Turbanella aminensis   Rao,  1991 (Gastrotrich)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Gastrotricha
Class:
Order:Macrodasyida
Family:Turbanellidae

Description
Size: Length upto 550 µm and maximum width 70 µm.

Body is elongated, strap-shaped, widest in the middle region and slightly tapers towards the posterior end. Head is 60 µm in maximum width, not clearly demarcated from trunk, rounded anteriorly and bears no lateral appendages. Posterior end is deeply cleft and bilobed. The caudal lobes are short, triangular and reach about 25 µm in length. A median caudal cone is absent between the 2 caudal lobes.

Cuticle is thin and transparent without any dorsal armament such as scales, spines, papillae, etc. About 12 pairs of dorsolateral epidermal glands, 10 µm in maximum diameter, are present. A circumcephalic ring of cilia measuring 10-12 µm in length occur on the head. Anteriorly, the head bears short sensory cilia 6-8 µm long. 12+9 pairs of laterally directed sensory bristles occur inserted anteriorly to the lateral and dorsolateral adhesive tubes. Five pairs of anterior tubes 6-8 µm long occur on well developed and extensible ventrolateral feet located behind the circumcephalic ciliary girdle. 12 pairs of ventrolateral tubes measuring about 10 µm in length are present. The tubes do not carry any sensory hairs at their tips. 9 pairs of dorsolateral tubes 8 µm in length occur in a bilateral symmetry behind the circumcephalic ciliary girdle. The tubes also lack sensitive bristles at their tip. 6 posterior tubes occur on the inner edge of each caudal lobe. The tubes are 6-12 µm long and their length progressively increases to the outside. The outer edge of the caudal lobe, however, carries no adhesive tubes. The mouth is terminal and 20 µm wide. Buccal cavity is small and conical. Pharynx is about 150 µm long and occupies slightly less than 1/3 of the total gut length. Pharyngeal pores are conspicuous at the posterior end of pharynx. Intestine is about 330 µm long and narrows progressively to the posterior end. Anus is subterminal and opens on the ventral surface in front of the caudal lobes about 20 µm from the posterior border.

Reproductive system consists of paired testis which extends lateral to the anterior part of the intestine, with the vasa deferentia bending in the region of egg cells. Male genital pore is indistinct.


Synonym (s)

Common Name (s)
Economic Importance and Threats

Ecology
Habitat:  Demersal, Sandy, Coastal

Biogeography


• Lakshadweep, Amini (Lat: 11.11) (Long: 72.73) INDIA (Record: 27/02/1983) (Depth: 0.1 mts)
• Lakshadweep, Kadamatt INDIA (Record: 30/01/1987)
• Lakshadweep, Amini INDIA

Literature Source(s)
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Rao, GC (1991) Meiofauna State fauna series 2: Fauna of Lakshadweep ZSI, Calcutta 41-135 Available at - NIO, Goa
  • Priyalakshmi, G and Menon, NR (2008) Indian marine Gastrotricha Available at - http://www.gastrotricha.unimore.it/Indian-marine.pdf
  • Sealifebase Available at - http://www.sealifebase.org/

Page last updated on:2010-11-22

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