Vol. 5, Issue 3 (2020)
A. Morphotaxonomic study of piscian cestodes of the Genus Lytocestus (Caryophyllidea- Lytocestidae) from freshwater fishes of Lucknow District (Uttar Pradesh), India
Author(s): Amar Jeet Singh, Aditya Narayan, Sarvjeet Singh
Abstract: The present morphotaxonomical study has comprised of the regional survey for piscian cestode parasites from freshwater fishes of Gomti river, Lucknow District (U.P.) India. This expedition was conducted from September 2019 to March 2020 in the spring winter season from which one Caryophyllidean species of the genus Lytocestus from host fish Heteropneustes fossilis (Bloch) is described here. In this study, all retrieved specimens and holotype models of parasites have been studied to specify the cladistic taxonomic description and morphological characterization of the rare piscian cestode (tapeworm) species. During the field survey, mature freshwater fishes were collected from the local fish market and sometimes angled and caught by traps on the spot at selected water bodies of sampling sites with the help of local fishermen. The collected fishes as holotype specimens were taken to the laboratory so that they could be properly studied based on their morphological characteristics. Parasites obtained from infected host fishes were maintained in 5% formalin filled labeled vials with the necessary information for further investigation. A total of six cestode parasites were found from the infected intestine and body cavity of the host fishes. Morphotaxonomic studies of tapeworms show that Parasitic diversity can be seen at a certain period in the Gomti River of Lucknow region.Morphotaxonomic differential characterization of finding species has reported as body elongated, scolex differentiated, ovary bilobed and H-shaped, large saccular uterus, testes numerous and well developed, vitelline follicle are cortical and annular surrounding testes, eggs are ovoid and non-filamentous. This study provides an approach to understand the diversity of tapeworm parasites of some freshwater fish species found in the Gomti river based on morphotaxonomy.