Platylepas hexastylos
(Fabricius,
1798) (Barnacle)
Organism information awaits expert curation
Image copyrights: Ocean Science and Technology Cell, CUSAT, Kochi
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: 7.5 mm
Color: Yellowish due to the external membrane in which it is imbedded. When the membrane is removed it is lustrous white.
Greatly depressed and oval; orifice also oval with the external surface sculptured with concentric ridges.
Shell: The porous parietes of each compartment bear a deep internal midrib which gives support to the membranous basis. Radii very narrow with alae smooth. The scuta and terga are elongated and narrow.
I cirri- 8,6; II cirri- 9,8; III cirri- 11,10; IV cirri- 24,25; V cirri- 27,27; VI cirri- 27,27.
The first segment of the anterior ramus of the first cirrus is very long. Each segment of the fourth, fifth and sixth pairs of cirri bear four pairs of spines.
Mouth parts: Labrum with deep notch and 3 teeth on either side.
Inner maxilla: The upper end of the cutting edge is slightly depressed and bears a pair of long spines; and there are three pairs of smaller spines and a simple long spine along the straight cutting edge.
Mandible: The mandible is five toothed including the lower angle; between the second and the third and between the third and fourth teeth there are two very small teeth. The lower angle bears three spines.
Size: Basal diameter: 7.5 mm
Color: Yellowish due to the external membrane in which it is imbedded. When the membrane is removed it is lustrous white.
Greatly depressed and oval; orifice also oval with the external surface sculptured with concentric ridges.
Shell: The porous parietes of each compartment bear a deep internal midrib which gives support to the membranous basis. Radii very narrow with alae smooth. The scuta and terga are elongated and narrow.
I cirri- 8,6; II cirri- 9,8; III cirri- 11,10; IV cirri- 24,25; V cirri- 27,27; VI cirri- 27,27.
The first segment of the anterior ramus of the first cirrus is very long. Each segment of the fourth, fifth and sixth pairs of cirri bear four pairs of spines.
Mouth parts: Labrum with deep notch and 3 teeth on either side.
Inner maxilla: The upper end of the cutting edge is slightly depressed and bears a pair of long spines; and there are three pairs of smaller spines and a simple long spine along the straight cutting edge.
Mandible: The mandible is five toothed including the lower angle; between the second and the third and between the third and fourth teeth there are two very small teeth. The lower angle bears three spines.
Synonym (s)
• Lepas hexastylos O. Fabricius 1798
• Platylepas bisexlobata 1854
• Platylepas bisexlobata 1912
• Platylepas hexastylos Monroe and Limpus 1979
• Platylepas hexastylos 1916
• Platylepas hexastylos 1930
• Platylepas hexastylos 1937
• Platylepas hexastylos 1955
• Lepas hexastylos O. Fabricius 1798
• Platylepas bisexlobata 1854
• Platylepas bisexlobata 1912
• Platylepas hexastylos Monroe and Limpus 1979
• Platylepas hexastylos 1916
• Platylepas hexastylos 1930
• Platylepas hexastylos 1937
• Platylepas hexastylos 1955
Common Name (s)
Economic Importance and Threats
Ecology
Biogeography
• Tamil Nadu, Chennai (Lat: 13.09) (Long: 80.29) INDIA
• Tamil Nadu, Perumanal INDIA
• Tamil Nadu, Chennai (Lat: 13.09) (Long: 80.29) INDIA
• Tamil Nadu, Perumanal INDIA
Literature Source(s)
- Mohan RSL; Dey, SC and Bairagi, SP (1998) On a resident population of the Ganges river dolphin, Platanista gangetica Journal of the Bombay Natural History Society 95(1) 39820
- 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
- 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
Page last updated on:2010-07-14
