scholarly journals Abundance of Оpisthorchis felineus larvae in cyprinid species in the West Kazakhstan Region

2021 ◽  
Vol 15 (2) ◽  
pp. 29-35
Author(s):  
F. Kh. Nurzhanova ◽  
R. S. Karmaliyev ◽  
G. G. Absatirov ◽  
E. M. Sengaliyev
Keyword(s):  
Infection Rate ◽  
Fish Species ◽  
Liver Fluke ◽  
Cyprinid Fish ◽  
Compression Method ◽  
Intensity Of Infection ◽  
The West ◽  
Larval Stages ◽  
Dorsal Fin ◽  
West Kazakhstan

The purpose of the research is studying the abundance of Opisthorchis sp. in cyprinid fish.Materials and methods. Diagnostic studies of fish are aimed at identifying the larval stages of Opisthorchis sp. – metacercariae that are infective for carnivores and humans. We examined 183 specimens of fish that belong to 7 species. The fish were examined by the compression method under an MBS-9 microscope.Results and discussion. The epidemiologically and epizootologically significant fish species in the West Kazakhstan Region are the ide, rudd, roach, bream, tench and silver bream. The infection rate of cat liver fluke metacercariae in these fish species is an indicator of the contamination of the region. The highest prevalence and intensity of infection are recorded in the ide. When studying the age dynamics of fish infected by Opisthorchis sp. metacercariae, we found an increase in infection rate with age. This is the result of a gradual annual accumulation of the parasite in the host. The greatest localization of metacercariae in the fish was observed in the muscles near the dorsal fin where the proportion of accumulated larvae was more than 90%. 

scholarly journals METACERCARIAE OPISTHORCHIDS IN COMMERCIAL CARP FISH FROM THE LOWER AND MIDDLE OB

2019 ◽  
pp. 438-446 ◽  
Author(s):  
Osipov ◽  
Abramov
Keyword(s):  
Northern Taiga ◽  
Point Of View ◽  
Taiga Zone ◽  
Compression Method ◽  
Intensity Of Infection ◽  
The West ◽  
Leading Role ◽  
Irtysh Basin ◽  
Carp Fish

This article shows the infection of commercial cyprinids from the Middle and Lower Ob with muscle trematodes that are dangerous to humans, collected in 2016, 2017 and 2018. From the point of view of human health, the study of carp fish infected with opistorchids is important. It is in the Ob – Irtysh basin that the world's largest opisthorchiasis is located. In the study of carp fish for infection with muscle trematodes, a compression method was used. Comparing the infection of carp fishes of different species with metacercariae opistorchids from different landscape-geographical zones, one can speak of the leading role of ide in maintaining the Ob - Irtysh center of opisthorchiasis.The role of the bream in maintaining the West Siberian focus of opisthorchiasis is gradually increasing due to the ever-growing herd of this fish. O. felineus and M. biliside infestation is most severe in Middle Ob, in the central taiga zone. In another subzone - the northern taiga (v. Hills) and the forest-tundra zone (v. Aksarka), the extensiveness of the O. felineus infection is either equal to 100% or approaches it. The intensity of infection in the ide from Middle Ob found maximum values. In other, more northern subzones, the intensity of infection with O. felineus metacercaria was significantly inferior to the infection of the Middle Ob’s ide. Based on the above, we can talk about the greatest infection of carp fish in Middle Ob. The center of the opisthorchiasis is situated exactly here.

Laubuka parafasciata, a new cyprinid fish species (Teleostei: Cyprinidae) from Mizoram northeastern India

Zootaxa ◽  
2017 ◽  
Vol 4244 (2) ◽  
pp. 269 ◽  
Author(s):  
LALRAMLIANA LALRAMLIANA ◽  
DENIS VANLALHLIMPUIA ◽  
MAHENDER SINGH
Keyword(s):  
New Species ◽  
Fish Species ◽  
Lateral Line ◽  
Northeast India ◽  
Cyprinid Fish ◽  
Northeastern India ◽  
Dorsal Fin ◽  
Lower Jaw ◽  
Fin Rays ◽  
Pelvic Fin

Laubuka parafasciata, new species, is described from the Sala River of Mizoram, northeast India. The species differs markedly from all its congeners, with the exception of L. fasciata, in having a broad, dark-brown, midlateral stripe from the posterior rim of the orbit to the middle of the caudal-fin base. It is further distinguished from all other species in the genus by the combination of the following characters: premaxillae not in contact at symphysis, 16 precaudal vertebrae, minute tubercles scattered on the lower jaw, 28–33 lateral-line scales, 16–18 predorsal scales, 8½ branched dorsal-fin rays, 2½ scales between lateral line and pelvic-fin origin, and 16½–19½ branched anal-fin rays. 

Prevalence of Linguatula sp., a food-borne zoonotic aberrant arthropod, in river buffaloes slaughtered at Tabriz slaughterhouse, Iran

2020 ◽  
Author(s):  
Nasser Hajipour ◽  
Jennifer Ketzis ◽  
Parviz Hassanzadeh
Keyword(s):  
Infection Rate ◽  
Statistical Association ◽  
Intermediate Hosts ◽  
Mesenteric Lymph Nodes ◽  
Intensity Of Infection ◽  
Mesenteric Lymph ◽  
Food Borne ◽  
Different Seasons ◽  
Significant Statistical Association ◽  
Age And Sex

Abstract Background Canids and herbivores are the definitive and intermediate hosts of Linguatula sp., respectively. Methods Mesenteric lymph nodes (n=32 525) were randomly collected from 7585 buffaloes from July 2016 to July 2019 and examined macroscopically. Results Results showed that 388 (5.11%) buffaloes were infected. The intensity of infection was determined to be 3.07±0.07. Significant statistical association was identified between infection rate and age and sex. Although there were no significant differences in the infection rate over different seasons, the highest infection rate was observed in autumn. Conclusions These data highlight the importance of inspection at slaughter.

scholarly journals Hybridization behaviour between two common European cyprinid fish species – silver bream, Blicca bjoerkna and common bream, Abramis brama – in a controlled environment

2009 ◽  
Vol 59 (1) ◽  
pp. 97-108 ◽  
Author(s):  
Michaël Ovidio ◽  
Jean-Claude Philippart ◽  
Billy Nzau Matondo ◽  
Pascal Poncin
Keyword(s):  
Fish Species ◽  
Mating Success ◽  
Cyprinid Fish ◽  
Controlled Environment ◽  
Abramis Brama ◽  
Bream Abramis Brama ◽  
Common Bream ◽  
Common Bream Abramis Brama

AbstractThe egg release–mating comparison, heterospecific matings and mating success under two hybridization conditions – (i) mixing one sex per species and (ii) mixing both sexes from each species – were investigated to determine whether silver bream Blicca bjoerkna and common bream Abramis brama can hybridize in nature.The results revealed that non-matings in hybridization experiments of silver bream females × common bream males can be explained by territorial and aggressiveness activities observed in common bream. In common bream females × silver bream males, heterospecific matings were observed but their numbers were significantly lower than the spawning numbers, and in this experiment, a female mated with one to four heterospecific males. In mixing both sexes from both species, similar spawning – mating numbers were observed but heterospecific matings accounted for only 27% of the total matings, with 24% accounting for heterospecific matings between common bream females and silver bream males, directly or by opportunism. Mating success was characterized by the occurrence of fertilized eggs after matings.Natural hybridization occurred preferentially between common bream females and silver bream males.

Helminthofauna of the fox (Vulpes vulpes) and korsak (Vulpes corsac)

2021 ◽  
Vol 3 ◽  
pp. 28-35
Author(s):  
I.M. Abirova ◽  
N.Zh. Eleugaliyeva ◽  
G.K. Zhumagaliyeva ◽  
M.G. Gusmanov
Keyword(s):  
Vulpes Vulpes ◽  
Toxocara Canis ◽  
Host Population ◽  
Farm Animals ◽  
Wild Animals ◽  
The West ◽  
West Kazakhstan ◽  
The One ◽  
Epidemiological Significance

For humans and domestic animals, parasites of wild animals can pose a threat to health, and even life. In this regard, it is important to establish the pathways of circulation of pathogens of dangerous helminthiasis, to identify the nature of the focus and the role of wild animals in this process, since these data serve as the basis for the development of anti-parasite measures. The study of parasitic organisms of wild animals is of great importance for science and practice. In natural biocenosis, one of their joints is parasitic species, which, on the one hand, are involved in the regulation of the host population; on the other hand, they prevent the introduction and spread of new species related to the host, i.e. participate in ensuring homeostasis of biocenosis. Parasitizing in various hosts, both definitive and intermediate, helminthes can determine the number and distribution over the territory not only of these hosts, but also of other animal species associated with these hosts by trophic and other connections. The foregoing determines the relevance of the problem of studying the fauna of helminthes of wild animals in the West Kazakhstan region, which is currently under-researched. The species composition of helminthes of the fox (Vulpes vulpes) and the korsak (Vulpes corsac) in the territory of the West-Kazakhstan region region was explored. In most cases, the invasion was recorded in an associative form. Some helminthes cause serious diseases in humans and farm animals. As a result of our research, we identified 6 species of intestinal helminthes in the common fox, two of which (Alveococcus multilocularis, Toxocara canis) have epidemiological significance. In korsak, 3 types of helminthes were identified at the autopsy before the species.

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