Papers by ramakant maurya
Biochemical and Cellular Archives
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Agricultural Science Digest - A Research Journal, 2021
Background: Heteropneustes fossilis (Bloch, 1794) is one of the popular freshwater fish known for... more Background: Heteropneustes fossilis (Bloch, 1794) is one of the popular freshwater fish known for its food quality and nutritional value. This study was undertaken with an aim to find out histopathological changes in the intestine of freshwater fish Heteropneustes fossilis, host of trematode parasite Masenia vittatusia Agarwal, 1963. Methods: The intestine of uninfected fish used to determine normal anatomy, while infected intestine to determine pathological changes. The normal histological procedure was followed, which included fixing, rinsing, dehydrating and embedding of tissue. Tissue was cut in 4-6 µm thick sections using a rotary microtome. Haematoxylin and eosin stains were used. Result: The highest damage was observed in the mucosal layer with ruptured and fused microvilli, hyperplasia of villi, damaged columnar epithelium layer and spread of loose connective tissue into the lumen. Other degenerative modifications included hypertrophy of blood vessels in mucosa and musculari...
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Background: Acanthocephalans are fish parasites of worldwide distribu-tion, penetrate their thorn... more Background: Acanthocephalans are fish parasites of worldwide distribu-tion, penetrate their thorny proboscis into the intestinal wall of host and absorb nutrients. No diagnostic tool is available except postmortem inves-tigations and identification by parasitologists. The aim of present study was to explore and assign taxonomical status to Pallisentis species prevalent in food fishes of river Gomti, Lucknow, India. Methods: A survey of fishes of river Gomti was carried out during the year 2011-2013. Acanthocephalans recovered from the intestine of Channa punctatus were kept in refrigerator for eversion of proboscis, fixed in A.F.A. fixative (50 % alcohol, formalin and acetic acid in ratio of 100: 6: 2.5) for 24 hours further preserved in 70 % ethanol. Camera Lucida diagrams of acetoalum carmine stained permanent mounts were made for morphomet-ric studies. Results: Two new species of genus Pallisentis were identified and named as
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Comparative Parasitology, 2018
A new species of Asymphylodora (Trematoda: Lissorchiidae) is described from the intestine of a ba... more A new species of Asymphylodora (Trematoda: Lissorchiidae) is described from the intestine of a bata (Labeo bata) collected from the Sharda Canal in Biswan (Sitapur), state of Uttar Pradesh, India. This is the fifth species of Asymphylodora named in India and the largest specimens reported from India (other than Asymphylodora indica, Asymphylodora kedarai, Asymphylodora ritai, and Asymphylodora punctatusi). It is also the second largest known in the genus next to Asymphylodora atherinopsidis. Members of the new species are similar to A. kedarai and A. punctatusi in that they possess the genital pore and cirrus on the right side of body rather than left as in the other species in world. In the new species the prepharynx is well developed, the esophagus is longer, the ceca extend posterior to the end of the testis, the size of testis is much larger, the vitellaria extend to near the anterior end of the ovary, there are both a spiny cirrus and a metraterm, and the body is longer than in both A. kedarai and A. punctatusi. Moreover, specimens of new species possess an ovary overlapping the anterodorsal margin of the testis rather than a pretesticular ovary as in A. punctatusi, and the sucker width ratio differs (1:0.90 in the newly described species versus 1:0.84 in A. punctatusi). The newly described species can be distinguished from A. kedarai by the presence of an undivided unipartite seminal vesicle and in relation to sucker width ratio (1:1.55 in A. kedarai). This is the first report of a species in the genus Asymphylodora from L. bata. Diagnosis for the genus is amended.
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Iranian Journal of Parasitology, 2015
Background: Acanthocephalans are fish parasites of worldwide distribution, penetrate their thorny... more Background: Acanthocephalans are fish parasites of worldwide distribution, penetrate their thorny proboscis into the intestinal wall of host and absorb nutrients. No diagnostic tool is available except postmortem investigations and identification by parasitologists. The aim of present study was to explore and assign taxonomical status to Pallisentis species prevalent in food fishes of river Gomti, Lucknow, India. Methods: A survey of fishes of river Gomti was carried out during the year 2011–2013. Acanthocephalans recovered from the intestine of Channa punctatus were kept in refrigerator for eversion of proboscis, fixed in A.F.A. fixative (50% alcohol, formalin and acetic acid in ratio of 100: 6: 2.5) for 24 hours further preserved in 70% ethanol. Camera Lucida diagrams of acetoalum carmine stained permanent mounts were made for morphometric studies. Results: Two new species of genus Pallisentis were identified and named as P. channai n. sp. and P. vinodai n. sp., their taxonomical ...
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Comparative Parasitology
A new species of Asymphylodora (Trematoda: Lissorchiidae) is described from the intestine of a ba... more A new species of Asymphylodora (Trematoda: Lissorchiidae) is described from the intestine of a bata (Labeo bata) collected from the Sharda Canal in Biswan (Sitapur), state of Uttar Pradesh, India. This is the fifth species of Asymphylodora named in India and the largest specimens reported from India (other than Asymphylodora indica, Asymphylodora kedarai, Asymphylodora ritai, and Asymphylodora punctatusi). It is also the second largest known in the genus next to Asymphylodora atherinopsidis. Members of the new species are similar to A. kedarai and A. punctatusi in that they possess the genital pore and cirrus on the right side of body rather than left as in the other species in world. In the new species the prepharynx is well developed, the esophagus is longer, the ceca extend posterior to the end of the testis, the size of testis is much larger, the vitellaria extend to near the anterior end of the ovary, there are both a spiny cirrus and a metraterm, and the body is longer than in both A. kedarai and A. punctatusi. Moreover, specimens of new species possess an ovary overlapping the anterodorsal margin of the testis rather than a pretesticular ovary as in A. punctatusi, and the sucker width ratio differs (1:0.90 in the newly described species versus 1:0.84 in A. punctatusi). The newly described species can be distinguished from A. kedarai by the presence of an undivided unipartite seminal vesicle and in relation to sucker width ratio (1:1.55 in A. kedarai). This is the first report of a species in the genus Asymphylodora from L. bata. Diagnosis for the genus is amended.
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Comparative Parasitology
Surveys of freshwater fishes of India were carried out during the period 2011–2017. Members of th... more Surveys of freshwater fishes of India were carried out during the period 2011–2017. Members of the species of the genus Prosorhynchoides Dollfus, 1929 (Digenea: Bucephalidae) infect the intestine of freshwater and marine fishes. Prosorhynchoides fusiformis (Verma, 1936) Srivastava and Chauhan, 1973, Prosorhynchoides garuai (Verma, 1936) Srivastava and Chauhan, 1973, Prosorhynchoides karvei (Bhalerao, 1937) Srivastava and Chauhan, 1973, and Prosorhynchoides thapari (Dayal, 1948) Bott and Cribb, 2005, are redescribed from the intestine of some freshwater fishes of India. In this paper we also review the taxonomic status of Indian freshwater Prosorhynchoides spp. We transfer Prosorhynchoides macronius and Prosorhynchoides bagarius (previous name Neobucephalopsis bagarius) to P. fusiformis and accordingly revise the status of other Neobucephalopsis spp. We also transfer Prosorhynchoides sinhai, Prosorhynchoides eutropiichthis, and Prosorhynchoides mauryai (previous name Neobucephalopsis garuai) to P. garuai and consider Prosorhynchoides magnum (Verma, 1936) Srivastava and Chauhan, 1973, as a valid species. We transfer Prosorhynchoides pseudeutropei, Prosorhynchoides aspinosiensis, Prosorhynchoides mehrai, Prosorhynchoides confusus, and Prosorhynchoides minimus, including previous host records, to P. magnum, as these organisms are all similar in their position of organs and are similar in size. In revision, we transfer Prosorhynchoides belonea, Prosorhynchoides lateroporus, Prosorhynchoides gaurii, Prosorhynchoides chauhani, Prosorhynchoides canciliansis, and Neobucephalopsis (Prosorhynchoides) jhansiansis to P. karvei. We consider P. thapari as a valid species and transfer Prosorhynchoides gauhatiensis to P. thapari. A Y-shaped excretory vesicle is absent in adults of Prosorhynchoides spp. reported from India. The Gomti River, India, is a new locality record for both P. fusiformis and P. garuai. Freshwater Batchwa vacha (Eutropiichthys vacha) is a new host record for P. karvei and P. thapari. A key to distinguish adults of nominal Indian freshwater Prosorhynchoides spp. is included.
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Comparative Parasitology
Surveys of freshwater fishes of India were carried out during the period 2011–2017. Members of th... more Surveys of freshwater fishes of India were carried out during the period 2011–2017. Members of the species of the genus Prosorhynchoides Dollfus, 1929 (Digenea: Bucephalidae) infect the intestine of freshwater and marine fishes. Prosorhynchoides fusiformis (Verma, 1936) Srivastava and Chauhan, 1973, Prosorhynchoides garuai (Verma, 1936) Srivastava and Chauhan, 1973, Prosorhynchoides karvei (Bhalerao, 1937) Srivastava and Chauhan, 1973, and Prosorhynchoides thapari (Dayal, 1948) Bott and Cribb, 2005, are redescribed from the intestine of some freshwater fishes of India. In this paper we also review the taxonomic status of Indian freshwater Prosorhynchoides spp. We transfer Prosorhynchoides macronius and Prosorhynchoides bagarius (previous name Neobucephalopsis bagarius) to P. fusiformis and accordingly revise the status of other Neobucephalopsis spp. We also transfer Prosorhynchoides sinhai, Prosorhynchoides eutropiichthis, and Prosorhynchoides mauryai (previous name Neobucephalopsis garuai) to P. garuai and consider Prosorhynchoides magnum (Verma, 1936) Srivastava and Chauhan, 1973, as a valid species. We transfer Prosorhynchoides pseudeutropei, Prosorhynchoides aspinosiensis, Prosorhynchoides mehrai, Prosorhynchoides confusus, and Prosorhynchoides minimus, including previous host records, to P. magnum, as these organisms are all similar in their position of organs and are similar in size. In revision, we transfer Prosorhynchoides belonea, Prosorhynchoides lateroporus, Prosorhynchoides gaurii, Prosorhynchoides chauhani, Prosorhynchoides canciliansis, and Neobucephalopsis (Prosorhynchoides) jhansiansis to P. karvei. We consider P. thapari as a valid species and transfer Prosorhynchoides gauhatiensis to P. thapari. A Y-shaped excretory vesicle is absent in adults of Prosorhynchoides spp. reported from India. The Gomti River, India, is a new locality record for both P. fusiformis and P. garuai. Freshwater Batchwa vacha (Eutropiichthys vacha) is a new host record for P. karvei and P. thapari. A key to distinguish adults of nominal Indian freshwater Prosorhynchoides spp. is included.
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Trends in Biosciences, 2017
Pallisentis (Quadrigyridae, Van Cleave, 1920) are endoparasites of vertebrates and arthropods. In... more Pallisentis (Quadrigyridae, Van Cleave, 1920) are endoparasites of vertebrates and arthropods. In the present study a new species Pallisentis anandai n. sp. was recorded first time by morphological and molecular phylogenetic method from the intestine of Channa punctatus. The species were found morphologically distinct; proboscis armed with 4 circles of 10 hooks each. Lemniscus of left side and right side was almost equal in size and shape. Collar spines were 15 transvers circles each with 20 spines. Neck was small. There were 29 circles of spines in trunk, each with 12 spines. Cement gland was single, syncytial and cylindrical mass with 24 nuclei. Saefftigen’s pouch elongated sac like. Morphological distinction also supported by genetical evidences. Obtained sequences of 18s rRNA region were analyzed by using Maximum Likelihood (ML), Neighbour-joining (NJ) and UPGMA method. The tree length was found 215. The consistency index (0.698113), the retention index (0.529412), and the composite index was 0.490014 (0.369589) for all sites and parsimony-informative sites.
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Papers by ramakant maurya