Morphological and Biological Characteristics of Amidostomum Anseris (Nematoda, Amidostomatidae) from Anser anser domesticus

Євстаф’єва, В. О.; Stybel, V. V.; Мельничук, В. В.; Prijma, О. В.; Yatsenko, І. V.; Антіпов, Анатолій Анатолійович; Bakhur, Tetiana; Goncharenko, V. P.; Pidborska, R. V.; Shahanenko, R.; Джміль, Володимир Іванович

doi:10.2478/vzoo-2019-0007

Cited by 6 publications

(6 citation statements)

References 11 publications

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“…Other taxonomic features proposed to be used in the identification of Trichostrongyloidea are the specifics of the morphological structure and location of the lateral cuticular crests (wings, outgrowths) on the body of the parasite. Based on these features, keys have been proposed that increase the efficiency of differentiation of this group of nematodes (Lee, 1965;Hoberg & Lichtenfels, 1994;Lichtenfels et al, 1996;Yevstafieva et al, 2019). Studies have shown that the lateral cuticular crests on the entire body in T. tenuis females have different sizes in terms of height, width, and location relative to each other.…”

Section: Discussionmentioning

confidence: 99%

Differential species traits of Trichostrongylus tenuis (Nematoda, Trichostrongylidae)

Євстаф’єва

Starodub

Pisarenko

et al. 2020

Regul. Mech. Biosyst.

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Trichostrongylus tenuis Mehlin, 1846 is a helminth species that parasitizes in the gastrointestinal tract of birds and causes trichostrongylosis. Research on the differential features of the pathogen at various stages of development facilitates timely finding of the foci of infection and providing recommendations for prevention and control. In the present study, the differential species traits of male and female Trichostrongylus nematodes parasitizing in the domestic goose were examined. The nematodes were obtained in helminthological dissection of the intestine of birds kept at farms and private households in Poltava region, Ukraine. It was revealed that the morphological features of T. tenuis females that should be considered in species identification include the structural specifics of the reproductive system and the tail end. 22 metric parameters were suggested for species identification, including the female body measurements for different parts, specifics of vulva and anus location, sizes of the ovijector, sphincter, ejector and vulval area. Differences were found in the metric parameters of the lateral crests of the cuticle in female nematodes in relation to the position of crests on the parasite’s bodies. The cuticular crests were absent at 0.1 mm from the head and tail ends, and the length of crests was 9.3 mm in total. The longest and widest crests were observed in the middle of the body, the shortest were found in the anus area, and the narrowest crests were from the anterior part of esophagus to its middle. The distance between crests varied 0.2–3.0 μm, the longest at the transition of esophagus into the intestine and the shortest in area between the vulva and the anus. The metric parameters of T. tenuis eggs obtained from bird feces and in the nematode uterus differed significantly by 5 characters. The collected data on the morphological and metric parameters of females and eggs of T. tenuis can be used in species identification and understanding of the taxonomic position of that species.

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Section: Discussionmentioning

confidence: 99%

Differential species traits of Trichostrongylus tenuis (Nematoda, Trichostrongylidae)

Євстаф’єва

Starodub

Pisarenko

et al. 2020

Regul. Mech. Biosyst.

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“…Собаки з фекаліями виділяють у навколишнє середовища яйця паразита, де і відбувається їхній ембріональний розвиток та дозрівання до інвазійної стадії. Останні здатні вже заражати дефінітивного хазяїна (Kirkova & Dinev, 2005;Yevstafieva et al, 2019). Автори зазначають, що яйця трихурисів є досить стійкими до умов зовнішнього середовища та здатні достатньо тривалий час зберігати свою інвазійність (Thapar & Singh, 1954;Mamedova & Fataliev, 2009).…”

Section: вступunclassified

Viability of exogenous stages of development of the causative agent of trichu-riasis of dogs under the influence of temperature

Євстаф’єва

Долгін

2022

SMLNUVMB

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Urbanization processes to one degree or another occur in all regions of the planet. Large, small cities and megacities are created, leading to an urban ecosystem with unique abiotic and biotic factors. All this significantly affects the fauna, stability and viability of parasites of domestic dogs, which are representatives of the urban environment. The work aimed to establish the degree of viability of exogenous stages of development of Trichuris vulpis, parasitizing dogs, under the influence of different temperatures. It was established that in laboratory conditions, depending on temperature fluctuations (23 °C–29 °C), the development period of trichurises eggs to the invasive stage ranged from 15 to 27 days. At a 23 °C for 27 days, 74.0 % of invasive T. vulpis eggs were formed. At this temperature, 26.0 % of eggs died during their embryogenesis. At a temperature of 25 °C, the process of egg development to the invasive stage lasted 24 days, where 77.7 % of viable eggs were formed. At this temperature, 22.3 % of trichurises eggs died. As the temperature rises, the egg development period gradually shortens and is 18 days at a temperature of 27 °C, and 15 days at a temperature of 29°C. At the same time, the number of formation of viable invasive eggs decreased and amounted to 81.0 and 64.3 %, respectively, and the percentage of egg death increased to 19.0 and 35.7 %. The terms of formation of various stages of egg development in embryogenesis depended on the temperature, where as its indicators increased, the terms of these stages also shortened. The term of the zygote stage was shortened from 9 to 6 days, the stage of blastomere splitting – from 12 to 6 days, the leguminous embryo stage – from 15 to 6 days, the tadpole embryo stage – from 21 to 9 days, the larval stage – from 24 to 12 days, formation of a mobile larva – from 27 to 15 days. The conducted experimental studies expand the already existing data on the stability of the eggs of trichurises, which parasitize dogs, concerning the influence of temperature in the environment, and also make it possible to correctly establish the terms of preventive measures and prevent the infection of animals through environmental objects.

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“…У курей діагностовано гетеракоз, аскаридіоз, капіляріоз та трихостронгільоз, у гусей -гетеракоз, амідостомоз, капіля-ріоз та трихостронгільоз. Про значне розповсюдження цих збудників на території господарств різної форми власності Полтавської області свідчать результати наукових досліджень авторів (Yevstafieva et al, 2018;Yevstafieva et al, 2019). Так, у птахогосподарствах із підлоговою системою утримання курей середня екстенсивність капіляріозної інвазії становила 30,78 % за інтенсивності інвазії -23,57 ± 0,42 яєць у 1 г посліду (Yevstafieva  Natjaglaja, 2016).…”

Section: результати та їх обговоренняunclassified

Distribution of nematodoses of poultry in farms of Poltava region

Korchan

Zamazіy

2021

SMLNUVMB

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The task of meeting the needs of the population with high-quality poultry products is to create a stable veterinary welfare in farms of various forms of ownership by in-depth study of the epizootic situation of nematodoses, which are registered in poultry. This will effectively develop and implement a system of treatment and prevention measures and reduce the incidence and death of poultry, especially from mixed helminthiasis. The aim of the work was to study the species composition, distribution and features of the course of nematodoses of the digestive tract in poultry in the farms of Poltava region. A total of 241 coprooscopic studies of chickens and 186 – geese were performed. Parasitological studies have shown that nematodoses of the digestive tract among domestic geese and chickens in farms of Poltava region are very common invasive diseases, where the extensiveness of invasion ranges from 16.59 to 74.69 %. In the studied chickens, pathogens of heterakosis (EI – 74.69 %), ascaridiosis (41.49 %), capillariosis (31.54 %), trihostrongilosis (16.59 %) were detected. Among the studied geese, pathogens of heterakosis (41.94 %), amidostomosis (27.42 %), capillariosis (25.81 %) and trihostrongilosis (16.67 %) were found. It is proved that nematodoses of the digestive tract mainly occur in the form of polyinvasions. In 67.22 % of patients with nematodoses of chickens, the simultaneous course of several parasitic pathogens was established, in geese this figure was 57.69 %. Monoinvasions were detected in 32.78 and 42.31 % of patients with nematodoses of chickens and geese, respectively. Out of the polyinvasions of chickens, two-component ones predominated, where heterakosis-capillariosic and ascaridiosis-heterakosic were most often diagnosed (51.24 and 33.06 % of patients with polyinvasions). Ascaridiosis-trihostrongilosis-capillariosic (9.92 %) and heterakosis-trihostrongilosis-capillariosic (5.78 %) invasions were less frequent. Among geese, heterakosis-capillariosic (40 % of patients with polyinvasions) and amidostomosis-capillariosic (28.89 %) invasions dominated among polyinvasions. A smaller percentage were heterakosis-amidostomosis-capillariosic (20 %) and amidostomosis-trihostrongilosis (11.11 %) invasions. Prospects for further research are to establish the effectiveness of modern anthelmintics in polyinvasions of geese and chickens.

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Morphological and Biological Characteristics of Amidostomum Anseris (Nematoda, Amidostomatidae) from Anser anser domesticus

Cited by 6 publications

References 11 publications

Differential species traits of Trichostrongylus tenuis (Nematoda, Trichostrongylidae)

Differential species traits of Trichostrongylus tenuis (Nematoda, Trichostrongylidae)

Viability of exogenous stages of development of the causative agent of trichu-riasis of dogs under the influence of temperature

Distribution of nematodoses of poultry in farms of Poltava region

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