Epizootic and epidemic risks of the trematode metagonimus yokogawai katsurada, 1912 in Dagestan, as a biological threat to aquaculture of natural reservoirs and the population in the basin river Terek

DOI 10.33861/2071-8020-2021-6-45-48

Engashev S.V., Shakhmurzov M.M., Bittirov A.M., Alieva K.G., Kaloshkina I.M., Medvedeva A.M.

Summary. The highest values of the extent of invasion of the thickness of scales and fins by cysts with metacercariae of Metagonimus yokogawai trematode were found within a high level of registration (48.50-60.00%) and the epidemiologically dangerous degree of the abundance index from 18.62 to 31.80 ind./individual in populations of such fish as Terek barbel, goldfish, roach and Terek gudgeon. Also, the extensiveness of invasion of cysts with Metagonimus yokogawai metacercariae in the thickness of scales and fins was within the limits of a high level of occurrence (37.00-45.00%) and a high abundance index (10.66-17.94 sp./sp.) of trematode metacercariae in populations of commercial fish (carp, Ciscaucasian spined carp, mirror carp), which requires constant monitoring of the spread of parasitic zoonotic disease, which is dangerous for the population of the North Caucasus region. No cases of registration of metagonimosis in Dagestan have been identified in humans. The distribution pattern of cysts with metacercariae of the trematode Metagonimus yokogawai in the scales, gills and fins of 14 species of commercial and weed fish in the rivers of the Terek basin on the territory of Dagestan allows authors to consider the invasion of metagonimosis as an increasing epizootic and epidemic risk in Dagestan and as a biological threat to aquaculture for humans. The authors believe that the invasion of metagonimosis of fish, carnivores and humans throughout the basin of the river Terek requires quarterly program monitoring.

Keywords: Republic of Dagestan, Terek river basin, fish, scales, fins, cyst, metacercariae, trematode, Metagonimus yokogawai, localization, abundance index, extensiveness and intensity of invasion.

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Author affiliation:

Engashev Sergey V., Academician of the Russian Academy of Sciences, D.Sc. in Veterinary Medicine, professor, professor of the department of Parasitology and Veterinary-Sanitary expertise of the Moscow State Academy of Veterinary Medicine and Biotechnology named after K.I. Skryabin; 23, Ak. Skryabina st., Moscow, 109472.

Shakhmurzov Mukhamed M., D.Sc. in Biology, professor, Councilor of the Administration, Head of the Department of Animal Breeding and veterinary-sanitary expertise of the the Kabardino-Balkaria State Agrarian University named after V.M. Kokov; 1, Lenina st., Nalchik, Republic of Kabardino-Balkaria, 360030; phone: 8-8662-407307; e-mail: shahmih@mail.ru.

Alieva Kamilla G., Ph.D. in Biology, Senior Lecturer of the Department of Biology and Medical Ecology of the Dagestan State Medical University; 1, Lenina sq., Makhachkala, Republic of Dagestan, 367000; phone: 8-8722-674903; e-mail: akamilla05@mail.ru.

Kaloshkina Inna M., Ph.D. in Veterinary Medicine, head of the department of antiparasitic, veterinary and sanitary measures of the Krasnodar regional station of fighting against animal diseases; 15/1, Kalinina st., Krasnodar, 350004; phone: 8-918-4656939; e-mail: beretarinna@gmail.com.

Medvedeva Anna M., post-graduate student of the Kuban State Agrarian University; 13, Kalinina st., Krasnodar, 350044; phone: 8-918-0155290; e-mail: medvedeva778@mail.ru.

Responsible for correspondence with the editorial board: Bittirov Anatoly M., D.Sc. in Biology, Professor of the Department of Veterinary Medicine of the Kabardino-Balkaria State Agrarian University named after V.M. Kokov; 1, Lenina st., Nalchik, Republic of Kabardino-Balkaria, 360030; phone: 8-8662-471772; e-mail: bam_58a@mail.ru.


 

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