Ecological morphotaxometry of trematodes of garfish (Teleostomi: Belonidae) from Gangetic riverine ecosystem in India. I
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ORIGINAL ARTICLE
Ecological morphotaxometry of trematodes of garfish (Teleostomi: Belonidae) from Gangetic riverine ecosystem in India. I. Morphology and taxometric assessment of Cephalogonimus yamunii n.sp. Sushil K. Upadhyay • Neeshma Jaiswal • Anshu Malhotra • Sandeep K. Malhotra
Received: 26 May 2012 / Accepted: 17 August 2012 Ó Indian Society for Parasitology 2012
Abstract A new endoparasitic fluke, Cephalogonimus yamunii n.sp. is described from the intestine of freshwater fish Xenentodon cancilla (Belonidae). The worms could be differentiated from C. amphiumae (Chandler 1932), C. apognichthysi (Gupta and Puri 1982), C. hanumanthai (Agrawal and Agarwal 1984), C. salamandrus (Dronen and Lang 1974), C. simhai (Singh 2010) and C. vesicaudus (Nickerson 1912) in a unipartite seminal vesicle, genital pore subterminal anteriorly, opening at the hind end of oral sucker, equatorial or sub-equatorial testes, besides other morphological attributes of shorter body and pharynx, larger oesophagus and oral sucker, smaller ventral sucker, testes, cirrus sac and ovary, and a terminal excretory pore. Taxometric substantiation has been presented by using Polythetic Divisive Classificatory System, and ecological attributes have been evaluated to validate specific distribution patterns in population dynamics of the new species in simultaneous contributions.
Sushil K. Upadhyay—Part of D.Phil. thesis awarded by the Allahabad Central University, U.P., India. S. K. Upadhyay N. Jaiswal (&) A. Malhotra S. K. Malhotra Parasitology Laboratory, Department of Zoology, University of Allahabad, Allahabad 211002, UP, India e-mail: [email protected] S. K. Malhotra e-mail: [email protected] Present Address: A. Malhotra Department of Neurological Surgery, Vanderbilt University Medical Center, D-4108, Medical Center North, Nashville, TN 37232, USA e-mail: [email protected]
Keywords Cephalogonimus yamunii Xenentodon cancilla Polythetic Divisive Classificatory System Unipartite seminal vesicle Taxometric Ecological
Introduction Cephalogonimus (Poirier 1886) is a parasite of family Cephalogonimidae, reported initially from amphibians. Several species of this genus were known from fishes in various parts of the world namely C. hanumanthai (Agrawal and Agarwal) from Mystus vittatus, C. heteropneustus (Gupta) from Heteropneustes fossilis, C. indicus (Gupta) from Lissemys punctata, C. japonicus (Ogata) from Amyda japonica, C. lenoiri (Poirier) from Tetrathyra vaillauti, C. magnus (Sinha), C. mehri (Pande) and C. mukerjius (Rai) from Trionyx gangeticus, T. nilotica and T. hurum, respectively, C. minutum (Mehra) from L. punctata, C. seenghalus (Kakaji) from Mystus seenghala, C. simhai (Singh) from Clarias batrachus, C. sireni (Premvati) from Florida mud eels, C. trachysauri (MacCallum) from Trachisaurus rugosus and C. vesicaudus (Nickerson) from Aspidonectes sp. The morphological features of the newer worms being described herein as C. yamunii n.sp. were subjected to taxometric analysis using Polythetic Divisive Clas
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