Infestation of fish with the alien parasite Nicolla skrjabini (Iwanitzky, 1928) (Trematoda, Opecoelidae) in the Saratov Reservoir

2016 ◽  
Vol 7 (3) ◽  
pp. 268-274 ◽  
Author(s):  
O. V. Mineeva
Keyword(s):  
Saratov Reservoir ◽  
Alien Parasite ◽  
Nicolla Skrjabini

Materials on multicellular parasites fauna of the ruffe Gymnocephalus cernuus Linnaeus, 1758 (Pisces: Percidae) from the Saratov water basin

2016 ◽  
Vol 3 (1) ◽  
pp. 16-23 ◽  
Author(s):  
Минеева ◽  
O. Mineeva
Keyword(s):  
Natural Habitat ◽  
Parasite Fauna ◽  
Middle Part ◽  
Reservoir Host ◽  
The Body ◽  
Infection Rates ◽  
Saratov Reservoir ◽  
Gymnocephalus Cernuus ◽  
Larval Stages ◽  
Nicolla Skrjabini

Objective of research. Data on the species composition of the fauna of multicellular parasites and the infection rates of the pope ruffe Gymnocephalus cernuus Linnaeus, 1758 from Mordovian floodplain of the Saratov reservoir (the middle part) are pesented. Materials and methods. 53 ruffe individuals were investigated in spring and summer 2012 – 2015 by incomplete parasitological post-mortem examination (Bykhovskaya-Pavlovskaya, 1985). 19 species of multicellular parasites belonging to 7 classes: Monogenea - 1, Cestoda - 1, Trematoda - 11, Nematoda - 3, Acanthocephala - 1, Bivalvia - 1, Crustacea – 1 were registered. The largest group are flukes; more than half of species (8) are larval forms, which is the result of bottom living of the host. The significant diversity of larval stages of helminths (8 species of trematodes and 2 species of nematodes) shows the involvement of the ruffe as an intercalary, supplementary and/or reservoir host in the circulation of parasites in fish, birds and mammals. 7 species of parasites infest the ruffe on the food chain; 12 species – using the active infestation way. Results and discussion. The studied parasite fauna contains one species narrowly specific for the ruffe (monogenea D. amphibothrium (Wagener, 1857) and 2 species typical for percoid fishes (cestoda Proteocephalus percae (Müller, 1780) and trematoda Bunodera luciopercae (Müller, 1776). 2 alien species Nicolla skrjabini (Iwanitzky, 1928) (marita) and Apophallus muehlingi (Jägerskiöld, 1898) (mtc.) whose natural habitat is limited by the rivers of the Azov-Black Sea and Baltic Sea were registered in the fauna of multicellular parasites of the ruffe from the Saratov reservoir. The most common ruffe parasites are Diplostomum and Ichthyocotylurus metacercariae metacercaria infesting fish by penetrating through the body covers. These metacercariae as well as Apophallus muehlingi metacercariae are pathogenic to fish.

Trichinella spiralis a new alien parasite in Italy and the increased risk of infection for domestic and wild swine

2017 ◽  
Vol 246 ◽  
pp. 1-4 ◽  
Author(s):  
Chiara Garbarino ◽  
Maria Interisano ◽  
Alessandro Chiatante ◽  
Gianluca Marucci ◽  
Enrico Merli ◽  
...  
Keyword(s):  
Trichinella Spiralis ◽  
Risk Of Infection ◽  
Increased Risk ◽  
Alien Parasite

Parasites of the spiny loach Cobitis taenia Linnaeus, 1758 (Pisces: Cobitidae) from Saratov Reservoir

2016 ◽  
Vol 3 (4) ◽  
pp. 502-508 ◽  
Author(s):  
Минеева ◽  
O. Mineeva
Keyword(s):  
Species Composition ◽  
Standard Technique ◽  
Parasite Fauna ◽  
Middle Part ◽  
Saratov Reservoir ◽  
The Common ◽  
Cobitis Taenia ◽  
Species Specific ◽  
Intensity Of Invasion ◽  
Raphidascaris Acus

Objective of research. To study the species composition of the parasite fauna and the infestation rate of the spiny loach Cobitis taenia Linnaeus, 1758 from Saratov Reservoir. Materials and methods. The material was collected in the Mordovo-Kol’tsovsky area of the Reservoir (the middle part of the reservoir) in 2009 and 2014–2015. Fishing was carried out by a hydrobiological net. Totally 47 individuals of spiny loach were investigated by the method of full parasitological autopsy. Collection, fixation and office studies were carried out using the standard technique; diagnostics of species composition of parasites — by identification guides. To estimate the rate of fish invasion, we used the common parasitological indices: extensity of invasion, intensity of invasion and the index of abundance of parasites. Results and discussion. 7 species of parasites belonging to 5 classes: Monogenea — 1, Cestoda — 1, Trematoda — 3, Nematoda — 1, Bivalvia — 1 were found in the spiny loach Cobitis taenia Linnaeus from Saratov Reservoir. The species composition of parasites and the level of host infestation directly depend on the lifestyle and nutrition of fishes. Eating the infected benthic and weed bed invertebrates (oligochaetes, larvae and adult insects), the spiny loach becomes infected with 3 species of helminths. 4 species of parasites infect the host using the active infestation way. Most of the parasites found in fish from different families and groups are wide specific. The parasite fauna includes 1 species, narrow specific for the spiny loach (monogenea Gyrodactylus latus Bychowsky, 1933) and 1 species specific for loaches (fam. Cobitidae) — metacercariae of Holostephanus cobitis Opravilova, 1968. For 4 species of parasites, the spiny loach is the final (definitive) host, for 3 — intermediate. The dominant species in the composition of the parasite fauna C. taenia is the trematode H. cobitidis (mtc.); the extensity of infection with it reaches 97,9%, the abundance index is 10,8 ind. Fluke larvae infect fishes (using the active way) penetrating through the skin. The most pathogenic for spiny loach parasites are the monogenea G. latus, metacercariae of trematodes H. cobitidis and Paracoenogonimus ovatus Katsurada, 1914, the larva of the nematode Raphidascaris acus Bloch, 1779.

Alien parasite hitchhikes to Patagonia on invasive bumblebee

2012 ◽  
Vol 15 (3) ◽  
pp. 489-494 ◽  
Author(s):  
Marina P. Arbetman ◽  
Ivan Meeus ◽  
Carolina L. Morales ◽  
Marcelo A. Aizen ◽  
Guy Smagghe
Keyword(s):  
Alien Parasite

scholarly journals Gastrointestinal helminth fauna and helminth communities of bleak (Alburnus alburnus, L. 1758) from lower section of Danube River

2019 ◽  
Vol 22 (3) ◽  
pp. 344-352
Author(s):  
M. Chunchukova ◽  
D. Kirin ◽  
D. Kuzmanova
Keyword(s):  
Parasite Species ◽  
Danube River ◽  
Parasite Communities ◽  
Gastrointestinal Helminth ◽  
Helminth Communities ◽  
Acanthocephalus Lucii ◽  
Dominant Structure ◽  
Bleak Alburnus Alburnus ◽  
Standard Techniques ◽  
Nicolla Skrjabini

The present study presents the results from examinations of bleak’s endohelminth species and structure of helminth communities from the Bulgarian part of the Lower Danube River. In 2015 and 2016, on a seasonal manner, 91 specimens of Alburnus alburnus (Linnaeus, 1758) (bleak) were examined with standard techniques for parasites. Five species of parasites: Nicolla skrjabini (Ivanitzky, 1928), Ligula intestinalis (Linnaeus, 1758), Acanthocephalus lucii (Müller, 1776), Pomphorhynchus laevis (Müller, 1776) and Contracoecum microcephalum (Stossich, 1890), larvae were identified. The analysis of the dominant structure of the found parasite species is presented to the component and infracommunities levels. All parasite species were accidental for the parasitic communities of examined fish with the exception of P. laevis and N. skrjabini. P. laevis was a core parasite species and N. skrjabini was a component parasite species for the helminth communities of bleak. The parasite communities of A. alburnus were discussed and compared with previous research data on parasite communities of bleak from River Danube in Bulgaria. New data for helminths and helminth communities of A. alburnus from Danube River (biotope Vetren) and their seasonal occurrence are presented.

scholarly journals Spatial distribution of picoseston in the Saratov reservoir in summer

2021 ◽  
pp. 176-190
Author(s):  
E. S. Krasnova ◽  
M. V. Umanskaya
Keyword(s):  
Spatial Distribution ◽  
Food Webs ◽  
Significant Contribution ◽  
Heterotrophic Bacteria ◽  
Total Biomass ◽  
Total Abundance ◽  
Saratov Reservoir ◽  
Autotrophic Picoplankton ◽  
Upper Volga ◽  
Planktonic Food

The structure and spatial distribution of picoseston in the Saratov reservoir in July 2011 and August 2014 are described. On average, the total abundance of cells and particles forming picoseston was 1.87±0.73×106 cells (part.)/mL; and the total biomass of picoseston was 43.8±19.4 µg C/L. During the study period, solitary heterotrophic bacteria and phototrophic picocyanobacteria prevailed in the picoseston of the Saratov reservoir, amounting to 77–100% of its total abundance and biomass. The proportion of picodetrital particles was extremely small (on average, 4.1% of the total biomass of picoseston). The high heterogeneity of picoceston distribution (Cv is 130% and 110% for abundance and biomass, respectively) was found in the Saratov reservoir during the study period. On average, the abundance and biomass of heterotrophic bacterioplaknton and picodetritus at stations of the tributary estuaries were slightly higher than in the riverbed. At the same time, the abundance of picocyanobacteria was higher, and the biomass was lower at the estuarine stations compared to the riverbed ones. The total number of bacterioplankton and autotrophic picoplankton in the Saratov reservoir in 2011 and 2014 corresponded to the mesotrophic level of productivity. Picodetrital particles, in contrast to the Upper Volga and Kama reservoirs, make no significant contribution to the planktonic food webs of the Saratov reservoir, at least during the study period.

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