Crustaceans (Crustacea) in bodies of water in Uzbekistan as intermediate hosts of helminths of animals

The article provides information on the participation of crustaceans (Crustacea) in the life cycles of helminths of domestic and wild (game and commercial) animals in Uzbekistan. To date, 730 species of parasitic worms have been registered, 114 of which parasitise fish, 376 – birds, and 240 – mammals. The most common of them represent the class Cestoda: Bothriocephalus opsariichth y dis , Schistocephalus pungitii , Ligula intestinalis , L. colymbi , Digramma interrupta , Gryporhynchus pusillus , Dicranotaenia coronula , Diorchis brevis , Diorchis ransomi , Diploposthe laevis , Drepanidotaenia lanceolata , Fimbraria fasciolaris , Microsomacanthus microsoma , M. compressa , Myxolepis collaris , Sobolevicanthus gracillus , and Diphyliobothrium ditremum . The most epizo o tologically significant representatives of Nematoda included Raphidascaris acus , Contracaecum microcephalum , Camallanus lacustris , Ph i lometra ovata , Ph i lometra rischta , Phylometroides sanguine us , Dracunculus medine n sis , Avioserpens mosgovoyi , Ascaridia galli , Heterakis gallinarum , Tetrameres fissispina , Streptocara crassica u da , Echinuria uncinate , and Gnathostoma hispidum . Parasitological studies of the Cyclops community (more than 30 species) in various bodies of water in Central , North - Eastern , and North - Western Uzbekistan show infe c tion of 11 species of Cyclopidae with larval stages of cestodes and nematodes. Naturally, infected Cyclops widely inhabit diverse bodies of water and include the following species: Macrocyclops albidus , M. fuscus , Eucyclops macrurus , E. serrulatus , Cyclops strenuus , Cyclops vicinus , C. heberti , Acanthocyclops trajani , Thermocyclops crassus and Mesocyclops leuckarti . All of them are intermediate hosts to the helminths. The total prevalence of the larval stages of cestodes and nematodes in the studied Cyclops was 6.9%, with Cestoda larvae accounting for 5.7% and Nematoda – 1.2%. All cestode larvae found in Cyclops are of two types – procercoids and cysticerc o ids. The nematode larvae found in 7 crustacean species turned out to be representatives of the following families: Anisakidae, Camallanidae, Ph i lometridae, Dracunculidae and Gnathostomatidae. We identified a total of 20 species of helminth larvae, whose mature forms parasitise fish, birds and mammals. Crustaceans play a signif i cant role in the life cycles and circulation of pathogens and groups of parasites in bodies of water in Uzbekistan.

Ҳали таржима қилинмаган