Abstract
AbstractPhyllodistomum is the large digenean group of fish parasites, with 25 species described so far in the Indian subcontinent. Here, we redescribed two adult species of Phyllodistomum (P. srivastava Rai 1964 and P. parorchium Jaiswal 1957) collected from freshwater fish Heteropneustes fossilis Bloch, 1974 and Glossogobius giuris Ham, 1822, respectively, and an unknown Phyllodistomum metacercaria from shrimp (Macrobrachium dayanum Henderson, 1893). These parasites were genetically characterized using 28S and first and second internal transcribed spacers (ITS1 and ITS2) regions of the nuclear ribosomal DNA and CoxI region of the mitochondrial (mt) DNA to establish the link between metacercaria and adult. Morphologically, both the unknown metacercaria in shrimp and adult Phyllodistomum srivastava in fish, resembled in terms of crenulated margin of hind body, arrangement of diagonal testes, bipartite seminal vesicle, and compact paired vitelline masses. The two adult parasite species, P. srivastava from P. parorchium, were different in terms of shape and size of the body, ratio of suckers, the absence of crenulated margin of hind body, a single chambered seminal vesicle, and deeply lobed paired vitelline masses, in the former species. Comparison of the 28S, ITS, and mtCoxI sequence data suggested P. srivastava and Phyllodistomum metacercaria belong to the same species, and supported the distinction between P. srivastava and P. parorchium. Exploring the potential impact of Phyllodistomum infection on host behaviour and health would be prospective areas for future research.
Publisher
Springer Science and Business Media LLC
Subject
Infectious Diseases,Insect Science,General Veterinary,General Medicine,Parasitology
Reference63 articles.
1. Ahmad R, Singh V, Maurya AK (1999) On a new species of the genus Phyllodistomum Braun 1899 from the stomach of a fresh water fish Ompok bimaculatus (Bloch) at Varanasi. Adv Biosci 18:45–52
2. Aghlmandi F, Habibi F, Afraii MA, Abdoli A, Shamsi S (2018) Infection with metacercaria of Clinostomum complanatum (Trematoda: Clinostomidae) in freshwater fishes from Southern Caspian Sea Basin. Revue de Médecine Vétérinaire 7:147–151
3. Agrawal V (1966) Studies on some trematode parasites of fresh water fishes from Lucknow. Annales de Parasitologie Humaine et Comparee 41(3):217–231
4. Barton DP, Zhu X, Nuhoglu A, Pearce L, McLellan M, Shamsi S (2022) Parasites of selected freshwater snails in the Eastern Murray Darling Basin, Australia. Int J Environ Res Public Health 19(12):7236
5. Bhadauria S, Dandotia MR (1988) Studies on the digenetic trematodes of freshwater fishes with special reference to Gwalior region. Part IV. Description of ten new and six already known forms belonging to eight genera of trematodes. Rivista di Parassitologia 47(3):353–397