scholarly journals Trematode-host interaction by an example of Cryptocotyle infection in fish of the Gobiidae family in estuary waters and the Black Sea in Southern Ukraine

2020 ◽  
Vol 8 (1) ◽  
pp. 3-8
Author(s):  
S. L. Honcharov
2019 ◽  
Vol 21 (96) ◽  
pp. 101-107
Author(s):  
S. L. Honcharov

The article gives the result of the research of such fishes of the Gobiidae bloodline as Neogobius fluviatialis Pallas, 1814, Neogobius melanostomum Pallas, 1814, and Mesogobius batrachocephalus Pallas, 1814, in the waters of the Dnipro-Buh estuary and the Black Sea near Mykolayiv and Odessa regions.  It established the possible associations of cryptocotylosis with other types of parasitic invasions of Gobiidae fishes. It has been set up that the researched fishes have been the most invaded by such agents of parasitic diseases as trematodes and nematodes – 52.2% and 37.3% respectively. The smallest parasitic group affecting commercial fishes is cestodiasis – 0.37%. Neogobius fluviatialis Pallas, 1814, has been noticed as invaded by Asymphylodora pontica Chernyshenko, 1949. The prevelence (P) counted 2.58%, and the invasion intensiveness (II) counted 4–12 samples. Cryptocotyle concavum Creplin, 1825 (P – 30.4%, ІІ – 9–124 samples); Cryptocotyle jejuna Nicoll, 19 07 (P – 15.9%, ІІ – 12–103 metacecaria); Ligula pavlovski Dubinina, 1959 (P – 0.21%, ІІ – 1sample); Cucullanellus minutus Rudolphi, 1819 (P – 9.05%, ІІ – 1–3 nematodes); Eustrongylides excisus, Jägerskiöld, 1909 (P – 23.06%, ІІ – 1 – 4 larvae); Raphidascaris sp. (P – 2.8%, ІІ – 1 nematode); Telosentis exiguus (Linstow, 1901) (P – 1.07%, ІІ – 1–2 samples.); Ergasilus nanus (Beneden, 1870) (ІE – 8.18%, ІІ – 1–31 maxillopods).The parasitic fauna of Neogobius melanostomum Pallas, 1814 was characterized by such agents as Asymphylodora pontica Chernyshenko,1949 (P – 10.2%, ІІ – 5–36 samples); Cryptocotyle concavum Creplin, 1825 (P – 59.2%, ІІ – 94–211 samples); Cryptocotyle jejuna Nicoll, 1907 (P – 44.8%, ІІ – 4–87 metacercaria); Stephanostomum bicoronatum (Stossich, 1883) Fuhrmann, 1928 (P – 26.5%, ІІ – 6 – 69 larvae); Ligula pavlovski Dubinina,1959 (P – 2.04%, ІІ – 1sample); Cucullanellus minutus Rudolphi, 1819 (P – 16.3%, ІІ – 1–6 nematodes); Eustrongylides excisus, Jägerskiöld, 1909 (P – 22.4%, ІІ – 1–4 larvae); Raphidascaris sp. (P – 4.08%, ІІ – 1–2 nematodes); Telosentis exiguus (Linstow, 1901) (P – 8.16%, ІІ – 1–2 samples); Ergasilus nanus Beneden, 1870 (P – 14.2%, ІІ – 2–8 maxillopods). Parasitic invasions of Mesogobius batrachocephalus Pallas, 1814, also took place. For example, there were registered the cases of invasion with such agents as Cryptocotyle concavum Creplin, 1825 (P – 17%, ІІ – 18–89 samples); Cryptocotyle jejuna Nicoll, 1907 (P – 13.5%, ІІ – 7–21 metacecaria); Stephanostomum bicoronatum (Stossich, 1883) Fuhrmann, 1928 (P – 6.77%, ІІ – 5–11 larvae); Cucullanellus minutus Rudolphi, 1819 (P – 35.6%, ІІ – 1–3 nematodes); Eustrongylides excisus, Jägerskiöld, 1909  (P – 32.2%, ІІ – 1–3 larvae); Сontracaecum sp. (P – 5.08%, ІІ – 1 nematode); Ergasilus nanus Beneden, 1870 (P – 8.74%, ІІ – 1–15 parasites).


2012 ◽  
Vol 18 (4-5) ◽  
pp. 339-381
Author(s):  
Renata Holod ◽  
Yuriy Rassamakin

Abstract A burial of a Turkic (Qıpčaq/Cuman/Polovtsian) prince excavated in the grasslands of southern Ukraine is witness to an exchange in objects and products throughout the Black Sea/Mediterranean littoral, the Middle East, and central and northwest Europe in the Middle Ages. The grave goods, arms and costumes, which are of unprecedented richness for a medieval Turkic burial, are datable to the first three decades of the thirteenth century. They were likely accumulated through trading and raiding or through diplomatic and marriage gifts of this Qıpčaq leader, and his tribal confederation, with the neighboring Rus’, Georgian, Armenian, Hungarian, Byzantine, Crusader and Islamic polities. Among the grave goods excavated in the tumulus/ kurgan are a variety of containers such as two complete and reused amphorae, glazed ceramic albarello and bottle and a gilded silver covered cup. The albarello and bottle could be associated with the Mediterranean pharmacological practice of shipping valuable substances in specialized containers. Other vessels, such as the covered ceremonial cup from northwest Europe, were reused likely in a complex ritual utilizing plants native to these grasslands. This paper will consider the circumstances under which these substances would have been deposited and discuss the origins and uses of the containers.


Author(s):  
VICTOR OSTAPCHUK ◽  
SVITLANA BILYAYEVA

The northern frontiers of the Ottoman Empire lay across a swathe of lands between Hungary and Iran, arcing through the principalities of Wallachia and Moldavia, then north of the Black Sea through the steppes of southern Ukraine, and finally proceeding further east along the Caucasus Mountains as far as the Caspian Sea. In a frontier region such as the one on the northern Black Sea, where environment, human geography and historical traditions made the steppe an alien place that did not readily yield to control and assimilation, the fortress was indispensable for maintaining the centre's presence. As imperial presence in such an area was anchored at and emanated from the fortress, the fortress can be seen as a prime target of a strategy aimed at learning about this frontier of the Ottoman world.


2017 ◽  
Vol 19 (78) ◽  
pp. 112-117
Author(s):  
S.L. Goncharov

The results of experimental infection of ducklings with metacerciae of the trematodes of the Heterophyidae family, obtained from the fish, are given in the article. Following species were studied: Mesogobius batrachocephalus Pallas, 1814, Neogobius melanostomum Pallas, 1814, Neogobius fluviatialis Pallas, 1814. Fish were caught in the waters of the Black Sea and the Dnipro-Bug estuary of Mykolayiv and Odesa regions. The pathological changes occurring in experimental birds as a result of a cryptocotyle infection are described. The pathomorphological features of acute catarrhal enteritis cause by trematodes Heterophyidae family were found. They included lesions of the small intestine mucosa, edema, hyperemia and the formation hemorrhages on the mucosal surface. Liver injury was observed as well. It was found that the percentage of survival of trematodes in the body of ducklings after 25 days of infection is 83%. It was found that in the area of the Mykolaiv and Odesa regions in the natural reservoirs two types of trematodes of the Heterophyidae family are circulating: Cryptocotyle concavum Crepli, 1825 and Cryptocotyle jejuna Nicoll, 1907. The latter species was previously not registered in this part of southern Ukraine.


2017 ◽  
Vol 51 (5) ◽  
pp. 393-400 ◽  
Author(s):  
S. L. Goncharov ◽  
N. M. Soroka ◽  
O. B. Pryima ◽  
A. I. Dubovyi

Abstract The article describes occurrence and distribution of Cryptocotyle trematodes in fish in the waters of the Dnipro-Buh estuary and the Black Sea in Mykolaiv and Odesa Region. Study was conducted in 2015-2016. Two trematode species were found in natural waters of these regions: Cryptocotyle cancavum Crepli, 1825 and Cryptocotyle jejuna Nicoll, 1907. Th e latter species has not been previously registered in this region in southern Ukraine. Varying intensity of infection with Cryptocotyle metacercariae was observed in fish of Gobiidae family: Mesogobius batrachocephalus Pallas, 1814, Neogobius melanostomum Pallas, 1814, N. fluviatialis Pallas, 1814. Th e most affected species was N. melanostomum, with the prevalence of infection 59.2 %. Less infected were N. fluviatialis and M. batrachocephalus, with the prevalence of infection 30.4 % and 17 % respectively. The intensity of infection was the highest in N. melanostomum - 211 metacercariae per fish, followed by N. fluviatialis and M. batrachocephalu - 124 and 89 metacercariae respectively. Cryptocotyle was the most prevalent in the Dnipro-Buh estuary (cape Adzhigol, Mykolaiv Region) and much less prevalent in the waters of the Black Sea in Mykolaiv and Odesa Regions. Mean prevalence of infection was 31.4 %.


2018 ◽  
Vol XIX (1) ◽  
pp. 578-582
Author(s):  
ZIDARU Marian

In the course of 2018, on the background of increasing tensions with USA on Ukraine and Siria, Russian President Vladimir Putin decide to liquidate the conflict in Ukraine by destroying Ukrainian army and invading southern part of this country. The aims of the operation, are: -Denial of Ukraine access to the Black Sea; -Getting Russia's access to Danube. -Providing Russia's access from the mainland to the Crimea; -Preventing the creation of NATO's bases in southern Ukraine. As a Secondary Direction: An attack against Dobrogea in order to distract NATO's main operation and prevent the alliance to intervene before reaching primary objective in Ukraine by Russian troops: conquering the south of Ukraine. We develop this scenario in order to show our defense weaknesses at the Black Sea area.


Algologia ◽  
2021 ◽  
Vol 31 (3) ◽  
pp. 279-295
Author(s):  
V.O. Kuznetsov ◽  
◽  
F.P. Tkachenko ◽  

Тhe modern period of development of algological researches at Odesa University is analyzed. It is noted that the creation of a scientific school under the leadership of prof. І.І. Pogrebnyak gave impetus to the renewed interest of the scientific community in the study of the algae of the Black Sea, its estuaries and some freshwater bodies of southern Ukraine. These studies covered benthic and planktonic groups of algae, as well as their individual systematic groups, including blue-green, diatomaceous, cryptophytic, dinophytic, green, red, and brown. Attention was paid to the possible practical use of algae in ecology, agriculture and medicine. I.I. Pogrebnyak's research was continued by his students, doctors of biological sciences Prof. Guslyakov M.O., Maslov I.I., Tkachenko F.P. and dozens of young scientists, already their students.


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