Друковані видання. Кафедра терапії імені професора П. І. Локеса

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https://dspace.pdau.edu.ua/handle/123456789/5088

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Перегляд Друковані видання. Кафедра терапії імені професора П. І. Локеса за Автор "Nagorna, L. V."

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  • Ескіз
    Документ
    Influence of Tempetature on Viability and Deveplopment of Heterakis gallinarum (Nematoda, Heterakidae) Eggs. Zoodiversity
    (2024) Yevstafieva, V. O.; Євстаф’єва, Валентина Олександрівна; Омельченко, Ольга Вікторівна; Omelchenko O. V.; Мельничук, Віталій Васильович; Melnychuk, V. V.; Нагорна, Людмила Володимирівна; Nagorna, L. V.; Петренко, Максим Олександрович; Petrenko, M. O.; Шаферівський, Богдан Сергійович; Shaferivskyi, B. S.; Кравченко, Сергій Олександрович; Kravchenko, S. O.; Супруненко, Костянтин Володимирович; Suprunenko, K. V.; Шейко, Сергій Володимирович; Sheiko, S. V.; Каришева, Людмила Павлівна; Karysheva, L. P.; Бурда, Тетяна Леонідівна;; Burda, T. L.; Сизоненко, Наталія Миколаївна; Syzonenko, N. M.; Савенкова, Олена Олександрівна; Savenkova, O. O.; Люлька, Вікторія Миколаївна; Liulka, V. M.
    Pinworms of the genus Heterakis Dujardin, 1845 parasitize a wide range of hosts, including a number of species of domestic and wild birds. Th ese nematodes are ecologically adapted to the climatic conditions of many geographical zones, which contributes to their widespread distribution. Th e aim of the work was to investigate the infl uence of diff erent temperature regimes at laboratory conditions on the growth, development and viability of eggs isolated from the gonads of female nematodes Heterakis gallinarum Schrank, 1788. Th e conducted studies established that, depending on the cultivation temperature, nematode eggs developed from 6 to 56 days, and their survival rate was from 67.7 to 83.7 %. Th e temperature of 25 °С was the most favourable for the development of H. gallinarum eggs, the development lasted 12 days and the highest number of eggs with motile infective larvae was formed (83.7 %). It was found that the period of egg development in cultures gradually decreased with increasing temperature: it was 56 days at 15 °C, 18 days at 20 °C, 12 days at 25 °C and 6 days at 30 °C. Th e survival rate of H. gallinarum eggs gradually increased with increasing temperature in regimes of 15 °С, 20 °С and 25 °С to 67.7 %, 80.7 % and 83.7 %, respectively. At a temperature of 30 °C, egg survival decreased slightly to 78.7 %. It was found that the development of H. gallinarum eggs from the zygote stage to the formation of motile infective larvae, depending on the temperature regime of cultivation, is accompanied by a decrease in egg length by 4.9–5.4 %, an increase in egg width by 4.1–7.6 % and a thinning of the shell by 9.5–28.6 %. Under diff erent temperature regimes, the morphometric parameters of eggs during their development diff er in terms of their length, width and shell thickness
  • Ескіз недоступний
    Публікація
    Special aspects of exogenic development of Nematodirus spathiger (Nematoda, Molineidae) at daily tempreture ranges
    (2026) Yevstafieva, V. O.; Євстаф’єва, Валентина Олександрівна; Ponomarenko, V. M.; Пономаренко, В. М.; Melnychuk, V. V.; Мельничук, Віталій Васильович; Nagorna, L. V.; Petrenko, M. O.; Петренко, Максим Олександрович; Kravchenko, S. O.; Кравченко, Сергій Олександрович; Pyshchalenko, M.; Korchan, L. M.; Корчан, Леонід Миколайович; Titarenko, O. V.; Тітаренко, Олена Вікторівна; Kharchenko, V.;
    Ecological peculiarities in development of exogenous stages of Nematodirus nematodes include some important aspects of their survival and distribution at different abiotic factors. The aim of this work was laboratory study of some biological peculiarities of Nematodirus spathiger exogenous stages (Railliet, 1896) taken from cattle and grown at different temperatures (+20°C, 23°C, 26°C, 29°C and 32°C). The temperature was found significantly affects the period of exogenous development of N. spathiger eggs, both until L3 and on individual stages. Temperature also effects nematodes survival both eggs and hatched L3. At 32°C, the survival rates of eggs and hatched L3 were the highest, with the shortest period of development. At this temperature, L3 hatching was completed by day 10, and their survival was 94.3%. As temperature decreased, the time of L3 exogenous development prolonged, and survival rates were less: at 29°C – 12 days and 91.9%, at 26°C – 18 days and 86.7%, at 23°C – 22 days and 80.0%, at 20°C – 30 days and 56.7%, respectively. During the development of N. spathiger eggs, their length and shell thickness decreased by 10.6 and 22.6%, respectively, and their width increased by 10.5%. In addition, changes in morphometric parameters during L3 maturation were observed, length and percent of filament to STE increased by 7.1 and 7.8%, and body width with and without sheath, and STE length decreased by 40.4%, 37.9%, and 8.8%, respectively