MELANOIDES KAINARENSIS — NEW INTERMEDIATE HOST OF TREMATODES PHILOPHTHALMUS LUCIPETUS (TREMATODA, PHILOPHTHALMIDAE)
Abstract and keywords
Abstract (English):
Objective of research: to study the infection level of molluscs Melanoides kainarensis Starobogatov et Izzatullaev, 1980 with cercariae of trematode Philophthalmus lucipetus (Rudolphi, 1819) under conditions of Uzbekistan. Materials and methods: Cercariae and parthenitae of Ph. lucipetus of molluscs M. kainarensis from the warm spring Boshkhovuz of Samarkand region, Uzbekistan were investigated. Morphological and biological studies were carried out by well-known standard parasitological methods.Results and discussion: The research revealed that 2801 specimens of M. kainarensis were infected with cercariae and parthenitae of Philophthalmus Looss, 1899, which were identified as Ph. lucipetus. The collected cercariae and adolescariae were used for the experimental infestation with Anser anser dom., Anas platyrhynchos dom. and Gallus gallus dom. Adult parasites isolated from conjunctival sacs of infected birds were identified as Philophthalmus lucipetus. That was the first evidence for the role of M. kainarensis as the intermediate host for these trematodes.

Keywords:
Melanoides kainarensis, Philophthalmus lucipetus, parthenitae, cercariae, adolescariae, trematode, birds, mollusks.
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Введение

Диапазон географического распространения Philophthalmus lucipetus (Rudolphi, 1819) достаточно широк. Популяции этой трематоды зарегистрированы во многих странах Европы, Азии, Африки и Америки у различных экологических групп птиц. Взрослые трематоды паразитируют в конъюнктивальном мешке и вызывают серьезное заболевание у сельскохозяйственных и охотничье-промысловых птиц. В странах СНГ данный вид зарегистрирован у Anser anser на территории Украины (Смогоржевская, 1976). Популяции Ph. lucipetus отмечены во многих странах у гусей, уток, кур, павлинов, индюков, страусов и нанду (Greve and Harrison, 1980; Mukaratirwaetal., 2005; Pinto, 2009). В качестве промежуточных хозяев этой трематоды указанными авторами были установлены моллюски Melanoidestuberсulatus,Fagotiaacicularis, Amphimelaniaholandri, Melanopsispraemorsa, Pleurocercaacutaи Tarebiagranifera (Alicata, 1962; Literaketal., 2013).

Взрослые формы Ph. lucipetus у птиц в естественных условиях Узбекистана пока не отмечены. Однако, нахождение церкарий у M. kainarensis, как нового промежуточного хозяина в Узбекистане и формирование очага инвазии только на одной территории настоятельно потребовали проведения настоящих исследований.

 

Целью данной работы является установление естественной инвазированности популяции M. kainarensis церкариями Ph. lucipetus в Узбекистане и воспроизведение жизненного цикла этой трематоды в условиях эксперимента.

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