title: Morphology and morphogenesis of a new oxytrichid ciliate,Notohymena limusn. sp. (Ciliophora, Oxytrichidae) from Delhi, India.
abstract: The morphology and morphogenesis of a new oxytrichid ciliate,Notohymena limusn. sp. were studiedin vivoand after protargol impregnation. The new ciliate was isolated from the sewage sludge at Delhi Jal Board Sewage Treatment Plant located at Rithala, Delhi, India, using the non-flooded Petri dish method.N. limusn. sp. is characterized as follows: flexible dorsoventrally flattened ellipsoidal body;Notohymena-pattern undulating membranes; adoral zone of membranelles (AZM) occupied about 39% of the body length, and consists of around 26 membranelles; large and deep buccal cavity; colorless subpellicular granules present in groups and arranged around the bases of dorsal bristles; 4 macronuclear nodules; 2 micronuclei; 18 fronto-ventral-transverse (FVT) cirri in typicalOxytricha-pattern; 6 dorsal rows of bristles; 3 caudal cirri; about 16 right and 15 left marginal cirri;N. limusn. sp. is a new species on the basis of the combination of morphological, morphometric and morphogenetic characteristic features.
authors.affiliation: Zoology Department, Zakir Husain Delhi College, University of Delhi, Delhi, India.
authors.forename: Ilams
authors.initials: I
authors.lastname: Naqvi
authors.affiliation: Zoology Department, Maitreyi College, University of Delhi, Delhi, India.
authors.forename: Renu
authors.initials: R
authors.lastname: Gupta
authors.affiliation: Ciliate Biology Laboratory, Department of Zoology, Acharya Narendra Dev College, University of Delhi, Delhi, India.
authors.forename: Seema
authors.initials: S
authors.lastname: Makhija
authors.affiliation: Ciliate Biology Laboratory, Department of Zoology, Acharya Narendra Dev College, University of Delhi, Delhi, India.
authors.forename: Ravi
authors.initials: R
authors.lastname: Toteja
authors.affiliation: Ciliate Biology Laboratory, Department of Zoology, Acharya Narendra Dev College, University of Delhi, Delhi, India.
authors.forename: Jeeva S
authors.initials: JS
authors.lastname: Abraham
authors.affiliation: Ciliate Biology Laboratory, Department of Zoology, Acharya Narendra Dev College, University of Delhi, Delhi, India.
authors.forename: S
authors.initials: S
authors.lastname: Sripoorna
authors.affiliation: Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia.
authors.forename: Hamed A
authors.initials: HA
authors.lastname: El-Serehy
authors.affiliation: Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia.
authors.forename: Fahad A
authors.initials: FA
authors.lastname: Al-Misned
keywords: Morphogenesis; Morphology; Notohymena; Oxytrichidae