Sphaerolaimus pacificus   Allgen,  1947 (Marine Worm)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Nematoda
Class: Adenophorea
Order:Monhysterida
Family:Sphaerolaimidae

Description
Size: Female: 1.4-1.6 mm long.

Cuticle finely striated up to helmet region. Sexual dimorphism of head and setae lacking. Pigmented helmet 20 µm long and 30 µm wide with shallow anterior scallops. Stoma 30 µm deep with heavily sclerotized walls and hemispherical projection posteriorly. Six labial setae present. Ten cephalic setae 4 µm long. Eight groups of cephalic setae of 3 each 10-15 µm long. Several scattered cervical setae 10-16 µm long. Amphid oval, 0.25 head diameter wide and situated on lower part of stoma. Oesophagus cylindrical with heavily sclerotized lining and short intestinal valve. Nerve ring 46 %. Excretory pore 64 %. Tail conical-cylindrical and 3.4 anal diameters long with 3 terminal setae.


Synonym (s)
Sphaerolaimus pacificus Allgen, 1947

Common Name (s)
Economic Importance and Threats

Ecology
Habitat:  Estuarine, Muddy, Coastal

Biogeography


• West Bengal, Digha beach (Lat: 21.65) (Long: 87.63) INDIA
• Andaman and Nicobar Islands, Bomila Creek INDIA (Record: 19/03/1990)
• Andaman and Nicobar Islands, Bamboo Flat (Lat: 11.5) (Long: 92.6) INDIA
• Andaman and Nicobar Islands, Bamboo Flat (Lat: 11) (Long: 92.75) INDIA
• Andaman and Nicobar Islands, Great Nicobar, Bonnet Bay (Lat: 6.75) (Long: 93.63) INDIA
• Andaman and Nicobar Islands, Great Nicobar, Bonnet Bay (Lat: 7.25) (Long: 93.93) INDIA
• Andaman and Nicobar Islands, Great Nicobar, Indira Point INDIA
• Andaman and Nicobar Islands, Great Nicobar, Bonnet Bay INDIA
• Andaman and Nicobar Islands, South Andaman, Aberdeen Bay INDIA

Literature Source(s)
  • Rao, GC (1993) Littoral meiofauna of Little Andaman Records of the Zoological Survey of India. Occasional paper no. 155 ZSI, Calcutta 120 pp Available at - NIO, Goa
  • Chandrasekhara, G and Mishra, A (1986) The meiofauna and macrofauna of Digha beach, West Bengal, India Records of the Zoological Survey of India ZSI, Kolkata 83(3-4) Available at - NCL, Pune
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Rao, GC (1986) Meiofauna of the Mangrove sediments in South Andaman Journal of the Andaman Science Association Andaman Science Association, Port Blair 2(2) 23-32 Available at - NIO,Goa
  • Rao, GC (1988) Meiofauna of the intertidal sediments on Great Nicobar Journal of the Andaman Science Association Andaman Science Association, Port Blair 4 (2) 89-100 Available at - NIO, Goa
  • Rao, GC (1989) On some free living marine nematodes of the Bay Islands Journal of the Andaman Science Association Andaman Science Association, Port Blair 5(1) 1-22 Available at - NIO, Goa
  • Rao, GC (1989) Ecology of the meiofauna of sand and mud flats around Port Blair Journal of the Andaman Science Association Andaman Science Association, Port Blair 5(2) 99-107 Available at - NIO, Goa

Page last updated on:2011-06-27

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