. The second and the third pairs of cirri are alike in shape and structure. The segments of the anterior ramus are provided with pectinated setae while the segments of the posterior ramus bear non-pectinated setae. The 4th, 5th and 6th pairs of cirri are similar. Each segment bears on the anterior margin a pair of very long pecitnated setae at the distal end and a pair of long and a pair of short setae which are non-pectinated. At the distal end of the posterior margin a pair of short spines is always present.
Mouth parts- Labrum: Labrum is broad with a deep notch and two teeth on either side close to the notch. The free margin is fringed with a number of hairs which are pectinated.
Mandible: Mandible is six toothed including the lower angle. The 1st tooth is very deeply remarked off from the rest. The 3rd, 4th and 5th teeth are double pointed.
There is a very smooth tooth in between the 2nd and 3rd teeth. The lower angle of the sixth tooth is fringed with minute hairs. The free margin bears in incisures with a pair of long and a pair of short spines above it. Below the incisures there is a pair of moderately long and a pair of moderately long and a pair of long and stout spines.


Synonym (s)
Platylepas indicus Daniel 1959

Common Name (s)
Economic Importance and Threats

Ecology

Biogeography


• Andaman and Nicobar Islands, Great Nicobar Island INDIA (Record: 15/01/2001)
• Tamil Nadu, Chennai INDIA (Record: 00/11/1951)

Literature Source(s)
  • Fernando, SA (2006) Monograph on Indian Barnacles Ocean science and technology Cell, Kochi 9-199 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

Page last updated on:2012-05-21

Back to Search