The trematode cercariae fauna in Central Uzbekistan
Abstract
The results of the research show that molluscs in the water bodies of Central Uzbekistan were infected with trematode cercariae. The infection of Lymnaeidae, Planorbidae, Physidae and Thiaridae molluscs with trematode cercariae was studied, and larvae of 32 species were identified. The trematode cercariae fauna in Central Uzbekistan has been enriched with a number of new species: Fasciola gigantica , Diplostomum helveticum , Calicophoron calicophorum , Liorchis scotiae , Gastrothylax crumenifer , Notocotylus ephemera , Skrjabinoeces similis , Strigea falconis , Philophthalmus lucipetus , De n dritobilharzia loossi , Gigantobilharzia acotylea , Gigantobilharzia sp. The composition of these cercariae is distinguished by its diversity in the molluscs Lymnaea auricularia (14 species) and Planorbis planorbis (15 species). In general, it was found that the fauna of the detected cercariae belonged to 15 families of trematodes. 2 cercariae species were recorded in each of the molluscs Physa fontinalis and Melanoides kainarensis . It was shown that adult forms of the detected trematode cercariae occur in fish, birds and mammals. The importance of molluscs in the formation of the cercariae fauna was highlighted. During the research period, monitoring was carried out in the water bodies of the indicated regions. As an example, stationary studies were conducted on the molluscs L. auricularia and P. planorbis in the Tudakul Reservoir . During the study period in the upper part of the reservoir, the incidence of accidental infection with trematode parthenites and cercariae in L. auricularia mollusca was 22.0 – 32.6%, in the middle part, the infection rate was 7.6%, and in the lower part, this rate was 11.2 – 25.7%. A similar situation can be observed with the infe c tion of another mollusca species P. planorbis , the difference from L. auricularia mollusca is that the infection rate is significantly lower. At the same time, the main factors influencing the formation of the cercariae fauna in the study area are presented.References
Beran, L. (1998). Vodní Měkkýši ČR. Metodika Českého svazu ochránců přírody [Aquatic molluscs of the Czech Republic. Methodology of the Czech Union of Nature Conservation]. Vlašim (in Czech).
Chernogorenko, M. I. (1983). Lichinki trematod v molliuskakh Dnepra i yego vodokhranilishch [Larvae of trematodes in the molluscs of the Dnieper and its bodies of water]. Naukova Dumka, Kiev (in Russian).
Esch, G. W., Barger, M. A., & Fellis, K. J. (2002). The transmission of digenetic trematodes: Style, elegance, complexity. Integrative and Comparative Biology, 42(2), 304–312.
Fried, B., & Toledo, R. (2004). Criteria for species determination in the ‘revolutum’ group of Echinostoma. Journal of Parasitology, 90(4), 917–917.
Galaktionov, K. V., & Dobrovolskiy, A. A. (1998). Proiskhozhdeniye i evoliutsiya zhiznennykh tsiklov trematod [Origin and evolution of life cycles of trematodes]. Nauka, Saint Petersburg (in Russian).
Ginetsinskaya, T. A. (1968). Trematody, ikh zhiznennyye tsikly, biologiya i evolyutsiya [Trematodes, their life cycles, biology and evolution]. Nauka, Leningrad (in Russian).
Ginetsinskaya, T. A., & Dobrovolskiy, A. A. (1983). Zhiznennyy tsikl trematod kak sistema adaptatsiy [Life cycle of trematodes as a system of adaptations]. Proceedings of the Biological Research Institute of Leningrad State University, 34, 112–157 (in Russian).
Glőer, P., & Meier-Brook, C. (2003). Süsswassermollusc en: Ein Bestimmungsschlüssel für die Bundesrepublik Deutschland [Freshwater molluscs: A key to identification for the Federal Republic of Germany]. Deutscher Jugendbund für Naturbeobachtung, Deutschland (in German).
Jackiewicz, M. (2000). Błotniarki Europy (Gastropoda, Pulmonata, Lymnaeidae) [European marsh moths (Gastropoda, Pulmonata, Lymnaeidae)]. Wydawnictwo Kontekst, Poznań (in Polish).
Jadin, V. I. (1952). Molliuski presnykh i solonovatykh vod SSSR. Opredeliteli po faune SSSR [Molluscs of fresh and brackish waters of the USSR. Identification guides to the fauna of the USSR]. Academy of Sciences of the USSR, Moscow (in Russian).
Kanev, I., Nollen, P. M., Vassilev, I., Radev, V., & Dimitrov, V. (1993). Redescription of Philophthalmus lucipetus (Rudolphi, 1819) (Trematoda: Philophthalmidae) with a discussion of its identity and characteristics. Annalen des Naturhistorisches Museum Wien, 94/95B, 11–34.
Khalil, L. F. (2002). Family Schistosomatidae Stiles & Hassall, 1898. In: Gibson, D. I., Jones, A., & Bray, R. A. (Eds.). Keys to the Trematoda. CABI. Vol. 1. Pp. 419–432.
Korobov, O. I. (2005). Fauna i ekologo-biologicheskie osobennosti lichinok trematod molliuskov roda Lymnaea vodoyemov Omskoy oblasti [Fauna and ecological-biological features of larvae of trematodes of molluscs of the genus Lymnaea of reservoirs of the Omsk region]. Vitebsk State Medical University, Vitebsk (in Russian).
Kruglov, N. D., (2005). Mollyuski semeystva prudovikov (Lymnaeidae, Gastropoda, Pulmonata) Evropy i Severnoy Azii [Molluscs of the family (Lymnaeidae, Gastropoda, Pulmonata) of Europe and North Asia]. Smolensk State Pedagogical University, Smolensk (in Russian).
Lajtner, J., Lucić, A., Marušić, M., & Erben, R. (2008). The effects of the trematode Bucephalus polymorphus on the reproductive cycle of the zebra mussel Dreissena polymorpha in the Drava River. Acta Parasitologica, 53(1), 85–92.
Littlewood, D. T. J., & Bray, R. A. (Eds.). (2014). Interrelationships of the Platyhelminthes. CRC Press, London.
Lühe, M. (1909). Parasitische Plattwurmer. I. Trematods [Parasitic flatworms. I. Trematodes]. Brauer, A. (Ed.). Die Süsswaserfauna Deutschlands. Verlag von Gustav Fischer, Jena, Heft (in German).
Marszewska, A., & Cichy, A. (2015). Unionid clams and the zebra mussels on their shells (Bivalvia: Unionidae, Dreissenidae) as hosts for trematodes in lakes of the Polish Lowland. Folia Malacologica, 23(2), 149–154.
Martin, W. E. (1952). Another annelid first intermediate host of a digenetic trematode. The Journal of Parasitology, 38(4), 356–359.
Nasimov, K. (1967). Lichinki trematod presnovodnykh molliuskov Samarkandskoy i Bukharskoy oblastey UzSSR [Trematode larvae of freshwater molluscs of Samarkand and Bukhara regions of the Uzbek SSR]. Samarkand State University, Samarkand (in Russian).
Nasimov, K. N. (1964). K izucheniyu lichinok trematod v presnovodnykh molliuskakh Samarkandskoy oblasti [On the study of trematode larvae in freshwater molluscs of Samarkand region]. Works of Samarkand University, 151, 62–64 (in Russian).
Oglesby, L. C. (1961). A new cercaria from an annelid. The Journal of Parasitology, 47(2), 233–236.
Pinto, H. A., & de Melo, A. L. (2010). Melanoides tuberculata as intermediate host of Philophthalmus gralli in Brazil. Revista do Instituto de Medicina Tropical de São Paulo, 52(6), 323–327.
Pozdnyakov, S. E., & Gibson, D. I. (2008). Family Didymozoidae Monticelli, 1888. In: Bray, R. A., Gibson, D. I., & Jones, A. (Eds.). Keys to the Trematoda. CABI. Volume 3. Pp. 631–734.
Prokofyev, V. V. (2006). Strategiya zarazheniya zhivotnykh – khozyayev tserkariyami trematod: Opyt analiza v ekosistemakh pribrezh'ya morey i ozer severo-zapada Rossii [Strategy of infection of host animals with trematode cercariae: Experience of analysis in coastal ecosystems of seas and lakes of Northwestern Russia]. Zoological Institute of the Russian Academy of Sciences, Saint Petersburg (in Russian).
Shakarbaev, U. A., Akramova, F. D., Esonboyev, J. R., & Shodieva, F. O. (2020). Trematode fauna of molluscs of the Kattakurgan Reservoir of the Samarkand Region. Theory and Practice of Parasitic Disease Control, 21, 502–508.
Taskinen, J., Valtonen, E. T., & Mäkelä, T. (1994). Quantity of sporocysts and seasonality of two Rhipidocotyle species (Digenea: Bucephalidae) in Anodonta piscinalis (Mollusca: Bivalvia). International Journal for Parasitology, 24(6), 877–886.
Zdun, В. I. (1961). Lychynky trematod u prisnovodnykh moliuskakh Ukrayiny [Trematode larvae in freshwater molluscs of Ukraine]. Publishing House of the Academy of Sciences of the Ukrainian SSR, Kyiv (in Ukrainian).
